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Quote: ULL discussion for Miami NWS. Its moving to the west folks. SOUTH FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 1000 AM EDT TUE AUG 31 2004 .UPDATE...LATEST SURFACE ANALYSIS SHOWS TROUGH EXTENDING FROM THE NE FL COAST SW THROUGH EAST CNTRL FL...ACROSS LAKE OKEE AND INTO THE SW GULF...ALBEIT SUBTLE...WITH 88D AND SATELLITE LOOP SHOWING SOME CONVECTIVE ACTIVITY ALONG IT OFF THE NE FL AND SW FL COASTS. AT THE UPR LVLS...MOST PROMINENT FEATURE IS UPR LVL LOW ACROSS THE NW BAHAMAS WHICH CONTINUE TO TRACKS WEST. 12Z SNDG PWAT...WHICH IS ALSO CONFIRMED BY GPSMET RETRIEVALS IS RUNNING AROUND 1.9 TO 2 INCHES THIS MORNING. THIS IS BETTER THAN YESTERDAY. HOWEVER...WATER VAPOR LOOP SHOWS A SLIGHTLY DRIER AIR LAYER WEST OF THE UPR LOW ACROSS THE ATLANTIC COASTAL WATERS. SUBSIDENCE ASSOCIATED WITH THIS FEATURE HAS BEEN DISSIPATING CONVECTIVE ACTIVITY DEVELOPING ACROSS THE ATLANTIC WATERS THIS MORNING. WITH THE STEERING FLOW FROM THE SE AROUND 5 KNOTS PER 12Z SNDG...AND UPR LVL FEATURE TRACKING WEST...LOOKS LIKE BEST CHANCES OF PRECIPITATION SHOULD BE IN THE INTERIOR FOR TODAY AND JUST INLAND OFF THE SW FLORIDA COAST. THIS GRADIENT IS CURRENTLY REFLECTED IN THE FCST SO PLAN NO CHANGES. 12Z CONVECTIVE PARAMETERS CAME UP WITH A CAPE OF 4180..MODIFIED FOR AFTERNOON INLAND HIGHS OF AROUND 92...LI OF -8...AND VERTICAL TOTALS OF AROUND 24. SO TODAY STORMS HAVE A SLIGHTLY BETTER CHANCE OF ONE OR TWO BEING STRONGER THAN USUAL WITH GUSTS IN EXCESS OF 35 MPH AND SMALL HAIL...PARTICULARLY INLAND. |