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#11 |
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Senior Member
Join Date: May 2006
Location: Texas, Lake Ray Hubbard and NH, Long Island Winnipesaukee
Posts: 2,921
Thanks: 1,050
Thanked 901 Times in 531 Posts
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So I was reading the reports for the National Huricane Center to be found here:
http://www.nhc.noaa.gov The report in full with what I believe to be important in bold: HURRICANE IRENE DISCUSSION NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092011 500 AM EDT THU AUG 25 2011 A HURRICANE HUNTER AIRCRAFT INVESTIGATING IRENE A FEW HOURS AGO FOUND THAT THE CENTRAL PRESSURE HAD DROPPED TO 950 MB. HOWEVER...FLIGHT-LEVEL AND SFMR-OBSERVED SURFACE WIND DATA SUPPORTED A CURRENT INTENSITY OF NO MORE THAN 100 KT...AND THIS IS PROBABLY GENEROUS. IT IS PRESUMED THAT THE INTENSIFICATION PROCESS WAS HALTED BY AN EYEWALL REPLACEMENT EVENT AS SUGGESTED BY MICROWAVE IMAGERY AND AIRCRAFT OBSERVATIONS. SINCE THE ENVIRONMENT APPEARS TO BE CONDUCIVE WITH WEAK SHEAR...WARM WATERS...AND AN UPPER-LEVEL OUTFLOW ANTICYCLONE OVER THE HURRICANE...THE OFFICIAL FORECAST SHOWS RE-STRENGTHENING WITHIN A DAY OR SO. AFTER A COUPLE OF DAYS...THE SHIPS GUIDANCE SHOWS A SIGNIFICANT INCREASE IN VERTICAL SHEAR...SO A STEADY DECREASE IN INTENSITY IS LIKELY. HOWEVER...SINCE IRENE HAS SUCH A LARGE AND INTENSE CIRCULATION...IT WILL PROBABLY BE RATHER SLOW TO WEAKEN. GIVEN THE LIMITATIONS IN OUR ABILITY TO PREDICT INTENSITY CHANGE...THERE IS SIGNIFICANT UNCERTAINTY AS TO JUST HOW STRONG IRENE WILL BE WHEN IT NEARS THE EASTERN AND NORTHEASTERN U.S. COAST. THE INITIAL MOTION CONTINUES TO BE ABOUT 315/10. THERE HAS BEEN NO CHANGE TO THE TRACK FORECAST REASONING. IRENE SHOULD TURN NORTHWARD AS IT MOVES THROUGH A BREAK IN THE SUBTROPICAL RIDGE DURING THE NEXT 48 HOURS. THEREAFTER...A SHORTWAVE TROUGH MOVING THROUGH THE GREAT LAKES IS LIKELY TO TURN THE HURRICANE TOWARD THE NORTH-NORTHEAST. IN THE LATTER PART OF THE FORECAST PERIOD...GLOBAL MODELS SHOW THE SHORTWAVE BYPASSING IRENE AND THE HURRICANE BECOMING EMBEDDED WITHIN A BROAD AND SLOW-MOVING MID-TROPOSPHERIC TROUGH OVER THE EASTERN UNITED STATES. THIS STEERING PATTERN SHOULD PREVENT IRENE FROM MOVING WELL OFFSHORE OF THE NORTHEASTERN STATES. THE OFFICIAL TRACK FORECAST HAS BEEN SHIFTED VERY SLIGHTLY TO THE WEST OF THE PREVIOUS ONE AND IS ROUGHLY IN THE MIDDLE OF THE GUIDANCE ENVELOPE...WHICH IS BRACKETED BY THE U.K. MET. OFFICE MODEL ON THE EAST AND THE GFDL MODEL ON THE WEST. HURRICANE AND TROPICAL STORM WATCHES ARE NOW NECESSARY FOR A PORTION OF THE SOUTHEAST AND CENTRAL U.S. EAST COAST. In short it looks like Irene will be coming for Dinner over the weekend....I plan to be at the camp for the storm to keep an eye on things. I will probably run some extra security lines to the boat for safety. And potentially take the Jet ski out of the water. I will also throw the lawn chairs and tables into the boat shed to prevent them from scattering.
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Life is about how much time you can spend relaxing... I do it on an island that isn't really an island..... |
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