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Tropical Depression Wilfred Public Advisory Number 10
2020-09-20 22:33:32| National Hurricane Center (Atlantic)
Issued at 500 PM AST Sun Sep 20 2020 000 WTNT33 KNHC 202033 TCPAT3 BULLETIN Tropical Depression Wilfred Advisory Number 10 NWS National Hurricane Center Miami FL AL232020 500 PM AST Sun Sep 20 2020 ...WILFRED REMAINS A TROPICAL DEPRESSION OVER THE OPEN ATLANTIC... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...15.9N 45.8W ABOUT 1445 MI...2330 KM W OF THE CABO VERDE ISLANDS ABOUT 1030 MI...1660 KM E OF THE LESSER ANTILLES MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 20 MPH...31 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 Depression Wilfred was located near latitude 15.9 North, longitude 45.8 West. The depression is moving toward the west-northwest near 20 mph (31 km/h). Wilfred should slow its forward speed while heading toward the west or west-northwestward for the next couple days until dissipation. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Wilfred should weaken to a remnant low within a day or two, but could also degenerate into a trough of low pressure during that time. 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 Landsea
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Tropical Depression Wilfred Wind Speed Probabilities Number 10
2020-09-20 22:33:32| National Hurricane Center (Atlantic)
Issued at 2100 UTC SUN SEP 20 2020 000 FONT13 KNHC 202033 PWSAT3 TROPICAL DEPRESSION WILFRED WIND SPEED PROBABILITIES NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL AL232020 2100 UTC SUN SEP 20 2020 AT 2100Z THE CENTER OF TROPICAL DEPRESSION WILFRED WAS LOCATED NEAR LATITUDE 15.9 NORTH...LONGITUDE 45.8 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 18Z SUN AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 18Z SUN 06Z MON 18Z MON 06Z TUE 18Z TUE 18Z WED 18Z THU PERIODS TO TO TO TO TO TO TO 06Z MON 18Z MON 06Z TUE 18Z TUE 18Z WED 18Z THU 18Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER LANDSEA
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Tropical Depression Wilfred Forecast Advisory Number 10
2020-09-20 22:33:08| National Hurricane Center (Atlantic)
Issued at 2100 UTC SUN SEP 20 2020 000 WTNT23 KNHC 202032 TCMAT3 TROPICAL DEPRESSION WILFRED FORECAST/ADVISORY NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL AL232020 2100 UTC SUN SEP 20 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 15.9N 45.8W AT 20/2100Z POSITION ACCURATE WITHIN 45 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 17 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 12 FT SEAS.. 60NE 0SE 0SW 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 15.9N 45.8W AT 20/2100Z AT 20/1800Z CENTER WAS LOCATED NEAR 15.8N 45.1W FORECAST VALID 21/0600Z 16.3N 48.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 21/1800Z 16.5N 49.9W MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 22/0600Z 16.5N 50.8W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 22/1800Z 16.8N 51.8W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 23/0600Z 17.8N 52.7W...DISSIPATED MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 23/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 15.9N 45.8W NEXT ADVISORY AT 21/0300Z $$ FORECASTER LANDSEA
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Tropical Depression Wilfred Graphics
2020-09-20 16:53:16| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sun, 20 Sep 2020 14:53:16 GMT Wind Speed Probabilities last updated Sun, 20 Sep 2020 15:40:49 GMT
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Tropical Depression Wilfred Forecast Discussion Number 9
2020-09-20 16:50:28| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Sun Sep 20 2020 000 WTNT43 KNHC 201450 TCDAT3 Tropical Depression Wilfred Discussion Number 9 NWS National Hurricane Center Miami FL AL232020 1100 AM AST Sun Sep 20 2020 First-light visible imagery of Wilfred shows a well-defined center south of widespread - but not very well banded - deep convection. The improved positioning this morning allows for a more confident assessment of its movement toward the west-northwest at 17 kt. As the system slowly winds down, it will be increasingly steered by the low-level flow indicating a slower movement toward the west or west-northwest until dissipation. The new track forecast is slightly farther west due to the faster initial motion within 36 hours, then slightly farther east afterward based upon the TVCN track consensus approach. While the ASCAT scatterometer passes this morning missed Wilfred's center, ASCAT-B observed 30 kt peak winds in its northeastern quadrant. This value is used as the initial intensity, consistent with both SAB and TAFB's Dvorak classifications. The combination of outflow from Hurricane Teddy as well as winds on the southern side of an impinging upper-level trough are causing about 20 kt vertical shear from the west-northwest. This shear should increase over the next couple of days as Wilfred gets into closer proximity with the trough. The strong shear and dry mid-level humidities should continue to cause a reduction of the deep convection and lead to the system becoming a remnant low in a couple of days followed within another day or so by dissipation. All statistical and dynamical intensity guidance is in agreement with this scenario. Alternatively, Wilfred could become a remnant low sooner, if the convection ceases later today or Monday. FORECAST POSITIONS AND MAX WINDS INIT 20/1500Z 15.7N 44.2W 30 KT 35 MPH 12H 21/0000Z 16.2N 46.3W 30 KT 35 MPH 24H 21/1200Z 16.5N 48.4W 25 KT 30 MPH 36H 22/0000Z 16.8N 50.0W 25 KT 30 MPH 48H 22/1200Z 17.0N 51.5W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 23/0000Z 17.2N 52.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 23/1200Z...DISSIPATED $$ Forecaster Landsea
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