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Tropical Storm Henri Wind Speed Probabilities Number 11

2021-08-18 16:35:19| National Hurricane Center (Atlantic)

Issued at 1500 UTC WED AUG 18 2021 000 FONT13 KNHC 181435 PWSAT3 TROPICAL STORM HENRI WIND SPEED PROBABILITIES NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082021 1500 UTC WED AUG 18 2021 AT 1500Z THE CENTER OF TROPICAL STORM HENRI WAS LOCATED NEAR LATITUDE 30.0 NORTH...LONGITUDE 66.6 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 WED 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 WED 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN PERIODS TO TO TO TO TO TO TO 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN 12Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT EDDY POINT NS 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) SYDNEY NS 34 X X( X) X( X) X( X) X( X) X( X) 4( 4) SABLE ISLAND 34 X X( X) X( X) X( X) X( X) X( X) 7( 7) HALIFAX NS 34 X X( X) X( X) X( X) X( X) 2( 2) 13(15) HALIFAX NS 50 X X( X) X( X) X( X) X( X) X( X) 5( 5) HALIFAX NS 64 X X( X) X( X) X( X) X( X) X( X) 1( 1) YARMOUTH NS 34 X X( X) X( X) X( X) X( X) 4( 4) 23(27) YARMOUTH NS 50 X X( X) X( X) X( X) X( X) 1( 1) 7( 8) YARMOUTH NS 64 X X( X) X( X) X( X) X( X) X( X) 4( 4) MONCTON NB 34 X X( X) X( X) X( X) X( X) X( X) 6( 6) ST JOHN NB 34 X X( X) X( X) X( X) X( X) 1( 1) 8( 9) EASTPORT ME 34 X X( X) X( X) X( X) X( X) 2( 2) 13(15) EASTPORT ME 50 X X( X) X( X) X( X) X( X) X( X) 3( 3) BAR HARBOR ME 34 X X( X) X( X) X( X) X( X) 1( 1) 8( 9) AUGUSTA ME 34 X X( X) X( X) X( X) X( X) 1( 1) 7( 8) PORTLAND ME 34 X X( X) X( X) X( X) X( X) 2( 2) 7( 9) CONCORD NH 34 X X( X) X( X) X( X) X( X) 2( 2) 6( 8) PORTSMOUTH NH 34 X X( X) X( X) X( X) X( X) 3( 3) 8(11) WORCESTER MA 34 X X( X) X( X) X( X) X( X) 4( 4) 7(11) WORCESTER MA 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) SPRINGFIELD MA 34 X X( X) X( X) X( X) X( X) 4( 4) 5( 9) BOSTON MA 34 X X( X) X( X) X( X) X( X) 4( 4) 9(13) BOSTON MA 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) HYANNIS MA 34 X X( X) X( X) X( X) X( X) 8( 8) 12(20) HYANNIS MA 50 X X( X) X( X) X( X) X( X) 1( 1) 5( 6) HYANNIS MA 64 X X( X) X( X) X( X) X( X) X( X) 1( 1) NANTUCKET MA 34 X X( X) X( X) X( X) X( X) 20(20) 18(38) NANTUCKET MA 50 X X( X) X( X) X( X) X( X) 6( 6) 9(15) NANTUCKET MA 64 X X( X) X( X) X( X) X( X) 2( 2) 5( 7) PROVIDENCE RI 34 X X( X) X( X) X( X) X( X) 13(13) 13(26) PROVIDENCE RI 50 X X( X) X( X) X( X) X( X) 2( 2) 5( 7) PROVIDENCE RI 64 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) BRIDGEPORT CT 34 X X( X) X( X) X( X) X( X) 5( 5) 4( 9) NEW HAVEN CT 34 X X( X) X( X) X( X) X( X) 5( 5) 5(10) HARTFORD CT 34 X X( X) X( X) X( X) X( X) 4( 4) 6(10) NEW LONDON CT 34 X X( X) X( X) X( X) X( X) 6( 6) 8(14) NEW LONDON CT 50 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) ALBANY NY 34 X X( X) X( X) X( X) X( X) 2( 2) 2( 4) POUGHKEEPSIE 34 X X( X) X( X) X( X) X( X) 2( 2) 3( 5) MONTAUK POINT 34 X X( X) X( X) X( X) X( X) 16(16) 11(27) MONTAUK POINT 50 X X( X) X( X) X( X) X( X) 3( 3) 4( 7) MONTAUK POINT 64 X X( X) X( X) X( X) X( X) 1( 1) 2( 3) ISLIP NY 34 X X( X) X( X) X( X) X( X) 6( 6) 4(10) NYC JFK AIRPRT 34 X X( X) X( X) X( X) X( X) 10(10) 6(16) NYC CNTRL PARK 34 X X( X) X( X) X( X) X( X) 4( 4) 3( 7) NEWARK NJ 34 X X( X) X( X) X( X) X( X) 4( 4) 2( 6) TRENTON NJ 34 X X( X) X( X) X( X) X( X) 3( 3) 2( 5) NWS EARLE NJ 34 X X( X) X( X) X( X) X( X) 5( 5) 2( 7) ALLENTOWN PA 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) PHILADELPHIA 34 X X( X) X( X) X( X) X( X) 3( 3) 2( 5) ATLANTIC CITY 34 X X( X) X( X) X( X) X( X) 6( 6) 1( 7) BALTIMORE MD 34 X X( X) X( X) X( X) X( X) 2( 2) 1( 3) DOVER DE 34 X X( X) X( X) X( X) X( X) 4( 4) 1( 5) ANNAPOLIS MD 34 X X( X) X( X) X( X) X( X) 3( 3) X( 3) CAPE HENLOPEN 34 X X( X) X( X) X( X) 1( 1) 10(11) 3(14) OCEAN CITY MD 34 X X( X) X( X) X( X) 2( 2) 11(13) 2(15) PAX RIVER NAS 34 X X( X) X( X) X( X) 1( 1) 2( 3) X( 3) WALLOPS CDA 34 X X( X) X( X) X( X) 3( 3) 8(11) 1(12) NORFOLK NAS 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) NORFOLK VA 34 X X( X) X( X) X( X) 1( 1) 3( 4) X( 4) OCEANA NAS VA 34 X X( X) X( X) X( X) 4( 4) 6(10) 1(11) ELIZABETH CTY 34 X X( X) X( X) X( X) 2( 2) 2( 4) 1( 5) CAPE HATTERAS 34 X X( X) X( X) 1( 1) 11(12) 5(17) 1(18) CHERRY PT NC 34 X X( X) X( X) X( X) 3( 3) 1( 4) X( 4) NEW RIVER NC 34 X X( X) X( X) 1( 1) 8( 9) 2(11) 1(12) MOREHEAD CITY 34 X X( X) X( X) 1( 1) 6( 7) 3(10) X(10) SURF CITY NC 34 X X( X) X( X) 1( 1) 3( 4) 2( 6) X( 6) BALD HEAD ISL 34 X X( X) X( X) 1( 1) 3( 4) 1( 5) X( 5) LITTLE RIVER 34 X X( X) X( X) X( X) 2( 2) 1( 3) X( 3) BERMUDA 34 X 1( 1) X( 1) X( 1) 2( 3) 3( 6) X( 6) $$ FORECASTER CANGIALOSI

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Tropical Storm Grace Graphics

2021-08-18 14:00:23| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Wed, 18 Aug 2021 12:00:23 GMT Wind Speed Probabilities last updated Wed, 18 Aug 2021 09:29:26 GMT

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Summary for Tropical Storm Grace (AT2/AL072021)

2021-08-18 13:59:22| National Hurricane Center (Atlantic)

...GRACE NEAR GRAND CAYMAN... ...HEAVY RAINS AND STRONG WINDS CONTINUING ACROSS THE CAYMAN ISLANDS... As of 8:00 AM EDT Wed Aug 18 the center of Grace was located near 19.1, -81.4 with movement WNW at 16 mph. The minimum central pressure was 993 mb with maximum sustained winds of about 65 mph.

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Tropical Storm Grace Public Advisory Number 20A

2021-08-18 13:59:22| National Hurricane Center (Atlantic)

Issued at 800 AM EDT Wed Aug 18 2021 000 WTNT32 KNHC 181159 TCPAT2 BULLETIN Tropical Storm Grace Intermediate Advisory Number 20A NWS National Hurricane Center Miami FL AL072021 800 AM EDT Wed Aug 18 2021 ...GRACE NEAR GRAND CAYMAN... ...HEAVY RAINS AND STRONG WINDS CONTINUING ACROSS THE CAYMAN ISLANDS... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...19.1N 81.4W ABOUT 20 MI...30 KM SW OF GRAND CAYMAN ABOUT 405 MI...650 KM ESE OF TULUM MEXICO MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.32 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Yucatan Peninsula of Mexico from Cancun to Punta Herrero, including Cozumel A Hurricane Watch is in effect for... * Cayman Islands A Tropical Storm Warning is in effect for... * Cayman Islands * Yucatan Peninsula of Mexico from north of Cancun to Campeche * Yucatan Peninsula of Mexico from south of Punta Herrero to Puerto Costa Maya A Tropical Storm Watch is in effect for... * Southern coast Cuban province of Pinar del Rio, as well as Isla de la Juventud A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm- force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in the Yucatan Peninsula of Mexico should monitor the progress of Grace. Additional watches or warnings may be required later this morning. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM EDT (1200 UTC), the center of Tropical Storm Grace was located by an Air Force Reserve Hurricane Hunter aircraft near latitude 18.8 North, longitude 80.9 West. Grace is moving toward the west-northwest near 16 mph (26 km/h). A general westward to west-northwestward motion is expected for the next several days. On the forecast track, the center of Grace will continue to move near or the Cayman Islands later this morning. Grace is expected to make landfall in the Yucatan peninsula of Mexico early Thursday, and move into the southwest Gulf of Mexico early Friday. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Grace is forecast to strengthen into a hurricane later today, with some additional strengthening possible prior to the center reaching the eastern Yucatan Peninsula. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. Wind gusts to hurricane force have been reported on Grand Cayman. The minimum central pressure estimated from Air Force Hurricane Hunter observations is 993 mb (29.32 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Grace can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. WIND: Tropical storm conditions are expected, and hurricane conditions are possible, over the Cayman Islands through this morning. Tropical storm conditions are possible along the southern coast of Cuba within the watch area through today. Hurricane conditions are expected within the warning area in the Yucatan Peninsula of Mexico late tonight, with tropical storm conditions beginning as early as this evening. RAINFALL: Grace is expected to produce the following rainfall amounts: Over Jamaica, the Cayman Islands, portions of the Yucatan Peninsula and Vera Cruz state....4 to 8 inches of rain with isolated maximum totals of 12 inches are expected through Friday night. This heavy rainfall could lead to flash and urban flooding, with mudslides possible in Jamaica. STORM SURGE: A storm surge could raise water levels as high as 1 to 3 ft above normal tide levels in portions of the Cayman Islands. A dangerous storm surge will raise water levels by as much as 3 to 5 ft above normal tide levels along the immediate coast near and to the north of where the center makes landfall in the northeastern Yucatan Peninsula late tonight or early Thursday. Near the coast, the surge will be accompanied by large and destructive waves. SURF: Swells generated by Grace will spread westward from Jamaica to the Cayman Islands, the southern coast of Cuba, and the Yucatan Peninsula of Mexico. 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 1100 AM EDT. $$ Forecaster Pasch

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Atlantic Tropical Weather Outlook

2021-08-18 13:29:19| National Hurricane Center (Atlantic)

000 ABNT20 KNHC 181129 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Wed Aug 18 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Grace, located near the Cayman Islands and on Tropical Storm Henri, located a couple of hundred miles south-southwest of Bermuda. The Weather Prediction Center is issuing advisories on Tropical Depression Fred, located inland over western Virginia. Tropical cyclone formation is not expected during the next 5 days. && Public advisories issued by the Weather Prediction Center on Tropical Depression Fred can be found under AWIPS header TCPAT1, WMO header WTNT31 KWNH, and on the web at http://www.wpc.ncep.noaa.gov $$ Forecaster Cangialosi

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