je.st
news
Tag: helene
Tropical Storm Helene Public Advisory Number 32A
2018-09-15 13:36:35| National Hurricane Center (Atlantic)
Issued at 800 AM AST Sat Sep 15 2018 899 WTNT33 KNHC 151136 TCPAT3 BULLETIN Tropical Storm Helene Intermediate Advisory Number 32A NWS National Hurricane Center Miami FL AL082018 800 AM AST Sat Sep 15 2018 ...HELENE CONTINUES TO APPROACH THE AZORES... ...EXPECTED TO PRODUCE TROPICAL-STORM-FORCE WINDS AND HEAVY RAINS... SUMMARY OF 800 AM AST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...38.5N 34.4W ABOUT 185 MI...300 KM WSW OF FLORES IN THE AZORES MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNE OR 25 DEGREES AT 22 MPH...35 KM/H MINIMUM CENTRAL PRESSURE...988 MB...29.18 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * All of the Azores Islands A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area, in this case within 12 to 24 hours. Interests in Ireland and the United Kingdom should consult products from their local meteorological service for information about potential impacts from Helene in those locations. Local forecasts and warnings for the UK can be found on the website of the UK Met Office at https://www.metoffice.gov.uk/ . Local forecasts and warnings for Ireland can be found on the website of Met Eireann at https://www.met.ie/ . DISCUSSION AND OUTLOOK ---------------------- At 800 AM AST (1200 UTC), the center of Tropical Storm Helene was located near latitude 38.5 North, longitude 34.4 West. Helene is moving toward the north-northeast near 22 mph (35 km/h). A turn toward the northeast is expected by tonight. On the forecast track, Helene will be passing near or over the Azores tonight or on Sunday. Maximum sustained winds remain near 70 mph (110 km/h) with higher gusts. Little change in strength is forecast today, but gradual weakening is expected later in the weekend. Helene is expected to transition to an extratropical cyclone as it approaches Ireland and the United Kingdom in a couple of days. Tropical-storm-force winds extend outward up to 160 miles (260 km) from the center. The estimated minimum central pressure is 988 mb (29.18 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are expected within portions of the warning area later today and tonight. RAINFALL: Helene is expected to produce total rainfall amounts 1 to 3 inches across the western Azores, with isolated amounts up to 4 inches possible. Rainfall amounts of 1 to 2 inches are expected across western Ireland and Scotland. SURF: Swells generated by Helene are affecting portions of the Azores. These swells are likely to continue for another couple of days and could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Beven
Tags: number
public
storm
advisory
Tropical Storm Helene Graphics
2018-09-15 10:44:35| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sat, 15 Sep 2018 08:44:35 GMT Wind Speed Probabilities last updated Sat, 15 Sep 2018 08:44:36 GMT
Tags: graphics
storm
tropical
tropical storm
Tropical Storm Helene Forecast Discussion Number 32
2018-09-15 10:42:02| National Hurricane Center (Atlantic)
Issued at 500 AM AST Sat Sep 15 2018 247 WTNT43 KNHC 150841 TCDAT3 Tropical Storm Helene Discussion Number 32 NWS National Hurricane Center Miami FL AL082018 500 AM AST Sat Sep 15 2018 Helene appears to be maintaining its strength. Recent microwave images show that the storm has an eye feature, but the vortex is significantly tilted in the vertical due to southwesterly shear. Deep convection is most organized in bands to the north and west of the center. Based on the tropical storm's appearance in microwave images, the initial intensity is again held at 60 kt, near the high end of the satellite intensity estimates. Helene is expected to gradually weaken during the next few days due to the influences of southwesterly shear, drier air, and much cooler SSTs along the forecast track. These conditions should also cause Helene to lose tropical characteristics, and the storm is forecast become extratropical in 24 to 36 hours. The tropical storm is moving north-northeastward at a fairly fast pace, 19 kt. The center of Helene is expected to pass to the west of the Azores by tonight. However, Helene has a fairly large wind field, and tropical-storm-force winds are expected across the western Azores as the storm passes by. A shortwave trough to the northwest of the system is expected to approach Helene by tonight, and that should cause the cyclone to turn northeastward and then speed up in that direction as it heads toward Ireland and the United Kingdom late this weekend and early next week. The models are in fair agreement, and only small changes were made to the previous NHC track forecast. Helene is expected to be a post-tropical cyclone when it approaches Ireland and the United Kingdom in two to three days. Interests in those locations should consult products from their local meteorological service for information about potential impacts from Helene. Local forecasts and warnings for the UK can be found on the website of the UK Met Office at https://www.metoffice.gov.uk/. Local forecasts and warnings for Ireland can be found on the website of Met Eireann at https://www.met.ie/. FORECAST POSITIONS AND MAX WINDS INIT 15/0900Z 37.7N 34.8W 60 KT 70 MPH 12H 15/1800Z 39.7N 32.7W 60 KT 70 MPH 24H 16/0600Z 41.8N 29.2W 55 KT 65 MPH 36H 16/1800Z 44.1N 24.3W 55 KT 65 MPH...POST-TROP/EXTRATROP 48H 17/0600Z 46.7N 18.1W 55 KT 65 MPH...POST-TROP/EXTRATROP 72H 18/0600Z 55.8N 5.0W 50 KT 60 MPH...POST-TROP/EXTRATROP 96H 19/0600Z...DISSIPATED $$ Forecaster Cangialosi
Tags: number
discussion
storm
tropical
Tropical Storm Helene Wind Speed Probabilities Number 32
2018-09-15 10:41:03| National Hurricane Center (Atlantic)
Issued at 0900 UTC SAT SEP 15 2018 564 FONT13 KNHC 150840 PWSAT3 TROPICAL STORM HELENE WIND SPEED PROBABILITIES NUMBER 32 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082018 0900 UTC SAT SEP 15 2018 AT 0900Z THE CENTER OF TROPICAL STORM HELENE WAS LOCATED NEAR LATITUDE 37.7 NORTH...LONGITUDE 34.8 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 60 KTS...70 MPH...110 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 06Z 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 06Z SAT 18Z SAT 06Z SUN 18Z SUN 06Z MON 06Z TUE 06Z WED PERIODS TO TO TO TO TO TO TO 18Z SAT 06Z SUN 18Z SUN 06Z MON 06Z TUE 06Z WED 06Z THU FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT SANTA CRUZ AZO 34 93 4(97) X(97) X(97) X(97) X(97) X(97) SANTA CRUZ AZO 50 8 18(26) X(26) X(26) X(26) X(26) X(26) SANTA CRUZ AZO 64 X 2( 2) X( 2) X( 2) X( 2) X( 2) X( 2) PONTA DELGADA 34 X 4( 4) 1( 5) X( 5) X( 5) X( 5) X( 5) $$ FORECASTER CANGIALOSI
Summary for Tropical Storm Helene (AT3/AL082018)
2018-09-15 10:41:02| National Hurricane Center (Atlantic)
...HELENE APPROACHING THE AZORES... ...EXPECTED TO PRODUCE TROPICAL-STORM-FORCE WINDS AND HEAVY RAINS... As of 5:00 AM AST Sat Sep 15 the center of Helene was located near 37.7, -34.8 with movement NNE at 22 mph. The minimum central pressure was 988 mb with maximum sustained winds of about 70 mph.
Tags: summary
storm
tropical
tropical storm
Sites : [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] next »