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Tropical Storm Elsa Public Advisory Number 19A
2021-07-05 07:33:56| National Hurricane Center (Atlantic)
Issued at 200 AM EDT Mon Jul 05 2021 932 WTNT35 KNHC 050533 TCPAT5 BULLETIN Tropical Storm Elsa Intermediate Advisory Number 19A NWS National Hurricane Center Miami FL AL052021 200 AM EDT Mon Jul 05 2021 ...ELSA JUST SOUTH OF CENTRAL CUBA... ...CONDITIONS EXPECTED TO DETERIORATE OVER CENTRAL AND WESTERN CUBA LATER THIS MORNING... SUMMARY OF 200 AM EDT...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...20.8N 79.6W ABOUT 135 MI...215 KM ESE OF CAYO LARGO CUBA ABOUT 245 MI...395 KM SE OF HAVANA CUBA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * The Cuban provinces of Cienfuegos and Matanzas. A Hurricane Watch is in effect for... * The Cuban province of Camaguey A Tropical Storm Warning is in effect for... * The Cuban provinces of Camaguey, Ciego de Avila, Sancti Spiritus, Villa Clara, Mayabeque, and Havana * The Florida Keys from Craig Key westward to the Dry Tortugas A Storm Surge Watch is in effect for... * West coast of Florida from Bonita Beach to the Suwannee River A Tropical Storm Watch is in effect for... * Cayman Brac and Little Cayman * The Cuban province of Artemisa * The Florida Keys from east of Craig Key to Ocean Reef * Florida Bay * West coast of Florida from Flamingo northward to the Anclote River A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, in this case within the next 12 hours. The hurricane conditions are expected to begin shortly after the first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in the Florida peninsula, coastal Georgia and the Carolinas should monitor the progress of Elsa. Additional watches and warnings will likely be required later today. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM EDT (0600 UTC), the center of Tropical Storm Elsa was located near latitude 20.8 North, longitude 79.6 West. Elsa is moving toward the northwest near 15 mph (24 km/h), and this general motion is expected to continue today, followed by a turn toward the north-northwest on Tuesday. On the forecast track, Elsa is expected to move across central and western Cuba later today and head toward the Florida Straits tonight, and pass near the Florida Keys early Tuesday. Elsa is then forecast to move near or over portions of the west coast of Florida on Tuesday and Wednesday. Maximum sustained winds remain near 65 mph (100 km/h) with higher gusts. Some strengthening is possible before Elsa moves over Cuba later today, followed by some weakening while the center moves over land. Slight restrengthening is possible after Elsa moves over the southeastern Gulf of Mexico. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Elsa can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC and on the web at www.hurricanes.gov/graphics_at5.shtml?key_messages. WIND: Hurricane and tropical storm conditions are expected in portions of central Cuba today. Tropical storm conditions are expected to begin in the warning area in the Florida Keys by tonight. Tropical storm conditions are possible in the watch areas in the Cayman Islands this morning, and in the upper Florida Keys by tonight. Tropical storm conditions are possible in the watch area along the west coast of Florida beginning early Tuesday. STORM SURGE: A storm surge will raise water levels above normal tide levels by as much as the following amounts in areas of onshore flow within the hurricane watch and warning areas... Southern coast of Cuba...3 to 5 ft The combination of a 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... Bonita Beach, FL to Suwannee River including Tampa Bay...2 to 4 ft Flamingo, FL to Bonita Beach, FL...1 to 3 ft Ocean Reef, FL to Dry Tortugas including Florida Bay...1 to 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. RAINFALL: Across portions of Jamaica, an additional 2 to 4 inches of rainfall with isolated storm total amounts of 15 inches are expected through this morning. This rain may lead to scattered flash flooding and mudslides, some of which could be significant. Across portions of Cuba today, rainfall of 5 to 10 inches with isolated maximum amounts of 15 inches is expected. This will result in significant flash flooding and mudslides. Across the Cayman Islands today, rainfall of 3 to 5 inches is expected. This rain may lead to scattered flash flooding. Rainfall from Elsa will impact portions of the Florida Keys, Florida Peninsula and the coastal Southeast this week. Amounts of 2 to 4 inches with localized maximum amounts up to 6 inches will be possible across Florida and Coastal Georgia today through Wednesday, which may result in isolated flash, urban, and minor river flooding. Coastal portions of South Carolina are expected to receive 1 to 3 inches of rain, with local amounts to 5 inches Wednesday into Thursday, which could lead to isolated flash flooding. TORNADOES: A couple of tornadoes are possible across southern Florida this afternoon into Tuesday. SURF: Swells generated by Elsa will spread westward along the southern coast of Cuba today. Swells will increase near the Florida Keys and south Florida later today and spread northward along the west coast of Florida tonight and Tuesday. Please consult products from your local weather office for more details. NEXT ADVISORY ------------- Next complete advisory at 500 AM EDT. $$ Forecaster Cangialosi/Reinhart
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Tropical Storm Elsa Forecast Discussion Number 19
2021-07-05 04:58:57| National Hurricane Center (Atlantic)
Issued at 1100 PM EDT Sun Jul 04 2021 000 WTNT45 KNHC 050258 TCDAT5 Tropical Storm Elsa Discussion Number 19 NWS National Hurricane Center Miami FL AL052021 1100 PM EDT Sun Jul 04 2021 Similar to this time last night, Elsa has undergone another convective bursting pattern, except that tonight this has translated into at least some slight strengthening. An Air Force Reserve reconnaissance aircraft investigating the cyclone this evening has found maximum 850-mb flight-level winds of 55 kt and reliable SFMR surface winds of about 55 kt. Although there have been SFMR winds of 60 kt or more reported northeast and north of the center, those values appear to be contaminated by shoaling and/or breaking waves owing to the shallow water flowing in and around the offshore Cayo Anclitas and Cayo Pingues archipelagos. The estimated center pressure of 1004 mb based on dropsonde data also does a higher intensity of 60 kt. Therefore, based on the most reliable data, the intensity has been increased to 55 kt. The initial motion estimate is 310/13 kt. There remains no significant change to the previous few track forecasts and synoptic reasonings. Elsa is expected to move northwestward and then northward around the western periphery of a mid-level subtropical ridge during the next 3 days, followed by acceleration toward the northeast on days 4 and 5 as the cyclone moves near the southeast U.S. coast and then over the northwestern Atlantic. The new NHC track forecast is basically just an update and extension of the previous advisory track, and lies close to a blend of the tightly packed corrected consensus model HCCA and the simple consensus models TVCA and GFEX. Cuban radar data from Pilan and Camaguey have occasionally revealed an eye-like feature in the low -and mid-levels of the cyclone where cloud top temperatures have been colder than -80C and also where significant lightning activity has been occurring. Given that the circulation centers have become better aligned and the upper-level outflow pattern is well-established and steadily improving, some additional strengthening during the next 12 h is forecast, which calls for Elsa to be near hurricane strength before landfall occurs along the south-central coast of Cuba tomorrow. Over the eastern Gulf of Mexico late Monday and Tuesday, some restrengthening is forecast after Elsa clears Cuba, but southwesterly vertical wind shear is expected to hinder the intensification process. The official intensity forecast remains on the high side of the numerical model guidance, and follows a blend of the HCCA intensity consensus model, and the LGEM and and Decay-SHIPS statistical-dynamical models. Key Messages: 1. Widespread heavy rain will continue to affect portions of Jamaica tonight where isolated to scattered flash flooding and mudslides will be possible. Heavy rain will then impact the Cayman Islands and Cuba tonight into Monday resulting in significant flooding and mudslides over Cuba. As Elsa approaches the Florida Keys, Florida Peninsula, and coastal Georgia Monday through Wednesday, heavy rainfall may result in isolated flash, urban, and minor river flooding. Mid to late week, heavy rains across coastal South Carolina may result in isolated flash flooding. 2. Tropical storm conditions and a dangerous storm surge are expected with hurricane conditions possible in portions of eastern Cuba tonight. Tropical storm conditions are expected in portions of central and western Cuba tonight and Monday, and will spread into portions of the Florida Keys by late Monday. 3. Tropical Storm and Surge Surge Watches are in effect for portions of the west coast of the Florida peninsula where tropical storm conditions and a dangerous storm surge are possible beginning as early as Monday night and continuing into Tuesday. 4. There is a risk of tropical storm conditions, storm surge, and rainfall impacts along the remainder of the Florida Peninsula Tuesday night through Wednesday and the coasts of Georgia and the Carolinas Wednesday and Thursday. FORECAST POSITIONS AND MAX WINDS INIT 05/0300Z 20.6N 79.2W 55 KT 65 MPH 12H 05/1200Z 21.9N 80.7W 60 KT 70 MPH 24H 06/0000Z 23.5N 82.1W 50 KT 60 MPH 36H 06/1200Z 25.1N 82.9W 50 KT 60 MPH 48H 07/0000Z 27.1N 83.2W 50 KT 60 MPH 60H 07/1200Z 29.2N 82.8W 45 KT 50 MPH...INLAND 72H 08/0000Z 31.5N 81.6W 35 KT 40 MPH...INLAND 96H 09/0000Z 36.0N 76.0W 35 KT 40 MPH...INLAND 120H 10/0000Z 41.0N 66.8W 40 KT 45 MPH...OVER WATER $$ Forecaster Stewart
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Tropical Storm Elsa Forecast Advisory Number 19
2021-07-05 04:55:55| National Hurricane Center (Atlantic)
Issued at 0300 UTC MON JUL 05 2021 000 WTNT25 KNHC 050255 TCMAT5 TROPICAL STORM ELSA FORECAST/ADVISORY NUMBER 19 NWS NATIONAL HURRICANE CENTER MIAMI FL AL052021 0300 UTC MON JUL 05 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF CUBA HAS ISSUED A HURRICANE WARNING FOR THE CUBAN PROVINCES OF CIENFUEGOS AND MATANZAS. THE GOVERNMENT OF CUBA HAS DISCONTINUED THE HURRICANE WATCH FOR THE CUBAN PROVINCES OF GRANMA AND LAS TUNAS AND THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED FOR THE PROVINCES OF LAS TUNAS, GRANMA, HOLGUIN, SANTIAGO DE CUBA, AND GUANTANAMO. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * THE CUBAN PROVINCES OF CIENFUEGOS AND MATANZAS . A HURRICANE WATCH IS IN EFFECT FOR... * THE CUBAN PROVINCE OF CAMAGUEY A TROPICAL STORM WARNING IS IN EFFECT FOR... * THE CUBAN PROVINCES OF CAMAGUEY...CIEGO DE AVILA...SANCTI SPIRITUS...VILLA CLARA...MAYABEQUE...AND HAVANA * THE FLORIDA KEYS FROM CRAIG KEY WESTWARD TO THE DRY TORTUGAS A STORM SURGE WATCH IS IN EFFECT FOR... * WEST COAST OF FLORIDA FROM BONITA BEACH TO THE SUWANNEE RIVER A TROPICAL STORM WATCH IS IN EFFECT FOR... * CAYMAN BRAC AND LITTLE CAYMAN * THE CUBAN PROVINCE OF ARTEMISA * THE FLORIDA KEYS FROM EAST OF CRAIG KEY TO OCEAN REEF * FLORIDA BAY * WEST COAST OF FLORIDA FROM FLAMINGO NORTHWARD TO THE ANCLOTE RIVER A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 12 HOURS. THE HURRICANE CONDITIONS ARE EXPECTED TO OCCUR SHORTLY AFTER THE FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS... CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE- THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE...IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS. FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT HURRICANES.GOV. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. INTERESTS ELSEWHERE IN THE FLORIDA PENINSULA SHOULD MONITOR THE PROGRESS OF ELSA. ADDITIONAL WATCHES AND WARNINGS WILL LIKELY BE REQUIRED TONIGHT OR EARLY MONDAY. TROPICAL STORM CENTER LOCATED NEAR 20.6N 79.2W AT 05/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 310 DEGREES AT 13 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 20NE 20SE 0SW 20NW. 34 KT....... 70NE 50SE 20SW 70NW. 12 FT SEAS.. 60NE 60SE 30SW 60NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 20.6N 79.2W AT 05/0300Z AT 05/0000Z CENTER WAS LOCATED NEAR 20.2N 78.7W FORECAST VALID 05/1200Z 21.9N 80.7W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 30SE 0SW 30NW. 34 KT... 70NE 60SE 40SW 70NW. FORECAST VALID 06/0000Z 23.5N 82.1W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 40NE 30SE 0SW 30NW. 34 KT... 80NE 60SE 40SW 70NW. FORECAST VALID 06/1200Z 25.1N 82.9W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 40NE 40SE 0SW 30NW. 34 KT... 80NE 70SE 30SW 60NW. FORECAST VALID 07/0000Z 27.1N 83.2W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 40NE 40SE 0SW 30NW. 34 KT... 80NE 80SE 30SW 60NW. FORECAST VALID 07/1200Z 29.2N 82.8W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 60NE 70SE 30SW 50NW. FORECAST VALID 08/0000Z 31.5N 81.6W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 70SE 0SW 0NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 09/0000Z 36.0N 76.0W...INLAND MAX WIND 35 KT...GUSTS 45 KT. OUTLOOK VALID 10/0000Z 41.0N 66.8W...OVER WATER MAX WIND 40 KT...GUSTS 50 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.6N 79.2W INTERMEDIATE PUBLIC ADVISORY...WTNT35 KNHC/MIATCPAT5...AT 05/0600Z NEXT ADVISORY AT 05/0900Z $$ FORECASTER STEWART
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Tropical Storm Elsa Public Advisory Number 18A
2021-07-05 01:59:23| National Hurricane Center (Atlantic)
Issued at 800 PM EDT Sun Jul 04 2021 000 WTNT35 KNHC 042359 TCPAT5 BULLETIN Tropical Storm Elsa Intermediate Advisory Number 18A NWS National Hurricane Center Miami FL AL052021 800 PM EDT Sun Jul 04 2021 ...ELSA MOVING AWAY FROM SOUTHEASTERN CUBA AND JAMAICA... ...EXPECTED TO MOVE ACROSS CENTRAL CUBA ON MONDAY... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...20.2N 78.7W ABOUT 65 MI...105 KM W OF CABO CRUZ CUBA ABOUT 100 MI...160 KM S OF CAMAGUEY CUBA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Government of Cuba has discontinued the Hurricane Watch for the Cuban provinces of Guantanamo, Holguin, and Santiago de Cuba. The Government of Jamaica has discontinued the Tropical Storm Warning for Jamaica. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * The Cuban provinces of Camaguey, Granma, and Las Tunas. A Tropical Storm Warning is in effect for... * The Cuban provinces of Camaguey, Granma, Guantanamo, Holguin, Las Tunas, Santiago de Cuba, Ciego de Avila, Sancti Spiritus, Villa Clara, Cienfuegos, Matanzas, Mayabeque, and Havana * The Florida Keys from Craig Key westward to the Dry Tortugas A Storm Surge Watch is in effect for... * West coast of Florida from Bonita Beach to the Suwannee River A Tropical Storm Watch is in effect for... * Cayman Brac and Little Cayman * The Cuban province of Artemisa * The Florida Keys from east of Craig Key to Ocean Reef * Florida Bay * West coast of Florida from Flamingo northward to the Anclote River A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in the Florida peninsula should monitor the progress of Elsa. Additional watches and warnings will likely be required tonight or early Monday. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 PM EDT (0000 UTC), the center of Tropical Storm Elsa was located by an Air Force Reserve reconnaissance aircraft and radars from Pilan and Camaguey, Cuba, near latitude 20.2 North, longitude 78.7 West. Elsa is moving toward the northwest near 15 mph (24 km/h), and this general motion is expected to continue through Monday, followed by a turn toward the north-northwest on Tuesday. On the forecast track, the center of Elsa will approach south-central Cuba late tonight and early Monday. Elsa is expected to move across central and western Cuba and head toward the Florida Straits on Monday, and pass near the Florida Keys early Tuesday. Elsa is then forecast to move near or over portions of the west coast of Florida on Tuesday and Wednesday. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Some strengthening is expected before Elsa moves over Cuba, followed by some weakening while the center moves over land. Slight restrengthening is possible after Elsa moves over the southeastern Gulf of Mexico. Tropical-storm-force winds extend outward up to 90 miles (150 km) from the center. The estimated minimum central pressure based on reports from the reconnaissance aircraft is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Elsa can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC and on the web at www.hurricanes.gov/graphics_at5.shtml?key_messages. WIND: Tropical storm conditions are expected and hurricane conditions are possible in portions of eastern and central Cuba tonight. Tropical storm conditions are expected to begin in the warning area in the Florida Keys late Monday. Tropical storm conditions are possible in the watch areas in the Cayman Islands tonight, and in the upper Florida Keys by Monday night. Tropical Storm conditions are possible in the watch area along the west coast of Florida beginning Monday night. STORM SURGE: A storm surge will raise water levels above normal tide levels by as much as the following amounts in areas of onshore flow within the hurricane watch and warning areas... Southern coast of Cuba...3 to 5 feet The combination of a 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... Bonita Beach, FL to Suwannee River including Tampa Bay...2 to 4 ft Flamingo, FL to Bonita Beach, FL...1 to 3 ft Ocean Reef, FL to Dry Tortugas including Florida Bay...1 to 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. RAINFALL: Across portions of Jamaica, storm total rainfall of 4 to 8 inches with isolated total amounts of 15 inches are expected through today. This rain may lead to scattered flash flooding and mudslides, some of which could be significant. Across portions of Cuba through Monday, rainfall of 5 to 10 inches with isolated maximum amounts of 15 inches are expected. This will result in significant flash flooding and mudslides. Across the Cayman Islands through Monday, rainfall of 3 to 5 inches is expected. This rain may lead to scattered flash flooding. Rainfall from Elsa will impact portions of the Florida Keys, Florida Peninsula and coastal Georgia Monday through Wednesday. Amounts of 2 to 4 inches with localized maximum amounts up to 6 inches will be possible, which may result in isolated flash, urban, and minor river flooding. TORNADOES: A couple of tornadoes are possible across southern Florida Monday afternoon and Monday night into Tuesday. SURF: Swells generated by Elsa will spread westward along the coast of Jamaica and the southern coast of Cuba during the next day or two. Swells will increase near the Florida Keys and south Florida on Monday and spread northward along the west coast of Florida Monday night and Tuesday. Please consult products from your local weather office for more details. NEXT ADVISORY ------------- Next complete advisory at 1100 PM EDT. $$ Forecaster Stewart
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Tropical Storm Elsa Forecast Discussion Number 18
2021-07-04 22:43:48| National Hurricane Center (Atlantic)
Issued at 500 PM EDT Sun Jul 04 2021 000 WTNT45 KNHC 042043 TCDAT5 Tropical Storm Elsa Discussion Number 18 NWS National Hurricane Center Miami FL AL052021 500 PM EDT Sun Jul 04 2021 Elsa continues to exhibit some well-defined convective banding features over the northern and eastern portions of the circulation. Dvorak current intensity estimates from TAFB and SAB are 45 and 55 kt respectively,so the advisory intensity remains at 50 kt. Although the cirrus-level outflow over the area looks fairly impressive, the SHIPS output diagnoses about 20 kt of vertical shear over the cyclone, which may be inhibiting strengthening. Another negative factor could be blockage of the low-level inflow by the land masses surrounding the cyclone. The storm has turned toward the northwest, and the initial motion estimate is now 310/12 kt. There is little change to the track forecast reasoning from the previous advisory package. Elsa should move around the western periphery of a mid-level subtropical high pressure area during the next 3 days or so. Thereafter, the system should accelerate northward to northeastward over the eastern United States and the northwest Atlantic. No significant changes have been made to the NHC track forecast, which remains close to the simple and correct model consensus solutions. Some strengthening could occur as the storm approaches the south coast of Cuba and although not explicitly shown in the official forecast, Elsa could strengthen to near 60 kt before landfall in that country. Over the eastern Gulf of Mexico, southwesterly shear is expected to limit strengthening. The official intensity forecast remains on the high side of the numerical model guidance. Key Messages: 1. Widespread heavy rain will continue to affect portions of Jamaica tonight where isolated to scattered flash flooding and mudslides will be possible. Heavy rain will then impact the Cayman Islands and Cuba through Monday resulting in significant flooding and mudslides over Cuba. As Elsa approaches the Florida Keys, Florida Peninsula, and coastal Georgia Monday through Wednesday, heavy rainfall may result in isolated flash, urban, and minor river flooding. 2. Tropical storm conditions and a dangerous storm surge are expected with hurricane conditions possible in portions of eastern Cuba tonight. Tropical storm conditions are expected in portions of central and western Cuba tonight and Monday, and will spread into portions of the Florida Keys by late Monday. 3. Tropical Storm and Surge Surge Watches are in effect for portions of the west coast of the Florida peninsula where tropical storm conditions and a dangerous storm surge are possible beginning as early as Monday night and continuing into Tuesday. 4. There is a risk of tropical storm conditions, storm surge, and rainfall impacts along the remainder of the Florida Peninsula Tuesday night through Wednesday and the coasts of Georgia and the Carolinas Wednesday and Thursday. FORECAST POSITIONS AND MAX WINDS INIT 04/2100Z 19.8N 77.9W 50 KT 60 MPH 12H 05/0600Z 21.1N 79.4W 55 KT 65 MPH 24H 05/1800Z 22.7N 81.2W 50 KT 60 MPH...INLAND 36H 06/0600Z 24.2N 82.4W 50 KT 60 MPH...OVER WATER 48H 06/1800Z 25.8N 83.0W 50 KT 60 MPH 60H 07/0600Z 27.9N 83.0W 50 KT 60 MPH 72H 07/1800Z 30.5N 82.3W 30 KT 35 MPH...INLAND 96H 08/1800Z 34.9N 78.0W 30 KT 35 MPH...INLAND 120H 09/1800Z 40.0N 69.0W 35 KT 40 MPH...OVER WATER $$ Forecaster Pasch
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