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Chantal |
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Posted: July 31, 2007 10:45 am
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000
WTNT33 KNHC 311431 TCPAT3 BULLETIN TROPICAL STORM CHANTAL ADVISORY NUMBER 3 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032007 1100 AM EDT TUE JUL 31 2007 ...CHANTAL STRENGTHENS...BUT HEADED FOR COOLER WATERS... AT 1100 AM EDT...1500Z...THE CENTER OF TROPICAL STORM CHANTAL WAS LOCATED NEAR LATITUDE 40.2 NORTH...LONGITUDE 62.7 WEST OR ABOUT 305 MILES...495 KM...SOUTH OF HALIFAX NOVA SCOTIA AND ABOUT 660 MILES... 1060 KM...SOUTHWEST OF CAPE RACE NEWFOUNDLAND. CHANTAL IS MOVING TOWARD THE NORTH-NORTHEAST NEAR 29 MPH...46 KM/HR ...AND THIS MOTION IS EXPECTED TO CONTINUE WITH SOME INCREASE IN FORWARD SPEED TODAY AND TONIGHT. MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 50 MPH...85 KM/HR...WITH HIGHER GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 24 HOURS AND CHANTAL COULD LOSE TROPICAL CHARACTERISTICS TONIGHT OR ON WEDNESDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM FROM THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 999 MB...29.50 INCHES. REPEATING THE 1100 AM EDT POSITION...40.2 N...62.7 W. MOVEMENT TOWARD...NORTH-NORTHEAST NEAR 29 MPH. MAXIMUM SUSTAINED WINDS...50 MPH. MINIMUM CENTRAL PRESSURE...999 MB. THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 500 PM EDT. $$ FORECASTER BLAKE ______________________________________________________________________ 000 WTNT43 KNHC 311432 TCDAT3 TROPICAL STORM CHANTAL DISCUSSION NUMBER 3 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032007 1100 AM EDT TUE JUL 31 2007 VISIBLE SATELLITE IMAGES INDICATE THAT CHANTAL HAS STRENGTHENED THIS MORNING WITH IMPRESSIVE CURVED BANDING ESPECIALLY IN THE NORTHERN SEMICIRCLE. THE LOW-LEVEL CENTER OF THE STORM APPEARS TO BE DISPLACED TO THE SOUTHEAST OF A CLEARLY IDENTIFIABLE MID-LEVEL CENTER ON SATELLITE. A QUIKSCAT PASS JUST BEFORE 1000 UTC SHOWED BELIEVABLE WIND VECTORS IN THE 40-45 KT RANGE AND THE INITIAL INTENSITY WILL BE SET TO 45 KT. THE TROPICAL CYCLONE IS QUICKLY MOVING INTO COOLER WATERS AND LITTLE ADDITIONAL INTENSIFICATION AS A TROPICAL CYCLONE IS EXPECTED. GLOBAL COMPUTER MODELS SUGGEST THAT CHANTAL WILL BECOME THE MAIN PART OF A LARGE POWERFUL LOW OVER THE NORTHERN ATLANTIC OCEAN AND A LITTLE ADDITIONAL BAROCLINIC STRENGTHENING IS SHOWN IN A COUPLE DAYS. THE STORM IS MOVING RAPIDLY NORTHEASTWARD AT ABOUT 25 KT. THIS GENERAL MOTION...WITH SOME ACCELERATION...IS EXPECTED FOR THE NEXT DAY OR TWO AS CHANTAL IS STEERED BY A DEEPENING MIDDLE-LATITUDE TROUGH OVER NORTHEASTERN CANADA. THE TRACK GUIDANCE IS IN GOOD AGREEMENT ON THIS SCENARIO AND THE OFFICIAL FORECAST IS BASICALLY AN UPDATE OF THE PREVIOUS FORECAST. FORECAST POSITIONS AND MAX WINDS INITIAL 31/1500Z 40.2N 62.7W 45 KT 12HR VT 01/0000Z 43.0N 59.7W 45 KT 24HR VT 01/1200Z 47.0N 52.7W 45 KT...EXTRATROPICAL 36HR VT 02/0000Z 51.2N 44.7W 50 KT...EXTRATROPICAL 48HR VT 02/1200Z 56.0N 36.0W 50 KT...EXTRATROPICAL 72HR VT 03/1200Z 60.0N 27.5W 50 KT...EXTRATROPICAL 96HR VT 04/1200Z 62.0N 20.0W 45 KT...EXTRATROPICAL 120HR VT 05/1200Z 64.5N 12.5W 40 KT...EXTRATROPICAL $$ FORECASTER BLAKE |
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Posted: July 31, 2007 11:49 pm
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The Current Advisory from the NHC
...Chantal rapidly becoming extratropical... at 1100 PM EDT...0300z...the center of Tropical Storm Chantal was located near latitude 43.6 north...longitude 58.5 west or about 260 miles...420 km...east-southeast of Halifax Nova Scotia and about 340 miles...545 km...southwest of Cape Race Newfoundland. Chantal is moving toward the northeast near 32 mph...52 km/hr...and this motion is expected to continue with some increase in forward speed during the next 24 hours. Maximum sustained winds are near 50 mph...85 km/hr...with higher gusts. Chantal is expected to become a strong extratropical storm. Tropical storm force winds extend outward up to 200 miles...325 km from the center. Estimated minimum central pressure is 994 mb...29.35 inches. Repeating the 1100 PM EDT position...43.6 N...58.5 W. Movement toward...northeast near 32 mph. Maximum sustained winds...50 mph. Minimum central pressure...994 mb. This is the last public advisory issued by the National Hurricane Center on Chantal. Additional information on this system can be found in high seas forecasts issued by the National Weather Service...under AWIPS header nfdhsfat1 and WMO header fznt01 kwbc. $$ Forecaster Brown |
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Posted: August 01, 2007 09:12 am
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Chantal Has died I am closing this topic
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