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Tropical Depression Six Graphics
2018-09-01 04:46:58| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sat, 01 Sep 2018 02:46:58 GMT Wind Speed Probabilities last updated Sat, 01 Sep 2018 03:22:06 GMT
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Tropical Depression Six Forecast Discussion Number 7
2018-09-01 04:41:05| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Fri Aug 31 2018 503 WTNT41 KNHC 010241 TCDAT1 Tropical Depression Six Discussion Number 7 NWS National Hurricane Center Miami FL AL062018 1100 PM AST Fri Aug 31 2018 Convection associated with the depression is becoming more concentrated, although the center still appears to be near the eastern edge of the convective mass. The latest satellite intensity estimates from TAFB and SAB are 30 and 25 kt repsectively, while the CIMSS satellite consensus method suggests the cyclone has become a tropical storm. Based on the available data, the initial intensity remains a possibly conservative 30 kt. The depression is feeling the effects of moderate easterly vertical wind shear, with little or no cirrus outflow in the eastern semicircle. The initial motion is now 285/12. Deep layer easterly or east- southeasterly flow on the south side of the subtropical ridge should steer the cyclone generally west-northwestward across the open Atlantic ocean for the next 3-4 days. After that time, the cyclone is expected to turn northwestward toward a weakness in the subtropical ridge. The track guidance remains in good agreement with this scenario, although there remains some spread on how sharp the turn will be near the end of the forecast period. The new forecast track, which is an update of the previous forecast, is near the various consensus models. While the current shear is expected to subside during the next day or so, the forecast track takes the cyclone over waters that cool to near 26C in about 48 h. The intensity forecast thus calls for only gradual intensification through this time. After 48-72 h, the system should move over warmer water, but also should encounter increasing westerly shear. The intensity guidance responds to this combination of ingredients by showing little change in strength. The new intensity forecast, which is unchanged from the previous forecast, is in the stronger portion of the inetnsity guidance and above the forecasts of the consensus models. FORECAST POSITIONS AND MAX WINDS INIT 01/0300Z 14.2N 25.5W 30 KT 35 MPH 12H 01/1200Z 14.7N 27.4W 35 KT 40 MPH 24H 02/0000Z 15.5N 29.9W 40 KT 45 MPH 36H 02/1200Z 16.3N 32.6W 45 KT 50 MPH 48H 03/0000Z 17.0N 35.2W 50 KT 60 MPH 72H 04/0000Z 18.5N 40.0W 55 KT 65 MPH 96H 05/0000Z 20.5N 44.5W 60 KT 70 MPH 120H 06/0000Z 23.0N 47.5W 55 KT 65 MPH $$ Forecaster Beven
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Summary for Tropical Depression Six (AT1/AL062018)
2018-09-01 04:40:35| National Hurricane Center (Atlantic)
...TROPICAL DEPRESSION NOW WEST-SOUTHWEST OF THE SOUTHERN CABO VERDE ISLANDS... ...RAINBANDS AND GUSTY WINDS CONTINUING TO AFFECT THOSE ISLANDS... As of 11:00 PM AST Fri Aug 31 the center of Six was located near 14.2, -25.5 with movement WNW at 14 mph. The minimum central pressure was 1004 mb with maximum sustained winds of about 35 mph.
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Tropical Depression Six Public Advisory Number 7
2018-09-01 04:40:35| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Fri Aug 31 2018 007 WTNT31 KNHC 010240 TCPAT1 BULLETIN Tropical Depression Six Advisory Number 7 NWS National Hurricane Center Miami FL AL062018 1100 PM AST Fri Aug 31 2018 ...TROPICAL DEPRESSION NOW WEST-SOUTHWEST OF THE SOUTHERN CABO VERDE ISLANDS... ...RAINBANDS AND GUSTY WINDS CONTINUING TO AFFECT THOSE ISLANDS... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...14.2N 25.5W ABOUT 85 MI...135 KM WSW OF THE SOUTHERNMOST CABO VERDE ISLANDS MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Cabo Verde Islands of Santiago, Fogo, and Brava A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within the next 6 to 12 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Tropical Depression Six was located near latitude 14.2 North, longitude 25.5 West. The depression is moving toward the west-northwest near 14 mph (22 km/h), and this general motion is expected to continue for the next several days. On the forecast track, the depression will be passing just to the west-southwest of the Cabo Verde Islands tonight and Saturday morning. The depression should then be moving over the open eastern Atlantic on Sunday and Monday. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Strengthening is forecast, and the depression is expected to become a tropical storm on Saturday. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: The system could produce an additional 1 to 2 inches of rain across the southern Cabo Verde Islands through Saturday. WINDS: Tropical storm conditions are expected to continue in the southern Cabo Verde Islands tonight. Winds should subside on Saturday. NEXT ADVISORY ------------- Next intermediate advisory at 200 AM AST. Next complete advisory at 500 AM AST. $$ Forecaster Beven
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Tropical Depression Six Wind Speed Probabilities Number 7
2018-09-01 04:40:35| National Hurricane Center (Atlantic)
Issued at 0300 UTC SAT SEP 01 2018 021 FONT11 KNHC 010240 PWSAT1 TROPICAL DEPRESSION SIX WIND SPEED PROBABILITIES NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL AL062018 0300 UTC SAT SEP 01 2018 AT 0300Z THE CENTER OF TROPICAL DEPRESSION SIX WAS LOCATED NEAR LATITUDE 14.2 NORTH...LONGITUDE 25.5 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 SAT 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 SAT 12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED PERIODS TO TO TO TO TO TO TO 12Z SAT 00Z SUN 12Z SUN 00Z MON 00Z TUE 00Z WED 00Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER BEVEN
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