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Tropical Storm Nora Forecast Advisory Number 18

2021-08-30 04:40:47| National Hurricane Center (East Pacific)

Issued at 0300 UTC MON AUG 30 2021 000 WTPZ24 KNHC 300240 TCMEP4 TROPICAL STORM NORA FORECAST/ADVISORY NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL EP142021 0300 UTC MON AUG 30 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE GOVERNMENT OF MEXICO HAS DISCONTINUED THE TROPICAL STORM WARNING SOUTH OF BAHIA TEMPEHUAYA AND ALL OF THE TROPICAL STORM WATCH. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * BAHIA TEMPEHUAYA TO TOPOLOBAMPO MEXICO A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED OR OCCURRING SOMEWHERE WITHIN THE WARNING AREA. INTERESTS ELSEWHERE ALONG THE COAST OF SONORA SHOULD MONITOR THE PROGRESS OF NORA. TROPICAL STORM CENTER LOCATED NEAR 24.8N 107.9W AT 30/0300Z POSITION ACCURATE WITHIN 50 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 335 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1002 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 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 24.8N 107.9W AT 30/0300Z AT 30/0000Z CENTER WAS LOCATED NEAR 24.6N 107.8W FORECAST VALID 30/1200Z 25.4N 108.4W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 0NE 0SE 20SW 0NW. FORECAST VALID 31/0000Z 26.3N 109.1W...POST-TROP/INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 31/1200Z 27.0N 109.6W...POST-TROP/INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 01/0000Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 24.8N 107.9W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPEP4...AT 30/0600Z NEXT ADVISORY AT 30/0900Z $$ FORECASTER D. ZELINSKY

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Tropical Depression Ten Graphics

2021-08-30 04:38:53| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Mon, 30 Aug 2021 02:38:53 GMT Wind Speed Probabilities last updated Mon, 30 Aug 2021 03:29:01 GMT

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Tropical Depression Ten Forecast Discussion Number 8

2021-08-30 04:37:43| National Hurricane Center (Atlantic)

Issued at 1100 PM AST Sun Aug 29 2021 000 WTNT45 KNHC 300237 TCDAT5 Tropical Depression Ten Discussion Number 8 NWS National Hurricane Center Miami FL AL102021 1100 PM AST Sun Aug 29 2021 The depression is looking poorly organized this evening, with the low-level center exposed for the past several hours, and only a small area of convection located over 50 n mi east of the center. Strong west-northwesterly shear on the order of 20 to 30 kt due to a nearby subtropical jet stream has been impacting the cyclone since earlier today. A recent ASCAT pass showed peak winds of 29 kt, so the initial advisory intensity is being kept at 30 kt. The shear is forecast to increase even more later tonight and persist through Monday night. If the depression survives through that time period, then it may have an opportunity to strengthen in a few days when the cyclone moves north of the jet stream. The official NHC intensity forecast was little changed from the previous one, and is close to the HCCA and IVCN consensus. The lack of deep convection has likely been the cause of a wobble to the northwest over the past several hours, as the shallow depression has been steered primarily the low-level trade wind flow. The overall motion over the past 12 h is 350/7 kt. A weakness in the subtropical ridge to the north of the depression should induce a generally northward motion over the next few days. By the middle of this week, the weakness in the ridge is forecast to fill in, and force the cyclone on more of a northwestward path. The guidance continues to shift to the west with their solutions, as they come into better agreement on the strength of the ridge, and the NHC foreast has followed suit with a shift to the west. However, the latest NHC track forecast remains to the east of all of the consensus track guidance. Therefore, further future adjustments to the track may be necessary. FORECAST POSITIONS AND MAX WINDS INIT 30/0300Z 20.1N 50.6W 30 KT 35 MPH 12H 30/1200Z 21.1N 50.8W 30 KT 35 MPH 24H 31/0000Z 22.4N 50.4W 30 KT 35 MPH 36H 31/1200Z 23.5N 50.0W 30 KT 35 MPH 48H 01/0000Z 24.5N 50.3W 30 KT 35 MPH 60H 01/1200Z 25.6N 51.0W 35 KT 40 MPH 72H 02/0000Z 27.0N 51.9W 40 KT 45 MPH 96H 03/0000Z 30.0N 53.7W 45 KT 50 MPH 120H 04/0000Z 34.0N 53.3W 55 KT 65 MPH $$ Forecaster Latto

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Tropical Depression Ten Wind Speed Probabilities Number 8

2021-08-30 04:37:14| National Hurricane Center (Atlantic)

Issued at 0300 UTC MON AUG 30 2021 254 FONT15 KNHC 300237 PWSAT5 TROPICAL DEPRESSION TEN WIND SPEED PROBABILITIES NUMBER 8 NWS NATIONAL HURRICANE CENTER MIAMI FL AL102021 0300 UTC MON AUG 30 2021 AT 0300Z THE CENTER OF TROPICAL DEPRESSION TEN WAS LOCATED NEAR LATITUDE 20.1 NORTH...LONGITUDE 50.6 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 00Z MON 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 MON 12Z MON 00Z TUE 12Z TUE 00Z WED 00Z THU 00Z FRI PERIODS TO TO TO TO TO TO TO 12Z MON 00Z TUE 12Z TUE 00Z WED 00Z THU 00Z FRI 00Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER LATTO

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Summary for Tropical Depression Ten (AT5/AL102021)

2021-08-30 04:36:44| National Hurricane Center (Atlantic)

...TROPICAL DEPRESSION GETTING BLASTED BY STRONG UPPER-LEVEL WINDS... As of 11:00 PM AST Sun Aug 29 the center of Ten was located near 20.1, -50.6 with movement N at 8 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 35 mph.

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