Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 PM EDT Sat Jun 26 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. A broad area of low pressure associated with a tropical wave located over the eastern tropical Atlantic Ocean several hundred miles southwest of the Cabo Verde Islands continues to produce disorganized shower and thunderstorm activity. Some slow development of this system is possible through the middle of next week while it moves a little faster toward the west and then west-northwest at about 20 mph. * Formation chance through 48 hours...low...20 percent. * Formation chance through 5 days...low...30 percent. 2. A surface trough located a few hundred miles southwest of Bermuda is producing a broad area of disorganized showers and thunderstorms. Surface pressures are currently high across the area, and significant development of this system is not anticipated while it moves westward and then west-northwestward at about 15 mph over the next few days, reaching the coast of the southeastern United States late Monday. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...10 percent.
Monthly Archives: June 2021
6/24 Tropical Update
Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Thu Jun 24 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. Disorganized shower and thunderstorm activity is decreasing this morning to the east of a small area of low pressure located more than 100 miles east-southeast of Barbados. Increasing upper-level winds are likely to prevent further development of this system during the next couple of days while it moves west-northwestward at about 10 mph. This disturbance could produce increased shower activity and some gusty winds while moving across the Lesser Antilles over the next couple of days. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...10 percent. 2. A strong tropical wave has emerged just off the coast of Africa this morning. Although ocean temperatures are still relatively cool over the tropical Atlantic Ocean and are only marginally conducive for development, a small tropical depression could form by early next week while this system moves westward to west-northwestward at about 15 mph across the tropical eastern and central Atlantic Ocean. * Formation chance through 48 hours...low...20 percent. * Formation chance through 5 days...medium...40 percent.
6/22 Tropical Update
Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Tue Jun 22 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. Showers and thunderstorms have increased in coverage associated with the tropical wave located more than 500 miles east of the Windward Islands. Some additional development of this disturbance is possible over the next couple of days before upper-level winds become less conducive for further organization by Thursday. The system is expected to move westward to west-northwestward at 15 to 20 mph. * Formation chance through 48 hours...low...30 percent. * Formation chance through 5 days...low...30 percent.
Tropical Storm Claudette Advisory #8
BULLETIN Tropical Storm Claudette Advisory Number 8 NWS National Hurricane Center Miami FL AL032021 1000 AM CDT Sat Jun 19 2021 ...HEAVY RAINS AND TROPICAL-STORM-FORCE WINDS CONTINUE ALONG PORTIONS OF THE NORTHERN GULF COAST... ...TROPICAL STORM WATCH HAS BEEN ISSUED FOR A PORTION OF THE NORTH CAROLINA COAST... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...31.0N 89.7W ABOUT 75 MI...120 KM NNE OF NEW ORLEANS LOUISIANA ABOUT 95 MI...155 KM WNW OF MOBILE ALABAMA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NNE OR 25 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: A Tropical Storm Watch has been issued for a portion of the North Carolina coast from Cape Fear to Duck, including Pamlico and Albemarle Sounds. The Tropical Storm Warning has been discontinued from the Mouth of the Mississippi River westward to Morgan City, Louisiana, and for Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Mouth of the Mississippi River to the Okaloosa/Walton County line Florida. A Tropical Storm Watch is in effect for... * Cape Fear to Duck, North Carolina * Pamlico and Albemarle Sounds A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere along the northern Gulf Coast and across the southeast U.S. should monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Tropical Storm Claudette was located near latitude 31.0 North, longitude 89.7 West. Claudette is moving toward the north-northeast near 14 mph (22 km/h). A turn toward the northeast is expected later today, followed by a motion toward the east-northeast tonight or Sunday. On the forecast track, the system should move farther inland across portions of southeast U.S. through Sunday night, and over the western Atlantic Ocean on Monday. Maximum sustained winds have decreased to near 40 mph (65 km/h) with higher gusts. Claudette is expected to weaken to a tropical depression later today, however, Claudette is forecast to become a tropical storm again when it moves across the Carolinas Sunday night or early Monday. Tropical-storm-force winds extend outward up to 205 miles (335 km) southeast of the center. The estimated minimum central pressure based on surface observations is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Claudette can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/graphics_at3.shtml?key_messages. RAINFALL: Claudette is expected to produce rainfall totals of 5 to 10 inches with isolated maximum amounts of 15 inches across portions of coastal Mississippi and Alabama, and the western Florida Panhandle through the afternoon. Considerable flash, urban and small stream flooding impacts as well as new and renewed minor to isolated moderate river flooding are likely across these areas. As the system continues to lift northeast through the weekend, heavy rain will occur across central Alabama, central and northern Georgia, and into the Piedmont of the Carolinas, resulting in rainfall totals of 3 to 6 inches with isolated maximum amounts of 8 inches. Flash, urban, small stream and isolated minor river flooding impacts are possible. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Mouth of the Pearl River to Okaloosa/Walton County Line, FL...2-3 ft Mobile Bay...2-3 ft Mouth of the Mississippi River to Mouth of the Pearl River...1-2 ft Lake Pontchartrain, Lake Maurepas, and Lake Borgne...1-2 ft Okaloosa/Walton County Line, FL to Panama City, FL...1-2 ft Pensacola Bay, Choctawhatchee Bay, Saint Andrew Bay...1-2 ft Cape Lookout, NC to NC/VA Border...1-3 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions should continue along the coast in the warning area for a few more hours. Tropical storm conditions are possible in the watch area Sunday night and Monday. TORNADOES: A few tornadoes are possible today and tonight across southeast Alabama, the western Florida Panhandle, and southwest Georgia. We
Potential Tropical Advisory. Number #6
TCPAT3 BULLETIN Potential Tropical Cyclone Three Advisory Number 6 NWS National Hurricane Center Miami FL AL032021 1000 PM CDT Fri Jun 18 2021 ...DISTURBANCE HAS NOT YET DEVELOPED INTO A TROPICAL CYCLONE... ...HEAVY RAINFALL AND TROPICAL-STORM-FORCE WINDS CONTINUING TO SPREAD ACROSS THE NORTHERN GULF COAST REGION... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...28.9N 90.9W ABOUT 60 MI...95 KM SSE OF MORGAN CITY LOUISIANA ABOUT 210 MI...335 KM SW OF MOBILE ALABAMA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...N OR 10 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * East of Morgan City, Louisiana to the Okaloosa/Walton County line Florida. * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 6-12 hours. Interests elsewhere along the northern Gulf Coast should monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 PM CDT (0300 UTC), the disturbance was centered near latitude 28.9 North, longitude 90.9 West. The system is moving toward the north near 13 mph (20 km/h). A turn toward the north-northeast is expected later tonight, with a turn toward the east-northeast expected by Saturday night or Sunday. On the forecast track, the system should moved inland over Louisiana during the next several hours, then move across portions of the Gulf coast and southeastern states through the weekend. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. There is still a high chance the system will become a tropical or subtropical storm through Saturday morning while the center is over or near water. The system is expected to begin weakening Saturday afternoon as it moves farther inland. * Formation chance through 48 hours...high...80 percent. * Formation chance through 5 days...high...80 percent. Tropical-storm-force winds extend outward up to 205 miles (335 km) mainly to the east of the center. Several oil rigs of off the coast of southeastern Louisiana have recently reported sustained winds of 40-45 mph (65-70 km/h). The estimated minimum central pressure is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Potential Tropical Cyclone Three can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/graphics_at3.shtml?key_messages. RAINFALL: The potential tropical cyclone is expected to produce rainfall totals of 5 to 10 inches with isolated maximum amounts of 15 inches across portions of the Central Gulf Coast. Considerable flash, urban and small stream flooding impacts as well as new and renewed minor to isolated moderate river flooding are likely. As the system continues to lift northeast through the weekend, heavy rain will expand across the interior Southeast and western Carolinas, resulting in rainfall totals of 3 to 6 inches with isolated maximum amounts of 8 inches. Flash, urban, small stream and isolated minor river flooding impacts are possible. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Morgan City, LA to Okaloosa/Walton County Line, FL...2-3 ft Lake Borgne and Mobile Bay...2-3 ft Lake Pontchartrain and Lake Maurepas...1-2 ft Okaloosa/Walton County Line, FL to Panama City, FL...1-2 ft Pensacola Bay, Choctawhatchee Bay, and Saint Andrew Bay...1-2 ft Cameron, LA to Morgan City, LA...1-2 ft Vermilion Bay...1-2 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions should continue along the coast in the warning area through Saturday. TORNADOES: A few tornadoes are possible through Saturday across southeast Louisiana, southern Mississippi, southern Alabama, and the western Florida Panhandle into southwest Georgia.
Potential Tropical Advisory. Advisory #5
WTNT33 KNHC 182032 TCPAT3 BULLETIN Potential Tropical Cyclone Three Advisory Number 5 NWS National Hurricane Center Miami FL AL032021 400 PM CDT Fri Jun 18 2021 ...HEAVY RAINFALL AND TROPICAL-STORM-FORCE WINDS SPREADING ACROSS PORTIONS OF THE NORTHERN GULF COAST... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...27.9N 91.2W ABOUT 125 MI...200 KM S OF MORGAN CITY LOUISIANA ABOUT 270 MI...430 KM SW OF MOBILE ALABAMA MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...N OR 5 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * East of Morgan City, Louisiana to the Okaloosa/Walton County line Florida. * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 6-12 hours. Interests elsewhere along the northern Gulf Coast should monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 400 PM CDT (2100 UTC), the disturbance was centered near latitude 27.9 North, longitude 91.2 West. The system is moving toward the north near 16 mph (26 km/h) and a north to north-northeast motion is expected during the next day or so. On the forecast track, the system will make landfall along the north-central Gulf Coast tonight or early Saturday. A northeastward or east-northeastward motion across the southeastern United States is forecast after landfall through the weekend. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Satellite images and surface observations indicate that the circulation is gradually becoming better defined, and the system still is likely to become a tropical or subtropical storm before landfall. Regardless of its status, little change in strength is expected through landfall. Weakening is forecast to begin after the system crosses the coast. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. Tropical-storm-force winds extend outward up to 205 miles (335 km) from the center. The estimated minimum central pressure based on surface observations and Air Force Hurricane Hunter data is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Potential Tropical Cyclone Three can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/graphics_at3.shtml?key_messages. RAINFALL: The potential tropical cyclone is expected to produce rainfall totals of 4 to 8 inches with isolated maximum amounts of 12 inches across portions of the Central Gulf Coast. Considerable flash, urban and small stream flooding impacts as well as new and renewed minor to isolated moderate river flooding are likely. As the system continues to lift northeast through the weekend, heavy rain will expand across southeastern Mississippi, southern and central Alabama, central to northern Georgia, far western North Carolina and western South Carolina, resulting in rainfall totals of 3 to 5 inches with isolated maximum amounts of 7 inches. Flash, urban, small stream and isolated minor river flooding impacts are possible. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Morgan City, LA to Okaloosa/Walton County Line, FL...2-3 ft Lake Borgne and Mobile Bay...2-3 ft Lake Pontchartrain and Lake Maurepas...1-2 ft Okaloosa/Walton County Line, FL to Panama City, FL...1-2 ft Pensacola Bay, Choctawhatchee Bay, and Saint Andrew Bay...1-2 ft Cameron, LA to Morgan City, LA...1-2 ft Vermilion Bay...1-2 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are beginning to reach the coast within the warning area, and these winds will continue into Saturday. TORNADOES: There is a threat for a tornado or two tonight across coastal Louisiana. A few tornadoes are possible on Saturday across southern portions of Louisiana, Mississippi, Alabama, and the western Florida Panhandle.
Potential Tropical Cyclone Advisory #4
BULLETIN Potential Tropical Cyclone Three Advisory Number 4 NWS National Hurricane Center Miami FL AL032021 1000 AM CDT Fri Jun 18 2021 ...HEAVY RAINFALL AND GUSTY WINDS BEGINNING TO REACH PORTIONS OF THE NORTHERN GULF COAST... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...26.5N 91.1W ABOUT 220 MI...355 KM S OF MORGAN CITY LOUISIANA ABOUT 340 MI...550 KM SSW OF MOBILE ALABAMA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NNE OR 15 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning has been discontinued from Morgan City westward to Intracoastal City, Louisiana. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * East of Morgan City, Louisiana to the Okaloosa/Walton County line Florida. * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 12 hours. Interests elsewhere along the northern Gulf Coast should monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the disturbance was centered near latitude 26.5 North, longitude 91.1 West. The system is moving toward the north-northeast near 14 mph (22 km/h) and this general motion is expected for the next day or so. On the forecast track, the system will make landfall along the north-central Gulf Coast tonight or early Saturday. A slow northeastward motion across the southeastern United States is likely after landfall through the weekend. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some strengthening is forecast, and a subtropical or tropical storm is likely to form over the central or northern Gulf of Mexico later today. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. The estimated minimum central pressure based on data from the Air Force Hurricane Hunters and surface observations is 1007 mb (29.74 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Potential Tropical Cyclone Three can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/graphics_at3.shtml?key_messages. RAINFALL: Rainfall totals of 4 to 8 inches with isolated maximum amounts of 12 inches are expected across portions of the Central Gulf Coast beginning today. Considerable flash, urban and small stream flooding impacts as well as new and renewed minor to isolated moderate river flooding are likely. As the system continues to lift northeast through the weekend, anticipate heavy rain to expand across southeastern Mississippi, southern and central Alabama, and central Georgia resulting in rainfall totals of 3 to 5 inches with isolated maximum amounts of 7 inches. Flash, urban, small stream and isolated minor river flooding impacts are possible. The potential tropical cyclone is expected to produce total rainfall of 3 to 6 inches with isolated amounts of 8 inches across the Yucatan Peninsula of Mexico. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Morgan City, LA to Okaloosa/Walton County Line, FL...2-3 ft Lake Borgne and Mobile Bay...2-3 ft Lake Pontchartrain and Lake Maurepas...1-2 ft Okaloosa/Walton County Line, FL to Panama City, FL...1-2 ft Pensacola Bay, Choctawhatchee Bay, and Saint Andrew Bay...1-2 ft Cameron, LA to Morgan City, LA...1-2 ft Vermilion Bay...1-2 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to first reach the coast within the warning area later today, making outside preparations difficult or dangerous. TORNADOES: The threat for a tornado or two will begin this afternoon across coastal Louisiana, then spread overnight into Saturday across southern portions of Louisiana, Mississippi, and Alabama, to the western Florida Panhandle.
Potential Tropical Advisory. Number 3A
BULLETIN Potential Tropical Cyclone Three Intermediate Advisory Number 3A NWS National Hurricane Center Miami FL AL032021 700 AM CDT Fri Jun 18 2021 ...HEAVY RAINFALL AND GUSTY WINDS EXPECTED TO REACH PORTIONS OF THE NORTHERN GULF COAST LATER TODAY... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...26.0N 91.5W ABOUT 255 MI...410 KM S OF MORGAN CITY LOUISIANA ABOUT 385 MI...620 KM SSW OF MOBILE ALABAMA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Intracoastal City Louisiana to the Okaloosa/Walton County line. * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 12 to 24 hours. Interests elsewhere along the northern Gulf Coast should monitor the progress of this system. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 700 AM CDT (1200 UTC), the broad area of low pressure was centered near latitude 26.0 North, longitude 91.5 West. The system is moving toward the north near 14 mph (22 km/h), and this general motion is expected for the next day or so. On the forecast track, the system will approach the north-central Gulf Coast tonight or early Saturday. A slow northeastward motion across the southeastern United States is likely after landfall through the weekend. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Some strengthening is forecast, and a subtropical or tropical storm is likely to form over the central or northern Gulf of Mexico later today. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. The estimated minimum central pressure is 1007 mb (29.74 inches), based on surface observations. HAZARDS AFFECTING LAND ---------------------- Key messages for Potential Tropical Cyclone Three can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/graphics_at3.shtml?key_messages. RAINFALL: Rainfall totals of 4 to 8 inches with isolated maximum amounts of 12 inches are expected across portions of the Central Gulf Coast beginning today. Considerable flash, urban and small stream flooding impacts as well as new and renewed minor to isolated moderate river flooding are likely. As the system continues to lift northeast through the weekend, anticipate heavy rain to expand across southeastern Mississippi, southern and central Alabama, and central Georgia resulting in rainfall totals of 3 to 5 inches with isolated maximum amounts of 7 inches. Flash, urban, small stream and isolated minor river flooding impacts are possible. The potential tropical cyclone is expected to produce total rainfall of 3 to 6 inches with isolated amounts of 8 inches across the Yucatan Peninsula of Mexico. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Intracoastal City, LA to Okaloosa/Walton County Line, FL...2-3 ft Vermilion Bay, Lake Borgne and Mobile Bay ...2-3 ft Lake Pontchartrain and Lake Maurepas...1-2 ft Okaloosa/Walton County Line, FL to Panama City, FL... 1-2 ft Cameron, LA to Intracoastal City, LA...1-2 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to first reach the coast within the warning area later today, making outside preparations difficult or dangerous. TORNADOES: The threat for a tornado or two will begin this afternoon across coastal Louisiana, then spread overnight into Saturday across southern portions of Louisiana, Mississippi, and Alabama, to the western Florida Panhandle.
Potential Tropical Cyclone. Advisory # 1
BULLETIN Potential Tropical Cyclone Three Advisory Number 1 NWS National Hurricane Center Miami FL AL032021 400 PM CDT Thu Jun 17 2021 ...POTENTIAL TROPICAL CYCLONE OVER THE SOUTHWESTERN GULF OF MEXICO... ...EXPECTED TO BRING HEAVY RAINFALL AND FLOODING TO THE NORTHERN GULF COAST... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...22.9N 92.4W ABOUT 475 MI...765 KM S OF MORGAN CITY LOUISIANA MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: A Tropical Storm Warning has been issued for the Gulf Coast from Intracoastal City, Louisiana, to the Alabama/Florida border, including Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Intracoastal City Louisiana to the Alabama/Florida border * Lake Pontchartrain, Lake Maurepas, and Metropolitan New Orleans A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. Interests elsewhere along the northern Gulf Coast should monitor the progress of this system. DISCUSSION AND OUTLOOK ---------------------- At 400 PM CDT (2100 UTC), the disturbance was centered near latitude 22.9 North, longitude 92.4 West. The system is moving toward the north near 9 mph (15 km/h) and this motion with some increase in forward speed is expected for the next day or so. On the forecast track, the system will approach the north-central Gulf Coast late Friday or early Saturday. A northeastward motion across the southeastern United States is likely after landfall. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Some strengthening is forecast tonight and Friday. A subtropical or tropical depression or storm is likely to form over the west-central Gulf of Mexico tonight or early Friday. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Potential Tropical Cyclone Three can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. RAINFALL: The potential tropical cyclone is expected to produce total rainfall of 3 to 6 inches with isolated amounts of 8 inches across the Yucatan Peninsula of Mexico. Rainfall totals of 4 to 8 inches with isolated maximum amounts of 12 inches are possible beginning Friday and continuing through the weekend from the Central Gulf coast northeastward into the Southern Appalachians. This will likely produce areas of flash, urban, and small stream flooding as well as minor to isolated moderate river flooding with new and renewed rises on already elevated rivers. STORM SURGE: The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Intracoastal City, LA to MS/AL Border...2-3 ft Vermilion Bay and Lake Borgne...2-3 ft Lake Pontchartrain and Lake Maurepas...1-2 ft MS/AL border to AL/FL border including Mobile Bay...1-3 ft Cameron, LA to Intracoastal City, LA...1-2 ft Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. WIND: Tropical storm conditions are expected to first reach the coast within the warning area on Friday, making outside preparations difficult or dangerous. TORNADOES: The threat for a couple tornadoes should begin Friday afternoon across coastal Louisiana. This threat should expand northward across southern portions of Louisiana and Mississippi, and southwest Alabama on Saturday.
6/17 Tropical Outlook
Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Thu Jun 17 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. A broad area of low pressure over the southwestern Gulf of Mexico is producing widespread but disorganized cloudiness, showers, and thunderstorms. This system is expected to move northward, and a tropical or subtropical depression is likely to form over the west-central Gulf of Mexico tonight or early Friday. An Air Force Reserve Unit reconnaissance aircraft is scheduled to investigate the disturbance this afternoon, if necessary. Regardless of development, heavy rainfall will continue over portions of Central America and southern Mexico during the next few days. Heavy rains should also begin to affect portions of the northern Gulf Coast on Friday. Please consult products from your local meteorological service for more information. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent.