TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2205 UTC SUN JUL 20 2008
A 1007 MB LOW IS LOCATED NEAR 12N96W OR ABOUT 200 NM S OF PUERTO ANGEL MEXICO...MOVING W 12 KT. THE LOW IS ASSOCIATED WITH A TROPICAL WAVE EXTENDING S FROM S/CENTRAL MEXICO TO NEAR 08N ALONG 96W. THE LOW LIES ON THE EDGE OF AN AREA CHARACTERIZED BY STRONG NE/EASTERLY SHEAR...WHICH IS JUST ENOUGH TO PUSH MOST OF THE DEEP CONVECTION OVER THE WESTERN SEMICIRCLE OF THE CIRCULATION. SHIP LAOX5 RECENTLY REPORTED WINDS TO 33 KT ABOUT 165 NM NNW OF THE CENTER OF THE LOW...INDICATING THAT THE CIRCULATION IS BECOMING MORE VIGOROUS. SCATTERED MODERATE/STRONG CONVECTION IS WITHIN 360 NM W AND NW QUADRANTS AND WITHIN 180 NM NE QUADRANT. TROPICAL CYCLONE FORMATION IS POSSIBLE WITHIN THE NEXT 48 HOURS AS THE SYSTEM MOVES GENERALLY W OR WNW OFF THE COAST OF SOUTHERN MEXICO...ESPECIALLY IF THE DEEP CONVECTION CAN BECOME MORE ORGANIZED NEAR THE LOW-LEVEL CENTER.
SHOWERS AND THUNDERSTORMS ARE ASSOCIATED WITH AN AREA OF LOW PRESSURE CENTERED ABOUT 260 MILES SOUTH-SOUTHWEST OF PUERTO ANGEL MEXICO. THE ORGANIZATION OF THIS SYSTEM HAS CHANGED VERY LITTLE THIS AFTERNOON...HOWEVER THE ENVIRONMENTAL CONDITIONS ARE EXPECTED TO GRADUALLY BECOME MORE FAVORABLE FOR DEVELOPMENT. THE SYSTEM COULD BECOME A TROPICAL DEPRESSION AT ANY TIME DURING THE NEXT DAY OR TWO AS IT MOVES WESTWARD AT ABOUT 15 MPH.
SHOWERS AND THUNDERSTORMS ARE ASSOCIATED WITH AN AREA OF LOW PRESSURE CENTERED ABOUT 270 MILES SOUTH-SOUTHWEST OF PUERTO ANGEL MEXICO. THE ORGANIZATION OF THIS SYSTEM HAS CHANGED VERY LITTLE THIS EVENING...HOWEVER THE ENVIRONMENTAL CONDITIONS ARE EXPECTED TO GRADUALLY BECOME MORE FAVORABLE FOR DEVELOPMENT. THE SYSTEM COULD BECOME A TROPICAL DEPRESSION AT ANY TIME DURING THE NEXT DAY OR TWO AS IT MOVES WESTWARD AT ABOUT 15 MPH.
SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN AREA OF LOW PRESSURE CENTERED ABOUT 325 MILES SOUTH OF ZIHUATANEJO MEXICO HAVE INCREASED IN ORGANIZATION OVERNIGHT. THIS SYSTEM IS LIKELY TO BECOME A TROPICAL DEPRESSION WITHIN THE NEXT DAY OR SO AS IT MOVES WESTWARD AT ABOUT 15 MPH.
321 ABPZ20 KNHC 211155 TWOEP TROPICAL WEATHER OUTLOOK NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 500 AM PDT MON JUL 21 2008
FOR THE EASTERN NORTH PACIFIC...EAST OF 140 DEGREES WEST LONGITUDE..
THE NATIONAL HURRICANE CENTER IS ISSUING ADVISORIES ON HURRICANE FAUSTO...LOCATED ABOUT 405 MILES WEST-SOUTHWEST OF CABO SAN LUCAS MEXICO.
SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN AREA OF LOW PRESSURE CENTERED ABOUT 325 MILES SOUTH OF ZIHUATANEJO MEXICO HAVE INCREASED IN ORGANIZATION OVERNIGHT. THIS SYSTEM IS LIKELY TO BECOME A TROPICAL DEPRESSION WITHIN THE NEXT DAY OR SO AS IT MOVES WESTWARD AT ABOUT 15 MPH.
ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE NEXT 48 HOURS.
WTPZ43 KNHC 211458 TCDEP3 TROPICAL DEPRESSION EIGHT-E DISCUSSION NUMBER 1 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP082008 800 AM PDT MON JUL 21 2008
THE STRONG TROPICAL WAVE THAT THE NHC HAS BEEN WATCHING FOR SEVERAL DAYS HAS FINALLY OBTAINED ENOUGH ORGANIZED CONVECTION AND LOW-LEVEL CIRCULATION TO BECOME A TROPICAL DEPRESSION. THIS SAME SYSTEM ALMOST BECOME A TROPICAL DEPRESSION BEFORE MOVING INTO CENTRAL AMERICA A FEW DAYS AGO. THE LOW-LEVEL CENTER APPEARS TO BE ON THE SOUTHEASTERN SIDE OF BANDED DEEP CONVECTION FEATURES. THE INITIAL INTENSITY IS 30 KT IN LINE WITH QUIKSCAT ESTIMATES. A SLOW INCREASE IN WINDS IS INDICATED DURING THE NEXT DAY OR SO DUE TO MODERATE EASTERLY SHEAR. HOWEVER...THE SYSTEM COULD INTENSIFY A LITTLE FASTER THEREAFTER AND HAS A GOOD CHANCE TO BECOME A HURRICANE BEFORE MOVING OVER THE COOLER WATERS IN 4 DAYS OR SO. THE OFFICIAL FORECAST IS A BLEND OF THE SHIPS/LGEM MODELS. HWRF/GFDL DO NOT INTENSIFY THIS SYSTEM ON THEIR CURRENT INTEGRATION BUT HAVE INTENSIFIED IT QUITE A BIT BEFOREHAND.
THE BEST ESTIMATE OF INITIAL MOTION IS 280/12. A WEST OR WEST-NORTHWEST TRACK IS FORECAST FOR THE NEXT SEVERAL DAYS DUE TO MID-TROPOSPHERIC RIDGING OVER MEXICO. FOR THE FIRST ADVISORY... GUIDANCE IS IN GOOD AGREEMENT ON THIS WEST-NORTHWESTWARD TRACK. THE SYSTEM COULD SLOW A LITTLE IN A COUPLE OF DAYS AS A WEAKNESS IN THE RIDGE COULD AFFECT THE DEPRESSION. THE OFFICIAL FORECAST LIES JUST TO THE NORTH OF THE DYNAMICAL MODEL CONSENSUS.
000 WTPZ23 KNHC 212046 TCMEP3 TROPICAL STORM GENEVIEVE FORECAST/ADVISORY NUMBER 2 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP082008 2100 UTC MON JUL 21 2008
TROPICAL STORM CENTER LOCATED NEAR 13.9N 102.6W AT 21/2100Z POSITION ACCURATE WITHIN 30 NM
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT 15 KT
ESTIMATED MINIMUM CENTRAL PRESSURE 1004 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 45NE 0SE 0SW 0NW. 12 FT SEAS.. 30NE 0SE 0SW 0NW. 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 13.9N 102.6W AT 21/2100Z AT 21/1800Z CENTER WAS LOCATED NEAR 13.8N 101.9W
FORECAST VALID 22/0600Z 14.1N 104.3W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 45NE 0SE 0SW 30NW.
FORECAST VALID 22/1800Z 14.5N 106.6W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 50NE 30SE 35SW 50NW.
...THE SEVENTH TROPICAL STORM OF THE YEAR FORMS SOUTH OF MEXICO...
AT 200 PM PDT...2100Z...THE CENTER OF TROPICAL STORM GENEVIEVE WAS LOCATED NEAR LATITUDE 13.9 NORTH...LONGITUDE 102.6 WEST OR ABOUT 275 MILES...440 KM...SOUTHWEST OF ACAPULCO MEXICO AND ABOUT 370 MILES... 595 KM...SOUTH-SOUTHEAST OF MANZANILLO MEXICO.
GENEVIEVE IS MOVING TOWARD THE WEST NEAR 17 MPH...28 KM/HR...AND A MOTION TOWARD THE WEST OR WEST-NORTHWEST WITH A DECREASE IN FORWARD SPEED IS EXPECTED DURING THE NEXT COUPLE OF DAYS.
MAXIMUM SUSTAINED WINDS ARE NEAR 40 MPH...65 KM/HR...WITH HIGHER GUSTS. STEADY STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 50 MILES...85 KM FROM THE CENTER.
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 1004 MB...29.65 INCHES.
REPEATING THE 200 PM PDT POSITION...13.9 N...102.6 W. MOVEMENT TOWARD...WEST NEAR 17 MPH. MAXIMUM SUSTAINED WINDS...40 MPH. MINIMUM CENTRAL PRESSURE...1004 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 800 PM PDT.
SATELLITE IMAGES INDICATE THAT THE CENTER REMAINS ON THE EASTERN SIDE OF A NEW BURST OF DEEP CONVECTION WITH PLENTY OF BANDING FEATURES IN THE WESTERN SEMICIRCLE. AN ASCAT MICROWAVE PASS AT 1604 UTC SHOWED 30-35 KT WINDS WITH THIS SYSTEM AND DVORAK SATELLITE CLASSIFICATIONS FROM TAFB/SAB ARE A CONSENSUS T2.5...35 KT. THUS THE DEPRESSION HAS BEEN UPGRADED TO TROPICAL STORM GENEVIEVE AND AN INITIAL INTENSITY OF 35 KT WILL BE USED. MODERATE EASTERLY SHEAR SHOULD INHIBIT ANY RAPID DEVELOPMENT DURING THE NEXT DAY OR SO. THEREAFTER...MOST OF THE MODELS SHOW VERY LIGHT SHEAR...AND WITH WATERS THAT ARE PLENTY WARM IN THE PATH OF THE STORM...THE SYSTEM COULD BECOME A HURRICANE IN A FEW DAYS...OR SOONER. THE OFFICIAL FORECAST IS CLOSE TO A BLEND OF THE SHIPS/LGEM/GFDL MODELS AND IS NEAR THE PREVIOUS FORECAST.
GENEVIEVE HAS BEEN MOVING AT ABOUT 280/15 FOR THE PAST SEVERAL HOURS. MODEL GUIDANCE SUGGESTS THE STORM SHOULD SLOW DOWN RELATIVELY SOON...PERHAPS DUE TO THE RIDGE WEAKENING A LITTLE DUE TO A MID- TO UPPER-LEVEL TROUGH OVER MEXICO. THAT TROUGH DOESN'T LOOK VERY IMPRESSIVE ON WATER VAPOR IMAGES...SO I'M GOING TO KEEP THE STORM ON THE FASTER SIDE OF THE GUIDANCE...BUT NOT AS SPEEDY AS THE GFS. THE OFFICIAL FORECAST IS ADJUSTED WESTWARD OF THE PREVIOUS ONE.
Doesn't look stunning right now but ther eis a convective burst just recently, certainly enough there though IMO to justify the 35kts from the NHC. Also looks like its going to slowly strengthen over the next few days, forecasted to reach a hurricane. Pretty sharp start to the EPAC season.
Scary thought: This season's starting to draw parallels to 92. It was around this same time that Georgette had formed. Similar to 83 as well. However, it's no 85. In 85, by the time July was over, two tropical storms were still active: Kevin and Linda.
537 WTPZ33 KNHC 221452 TCPEP3 BULLETIN TROPICAL STORM GENEVIEVE ADVISORY NUMBER 5 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL EP082008 800 AM PDT TUE JUL 22 2008
AT 800 AM PDT...1500Z...THE CENTER OF TROPICAL STORM GENEVIEVE WAS LOCATED NEAR LATITUDE 14.7 NORTH...LONGITUDE 106.3 WEST OR ABOUT 325 MILES...525 KM...SOUTH-SOUTHWEST OF MANZANILLO MEXICO.
GENEVIEVE IS MOVING TOWARD THE WEST NEAR 14 MPH...22 KM/HR...AND THIS MOTION IS EXPECTED TO CONTINUE AT A SLIGHTLY SLOWER RATE OF SPEED DURING THE NEXT TWO DAYS.
MAXIMUM SUSTAINED WINDS ARE NEAR 60 MPH...95 KM/HR...WITH HIGHER GUSTS. STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS.
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 70 MILES...110 KM FROM THE CENTER.
ESTIMATED MINIMUM CENTRAL PRESSURE IS 997 MB...29.44 INCHES.
REPEATING THE 800 AM PDT POSITION...14.7 N...106.3 W. MOVEMENT TOWARD...WEST NEAR 14 MPH. MAXIMUM SUSTAINED WINDS...60 MPH. MINIMUM CENTRAL PRESSURE...997 MB.
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 200 PM PDT.