je.st
news
Tag: tropical storm
Tropical Storm Paulette Forecast Discussion Number 7
2020-09-08 16:33:08| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Tue Sep 08 2020 000 WTNT42 KNHC 081433 TCDAT2 Tropical Storm Paulette Discussion Number 7 NWS National Hurricane Center Miami FL AL172020 1100 AM AST Tue Sep 08 2020 Paulette's organization has noticeably improved since last night. The tropical storm is still sheared, with its outflow restricted to the southwest, however overnight AMSU imagery indicated that convection was beginning to wrap around the western portion of its circulation. The intensity estimate has been increased to 55 kt based on Dvorak estimates from TAFB and SAB. Paulette has manged to strengthen despite the shear, and some additional short-term strengthening is certainly possible. It is not out of the question that Paulette could become a hurricane, at least briefly. The global models indicate that the shear will increase on Wednesday, which should cause Paulette's intensity to level off, and more likely, decrease. The NHC intensity forecast is just above the intensity consensus for the first 3 days, out of respect for Paulette's recent intensification above most of the guidance. By the weekend, Paulette's strength will heavily depend on its exact orientation relative to an upper-level low that is expected to be located west or southwest of the tropical storm. Some restrengthening could occur then, but the NHC forecast just shows a steady intensity, near the middle of the guidance suite. Paulette is forecast to turn generally west-northwestward or westward tonight and Wednesday as a mid-level ridge builds to its north. The guidance then indicates that late this week Paulette will turn northwestward when the ridge weakens. Differences in Paulette's forward speed on Wednesday and Thursday could result in a very different track late in the period since it affects the point at which the tropical storm will turn northwestward. The NHC forecast is very close to the multi-model consensus throughout the 5-day period, but confidence in the forecast beyond 72 h is lower than normal due to high spread in the track guidance. FORECAST POSITIONS AND MAX WINDS INIT 08/1500Z 18.4N 43.3W 55 KT 65 MPH 12H 09/0000Z 19.0N 44.2W 60 KT 70 MPH 24H 09/1200Z 19.8N 45.8W 60 KT 70 MPH 36H 10/0000Z 20.3N 47.8W 60 KT 70 MPH 48H 10/1200Z 20.6N 49.7W 55 KT 65 MPH 60H 11/0000Z 20.7N 51.2W 55 KT 65 MPH 72H 11/1200Z 21.2N 52.6W 50 KT 60 MPH 96H 12/1200Z 23.1N 55.4W 50 KT 60 MPH 120H 13/1200Z 26.0N 58.5W 50 KT 60 MPH $$ Forecaster Zelinsky
Tags: number
discussion
storm
tropical
Tropical Storm Paulette Wind Speed Probabilities Number 7
2020-09-08 16:32:08| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE SEP 08 2020 000 FONT12 KNHC 081431 PWSAT2 TROPICAL STORM PAULETTE WIND SPEED PROBABILITIES NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL AL172020 1500 UTC TUE SEP 08 2020 AT 1500Z THE CENTER OF TROPICAL STORM PAULETTE WAS LOCATED NEAR LATITUDE 18.4 NORTH...LONGITUDE 43.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 55 KTS...65 MPH...100 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 12Z TUE AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 12Z TUE 00Z WED 12Z WED 00Z THU 12Z THU 12Z FRI 12Z SAT PERIODS TO TO TO TO TO TO TO 00Z WED 12Z WED 00Z THU 12Z THU 12Z FRI 12Z SAT 12Z SUN FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER ZELINSKY
Tropical Storm Rene Forecast Discussion Number 6
2020-09-08 16:32:07| National Hurricane Center (Atlantic)
Issued at 200 PM CVT Tue Sep 08 2020 000 WTNT43 KNHC 081431 TCDAT3 Tropical Storm Rene Discussion Number 6 NWS National Hurricane Center Miami FL AL182020 200 PM CVT Tue Sep 08 2020 Rene is starting to pull away from the Cabo Verde Islands, though some of the outer rainbands are affecting the far northwestern islands. Although the tropical storm has a well-defined circulation, the convective banding features have not become any better organized since yesterday. The satellite classifications are largely unchanged and range from 25 to 37 kt, and a recent ASCAT-B pass showed maximum winds in the 30-35 kt range. Based on all of this data, the initial intensity is again held at 35 kt. The tropical storm is moving westward at a faster pace of 14 kt. A mid-level ridge to the north of Rene is expected to build westward, which should cause the cyclone to move westward to west-northwestward at about the same forward speed during the next couple of days. After that time, the storm is expected to slow down and turn northwestward and then northward as it moves into a pronounced weakness in the ridge. Although the models agree on the overall scenario, there are notable differences in where and how sharply Rene will recurve with the GFS on the right side of the guidance and the ECMWF on the left. The NHC track forecast is adjusted a little to the right of the previous one, but still lies closer to the left side of the guidance envelope between the HCCA and TVCA consensus aids. Although Rene has not strengthened since yesterday, the models continue to suggest that the storm will steadily strengthen during the next few days while it moves over relatively warm 26-27 C waters and remains in environment of low wind shear and high moisture. Beyond that time, increasing southwesterly wind shear and drier air should end the strengthening trend and induce gradual weakening. The NHC intensity forecast is largely an update of the previous one and lies near the HCCA and IVCN models. Key Messages: 1. Rene is expected to produce tropical storm conditions across portions of the western Cabo Verde Islands for a few more hours. A Tropical Storm Warning remains in effect for those islands. 2. Rene will continue to bring locally heavy rainfall to portions of the western Cabo Verde Islands today. FORECAST POSITIONS AND MAX WINDS INIT 08/1500Z 16.5N 26.5W 35 KT 40 MPH 12H 09/0000Z 16.8N 28.5W 35 KT 40 MPH 24H 09/1200Z 17.4N 31.1W 45 KT 50 MPH 36H 10/0000Z 18.3N 33.7W 55 KT 65 MPH 48H 10/1200Z 19.3N 36.2W 65 KT 75 MPH 60H 11/0000Z 20.5N 38.2W 70 KT 80 MPH 72H 11/1200Z 22.1N 39.8W 70 KT 80 MPH 96H 12/1200Z 26.5N 42.2W 60 KT 70 MPH 120H 13/1200Z 29.7N 42.0W 50 KT 60 MPH $$ Forecaster Cangialosi
Tags: number
discussion
storm
tropical
Tropical Storm Rene Wind Speed Probabilities Number 6
2020-09-08 16:31:42| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE SEP 08 2020 000 FONT13 KNHC 081431 PWSAT3 TROPICAL STORM RENE WIND SPEED PROBABILITIES NUMBER 6 NWS NATIONAL HURRICANE CENTER MIAMI FL AL182020 1500 UTC TUE SEP 08 2020 AT 1500Z THE CENTER OF TROPICAL STORM RENE WAS LOCATED NEAR LATITUDE 16.5 NORTH...LONGITUDE 26.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 12Z TUE AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 12Z TUE 00Z WED 12Z WED 00Z THU 12Z THU 12Z FRI 12Z SAT PERIODS TO TO TO TO TO TO TO 00Z WED 12Z WED 00Z THU 12Z THU 12Z FRI 12Z SAT 12Z SUN FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER CANGIALOSI
Summary for Tropical Storm Paulette (AT2/AL172020)
2020-09-08 16:31:38| National Hurricane Center (Atlantic)
...PAULETTE CONTINUES TO GAIN STRENGTH OVER THE CENTRAL TROPICAL ATLANTIC... As of 11:00 AM AST Tue Sep 8 the center of Paulette was located near 18.4, -43.3 with movement NW at 6 mph. The minimum central pressure was 995 mb with maximum sustained winds of about 65 mph.
Tags: summary
storm
tropical
paulette
Sites : [779] [780] [781] [782] [783] [784] [785] [786] [787] [788] [789] [790] [791] [792] [793] [794] [795] [796] [797] [798] next »