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Tropical Storm Zeta Graphics
2020-10-29 12:50:13| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Thu, 29 Oct 2020 11:50:13 GMT Wind Speed Probabilities last updated Thu, 29 Oct 2020 09:25:16 GMT
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Summary for Tropical Storm Zeta (AT3/AL282020)
2020-10-29 12:48:42| National Hurricane Center (Atlantic)
...ZETA CONTINUES TO PRODUCE DAMAGING WINDS ACROSS PORTIONS OF THE SOUTHEASTERN UNITED STATES... As of 8:00 AM EDT Thu Oct 29 the center of Zeta was located near 35.3, -83.5 with movement NE at 39 mph. The minimum central pressure was 990 mb with maximum sustained winds of about 60 mph.
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Tropical Storm Zeta Public Advisory Number 19A
2020-10-29 12:48:42| National Hurricane Center (Atlantic)
Issued at 800 AM EDT Thu Oct 29 2020 000 WTNT33 KNHC 291148 TCPAT3 BULLETIN Tropical Storm Zeta Intermediate Advisory Number 19A NWS National Hurricane Center Miami FL AL282020 800 AM EDT Thu Oct 29 2020 ...ZETA CONTINUES TO PRODUCE DAMAGING WINDS ACROSS PORTIONS OF THE SOUTHEASTERN UNITED STATES... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...35.3N 83.5W ABOUT 50 MI...80 KM W OF ASHEVILLE NORTH CAROLINA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NE OR 40 DEGREES AT 39 MPH...63 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.23 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning from Navarre to the Walton/Bay County Line, Florida has been canceled. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. 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 800 AM EDT (1200 UTC), the center of Tropical Storm Zeta was located near latitude 35.3 North, longitude 83.5 West. Zeta is racing toward the northeast near 39 mph (63 km/h). An even faster northeastward motion is expected later today, followed by a rapid east-northeastward motion tonight and Friday. On the forecast track, the center of Zeta will move across portions of the southeastern U.S. this morning, across the Mid-Atlantic states this afternoon, and emerge over the western Atlantic by tonight. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Zeta is expected to become a non-tropical gale-force low later today. The low should become absorbed by a frontal system over the western Atlantic by Friday night. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. A sustained wind of 41 mph (67 km/h) and a gust to 82 mph (131 km/h) was recently reported at Cashiers, North Carolina. The estimated minimum central pressure based on surface observations is 990 mb (29.18 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Zeta can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT3.shtml. STORM SURGE: Water levels along the Central Gulf coast will gradually subside throughout the day. Consult products issued by your local National Weather Service forecast office for additional information. WIND: Damaging winds, especially in gusts, are spreading across northern Georgia, western South Carolina, and western North Carolina. These winds will shift into other portions of North Carolina and southeastern Virginia later today. Wind gusts could be especially severe across the southern Appalachian Mountains. RAINFALL: Areas of heavy rainfall, both in advance of Zeta and along the track of Zeta, will impact areas from the central Appalachians, Mid-Atlantic and lower to middle Ohio Valley through Thursday. Rainfall totals of 1 to 3 inches are expected across these areas, resulting in possible flash, urban, small stream, and isolated minor river flooding. TORNADOES: A tornado or two is possible later today over the Carolinas and southern Virginia. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Pasch
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Tropical Storm Zeta Forecast Advisory Number 19
2020-10-29 09:40:16| National Hurricane Center (Atlantic)
Issued at 0900 UTC THU OCT 29 2020 000 WTNT23 KNHC 290840 TCMAT3 TROPICAL STORM ZETA FORECAST/ADVISORY NUMBER 19 NWS NATIONAL HURRICANE CENTER MIAMI FL AL282020 0900 UTC THU OCT 29 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE STORM SURGE WARNING HAS BEEN DISCONTINUED. INFORMATION ON ONGOING COASTAL FLOODING CAN BE FOUND IN COASTAL FLOOD PRODUCTS ISSUED BY LOCAL NATIONAL WEATHER SERVICE OFFICES. THE TROPICAL STORM WARNING FROM THE MISSISSIPPI-ALABAMA BORDER TO WEST OF NAVARRE...FLORIDA...HAS BEEN CANCELED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * NAVARRE TO WALTON/BAY COUNTY LINE FLORIDA A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. TROPICAL STORM CENTER LOCATED NEAR 34.0N 85.5W AT 29/0900Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 40 DEGREES AT 34 KT ESTIMATED MINIMUM CENTRAL PRESSURE 988 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 0NE 50SE 0SW 0NW. 34 KT....... 70NE 150SE 40SW 0NW. 12 FT SEAS.. 0NE 0SE 240SW 0NW. 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 34.0N 85.5W AT 29/0900Z AT 29/0600Z CENTER WAS LOCATED NEAR 32.8N 87.5W FORECAST VALID 29/1800Z 37.7N 79.1W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 150SE 0SW 0NW. FORECAST VALID 30/0600Z 40.8N 66.9W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 60SE 60SW 0NW. 34 KT... 70NE 200SE 200SW 120NW. FORECAST VALID 30/1800Z 43.4N 54.6W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 60SE 60SW 0NW. 34 KT... 90NE 240SE 270SW 150NW. FORECAST VALID 31/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 34.0N 85.5W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 29/1200Z NEXT ADVISORY AT 29/1500Z $$ FORECASTER CANGIALOSI
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Tropical Storm Zeta Forecast Discussion Number 19
2020-10-29 09:40:14| National Hurricane Center (Atlantic)
Issued at 400 AM CDT Thu Oct 29 2020 000 WTNT43 KNHC 290840 TCDAT3 Tropical Storm Zeta Discussion Number 19 NWS National Hurricane Center Miami FL AL282020 400 AM CDT Thu Oct 29 2020 Surface observations and Doppler radar data indicate that Zeta weakened to a tropical storm around 0600 UTC when it was located over central Alabama. During the past few hours, the cyclone's structure has degraded further with the center no longer easily apparent in radar images and convection appearing more ragged and asymmetric. The initial intensity is lowered to 50 kt for this advisory, and that could be a little generous. The minimum pressure is estimated to be 988 mb based on surface observations. The storm continues to accelerate, and the latest initial motion is northeastward at 34 kt. Zeta is expected to race northeastward today in the fast steering flow between a potent mid- to upper-level low to its west and a high pressure ridge to its southeast. This pattern should take the cyclone across the southeast and Mid-Atlantic states throughout the day, before emerging over the western Atlantic this evening. An even faster east-northeastward motion is predicted tonight and on Friday until the cyclone dissipates by Friday night. The tropical storm is forecast to weaken a little more during the next several hours as it remains over land, and Zeta will likely become extratropical by the time it reaches the mid-Atlantic states this afternoon. However, after that time, the models show the cyclone leveling off in strength or perhaps even re-intensifying over the western Atlantic before it becomes absorbed into a frontal zone in 36 to 48 hours. The NHC intensity forecast follows the GFS and ECMWF models. KEY MESSAGES: 1. Strong, damaging wind gusts, which could cause tree damage and power outages, will continue to spread well inland across portions of northeastern Alabama, northern Georgia, the Carolinas, and southeastern Virginia today due to Zeta's fast forward speed. Wind gusts could be especially severe across the southern Appalachian Mountains. 2. Through today, heavy rainfall is expected near and in advance of Zeta from portions of the central Appalachians, Mid-Atlantic and lower to middle Ohio Valley. This rainfall may lead to flash, urban, small stream, and isolated minor river flooding. FORECAST POSITIONS AND MAX WINDS INIT 29/0900Z 34.0N 85.5W 50 KT 60 MPH...INLAND 12H 29/1800Z 37.7N 79.1W 45 KT 50 MPH...POST-TROP/EXTRATROP 24H 30/0600Z 40.8N 66.9W 50 KT 60 MPH...POST-TROP/EXTRATROP 36H 30/1800Z 43.4N 54.6W 50 KT 60 MPH...POST-TROP/EXTRATROP 48H 31/0600Z...DISSIPATED $$ Forecaster Cangialosi
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