CWFMFL. DID BRING HIGH WINDS INLAND A BIT ALONG BOTH COASTS AND ALSO INCREASED WINDS OVER THE INTERIOR. MINIMUM TEMPERATURES LOOK GOOD...BUT MAY ACTUALLY BE A DEGREE OR SO TOO COOL IF WINDS DO NOT RELAX OVERNIGHT. IF THE COVERAGE OF SHOWERS REMAINS ISOLATED...RECORD LOW MINIMUM TEMPERATURES WILL BE A GOOD BET FOR MOST COASTAL OBSERVING SITES BY TOMORROW MORNING. 70/DD AVIATION DISCUSSION... /ISSUED 609 PM EST SUN JAN 24 2010/ AVIATION...EXPECT LOW/MID LEVEL CEILINGS TO CONTINUE OVERNIGHT OVER ALL TERMINALS. WL MENTION VCSH BUT DO NOT EXPECT SIGNIFICANT IMPACT TO OPERATIONS. THERE IS A POSSIBILITY OF ISOLD/WIDELY SCT TSTMS NEAR BOTH KAPF AND KPBI MONDAY MORNING AHEAD OF THE COLD FRNT THEREFORE WILL KEEP TEMPO GROUPS FOR THESE TWO TERMINALS BUT ONLY MVFR CONDITIONS. WL MENTION VCTS FOR REST OF THE TERMINALS ALTHOUGH THE CHANCES ARE LOW FOR THE SOUTHEASTERN TERMINALS. SFC WINDS SHOULD REMAIN MAINLY SSE OVER THE ERN TERMINALS OVERNIGHT AND SHIFT TO SW BY LATE MORNING/EARLY AFTERNOON AS THE FRONTAL BOUNDARY MOVES THROUGH, THEN TURNING W/NW BY LATE AFTERNOON. OVER KAPF THE SHIFT TO SW SHOULD HAPPEN EARLIER (ARND 12Z) AND NW BY EARLY AFTERNOON. PREV DISCUSSION... /ISSUED 114 PM EST SUN JAN 24 2010/ DISCUSSION...AN UPPER TROF IS CURRENTLY LOCATED OVER THE CENTRAL PORTIONS OF THE COUNTRY WHILE A SHORT WAVE AND SURFACE LOW IS MOVING NORTHWARD INTO THE GREAT LAKES REGION. THE ASSOCIATED COLD FRONT WITH THIS SURFACE LOW STRETCHES SOUTHWARD THROUGH LOWER THE MS VALLEY AND INTO THE GULF OF MEXICO. BETWEEN THE LOW/COLD FRONT AND THE SURFACE RIDGE OVER THE ATLANTIC THE PRESSURE GRADIENT IS TIGHT ENOUGH TO KEEP CONDITIONS BREEZY TO WINDY AT TIMES THROUGH THIS AFTERNOON AND AGAIN MONDAY AHEAD OF THE FRONT. MOISTURE WILL ALSO CONTINUE TO INCREASE AS IT IS TRANSPORTED NORTHWARD BY THE DEEPENING SOUTHERLY FLOW... PWATS ARE EXPECTED TO INCREASE FROM SLIGHTLY OVER AN INCH NOW TO AROUND 1.75-1.85 TOMORROW AFTERNOON. ALSO OF NOTE IS THAT FORECAST SOUNDINGS... MAINLY AROUND THE LAKE REGION... INDICATE THAT BY MONDAY MORNING A LLVL JET OF AROUND 50KTS WITH HELICITIES UP AROUND 500 WILL OCCUR, HOWEVER THE SAVING FEATURE IS THAT INSTABILITY WILL BE FOR THE MOST PART LACKING AND WINDS WILL BECOME UNIDIRECTIONAL THROUGH TONIGHT AS THE FRONT APPROACHES LIMITING SURFACE CONVERGENCE, BUT WITH THIS SAID THERE IS A SLIM CHANCE THAT A STRONG STORM OR TWO WILL BE POSSIBLE BEFORE MID MONDAY MORNING IN THE LAKE REGION AND GENERALLY BEFORE NOON ALONG THE FAR SOUTHEAST SECTIONS OF THE CWA AHEAD OF THE FRONT. BEHIND THE FRONT COOLER AND DRIER AIR WILL SPILL INTO S FL AS HIGH PRESSURE BUILDS INTO THE SE STATES AND SLOWLY TRAVERSES THE REGION THROUGH WEDNESDAY EVENING. LATE IN THE WEEK THE RIDGE SLIPS INTO THE ATLANTIC AND A WARMING AND MOISTENING TREND WILL OCCUR AS THE EAST FLOW RETURNS. MARINE...THE PRESSURE GRADIENT WILL REMAIN SUFFICIENTLY TIGHT ENOUGH TO PRODUCE WINDS OF AROUND 20KTS OR HIGHER THROUGH THE NIGHT AND INTO MONDAY AHEAD OF A COLD FRONT... LEADING TO SCA CONDITIONS THROUGH MONDAY AFTERNOON. THESE WINDS COMBINED WITH A SMALL SWELL GENERATED FROM A LARGE AREA OF LOW PRESSURE THAT DEVELOPED OFF THE EASTERN SEABOARD AND MOVED FARTHER INTO THE ATLANTIC WILL PRODUCE SEAS OF 6 TO 8 FEET THROUGH MONDAY AFTERNOON. THE SMALL SWELLS ARE MAINLY EXPECTED IN THE PALM BEACH WATERS. THE COLD FRONT WILL SWEEP THROUGH THE AREA MONDAY AFTERNOON WITH ELEVATED WINDS CONTINUING INTO THE EVENING, BUT HIGH PRESSURE WILL BUILD ACROSS THE REGION MONDAY NIGHT AND REMAIN IN PLACE THROUGH THE REST OF THE WEEK. FIRE WEATHER...MOIST CONDITIONS WILL REMAIN ACROSS S FL THROUGH MONDAY AFTERNOON, BUT A COLD FRONT WILL SWEEP THROUGH THE REGION DURING THE AFTERNOON. THIS FRONT WILL USHER IN A COOLER AND MUCH DRIER AIRMASS FOR TUESDAY AND WEDNESDAY. WEDNESDAY EVENING OR THURSDAY MORNING THE NE FLOW WILL BEGIN TO RETURN TO THE AREA ALLOWING ATLANTIC MOISTURE TO PUSH ACROSS THE MAINLAND. ATTM FOR TUES AFTERNOON THE FORECAST CONTAINS 3 TO AROUND 4 HRS OF MID 30S RH ACROSS THE INTERIOR AND LAKE REGION LEADING TO MARGINAL AT BEST RFW CONDITIONS. WED AFTERNOON THE LAKE REGION TO THE GULF COAST MAY FALL INTO THE MID TO UPPER 30S RH FOR A FEW HRS. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 76 51 71 51 / 70 20 - 0 FORT LAUDERDALE 80 56 72 54 / 70 30 - 0 MIAMI 79 56 72 55 / 60 30 - 0 NAPLES 73 51 70 48 / 70 10 - 0 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...SMALL CRAFT ADVISORY UNTIL 7 PM EST THIS EVENING FOR BISCAYNE BAY-COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL OUT 20 NM-COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL OUT 20 NM-LAKE OKEECHOBEE-WATERS FROM DEERFIELD BEACH TO OCEAN REEF, FL EXTENDING FROM 20 NMTO THE TERRITORIAL WATERS OF THE BAHAMAS-WATERS FROM JUPITER INLET TO DEERFIELD BEACH, FL EXTENDING FROM 20 NM TO 60 NM. GM...SMALL CRAFT ADVISORY UNTIL 7 PM EST THIS EVENING FOR COASTAL WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL OUT 20 NM- COASTAL WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE, FL OUT 20 NM-GULF WATERS FROM CHOKOLOSKEE TO BONITA BEACH, FL EXTENDING FROM 20 TO 60 NM. && $$