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Post-Tropical Cyclone Ida Public Advisory Number 26
2021-09-01 16:48:46| National Hurricane Center (Atlantic)
The NHC has issued its final advisory on this system. Public Advisories from the Weather Prediction Center will provide updates as long as the system remains a flood threat. Issued at 1100 AM EDT Wed Sep 01 2021
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Post-Tropical Cyclone Julian Forecast Discussion Number 5
2021-08-30 04:46:14| National Hurricane Center (Atlantic)
Issued at 300 AM GMT Mon Aug 30 2021 380 WTNT41 KNHC 300246 TCDAT1 Post-Tropical Cyclone Julian Discussion Number 5 NWS National Hurricane Center Miami FL AL112021 300 AM GMT Mon Aug 30 2021 Julian has been showing signs of a transition into an extratropical cyclone over the past several hours. The deep convection has become detached to the northeast from the low-level center and cloud tops of that convection are warming. A line of convection to the south of the center resembles a frontal boundary, with recent scatterometer data showing a notable wind shift along that line. Based on the structural changes noted above, as well as a majority of FSU phase-space diagrams from the various global models, Julian is estimated to have transitioned to an extratropical cyclone. Recent ASCAT data showed the cyclone's intensity remains 50 kt. The cyclone is forecast to maintain this intensity through Monday before weakening. It is then forecast to dissipate in a few days over the northern Atlantic. The system should continue to move quickly northeastward through Monday, then turn northward and northwestward Monday night into Tuesday. This is the last advisory on Julian by the National Hurricane Center. Additional information on this system can be found in High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php FORECAST POSITIONS AND MAX WINDS INIT 30/0300Z 38.1N 41.9W 50 KT 60 MPH...POST-TROPICAL 12H 30/1200Z 40.3N 39.0W 50 KT 60 MPH...POST-TROP/EXTRATROP 24H 31/0000Z 44.1N 36.4W 50 KT 60 MPH...POST-TROP/EXTRATROP 36H 31/1200Z 48.5N 36.2W 45 KT 50 MPH...POST-TROP/EXTRATROP 48H 01/0000Z 53.0N 38.2W 40 KT 45 MPH...POST-TROP/EXTRATROP 60H 01/1200Z 57.0N 40.0W 40 KT 45 MPH...POST-TROP/EXTRATROP 72H 02/0000Z...DISSIPATED $$ Forecaster Latto
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Post-Tropical Cyclone Julian Graphics
2021-08-30 04:41:56| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Mon, 30 Aug 2021 02:41:56 GMT Wind Speed Probabilities last updated Mon, 30 Aug 2021 03:34:47 GMT
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Summary for Post-Tropical Cyclone Julian (AT1/AL112021)
2021-08-30 04:40:47| National Hurricane Center (Atlantic)
...JULIAN BECOMES AN EXTRATROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... As of 3:00 AM GMT Mon Aug 30 the center of Julian was located near 38.1, -41.9 with movement NE at 26 mph. The minimum central pressure was 995 mb with maximum sustained winds of about 60 mph.
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Post-Tropical Cyclone Julian Forecast Advisory Number 5
2021-08-30 04:39:14| National Hurricane Center (Atlantic)
Issued at 0300 UTC MON AUG 30 2021 000 WTNT21 KNHC 300239 TCMAT1 POST-TROPICAL CYCLONE JULIAN FORECAST/ADVISORY NUMBER 5 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112021 0300 UTC MON AUG 30 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. POST-TROPICAL CYCLONE CENTER LOCATED NEAR 38.1N 41.9W AT 30/0300Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 40 DEGREES AT 23 KT ESTIMATED MINIMUM CENTRAL PRESSURE 995 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 0NE 40SE 0SW 0NW. 34 KT....... 70NE 90SE 40SW 0NW. 12 FT SEAS.. 90NE 150SE 60SW 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 38.1N 41.9W AT 30/0300Z AT 30/0000Z CENTER WAS LOCATED NEAR 37.3N 42.8W FORECAST VALID 30/1200Z 40.3N 39.0W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 50SE 0SW 0NW. 34 KT... 70NE 100SE 50SW 0NW. FORECAST VALID 31/0000Z 44.1N 36.4W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 50SE 0SW 0NW. 34 KT... 70NE 100SE 50SW 0NW. FORECAST VALID 31/1200Z 48.5N 36.2W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 90NE 90SE 50SW 0NW. FORECAST VALID 01/0000Z 53.0N 38.2W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. 34 KT...110NE 80SE 30SW 40NW. FORECAST VALID 01/1200Z 57.0N 40.0W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. 34 KT...120NE 70SE 0SW 60NW. FORECAST VALID 02/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 38.1N 41.9W THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON THIS SYSTEM. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC. $$ FORECASTER LATTO
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