NPWMFL URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MIAMI FL 551 AM EST SAT DEC 25 2010 ...FREEZE WATCHES NOW IN EFFECT FOR MOST OF MAINLAND SOUTH FLORIDA FOR SUNDAY NIGHT/MONDAY MORNING... AS WELL AS MONDAY NIGHT/TUESDAY MORNING... FLZ063-066-067-070-071-073-075-174-252300- /O.CON.KMFL.FZ.A.0019.101227T0600Z-101227T1400Z/ /O.CON.KMFL.FZ.A.0020.101228T0600Z-101228T1400Z/ GLADES-HENDRY-INLAND PALM BEACH-INLAND COLLIER-INLAND BROWARD- INLAND MIAMI DADE-MAINLAND MONROE-FAR SOUTH MIAMI DADE- INCLUDING THE CITIES OF...MOORE HAVEN...CLEWISTON...PAHOKEE... SOUTH BAY...BELLE GLADE...WELLINGTON...IMMOKALEE 551 AM EST SAT DEC 25 2010 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING... A FREEZE WATCH REMAINS IN EFFECT FROM LATE SUNDAY NIGHT THROUGH MONDAY MORNING. A FREEZE WATCH REMAINS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING. A POWERFUL ARCTIC COLD FRONT WILL SURGE RAPIDLY SOUTHEASTWARD ACROSS SOUTH FLORIDA ON SUNDAY MORNING...WITH TEMPERATURES EXPECTED TO FALL THROUGHOUT THE DAY. THE COLD AND DRY ARCTIC AIR MASS WILL CONTINUE TO BE ADVECTED SOUTHWARD ON MODERATE TO STRONG NORTHWEST WINDS FROM SUNDAY NIGHT INTO MONDAY MORNING...WITH SUBFREEZING TEMPERATURES RANGING FROM THE UPPER 20S IN GLADES COUNTY TO NEAR FREEZING ACROSS MUCH OF THE REMAINDER OF SOUTH FLORIDA BY SUNRISE ON MONDAY. WINDS WILL DIMINISH FROM MONDAY NIGHT INTO TUESDAY MORNING...BUT WITH CLEAR SKIES AND A COLD AND DRY ARCTIC AIR MASS REMAINING IN PLACE...SUBFREEZING TEMPERATURES WILL BE POSSIBLE ONCE AGAIN DURING THIS PERIOD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$