Special Weather Statement, NWS Jacksonville, FL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
235 PM EDT MON OCT 8 2012

.NEAR TERM...CONSIDERABLE HIGH CLOUDS...FROM AN MCS IN THE NE
GULF...HAS DELAYED THE DAYTIME HEATING AND ONSET OF NUMEROUS
SHOWERS/STORMS OVER THE AREA. ISOLATED STORMS WERE DEVELOPING ALONG
THE SE GA COASTS WHERE A BROAD SURFACE LOW WAS. THERE HAS BEEN
ROTATION ALOFT IN SOME OF THESE STORMS. THERE WERE SCATTERED
SHOWERS/ STORMS BOTH IN THE ATLANTIC AND NE GULF IN ASSOCIATION WITH
BROAD LOW PRESSURE AREAS. THE ACTIVITY WAS MOVING SLOWLY NORTHEAST.
MEANWHILE...A FRONTAL BOUNDARY REMAINED NEARLY STATIONARY ACROSS NE
FL FROM AROUND A JAX TO LIVE OAK LINE. MORE COOLER AND STABLE BEHIND
THIS FRONT WITH CONSIDERABLE LOW CLOUDS THAT WERE SLOWLY LIFTING. AS
A SHORT WAVE MOVES IN FROM THE GULF LATE THIS AFTERNOON IT WILL
INTERACT WITH THE FRONT AND STILL EXPECTING A ROUND OF SCATTERED TO
NUMEROUS SHOWERS/STORMS. THE RIGHT REAR QUADRANT OF THE SUBTROPICAL
JET WILL ALSO BE MOVING THROUGH WHICH MAY HELP ENHANCE STORMS. A FEW
STORMS MAY STILL BE STRONG...ESPECIALLY ACROSS THE FAR SOUTHERN AND
SE ZONES WHERE THERE WILL BE LESS HIGH CLOUD COVER AND BETTER
HEATING. WILL STILL KEEP MENTION OF ISOLATED STORMS ACROSS SE GA DUE
TO THE STRONG UPPER DYNAMICS THAT MAY OVERCOME THE SURFACE BASED
STABILITY...BUT BEST COVERAGE WILL BE ALONG AND SE OF THE FRONTAL
BOUNDARY.

.SHORT TERM...

TONIGHT...WILL KEEP CHANCE POPS ACROSS THE EASTERN PORTION OF
NE FL INTO THE EARLY EVE AS THE SHORT WAVE MOVING IN FROM THE GULF
INTERACTS WITH THE FRONTAL BOUNDARY. AFTER THE PASSAGE OF THE SHORT
WAVE...THE COLD FRONT WILL SWING SE OUT OF THE AREA AND WILL SEE
AN END TO THE SHOWER/TSTM ACTIVITY. HOWEVER...MODELS AND MODEL SOUNDINGS
INDICATE CONSIDERABLE LOW CLOUDS MOVING IN AREA WIDE BY LATE THIS
EVE AND OVERNITE...BEHIND FRONT...AS LOW BASED INVERSION SETS IN ALONG
WITH WEAK ISENTROPIC LIFT. WILL ALSO MENTION PATCHY FOG ACROSS THE
FAR SOUTHERN ZONES WHERE BOUNDARY LAYER WINDS THERE WILL BE WEAKER.
WILL HAVE A SHARP NW-SE TEMP GRADIENT BEHIND FRONT WITH MIN TEMPS
RANGING FROM THE MID/UPPER 50S ACROSS SE GA TO THE MID/UPPER 60S)
ACROSS THE FAR SE ZONES.

TUESDAY/TUESDAY NIGHT...THE LOW CLOUDS WILL PERSIST INTO TUESDAY AND
THEN BEGIN TO LIFT ACROSS SE GA BY EARLY AFTERNOON AND ELSEWHERE BY
MID/LATE AFTERNOON. HIGH PRESSURE BUILDS INTO THE REGION...WITH THE
FRONTAL BOUNDARY GETTING A PUSH INTO CENTRAL FLORIDA. CONDITIONS
WILL DRY SIGNIFICANTLY...WITH MINOR CHANCES OF SHOWERS OFFSHORE AND
ALONG THE IMMEDIATE COAST MAINLY SOUTH OF JAX TUESDAY AFTN. HIGH
TEMPERATURES TUESDAY WILL BE 3-5 DEGREES COOLER THAN MONDAY...WITH
LOWS NEAR 60 AS FAR SOUTH AS INTERIOR SECTIONS OF NE FL TUESDAY
NIGHT.

.LONG TERM.../WEDNESDAY THROUGH SUNDAY/...
SURFACE HIGH PRESSURE OVER THE SOUTHEASTERN STATES WILL BE
REINFORCED BY ANOTHER SURFACE RIDGE MIGRATING EASTWARD ACROSS THE
TENNESSEE VALLEY...AS OUR FLOW ALOFT BRIEFLY BECOMES NORTHWESTERLY.
THIS WEATHER PATTERN WILL KEEP A SEASONABLY COOL AND DRY AIR MASS IN
PLACE THROUGH EARLY FRIDAY...WITH HIGHS GENERALLY BETWEEN 80 AND 85
AND LOWS RANGING FROM THE UPPER 50S OVER INTERIOR SOUTHEAST GEORGIA
TO THE UPPER 60S ALONG THE IMMEDIATE COAST.

BROAD TROUGHING ALOFT OVER THE EASTERN UNITED STATES WILL LIFT
NORTHEASTWARD LATE IN THE WEEK...WITH RIDGING ALOFT EXPANDING
OVER OUR AREA FROM THE GULF OF MEXICO. ONSHORE FLOW WILL DEVELOP
BY FRIDAY AND GRADUALLY DEEPEN NEXT WEEKEND...RESULTING IN A
GRADUAL UPTICK IN TEMPERATURES AND DEWPOINTS TO JUST ABOVE MID
OCTOBER CLIMATOLOGY REGION-WIDE. MOISTURE SHOULD REMAIN RELATIVELY
SHALLOW THROUGH SATURDAY...AND HAVE LEFT RAIN CHANCES OUT OF THE
FORECAST GRIDS UNTIL SATURDAY NIGHT...EXCEPT ISOLATED COVERAGE FOR
THE COASTAL WATERS. HAVE PLACED ISOLATED POPS IN THE GRIDS REGION-
WIDE FOR THE END OF NEXT WEEKEND AS LONG-TERM GUIDANCE DEPICTS
VEERING IN OUR LOW-LEVEL WIND PROFILE IN CONCERT WITH INCREASING
DEEP-LAYERED MOISTURE.

&&

.AVIATION...TEMPO GROUPS USED FOR REST OF THE AFTN WITH INCREASED
CHANCE OF TSTMS WITH OCNL MVFR TO IFR CIGS/VSBY EXPECTED THROUGH AT
LEAST 22Z. CONVECTION SHOULD WIND DOWN IN THE EVENING HOURS WITH
VFR CONDS FOR A TIME BEFORE THE COLD FRONT UNDERCUTS MOIST AIR ALOFT
AND CREATES STRATUS AND SOME MVFR VSBY RESTRICTIONS. CIGS WILL BE
SLOW TO LIFT ON TUESDAY AND HAVE IFR/MVFR CONTINUING INTO LATE
MORNING.

&&

.MARINE...E TO SELY WINDS NEAR 10-15 KT AND SEAS OF ABOUT 2-3 FT.
WINDS WILL SHIFT TO NLY LOW ALONG A STNRY FRONT MOVES OFFSHORE THIS
EVENING AND SHIFTS WINDS AROUND AND PUSHING A COLD FRONT S OF THE
WATERS OVERNIGHT. NLY WINDS UP TO ABOUT 15 KT POSSIBLE TONIGHT
AND SMALL CRAFT EXERCISE CAUTION CONDITIONS LIKELY BY TUESDAY BUT
WEAKENING BY WED. ANOTHER NELY SURGE/BACKDOOR FRONT MOVES IN THU
WITH WINDS INCREASING AGAIN TO SCEC CRITERIA AND POSSIBLY LASTING
THROUGH SAT.

RIP CURRENTS: LOW RISK TODAY...POSSIBLY BECOMING MODERATE TUESDAY
UNDER INCREASING ONSHORE FLOW.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  57  77  54  83 /  20  10  10  10
SSI  66  75  62  81 /  40  10  10  10
JAX  66  78  58  83 /  40  10  10  10
SGJ  72  80  66  82 /  50  20  10  10
GNV  66  83  61  85 /  30  10  10  10
OCF  68  85  63  87 /  40  10  10  10

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...NONE.

&&

PP/ARS/AW

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1252 PM EDT MON OCT 8 2012

AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-
GAZ132>136-149>154-162>166-091000-
ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT 20 NM-
FERNANDINA BEACH TO ST AUGUSTINE FL OUT 20 NM-
ST AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM-
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-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-
1252 PM EDT MON OCT 8 2012

...SCATTERED TO NUMEROUS STORMS THIS AFTERNOON...

THIS OUTLOOK IS FOR NORTHEAST FLORIDA...SOUTHEAST GEORGIA AND THE
ADJACENT COASTAL WATERS.

.DAY ONE...REST OF TODAY AND TONIGHT...

A FRONTAL BOUNDARY WILL REMAIN NEARLY STATIONARY ACROSS THE REGION
TODAY. SCATTERED TO NUMEROUS SHOWERS AND STORMS WILL DEVELOP ALONG
THE BOUNDARY THIS AFTERNOON. A FEW OF THE STRONGER STORMS WILL BE
CAPABLE OF PRODUCING GUSTY WINDS...LOCALLY HEAVY RAINFALL...AND
MARGINALLY SEVERE HAIL. STORM MOTION WILL BE NORTHEAST AROUND 10 TO
15 MPH. IN ADDITION...ISOLATED STORMS MAY PRODUCE WATERSPOUTS OVER
THE COASTAL WATERS. MOST OF THE STORM ACTIVITY WILL DIMINISH AFTER 8
PM.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

NORTHEAST FLOW WILL INCREASE ACROSS THE COASTAL WATERS...WITH WINDS
AND SEAS POSSIBLY REACHING SMALL CRAFT EXERCISE CAUTION CRITERIA
TUESDAY AND WEDNESDAY. IN ADDITION...A MODERATE RISK OF RIP CURRENTS
MAY BE POSSIBLE AT AREA BEACHES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME. HOWEVER...SPOTTERS
ARE ASKED TO SELF ACTIVATE IF WARNINGS ARE ISSUED THIS AFTERNOON.

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

ARS

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
300 PM EDT MON OCT 8 2012

FLZ021-022-035-081945-
COLUMBIA-GILCHRIST-SUWANNEE-
300 PM EDT MON OCT 8 2012

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHWESTERN
COLUMBIA...GILCHRIST AND SOUTHEASTERN SUWANNEE COUNTIES FOR STRONG
WINDS AND SMALL HAIL VALID UNTIL 345 PM EDT...

AT 300 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED 3 MILES SOUTHEAST OF BRANFORD...MOVING
NORTHEAST AT 10 MPH. THESE STRONG THUNDERSTORMS WILL AFFECT AREAS
AROUND BRANFORD...BELL...HILDRETH...ICHETUCKNEE SPRINGS STATE
PARK...FORT WHITE AND COLUMBIA THROUGH 345 PM EDT. HAIL UP TO THREE
QUARTER INCH IN DIAMETER AND GUSTY WINDS OF 40 TO 55 MPH CAN BE
EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3016 8266 2984 8265 2961 8276 2958 8296
      2963 8298 2964 8296 2974 8294 2976 8296
      2980 8293 2982 8294 2984 8290 2988 8288
      2989 8292 2995 8293 3001 8300
TIME...MOT...LOC 1900Z 247DEG 8KT 2994 8287

SHASHY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
326 PM EDT MON OCT 8 2012

GAZ150-164-082015-
CHARLTON-WARE-
326 PM EDT MON OCT 8 2012

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHEASTERN
WARE AND CENTRAL CHARLTON COUNTIES FOR STRONG WINDS AND SMALL HAIL
VALID UNTIL 415 PM EDT...

AT 326 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER WARE COUNTY...MOVING EAST AT 15
MPH. THIS STRONG THUNDERSTORM WILL IMPACT MAINLY RURAL AREAS OF THE
INDICATED COUNTIES THROUGH 415 PM EDT. HAIL UP TO THREE QUARTER INCH
IN DIAMETER AND GUSTY WINDS OF 40 TO 55 MPH CAN BE EXPECTED ALONG
WITH POSSIBLE MINOR DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3075 8204 3070 8203 3070 8204 3065 8205
      3062 8204 3058 8234 3073 8235 3090 8219
      3095 8204 3083 8203 3075 8203
TIME...MOT...LOC 1926Z 248DEG 12KT 3066 8226

SHASHY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
341 PM EDT MON OCT 8 2012

FLZ021-022-030-035-036-082030-
ALACHUA-COLUMBIA-GILCHRIST-SUWANNEE-UNION-
341 PM EDT MON OCT 8 2012

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NORTHWESTERN
ALACHUA...SOUTHERN COLUMBIA...GILCHRIST...SOUTHEASTERN SUWANNEE AND
SOUTHWESTERN UNION COUNTIES FOR STRONG WINDS AND FUNNEL CLOUDS VALID
UNTIL 430 PM EDT...

AT 340 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED ALONG A LINE EXTENDING FROM 6 MILES
NORTH OF ICHETUCKNEE SPRINGS STATE PARK TO 7 MILES SOUTH OF FORT
WHITE TO 6 MILES SOUTHWEST OF TRENTON...MOVING EAST AT 15 MPH. THIS
STRONG THUNDERSTORM WILL AFFECT AREAS AROUND HILDRETH...BELL...
ICHETUCKNEE SPRINGS STATE PARK...TRENTON...FORT WHITE...
COLUMBIA...HIGH SPRINGS...OLENO STATE PARK...NEWBERRY AND ALACHUA
THROUGH 430 PM EDT. GUSTY WINDS OF 40 TO 55 MPH CAN BE EXPECTED
ALONG WITH POSSIBLE MINOR DAMAGE. DOPPLER RADAR HAS INDICATED WEAK
ROTATION WITHIN THIS STORM. TORNADOES MAY DEVELOP WITH LITTLE OR NO
ADVANCE WARNING.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 2964 8296 2966 8296 2984 8285 3006 8291
      3010 8253 2979 8245 2953 8259 2953 8265
      2956 8266 2955 8276 2958 8278 2958 8296
      2963 8298
TIME...MOT...LOC 1940Z 278DEG 11KT 3004 8279 2983 8275
          2957 8290

SHASHY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
410 PM EDT MON OCT 8 2012

FLZ024-GAZ164>166-082100-
CHARLTON-COASTAL CAMDEN-INLAND CAMDEN-NASSAU-
410 PM EDT MON OCT 8 2012

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN
CHARLTON...SOUTHWESTERN CAMDEN AND NORTHWESTERN NASSAU COUNTIES FOR
STRONG WINDS AND SMALL HAIL VALID UNTIL 500 PM EDT...

AT 410 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 7 MILES WEST OF HILLIARD...MOVING
NORTHEAST AT 15 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS
AROUND HOMELAND...FOLKSTON...HILLIARD AND KINGS FERRY THROUGH 500 PM
EDT. HAIL UP TO THREE QUARTER INCH IN DIAMETER AND GUSTY WINDS OF 40
TO 50 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3097 8190 3097 8176 3074 8164 3062 8207
      3078 8215
TIME...MOT...LOC 2010Z 247DEG 12KT 3074 8201

SHASHY

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
416 PM EDT MON OCT 8 2012

GAZ152>154-164>166-082045-
BRANTLEY-CHARLTON-COASTAL CAMDEN-COASTAL GLYNN-INLAND CAMDEN-INLAND
GLYNN-
416 PM EDT MON OCT 8 2012

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR EASTERN
BRANTLEY...EXTREME NORTHEASTERN CHARLTON...NORTHERN CAMDEN AND
WESTERN GLYNN COUNTIES FOR STRONG WINDS AND FUNNEL CLOUDS VALID UNTIL
445 PM EDT...

AT 416 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 4 MILES SOUTHWEST
OF THALMANN TO 3 MILES SOUTHWEST OF TARBORO...MOVING EAST AT 20 MPH.
THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND
WAYNESVILLE...THALMANN...TARBORO...WAVERLY AND DOCK JUNCTION THROUGH
445 PM EDT. GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH
POSSIBLE MINOR DAMAGE. DOPPLER RADAR HAS INDICATED WEAK ROTATION
WITHIN THIS STORM. TORNADOES MAY DEVELOP WITH LITTLE OR NO ADVANCE
WARNING. HEAVY RAINFALL WILL PRODUCE PONDING OF WATER ON ROADWAYS AND
MINOR FLOODING OF LOW-LYING AREAS.

REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.

LAT...LON 3096 8157 3096 8192 3127 8178 3130 8170
      3131 8143
TIME...MOT...LOC 2016Z 263DEG 17KT 3124 8171 3098 8183

SHASHY