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Tropical Storm Vicky Wind Speed Probabilities Number 8
2020-09-16 04:31:24| National Hurricane Center (Atlantic)
Issued at 0300 UTC WED SEP 16 2020 000 FONT11 KNHC 160231 PWSAT1 TROPICAL STORM VICKY WIND SPEED PROBABILITIES NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL AL212020 0300 UTC WED SEP 16 2020 AT 0300Z THE CENTER OF TROPICAL STORM VICKY WAS LOCATED NEAR LATITUDE 21.6 NORTH...LONGITUDE 33.1 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 45 KTS...50 MPH...85 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 00Z WED 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 00Z WED 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN PERIODS TO TO TO TO TO TO TO 12Z WED 00Z THU 12Z THU 00Z FRI 00Z SAT 00Z SUN 00Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER BLAKE
Summary for Tropical Storm Vicky (AT1/AL212020)
2020-09-16 04:30:47| National Hurricane Center (Atlantic)
...VICKY REFUSES TO WEAKEN DESPITE THE SHEAR... As of 11:00 PM AST Tue Sep 15 the center of Vicky was located near 21.6, -33.1 with movement WNW at 12 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 50 mph.
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Tropical Storm Vicky Public Advisory Number 8
2020-09-16 04:30:47| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Tue Sep 15 2020 000 WTNT31 KNHC 160230 TCPAT1 BULLETIN Tropical Storm Vicky Advisory Number 8 NWS National Hurricane Center Miami FL AL212020 1100 PM AST Tue Sep 15 2020 ...VICKY REFUSES TO WEAKEN DESPITE THE SHEAR... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...21.6N 33.1W ABOUT 710 MI...1140 KM NW OF THE CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Storm Vicky was located near latitude 21.6 North, longitude 33.1 West. Vicky is moving toward the west-northwest near 12 mph (19 km/h). This general motion is expected overnight, followed by a westward motion starting late Wednesday, and a west-southwestward motion by late Thursday. Satellite-derived winds indicate that xaximum sustained winds are near 50 mph (85 km/h) with higher gusts. Gradual weakening is still forecast over the next few days, and the system could become a remannt low on Thursday. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Blake
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Tropical Storm Vicky Forecast Advisory Number 8
2020-09-16 04:30:47| National Hurricane Center (Atlantic)
Issued at 0300 UTC WED SEP 16 2020 000 WTNT21 KNHC 160230 TCMAT1 TROPICAL STORM VICKY FORECAST/ADVISORY NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL AL212020 0300 UTC WED SEP 16 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 21.6N 33.1W AT 16/0300Z POSITION ACCURATE WITHIN 25 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT....... 60NE 30SE 30SW 70NW. 12 FT SEAS..120NE 30SE 30SW 30NW. 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 21.6N 33.1W AT 16/0300Z AT 16/0000Z CENTER WAS LOCATED NEAR 21.4N 32.6W FORECAST VALID 16/1200Z 22.0N 34.5W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 50NE 20SE 0SW 60NW. FORECAST VALID 17/0000Z 22.3N 36.3W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 40NE 20SE 0SW 40NW. FORECAST VALID 17/1200Z 22.4N 38.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 18/0000Z 22.3N 39.7W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 18/1200Z 22.0N 41.5W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 19/0000Z 21.5N 43.5W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 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 20/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.6N 33.1W NEXT ADVISORY AT 16/0900Z $$ FORECASTER BLAKE
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Tropical Storm Karina Forecast Discussion Number 12
2020-09-15 22:59:29| National Hurricane Center (East Pacific)
Issued at 200 PM PDT Tue Sep 15 2020 000 WTPZ41 KNHC 152059 TCDEP1 Tropical Storm Karina Discussion Number 12 NWS National Hurricane Center Miami FL EP162020 Issued by NWS Central Pacific Hurricane Center Honolulu HI 200 PM PDT Tue Sep 15 2020 Latest satellite images show little significant change in the organization of deep convection associated with Karina since the previous advisory. Although the thunderstorms are primarily limited to the southwest semicircle, they remain over the center, and outflow in the northeast semicircle appears somewhat improved in the last couple of hours. A blend of subjective Dvorak current intensity estimates of 3.0/45 kt from SAB/HFO and 3.5/55 kt from TAFB supports maintaining an initial intensity of 50 kt. Karina is crossing the 26C isotherm with an initial motion estimate of 305/10 kt, and much cooler waters lie along the forecast track. Karina is being steered by a mid- and upper-level ridge to the centered to the northeast and north respectively, and the short term forecast anticipates some relaxation of the recent northeasterly shear as Karina rounds the ridges. This should lead to slow weakening in the short term, and as south to southwesterly shear increases after about 24 hours, Karina will continue to weaken. Simulated satellite imagery based on HWRF guidance indicates the cyclone will become convection-free within about 48 hours, with dissipation following soon thereafter. As Karina weakens and becomes increasingly shallow, it will be steered by the low-level northeasterly trade wind flow supplied by a surface high centered to the distant northwest. The updated track forecast lies along the same trajectory as the previous, but is shifted slightly southward due to recent observed motion, and is near the middle of guidance envelope. The intensity forecast is essentially unchanged and closely follows trends presented by SHIPS and FSSE. FORECAST POSITIONS AND MAX WINDS INIT 15/2100Z 20.7N 122.1W 50 KT 60 MPH 12H 16/0600Z 21.6N 123.3W 45 KT 50 MPH 24H 16/1800Z 22.5N 124.8W 40 KT 45 MPH 36H 17/0600Z 23.2N 126.0W 35 KT 40 MPH 48H 17/1800Z 23.5N 127.2W 30 KT 35 MPH 60H 18/0600Z 23.3N 128.4W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 18/1800Z 22.5N 129.5W 20 KT 25 MPH...POST-TROP/REMNT LOW 96H 19/1800Z...DISSIPATED $$ Forecaster Birchard
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