Frost Advisory 9, NWS Jacksonville, FL

256 
WWUS72 KJAX 290157
NPWJAX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
857 PM EST WED DEC 28 2011

FLZ020>023-030>032-035>037-040-GAZ132>136-149>152-162>164-291400-
/O.CON.KJAX.FR.Y.0009.111229T0800Z-111229T1400Z/
HAMILTON-SUWANNEE-COLUMBIA-BAKER-UNION-BRADFORD-CLAY-GILCHRIST-
ALACHUA-PUTNAM-MARION-COFFEE-JEFF DAVIS-BACON-APPLING-WAYNE-
ATKINSON-WARE-PIERCE-BRANTLEY-ECHOLS-CLINCH-CHARLTON-
INCLUDING THE CITIES OF...JASPER...LIVE OAK...LAKE CITY...
MACCLENNY...LAKE BUTLER...STARKE...GREEN COVE SPRINGS...TRENTON...
GAINESVILLE...PALATKA...OCALA...DOUGLAS...HAZLEHURST...ALMA...
BAXLEY...JESUP...PEARSON...WAYCROSS...BLACKSHEAR...NAHUNTA...
STATENVILLE...HOMERVILLE...FOLKSTON
857 PM EST WED DEC 28 2011

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM EST
THURSDAY...

* EVENT...TEMPERATURES WILL DROP INTO THE MID 30S OVERNIGHT.
  THEREFORE...WIDESPREAD FROST CAN BE EXPECTED.

* TIMING...UNDER CLEAR SKIES TEMPERATURES WILL FALL OVERNIGHT... 
  WITH FROST FORMATION POSSIBLE BEGINNING AROUND 3 AM. 
  TEMPERATURES WILL QUICKLY WARM AFTER SUNRISE...WITH FROST 
  POTENTIAL ENDING BY 9 AM. 

* IMPACT...SENSITIVE OUTDOOR PLANTS MAY BE KILLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
201 PM EST WED DEC 28 2011

.SHORT TERM /THROUGH THURSDAY/...

SURFACE HIGH PRESSURE WILL PROVIDE FOR MAINLY CLEAR SKIES TONIGHT.
THE EXCEPTION WILL BE HIGH CLOUDINESS MOVING IN FROM THE WEST IN
RESPONSE TO A MID LEVEL TROUGH. THIS TROUGH WILL PASS EAST ACROSS
THE FORECAST AREA DURING THE DAY THURSDAY. HOWEVER MOST OF THE UPPER
MOISTURE ASSOCIATED WITH IT IS IN ADVANCE. THEREFORE THE EXPECTED
TIMEFRAME FOR THE CORE OF THE HIGH CLOUDS WILL BE ABOUT 03Z THIS
EVENING TO 15Z THURSDAY. HOWEVER...GIVEN THE HEIGHT NOT EXPECTING
THESE CLOUDS TO HAVE MUCH IMPACT ON THE TEMPERATURE FORECAST
OVERNIGHT. MAV MOS GUIDANCE APPEARS TO BE THE COLD OUTLIER THIS
RUN...AND HAVE FAVORED A LITTLE WARMER BLEND OF NUMERICAL GUIDANCE
FOR THIS OVERNIGHT TIME PERIOD. WITH THIS...INLAND AREAS ARE
EXPECTED TO REACH READINGS FAVORABLE FOR FROST FORMATION...COUPLED
WITH LIGHT WINDS. A FEW LOCATIONS COULD GET DOWN TO AROUND
FREEZING...BUT THE DURATION AT OR BELOW FREEZING SHOULD BE BRIEF.
THEREFORE...FAVORING FROST ADVISORY INLAND TONIGHT. AFTER MAINLY
MORNING HIGH CLOUDS...EXPECT A MAINLY SUNNY DAY ON THURSDAY...WITH
TEMPERATURES IN LINE WITH MAV MOS.

&&

.LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...

AS THE SURFACE RIDGE PULLS A LITTLE FURTHER TO THE EAST...THE FLOW
WILL BEGIN TO TURN MORE FROM THE SOUTH/SOUTHWEST. THUS ALLOWING
TEMPS TO BE A LITTLE MORE MODERATE THURSDAY NIGHT...AND LEADING
TO A WARMING TREND INTO THE WEEKEND. AN EASTERLY MOVING SURFACE
FRONT MOVING WELL TO THE NORTH OF THE REGION WILL PROVIDE FOR A
FEW EXTRA CLOUDS FRIDAY NIGHT INTO SATURDAY MORNING...BUT NOT ENOUGH
MOISTURE TO PROVIDE PRECIP OVER CWA. A COLD FRONT WILL SLIDE
SOUTHEAST ACROSS THE FORECAST AREA SUNDAY NIGHT INTO MONDAY. WHILE
THIS BOUNDARY IS EXPECTED TO BRING A NOTICEABLE TEMPERATURE
DIFFERENCE...LITTLE MOISTURE IS EXPECTED WITH IT.
OTHERWISE...THERE IS NO SIGNIFICANT CHANCE FOR PRECIPIATION DURING
THIS PERIOD.

&&

.AVIATION...
VFR CONDITIONS WILL PREVAIL. SCATTERED TO OCCASIONALLY BROKEN CIRRUS
WILL CROSS THE AREA TONIGHT INTO THURSDAY. WEST TO NORTHWEST WINDS
AROUND 10 KT THIS AFTN WILL BECOME LIGHT THIS EVENING.

&&

.MARINE...
WINDS/SEAS CONTINUE TO DECREASE. WILL LOWER THE SMALL CRAFT
ADVISORIES WITH THE AFTERNOON ISSUANCE. BENIGN CONDITIONS ON
THE COASTAL WATERS THROUGH THE WEEKEND.

RIP CURRENTS: LOW RISK EXPECTED THROUGH THE WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  35  64  38  70 /   0   0   0   0
SSI  41  61  45  66 /   0   0   0   0
JAX  38  63  40  68 /   0   0   0   0
SGJ  40  63  43  68 /   0   0   0   0
GNV  34  65  35  71 /   0   0   0   0
OCF  35  66  37  72 /   0   0   0   0

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...FROST ADVISORY FROM 3 AM TO 9 AM EST THURSDAY FOR ALACHUA-BAKER-
     BRADFORD-CLAY-COLUMBIA-GILCHRIST-HAMILTON-MARION-PUTNAM-
     SUWANNEE-UNION.

GA...FROST ADVISORY FROM 3 AM TO 9 AM EST THURSDAY FOR APPLING-
     ATKINSON-BACON-BRANTLEY-CHARLTON-CLINCH-COFFEE-ECHOLS-JEFF
     DAVIS-PIERCE-WARE-WAYNE.

AM...SMALL CRAFT ADVISORY UNTIL 4 PM EST THIS AFTERNOON FOR ALTAMAHA
     SOUND GA TO FERNANDINA BEACH FL 20 NM TO 60 NM OFFSHORE-
     FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO 60 NM OFFSHORE-
     ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO 60 NM OFFSHORE.

&&

STRUBLE/ALLEN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
437 AM EST WED DEC 28 2011

FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-291000-
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-COFFEE-
JEFF DAVIS-BACON-APPLING-WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-
INLAND GLYNN-COASTAL GLYNN-ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-
COASTAL CAMDEN-
437 AM EST WED DEC 28 2011

THIS OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST GEORGIA.

...AREAS OF FROST EXPECTED LATE TONIGHT AND THURSDAY NIGHT...

.DAY ONE...TODAY AND TONIGHT...

MINIMUM TEMPERATURES ARE EXPECTED TO FALL INTO THE LOWER TO MIDDLE
30S LATE TONIGHT OVER INLAND SECTIONS WITH AREAS OF FROST POSSIBLE.
THE AMOUNT OF FROST EXPECTED ALONG WITH A POSSIBLE LIGHT FREEZE
WILL DEPEND ON THE AMOUNT OF HIGH CLOUDINESS THAT DEVELOPS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

CLEAR SKIES WILL ALLOW FOR ANOTHER NIGHT WITH LOWS IN THE 30S OVER
INLAND SECTIONS WITH AREAS OF FROST BY EARLY FRIDAY MORNING. FROST
ADVISORIES MAY NEED TO BE POSTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE
IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.