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Tropical Storm Wilfred Public Advisory Number 2
2020-09-18 22:44:00| National Hurricane Center (Atlantic)
Issued at 500 PM AST Fri Sep 18 2020 901 WTNT33 KNHC 182043 TCPAT3 BULLETIN Tropical Storm Wilfred Advisory Number 2 NWS National Hurricane Center Miami FL AL232020 500 PM AST Fri Sep 18 2020 ...WILFRED COULD STRENGTHEN OVERNIGHT... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...12.5N 34.4W ABOUT 735 MI...1185 KM WSW OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Tropical Storm Wilfred was located near latitude 12.5 North, longitude 34.4 West. Wilfred is moving toward the west-northwest near 18 mph (30 km/h), and this general motion is expected to continue for the next few days. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Wilfred could strengthen a little overnight and Saturday before weakening likely begins by Sunday. Tropical-storm-force winds extend outward up to 140 miles (220 km) from the center. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Blake
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Tropical Storm Wilfred Forecast Advisory Number 2
2020-09-18 22:44:00| National Hurricane Center (Atlantic)
Issued at 2100 UTC FRI SEP 18 2020 900 WTNT23 KNHC 182043 TCMAT3 TROPICAL STORM WILFRED FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL AL232020 2100 UTC FRI SEP 18 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 12.5N 34.4W AT 18/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 16 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 30NE 120SE 30SW 0NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 12.5N 34.4W AT 18/2100Z AT 18/1800Z CENTER WAS LOCATED NEAR 12.3N 33.7W FORECAST VALID 19/0600Z 13.2N 36.7W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 30NE 90SE 30SW 30NW. FORECAST VALID 19/1800Z 14.3N 39.7W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 60NE 60SE 20SW 40NW. FORECAST VALID 20/0600Z 15.4N 42.6W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 50NE 40SE 20SW 30NW. FORECAST VALID 20/1800Z 16.4N 45.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 30SE 0SW 20NW. FORECAST VALID 21/0600Z 17.1N 48.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 21/1800Z 17.5N 50.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 22/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 12.5N 34.4W NEXT ADVISORY AT 19/0300Z $$ FORECASTER BLAKE
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Subtropical Storm Alpha Forecast Discussion Number 1
2020-09-18 18:34:41| National Hurricane Center (Atlantic)
Issued at 430 PM GMT Fri Sep 18 2020 000 WTNT44 KNHC 181634 TCDAT4 Subtropical Storm Alpha Special Discussion Number 1 NWS National Hurricane Center Miami FL AL242020 430 PM GMT Fri Sep 18 2020 The small low pressure area that has been rotating around a larger extratropical low in the far northeastern Atlantic has become better organized this morning. Moderate-to-deep convection has persisted near the center since last night, scatterometer data shows a closed 40-kt low, and radar images from Portugal show a definite organized convective pattern. While the system is still in the cyclonic envelope of the large extratropical low and likely neutral- or cold-core, it has developed enough tropical characteristics to be considered a subtropical storm. The initial intensity is set to 45 kt in accordance with the scatterometer data, assuming some undersampling for this small system. Little change in strength is forecast until landfall in Portugal during the next couple of hours. Global models show the small low moving northeastward at about 15 kt for the next 24 hours before dissipating over northern Spain or the Bay of Biscay. The track and intensity forecasts are consistent with the consensus guidance. Additional information on the hazards from this system can be found in products from the Portuguese Institute for Sea and Atmosphere at www.ipma.pt. FORECAST POSITIONS AND MAX WINDS INIT 18/1630Z 39.9N 9.3W 45 KT 50 MPH 12H 19/0000Z 41.5N 7.5W 30 KT 35 MPH...POST-TROP/INLAND 24H 19/1200Z 44.2N 4.2W 30 KT 35 MPH...POST-TROP/EXTRATROP 36H 20/0000Z...DISSIPATED $$ Forecaster Blake
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Subtropical Storm Alpha Graphics
2020-09-18 18:34:16| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 18 Sep 2020 16:34:16 GMT Wind Speed Probabilities last updated Fri, 18 Sep 2020 16:34:16 GMT
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Summary for Subtropical Storm Alpha (AT4/AL242020)
2020-09-18 18:33:40| National Hurricane Center (Atlantic)
...SUBTROPICAL STORM ALPHA FORMS NEAR THE COAST OF PORTUGAL... ...EXPECTED TO BE SHORT-LIVED BUT BRING WINDS AND RAIN TO PORTIONS OF PORTUGAL... As of 4:30 PM GMT Fri Sep 18 the center of Alpha was located near 39.9, -9.3 with movement NE at 17 mph. The minimum central pressure was 999 mb with maximum sustained winds of about 50 mph.
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