Key West All Time Record Low...Flurrries/Sleet Possible in Northern Florida
All time record low was set in Key West Thursday morning, 47 shattering the old record set back in 1897. Here is a discussion from the Miami National Weather Service earlier today:
..CRAZY, COLD MISERABLE SOUTH FL DAY... FREEZE WARNINGS ISSUED FOR PARTS OF THE AREA... UPDATE...SEVERAL UPDATES THIS MORNING: TEMPS PLUMMETED ACROSS SOUTH FL THIS MORNING AND WITH THE CLOUDS/LIGHT RAIN AND STRONG COLD AIR ADVECTION ..SEE NO REASON TEMPS WILL BUDGE THROUGHOUT THE DAY...WHICH IS EXACTLY WHAT WRF SHOWS. SO UPDATED THE TEMP FCST TO GO WITH THE EXPECTED STEADY TEMPS ALL AREAS THROUGH THE AFTERNOON. ALSO INCREASED POPS SKY TO WHAT WE HAVE WHICH WILL BE OCCASIONAL LIGHT RAIN/DRIZZLE THROUGHOUT THE DAY BEFORE THINGS CLEAR THIS EVENING. FREEZE WARNING HAS BEEN ISSUED FOR ALL OF COLLIER, HENDRY, GLADES, AND PALM BEACH COUNTIES FOR TONIGHT INTO SUNDAY MORNING. GIVEN SUCH STRONG COLD AIR ADVECTION SEEN THIS MORNING...CONFIDENCE HAS GROWN FOR FREEZING TEMPS TO OCCUR ACROSS THE NORTH HALF OF THE SERVICE AREA...AND SO THIS WARNING WAS ISSUED. TEMPS OF 25-30 ARE EXPECTED ACROSS INTERIOR SECTIONS OF THIS REGION...TO AROUND FREEZING ACROSS THE NAPLES/WEST PALM BEACH METROPOLITAN AREAS. FREEZE WATCH CONTINUES IN EFFECT FOR BROWARD, MIAMI-DADE AND MAINLAND MONROE COUNTIES. THERE IS A HIGHER DEGREE OF UNCERTAINTY IN FREEZING TEMPS OCCURRING ACROSS THIS REGION...SO WILL WAIT FOR THE 12Z MODEL GUIDANCE CYCLE AND MAKE AN ASSESSMENT ON POSSIBLE UPGRADES THIS AFTERNOON. NEED TO MENTION THE FACT THAT THERE HAS BEEN SOME SLEET ACROSS PORTIONS OF CENTRAL FLORIDA ESPECIALLY ALONG AND NORTH OF TAMPA TO ORLANDO. FORECAST SOUNDINGS SHOWS WET BULB ZERO HEIGHTS CRASHING TO BELOW 1 FT ACROSS THE LAKE REGION BY 00Z THIS EVENING. IT IS GOING TO END UP BEING A RACE BETWEEN THE COLD AIR AND ENDING PRECIP. THE PRECIP LIKELY WILL END BEFORE IT GETS COLD ENOUGH TO SUPPORT ANYTHING MORE THAN RAIN ACROSS THE SERVICE AREA. HOWEVER...AS HAS BEEN MENTIONED THE PREVIOUS FEW DAYS...THERE IS A REMOTE POSSIBILITY OF A LITTLE SLEET MIXING IN WITH THE LIGHT RAIN BY THIS EVENING ON THE BACK SIDE OF THE PRECIP SHIELD...MAINLY NORTH OF AN EVERGLADES CITY TO WEST PALM BEACH LINE. THE PROBABILITY OF THIS OCCURRING IS LOW ENOUGH TO CONTINUE TO EXCLUDE THIS MENTION IN THE OFFICIAL FORECAST...AND IF IT OCCURRED IT WOULD HAVE NO ADVERSE IMPACTS. IT`S CRAZY TO EVEN HAVE TO DISCUSS THIS IN SOUTH FLORIDA!!
..CRAZY, COLD MISERABLE SOUTH FL DAY... FREEZE WARNINGS ISSUED FOR PARTS OF THE AREA... UPDATE...SEVERAL UPDATES THIS MORNING: TEMPS PLUMMETED ACROSS SOUTH FL THIS MORNING AND WITH THE CLOUDS/LIGHT RAIN AND STRONG COLD AIR ADVECTION ..SEE NO REASON TEMPS WILL BUDGE THROUGHOUT THE DAY...WHICH IS EXACTLY WHAT WRF SHOWS. SO UPDATED THE TEMP FCST TO GO WITH THE EXPECTED STEADY TEMPS ALL AREAS THROUGH THE AFTERNOON. ALSO INCREASED POPS SKY TO WHAT WE HAVE WHICH WILL BE OCCASIONAL LIGHT RAIN/DRIZZLE THROUGHOUT THE DAY BEFORE THINGS CLEAR THIS EVENING. FREEZE WARNING HAS BEEN ISSUED FOR ALL OF COLLIER, HENDRY, GLADES, AND PALM BEACH COUNTIES FOR TONIGHT INTO SUNDAY MORNING. GIVEN SUCH STRONG COLD AIR ADVECTION SEEN THIS MORNING...CONFIDENCE HAS GROWN FOR FREEZING TEMPS TO OCCUR ACROSS THE NORTH HALF OF THE SERVICE AREA...AND SO THIS WARNING WAS ISSUED. TEMPS OF 25-30 ARE EXPECTED ACROSS INTERIOR SECTIONS OF THIS REGION...TO AROUND FREEZING ACROSS THE NAPLES/WEST PALM BEACH METROPOLITAN AREAS. FREEZE WATCH CONTINUES IN EFFECT FOR BROWARD, MIAMI-DADE AND MAINLAND MONROE COUNTIES. THERE IS A HIGHER DEGREE OF UNCERTAINTY IN FREEZING TEMPS OCCURRING ACROSS THIS REGION...SO WILL WAIT FOR THE 12Z MODEL GUIDANCE CYCLE AND MAKE AN ASSESSMENT ON POSSIBLE UPGRADES THIS AFTERNOON. NEED TO MENTION THE FACT THAT THERE HAS BEEN SOME SLEET ACROSS PORTIONS OF CENTRAL FLORIDA ESPECIALLY ALONG AND NORTH OF TAMPA TO ORLANDO. FORECAST SOUNDINGS SHOWS WET BULB ZERO HEIGHTS CRASHING TO BELOW 1 FT ACROSS THE LAKE REGION BY 00Z THIS EVENING. IT IS GOING TO END UP BEING A RACE BETWEEN THE COLD AIR AND ENDING PRECIP. THE PRECIP LIKELY WILL END BEFORE IT GETS COLD ENOUGH TO SUPPORT ANYTHING MORE THAN RAIN ACROSS THE SERVICE AREA. HOWEVER...AS HAS BEEN MENTIONED THE PREVIOUS FEW DAYS...THERE IS A REMOTE POSSIBILITY OF A LITTLE SLEET MIXING IN WITH THE LIGHT RAIN BY THIS EVENING ON THE BACK SIDE OF THE PRECIP SHIELD...MAINLY NORTH OF AN EVERGLADES CITY TO WEST PALM BEACH LINE. THE PROBABILITY OF THIS OCCURRING IS LOW ENOUGH TO CONTINUE TO EXCLUDE THIS MENTION IN THE OFFICIAL FORECAST...AND IF IT OCCURRED IT WOULD HAVE NO ADVERSE IMPACTS. IT`S CRAZY TO EVEN HAVE TO DISCUSS THIS IN SOUTH FLORIDA!!
The Jacksonville, NWS reported:
SLIGHT CHANCE OF SLEET OR SNOW FLURRIES THIS MORNING...A SLIGHT CHANCE OF SNOW FLURRIES OR SLEET IS POSSIBLE THIS MORNING... MAINLY SOUTH OF A LINE FROM ST AUGUSTINE TO GAINESVILLE. NO ACCUMULATION IS EXPECTED. A HARD FREEZE WILL OCCUR TONIGHT ALONG WITH WIND CHILLS IN THE TEENS.
George Wright is a Certified Consulting Meteorologist and President of Wright Weather Consulting, Inc.
posted by GW at 1/09/2010 01:48:00 PM
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