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Summary for Tropical Depression Fred (AT1/AL062021)
2021-08-13 19:31:50| National Hurricane Center (Atlantic)
...FRED PRODUCING HEAVY RAINFALL WHILE MOVING WEST-NORTHWESTWARD ALONG THE NORTHERN COAST OF CUBA... As of 2:00 PM EDT Fri Aug 13 the center of Fred was located near 22.3, -78.9 with movement WNW at 12 mph. The minimum central pressure was 1013 mb with maximum sustained winds of about 35 mph.
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Tropical Depression Fred Public Advisory Number 16A
2021-08-13 19:31:50| National Hurricane Center (Atlantic)
Issued at 200 PM EDT Fri Aug 13 2021 000 WTNT31 KNHC 131731 TCPAT1 BULLETIN Tropical Depression Fred Intermediate Advisory Number 16A NWS National Hurricane Center Miami FL AL062021 200 PM EDT Fri Aug 13 2021 ...FRED PRODUCING HEAVY RAINFALL WHILE MOVING WEST-NORTHWESTWARD ALONG THE NORTHERN COAST OF CUBA... SUMMARY OF 200 PM EDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...22.3N 78.9W ABOUT 40 MI...65 KM ESE OF CAIBARIEN CUBA ABOUT 245 MI...390 KM SE OF KEY WEST FLORIDA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1013 MB...29.92 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * The Florida Keys west of Ocean Reef to the Dry Tortugas * Florida Bay A Tropical Storm Watch is in effect for... * The Cuban provinces of Villa Clara, Sancti Spiritus, Ciego de Avila, and Camaguey * The southwest coast of Florida from Englewood south and east to Ocean Reef A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests in the Bahamas, elsewhere in Cuba, and the Florida Peninsula should monitor the progress of Fred. Additional watches and warnings could be required for portions of these areas later today. Interests in the Florida Panhandle should also monitor the progress of Fred. 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 PM EDT (1800 UTC), the center of Tropical Depression Fred was located near latitude 22.3 North, longitude 78.9 West. The depression is moving toward the west-northwest near 12 mph (19 km/h), and this general motion is expected to continue today. A turn toward the northwest is expected tonight or Saturday. On the forecast track, Fred is expected to continue moving along or near the north coast of central Cuba through tonight, be near the Florida Keys on Saturday, and move near or west of the west coast of the Florida peninsula Saturday night and Sunday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Little change in strength is expected today. After that, slow strengthening is expected, and Fred could become a tropical storm again tonight or Saturday. The estimated minimum central pressure is 1013 mb (29.92 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Fred can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT1, WMO header WTNT41 KNHC and on the web at www.hurricanes.gov/graphics_at1.shtml?key_messages. RAINFALL: Tropical Depression Fred is expected to produce the following rainfall amounts: Portions of Cuba...2 to 5 inches with isolated maximum totals of 8 inches. This rainfall may lead to scattered flash flooding. Across the Bahamas...1 to 3 inches, with isolated maximum totals of 5 inches. Today through Monday, 3 to 7 inches of rain is anticipated across the Keys, southern and central Florida north towards the Big Bend, with isolated maximum totals of 10 inches. Heavy rainfall could lead to areal, urban, and small stream flooding, and potentially worsen ongoing minor to isolated moderate river flooding over northern Florida. From Sunday onward, heavy rain and flood impacts could extend into inland portions of the Southeast and into the southern and central Appalachians and Piedmont as Fred interacts with a front in the area. WIND: Tropical storm conditions are possible in the watch area in Cuba through tonight. Tropical storm conditions are expected in the warning area across the Florida Keys on Saturday. Tropical storm conditions are possible in the watch area in Florida beginning Saturday. SURF: Swells generated by Fred are expected to spread across portions of the Bahamas and the northern coast of Cuba through tonight. These swells could reach the Florida Keys and southern Florida by early Saturday and increase along the west coast of Florida Saturday night and Sunday. Please consult products from your local weather office for more details. TORNADOES: There will be a risk of isolated tornadoes beginning Saturday afternoon over parts of central and south Florida. NEXT ADVISORY ------------- Next complete advisory at 500 PM EDT. $$ Forecaster Brennan
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Tropical Depression Fred Graphics
2021-08-13 19:31:41| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 13 Aug 2021 17:31:41 GMT Wind Speed Probabilities last updated Fri, 13 Aug 2021 15:22:58 GMT
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Tropical Depression Fred Graphics
2021-08-13 17:01:06| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 13 Aug 2021 15:01:06 GMT Wind Speed Probabilities last updated Fri, 13 Aug 2021 15:22:58 GMT
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Tropical Depression Fred Forecast Discussion Number 16
2021-08-13 16:51:17| National Hurricane Center (Atlantic)
Issued at 1100 AM EDT Fri Aug 13 2021 000 WTNT41 KNHC 131451 TCDAT1 Tropical Depression Fred Discussion Number 16 NWS National Hurricane Center Miami FL AL062021 1100 AM EDT Fri Aug 13 2021 Fred remains disorganized this morning. The low-level center, which is currently over the barrier islands of the north coast of Cuba, is exposed to the northwest of the main convective mass due to moderate southwesterly vertical shear. Reports from Air Force Reserve and NOAA Hurricane hunter aircraft show winds of 25-30 kt to the northeast of the center, so the initial intensity remains 30 kt. The central pressure is 1013 mb based on a combination of aircraft data and surface observations. The center has jogged a bit to the left during the past several hours, which has brought it to the Cuban coast. The longer-term initial motion is 295/10. The cyclone should continue west-northwestward for the next 12-24 h, followed by a turn toward the northwest as Fred approaches the western periphery of the subtropical ridge. This motion should take the center along the northern coast of Cuba today, near the Florida Keys and the southwestern coast of Florida on Saturday, and near or over the coast of the Florida Panhandle Sunday night or Monday. After that, a northward turn is expected as Fred moves into a weakness in the ridge over the southeastern United States. With both the initial position and the track guidance shifting westward since the last advisory, the new forecast track is also nudged a little to the west. The new track is east of the consensus models, especially from 24-60 h, and thus some additional adjustments could occur later today if the current model trends continue. Fred is continuing to experience about 20 kt of westerly or southwesterly vertical wind shear, and these conditions should continue for at least another 24 hours. Between that and land interaction, the intensity forecast calls for only modest strengthening during this time. After that, there is still relatively poor agreement on how much shear Fred will experience as it crosses the eastern Gulf of Mexico, with the ECMWF and the UKMET forecasting less shear than the GFS and CMC global models. Due to the uncertainty, the intensity forecast will keep the previous peak intensity of 45 kt. However, the intensity guidance during this period has trended a little higher, and the 45 kt peak is now a little below the upper edge of the guidance. It should be noted that much of the Florida peninsula is expected to be on the east side of Fred, which is where the heaviest rains, strongest winds, and a chance of tornadoes will be. KEY MESSAGES: 1. Today through Monday, heavy rainfall could lead to areal, urban, small stream, and exacerbated river flooding across southern and central Florida into the Big Bend. From Sunday onward, heavy rain and flood impacts could extend into other portions of the Southeast and into the southern and central Appalachians and Piedmont as Fred interacts with a front in that area. 2. Tropical storm conditions are expected in portions of the Florida Keys on Saturday, where a Tropical Storm Warning is in effect. 3. Tropical storm conditions are possible late Saturday and early Sunday across portions of the west coast of Florida in the Tropical Storm Watch area. The risk of tropical storm conditions will spread northward along the Florida west coast and to the Florida Panhandle Sunday and Monday. FORECAST POSITIONS AND MAX WINDS INIT 13/1500Z 22.3N 78.4W 30 KT 35 MPH...NEAR COAST OF CUBA 12H 14/0000Z 23.0N 79.7W 30 KT 35 MPH 24H 14/1200Z 24.2N 81.3W 35 KT 40 MPH 36H 15/0000Z 25.6N 82.5W 35 KT 40 MPH 48H 15/1200Z 27.2N 83.6W 40 KT 45 MPH 60H 16/0000Z 28.7N 84.6W 45 KT 50 MPH 72H 16/1200Z 30.2N 85.4W 35 KT 40 MPH...INLAND 96H 17/1200Z 33.0N 86.5W 25 KT 30 MPH...INLAND 120H 18/1200Z 36.5N 86.5W 20 KT 25 MPH...POST-TROP/INLAND $$ Forecaster Beven
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