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Tropical Storm Helene Public Advisory Number 32
2018-09-15 10:41:02| National Hurricane Center (Atlantic)
Issued at 500 AM AST Sat Sep 15 2018 551 WTNT33 KNHC 150840 TCPAT3 BULLETIN Tropical Storm Helene Advisory Number 32 NWS National Hurricane Center Miami FL AL082018 500 AM AST Sat Sep 15 2018 ...HELENE APPROACHING THE AZORES... ...EXPECTED TO PRODUCE TROPICAL-STORM-FORCE WINDS AND HEAVY RAINS... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...37.7N 34.8W ABOUT 425 MI...685 KM W OF LAJES AIR BASE IN THE AZORES MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNE OR 20 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 500 AM AST (0900 UTC), the center of Tropical Storm Helene was located near latitude 37.7 North, longitude 34.8 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 during the next 12 hours, 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 intermediate advisory at 800 AM AST. Next complete advisory at 1100 AM AST. $$ Forecaster Cangialosi
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Tropical Storm Helene Forecast Advisory Number 32
2018-09-15 10:40:34| National Hurricane Center (Atlantic)
Issued at 0900 UTC SAT SEP 15 2018 483 WTNT23 KNHC 150840 TCMAT3 TROPICAL STORM HELENE FORECAST/ADVISORY NUMBER 32 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082018 0900 UTC SAT SEP 15 2018 CHANGES IN WATCHES AND WARNINGS 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/. TROPICAL STORM CENTER LOCATED NEAR 37.7N 34.8W AT 15/0900Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 20 DEGREES AT 19 KT ESTIMATED MINIMUM CENTRAL PRESSURE 988 MB MAX SUSTAINED WINDS 60 KT WITH GUSTS TO 75 KT. 50 KT....... 50NE 50SE 0SW 0NW. 34 KT.......140NE 140SE 70SW 120NW. 12 FT SEAS..240NE 240SE 240SW 180NW. 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 37.7N 34.8W AT 15/0900Z AT 15/0600Z CENTER WAS LOCATED NEAR 36.9N 35.6W FORECAST VALID 15/1800Z 39.7N 32.7W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 50NE 60SE 20SW 20NW. 34 KT...120NE 150SE 80SW 120NW. FORECAST VALID 16/0600Z 41.8N 29.2W MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 50NE 50SE 40SW 30NW. 34 KT...120NE 150SE 120SW 120NW. FORECAST VALID 16/1800Z 44.1N 24.3W...POST-TROP/EXTRATROP MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 60SE 60SW 30NW. 34 KT...130NE 160SE 150SW 120NW. FORECAST VALID 17/0600Z 46.7N 18.1W...POST-TROP/EXTRATROP MAX WIND 55 KT...GUSTS 65 KT. 50 KT... 30NE 60SE 60SW 0NW. 34 KT...140NE 160SE 160SW 120NW. FORECAST VALID 18/0600Z 55.8N 5.0W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 40SE 0SW 0NW. 34 KT...140NE 180SE 180SW 80NW. 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 19/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 37.7N 34.8W NEXT ADVISORY AT 15/1500Z $$ FORECASTER CANGIALOSI
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Tropical Storm Helene Graphics
2018-09-15 07:31:15| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Sat, 15 Sep 2018 05:31:15 GMT Wind Speed Probabilities last updated Sat, 15 Sep 2018 03:28:29 GMT
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Summary for Tropical Storm Helene (AT3/AL082018)
2018-09-15 07:31:03| National Hurricane Center (Atlantic)
...HELENE EXPECTED TO PRODUCE TROPICAL STORM FORCE WINDS AND HEAVY RAINS IN THE AZORES LATER TODAY... As of 2:00 AM AST Sat Sep 15 the center of Helene was located near 36.6, -35.4 with movement NNE at 18 mph. The minimum central pressure was 988 mb with maximum sustained winds of about 70 mph.
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Tropical Storm Helene Public Advisory Number 31A
2018-09-15 07:31:03| National Hurricane Center (Atlantic)
Issued at 200 AM AST Sat Sep 15 2018 666 WTNT33 KNHC 150530 TCPAT3 BULLETIN Tropical Storm Helene Intermediate Advisory Number 31A NWS National Hurricane Center Miami FL AL082018 200 AM AST Sat Sep 15 2018 ...HELENE EXPECTED TO PRODUCE TROPICAL STORM FORCE WINDS AND HEAVY RAINS IN THE AZORES LATER TODAY... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...36.6N 35.4W ABOUT 480 MI...775 KM WSW OF LAJES AIR BASE IN THE AZORES MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NNE OR 30 DEGREES AT 18 MPH...30 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 200 AM AST (0600 UTC), the center of Tropical Storm Helene was located near latitude 36.6 North, longitude 35.4 West. Helene is moving toward the north-northeast near 18 mph (30 km/h). A turn toward the northeast is expected by tonight or Sunday morning. 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 during the next 12 hours, 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) mainly to the east of the center. The estimated minimum central pressure is 988 mb (29.18 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are expected within the warning area later today and tonight. RAINFALL: Helene is expected to produce total rainfall amounts of 2 to 4 inches across the Azores, with isolated amounts up to 8 inches across the western Azores. This rainfall may cause life-threatening flash flooding. SURF: Swells generated by Helene are affecting portions of the Azores. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 500 AM AST. $$ Forecaster Cangialosi
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