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Post-Tropical Cyclone Teddy Forecast Discussion Number 46
2020-09-23 22:37:55| National Hurricane Center (Atlantic)
Issued at 500 PM AST Wed Sep 23 2020 000 WTNT45 KNHC 232037 TCDAT5 Post-Tropical Cyclone Teddy Discussion Number 46 NWS National Hurricane Center Miami FL AL202020 500 PM AST Wed Sep 23 2020 Teddy is moving quickly north-northeastward just west of Newfoundland this afternoon as a decaying extratropical low. Maximum winds from an earlier scatterometer pass were about 50 kt, and the winds have probably come down based on pressure data from Meat Cove as the storm left Nova Scotia, so the initial wind speed is set to 45 kt. Little change in intensity is expected overnight as Teddy races near northwestern Newfoundland and southeastern Labrador overnight. The storm is then forecast to move across the Labrador Sea on Thursday and become absorbed into a powerful extratropical low, where hurricane-force winds are forecast southwest of Greenland. No changes were made to the previous track or intensity forecasts. Even after Teddy passes Nova Scotia and Newfoundland, large swells creating dangerous rip currents will linger over much of the southwestern Atlantic basin for the next few days. Key Messages: 1. The most significant hazards expected from Teddy now are dangerous waves and high winds for Newfoundland, and Tropical Storm Warnings are in effect for parts of southwestern Newfoundland. 2. Very large swells produced by Teddy are expected to affect portions of Bermuda, the Leeward Islands, the Greater Antilles, the Bahamas, the east coast of the United States, and Atlantic Canada during the next couple of days. These swells are expected to cause life-threatening surf and rip current conditions. FORECAST POSITIONS AND MAX WINDS INIT 23/2100Z 48.6N 59.6W 45 KT 50 MPH...POST-TROP/EXTRATROP 12H 24/0600Z 52.0N 56.0W 45 KT 50 MPH...POST-TROP/EXTRATROP 24H 24/1800Z...DISSIPATED $$ Forecaster Blake
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Summary for Post-Tropical Cyclone Teddy (AT5/AL202020)
2020-09-23 22:37:20| National Hurricane Center (Atlantic)
...TEDDY MOVING JUST WEST OF NEWFOUNDLAND... ...STILL LIKELY TO PRODUCE DANGEROUS WAVES AND STRONG WINDS ACROSS SOUTHWESTERN NEWFOUNDLAND... As of 5:00 PM AST Wed Sep 23 the center of Teddy was located near 48.6, -59.6 with movement NNE at 31 mph. The minimum central pressure was 975 mb with maximum sustained winds of about 50 mph.
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Post-Tropical Cyclone Teddy Forecast Advisory Number 46
2020-09-23 22:36:55| National Hurricane Center (Atlantic)
Issued at 2100 UTC WED SEP 23 2020 000 WTNT25 KNHC 232036 TCMAT5 POST-TROPICAL CYCLONE TEDDY FORECAST/ADVISORY NUMBER 46 NWS NATIONAL HURRICANE CENTER MIAMI FL AL202020 2100 UTC WED SEP 23 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * PORT AUX BASQUES TO FRANCOIS NEWFOUNDLAND A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED WITHIN THE WARNING AREA. POST-TROPICAL CYCLONE CENTER LOCATED NEAR 48.6N 59.6W AT 23/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 30 DEGREES AT 27 KT ESTIMATED MINIMUM CENTRAL PRESSURE 975 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT.......120NE 180SE 150SW 180NW. 12 FT SEAS..240NE 640SE 990SW 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 48.6N 59.6W AT 23/2100Z AT 23/1800Z CENTER WAS LOCATED NEAR 47.4N 60.4W FORECAST VALID 24/0600Z 52.0N 56.0W...POST-TROP/EXTRATROP MAX WIND 45 KT...GUSTS 55 KT. 34 KT...150NE 180SE 120SW 150NW. FORECAST VALID 24/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 48.6N 59.6W INTERMEDIATE PUBLIC ADVISORY...WTNT35 KNHC/MIATCPAT5...AT 24/0000Z NEXT ADVISORY AT 24/0300Z $$ FORECASTER BLAKE
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Post-Tropical Cyclone Teddy Graphics
2020-09-23 19:55:26| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 23 Sep 2020 17:55:26 GMT Wind Speed Probabilities last updated Wed, 23 Sep 2020 15:25:16 GMT
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Summary for Post-Tropical Cyclone Teddy (AT5/AL202020)
2020-09-23 19:54:52| National Hurricane Center (Atlantic)
...TEDDY MOVING OVER THE GULF OF ST. LAWRENCE... ...STILL LIKELY TO PRODUCE DANGEROUS WAVES AND STRONG WINDS ACROSS PORTIONS OF NOVA SCOTIA AND NEWFOUNDLAND... As of 2:00 PM AST Wed Sep 23 the center of Teddy was located near 47.5, -60.3 with movement NNE at 29 mph. The minimum central pressure was 974 mb with maximum sustained winds of about 60 mph.
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