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Tropical Depression Twelve Forecast Advisory Number 2
2021-09-01 04:31:24| National Hurricane Center (Atlantic)
Issued at 0300 UTC WED SEP 01 2021 525 WTNT22 KNHC 010231 TCMAT2 TROPICAL DEPRESSION TWELVE FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL AL122021 0300 UTC WED SEP 01 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 12.1N 23.2W AT 01/0300Z POSITION ACCURATE WITHIN 0 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 17 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 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 12.1N 23.2W AT 01/0300Z AT 01/0000Z CENTER WAS LOCATED NEAR 11.9N 22.3W FORECAST VALID 01/1200Z 12.6N 25.9W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 50NE 40SE 0SW 40NW. FORECAST VALID 02/0000Z 12.8N 29.2W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 0SE 0SW 0NW. 34 KT... 70NE 50SE 30SW 60NW. FORECAST VALID 02/1200Z 13.2N 32.1W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 20SE 0SW 30NW. 34 KT... 90NE 70SE 50SW 80NW. FORECAST VALID 03/0000Z 13.8N 35.1W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 20NE 0SE 0SW 20NW. 50 KT... 50NE 40SE 20SW 40NW. 34 KT...110NE 90SE 70SW 100NW. FORECAST VALID 03/1200Z 14.5N 37.5W MAX WIND 80 KT...GUSTS 100 KT. 50 KT... 70NE 50SE 40SW 60NW. 34 KT...140NE 100SE 80SW 120NW. FORECAST VALID 04/0000Z 15.4N 40.1W MAX WIND 85 KT...GUSTS 105 KT. 50 KT... 70NE 60SE 50SW 70NW. 34 KT...140NE 120SE 90SW 130NW. 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 05/0000Z 18.0N 44.5W MAX WIND 90 KT...GUSTS 110 KT. OUTLOOK VALID 06/0000Z 20.7N 47.9W MAX WIND 95 KT...GUSTS 115 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.1N 23.2W NEXT ADVISORY AT 01/0900Z $$ FORECASTER CANGIALOSI
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Tropical Depression Ida Public Advisory Number 23
2021-08-31 22:59:19| 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 400 PM CDT Tue Aug 31 2021
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Tropical Depression Twelve Graphics
2021-08-31 22:36:24| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 31 Aug 2021 20:36:24 GMT Wind Speed Probabilities last updated Tue, 31 Aug 2021 21:34:37 GMT
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Tropical Depression Kate Graphics
2021-08-31 22:36:02| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 31 Aug 2021 20:36:02 GMT Wind Speed Probabilities last updated Tue, 31 Aug 2021 21:28:32 GMT
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Tropical Depression Twelve Forecast Discussion Number 1
2021-08-31 22:35:19| National Hurricane Center (Atlantic)
Issued at 800 PM CVT Tue Aug 31 2021 142 WTNT42 KNHC 312035 TCDAT2 Tropical Depression Twelve Discussion Number 1 NWS National Hurricane Center Miami FL AL122021 800 PM CVT Tue Aug 31 2021 Satellite imagery, along with earlier scatterometer data, indicates that the low pressure area over the eastern tropical Atlantic has a well-defined circulation and sufficient organized convection to be considered a tropical depression. Thus, advisories are being initiated on Tropical Depression Twelve. The initial intensity is set at 30 kt based on satellite intensity estimates from TAFB and SAB as well as the scatterometer data. The initial motion is a somewhat uncertain 285/14. A strong low- to mid-level ridge to the north should cause the cyclone to move westward at a faster forward speed for the next 36 h or so, followed by a gradual turn toward the west-northwest and northwest by the end of the period as the depression moves along the southwest side of the ridge. There is some spread in the guidance after 36-48 h, with the GFS and GFS ensemble mean showing a more northward motion while the UKMET and the UKMET ensemble mean show a more westward motion. The official forecast is near the middle of the guidance envelope and is close to the HFIP corrected consensus model, which is a little to the south of the other consensus models. Conditions appear favorable for intensification during the next 72 h or so as the cyclone is in a moist environment with light shear and warm sea surface temperatures. The intensity forecast thus calls for the cyclone to become a tropical storm in 12 h or so and reach hurricane strength in 48-60 h. By the end of the forecast period, the forecast track takes the cyclone over slightly cooler water and into a drier air mass. Based on this, the intensity forecast calls for a slower development rate. The official intensity forecast is in the middle of the intensity guidance, and it is possibly conservative given that many of the global models are showing the development of a large and powerful tropical cyclone. FORECAST POSITIONS AND MAX WINDS INIT 31/2100Z 11.2N 21.1W 30 KT 35 MPH 12H 01/0600Z 11.6N 23.9W 35 KT 40 MPH 24H 01/1800Z 12.0N 27.5W 40 KT 45 MPH 36H 02/0600Z 12.1N 30.7W 50 KT 60 MPH 48H 02/1800Z 12.5N 33.7W 60 KT 70 MPH 60H 03/0600Z 13.3N 36.5W 70 KT 80 MPH 72H 03/1800Z 14.3N 39.0W 80 KT 90 MPH 96H 04/1800Z 16.5N 43.5W 85 KT 100 MPH 120H 05/1800Z 19.5N 47.5W 90 KT 105 MPH $$ Forecaster Beven
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