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Summary for Hurricane Larry (AT2/AL122021)
2021-09-09 16:54:06| National Hurricane Center (Atlantic)
...TROPICAL STORM CONDITIONS EXPECTED ON BERMUDA SOON WHILE LARRY MOVES TO THE EAST OF THE ISLAND... As of 11:00 AM AST Thu Sep 9 the center of Larry was located near 32.0, -61.6 with movement NNW at 16 mph. The minimum central pressure was 966 mb with maximum sustained winds of about 90 mph.
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Hurricane Larry Public Advisory Number 36
2021-09-09 16:54:06| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Thu Sep 09 2021 419 WTNT32 KNHC 091454 TCPAT2 BULLETIN Hurricane Larry Advisory Number 36 NWS National Hurricane Center Miami FL AL122021 1100 AM AST Thu Sep 09 2021 ...TROPICAL STORM CONDITIONS EXPECTED ON BERMUDA SOON WHILE LARRY MOVES TO THE EAST OF THE ISLAND... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...32.0N 61.6W ABOUT 190 MI...305 KM E OF BERMUDA MAXIMUM SUSTAINED WINDS...90 MPH...150 KM/H PRESENT MOVEMENT...NNW OR 340 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...966 MB...28.53 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Southeastern Newfoundland from St. Schotts to Pouch Cove A Tropical Storm Warning is in effect for... * Bermuda A Tropical Storm Watch is in effect for... * Southeastern Newfoundland from Lamaline to west of St. Schotts * Southeastern Newfoundland from north of Pouch Cove to Bonavista A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in southeastern Newfoundland should monitor the progress of this system. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Hurricane Larry was located near latitude 32.0 North, longitude 61.6 West. Larry is moving toward the north-northwest near 16 mph (26 km/h), and a turn toward the north with an increase in forward speed is forecast today, with a faster northeastward motion expected by Friday. On the forecast track, the center of Larry will pass east of Bermuda today, and move near or over southeastern Newfoundland Friday night or early Saturday morning. Maximum sustained winds are near 90 mph (150 km/h) with higher gusts. Gradual weakening is forecast during the next couple of days, but Larry is expected to remain a hurricane during that time. Larry should become an extratropical cyclone early Saturday, after passing by Newfoundland, then weaken further while it passes southeast of Greenland Sunday night. Larry is expected to be absorbed by a larger extratropical low east of Greenland by Monday. Larry is a large hurricane. Hurricane-force winds extend outward up to 90 miles (150 km) from the center and tropical-storm-force winds extend outward up to 220 miles (350 km). The estimated minimum central pressure is 966 mb (28.53 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Larry can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC and on the web at hurricanes.gov/graphics_at2.shtml?key_messages WIND: Tropical storm conditions are expected on Bermuda today. Hurricane conditions are possible within the hurricane watch area in southeastern Newfoundland Friday night, with tropical storm conditions possible by late Friday. Tropical storm conditions are possible in the tropical storm watch area in southeastern Newfoundland by late Friday. SURF: Swells generated by Larry will continue to affect the Leeward Islands, portions of the Greater Antilles, the Bahamas, and Bermuda through the end of the week. Significant swells from Larry will continue affecting the east coast of the United States and Atlantic Canada through the end of the week. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. RAINFALL: Outer rain bands from Hurricane Larry may periodically impact Bermuda today. Significant rainfall totals are currently not expected, however brief heavy rain from these bands may result in an inch or two of rain through Thursday. Heavy rains from Larry will move quickly across eastern Newfoundland Friday night, producing 1 to 2 inches of rain. NEXT ADVISORY ------------- Next intermediate advisory at 200 PM AST. Next complete advisory at 500 PM AST. $$ Forecaster Pasch
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Hurricane Larry Forecast Advisory Number 36
2021-09-09 16:54:06| National Hurricane Center (Atlantic)
Issued at 1500 UTC THU SEP 09 2021 420 WTNT22 KNHC 091454 TCMAT2 HURRICANE LARRY FORECAST/ADVISORY NUMBER 36 NWS NATIONAL HURRICANE CENTER MIAMI FL AL122021 1500 UTC THU SEP 09 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WATCH IS IN EFFECT FOR... * SOUTHEASTERN NEWFOUNDLAND FROM ST. SCHOTTS TO POUCH COVE A TROPICAL STORM WARNING IS IN EFFECT FOR... * BERMUDA A TROPICAL STORM WATCH IS IN EFFECT FOR... * SOUTHEASTERN NEWFOUNDLAND FROM LAMALINE TO WEST OF ST. SCHOTTS * SOUTHEASTERN NEWFOUNDLAND FROM NORTH OF POUCH COVE TO BONAVISTA A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. INTERESTS ELSEWHERE IN SOUTHEASTERN NEWFOUNDLAND SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. HURRICANE CENTER LOCATED NEAR 32.0N 61.6W AT 09/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT 14 KT ESTIMATED MINIMUM CENTRAL PRESSURE 966 MB MAX SUSTAINED WINDS 80 KT WITH GUSTS TO 100 KT. 64 KT....... 80NE 60SE 30SW 50NW. 50 KT.......110NE 110SE 70SW 90NW. 34 KT.......190NE 190SE 140SW 140NW. 12 FT SEAS..400NE 320SE 270SW 270NW. 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 32.0N 61.6W AT 09/1500Z AT 09/1200Z CENTER WAS LOCATED NEAR 31.3N 61.5W FORECAST VALID 10/0000Z 34.5N 62.2W MAX WIND 80 KT...GUSTS 100 KT. 64 KT... 80NE 60SE 30SW 50NW. 50 KT...110NE 110SE 70SW 90NW. 34 KT...190NE 190SE 140SW 140NW. FORECAST VALID 10/1200Z 39.0N 60.8W MAX WIND 80 KT...GUSTS 100 KT. 64 KT... 70NE 50SE 40SW 50NW. 50 KT...110NE 110SE 70SW 80NW. 34 KT...190NE 190SE 150SW 130NW. FORECAST VALID 11/0000Z 44.8N 56.1W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 60NE 70SE 50SW 40NW. 50 KT...110NE 120SE 90SW 70NW. 34 KT...200NE 210SE 160SW 110NW. FORECAST VALID 11/1200Z 51.3N 49.1W...POST-TROP/EXTRATROP MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 50NE 70SE 40SW 30NW. 50 KT...110NE 120SE 100SW 70NW. 34 KT...200NE 230SE 210SW 110NW. FORECAST VALID 12/0000Z 57.0N 43.5W...POST-TROP/EXTRATROP MAX WIND 60 KT...GUSTS 75 KT. 50 KT...150NE 120SE 100SW 70NW. 34 KT...250NE 250SE 220SW 110NW. FORECAST VALID 12/1200Z 61.0N 40.0W...POST-TROP/EXTRATROP MAX WIND 55 KT...GUSTS 65 KT. 50 KT...150NE 140SE 100SW 70NW. 34 KT...320NE 270SE 250SW 200NW. 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 13/1200Z...ABSORBED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 32.0N 61.6W INTERMEDIATE PUBLIC ADVISORY...WTNT32 KNHC/MIATCPAT2...AT 09/1800Z NEXT ADVISORY AT 09/2100Z $$ FORECASTER PASCH
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Hurricane Olaf Graphics
2021-09-09 16:51:49| National Hurricane Center (East Pacific)
5-Day Uncertainty Track last updated Thu, 09 Sep 2021 14:51:49 GMT Wind Speed Probabilities last updated Thu, 09 Sep 2021 14:51:50 GMT
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Hurricane Olaf Forecast Discussion Number 8
2021-09-09 16:51:10| National Hurricane Center (East Pacific)
Issued at 900 AM MDT Thu Sep 09 2021 000 WTPZ45 KNHC 091451 TCDEP5 Hurricane Olaf Discussion Number 8 NWS National Hurricane Center Miami FL EP152021 900 AM MDT Thu Sep 09 2021 Recent microwave imagery shows that Olaf's structure has improved considerably during the past 6 hours, and it now has well-defined eye. The eye is also now evident in radar imagery from Cabo San Lucas. Although an eye is not yet evident in infrared or visible imagery, satellite intensity estimates had increased and supported an intensity of 60-65 kt at 1200 UTC. Given the continued impressive satellite appearance since then, the estimated intensity is 65 kt for this advisory, making Olaf a hurricane. Olaf has a microwave ring structure that is known to indicate intensification in the short term. The wind shear that previously affected the hurricane seems to have lessened and the environment should also support further strengthening today. The hurricane is therefore forecast to quickly intensify during the next 12 h or so while it approaches the southern tip of the Baja California peninsula. After that, interaction with land and cold sea surface temperatures should cause the cyclone to quickly weaken over the weekend. Olaf is forecast to become post-tropical in about 60 h as it moves farther away from land. The NHC intensity forecast is above the previous advisory, and is above most of the guidance through 24 h. Beyond that, there have been only slight adjustments to the official intensity forecast, which is based on the multi- model consensus. The track forecast has shifted closer to the southern Baja California peninsula. In line with the intensity forecast, the NHC forecast now slightly favors the stronger GFS and regional hurricane models, compared to the weaker ECMWF, but is still near the HCCA and TVCN consensus aids. Olaf is moving north-northeast but should turn northwestward later today, steered by a mid-level ridge centered over the western United States. The models with a stronger hurricane show Olaf turning slightly slower, and bring the center very near or even over Baja California Sur tonight. As Olaf weakens it should begin to be steered by lower-level flow, which will cause it to eventually turn westward and then southwestward as it moves away from land early next week. Key Messages: 1. Olaf is forecast to pass very near or over the southern portion of Baja California Sur tonight and Friday, and hurricane conditions are likely within the hurricane warning area tonight. Tropical storm conditions are expected to begin within the hurricane warning area this afternoon, and preparations should be rushed to completion. 2. Heavy rains associated with Olaf are expected across portions of southern Baja California Sur through Friday. This will pose a threat of significant and life-threatening flash flooding and mudslides. FORECAST POSITIONS AND MAX WINDS INIT 09/1500Z 21.2N 108.3W 65 KT 75 MPH 12H 10/0000Z 22.2N 109.2W 75 KT 85 MPH 24H 10/1200Z 23.3N 110.7W 65 KT 75 MPH 36H 11/0000Z 24.0N 112.1W 60 KT 70 MPH 48H 11/1200Z 24.1N 113.5W 45 KT 50 MPH 60H 12/0000Z 23.8N 114.7W 35 KT 40 MPH...POST-TROPICAL 72H 12/1200Z 23.2N 116.0W 30 KT 35 MPH...POST-TROP/REMNT LOW 96H 13/1200Z 21.5N 119.0W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 14/1200Z 21.0N 122.0W 20 KT 25 MPH...POST-TROP/REMNT LOW $$ Forecaster D. Zelinsky
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