Alert archive / Georgia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 226, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Dec 17, 2012, 2:25 PM EST for 5 counties in Georgia. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 17, 2012, 2:25 PM EST (19:25 UTC)
- Expired
- Dec 17, 2012, 3:03 PM EST
- In force
- 38 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Appling County, GA, Bacon County, GA, Coffee County, GA, Jeff Davis County, GA, Wayne County, GA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 17, 1:30 PM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 7.4 hours before the alert went out and 145 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Dec 17, 10:10 AM EST, 4 hours 15 minutes earlier.
Area forecast discussion, Dec 17, 10:10 AM EST, 4 hours 15 minutes before
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</html>Hazardous weather outlook, Dec 17, 2:00 PM EST, 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 200 PM EST MON DEC 17 2012 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-181900- 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- 200 PM EST MON DEC 17 2012 ...SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST GEORGIA AND EXTREME NORTHEAST FLORIDA THIS AFTERNOON AND EVENING... ...ISOLATED STRONG STORMS POSSIBLE ACROSS THE REMAINDER OF THE AREA THIS AFTERNOON AND EVENING... ...SMALL CRAFT ADVISORY FOR WINDS ACROSS THE OUTER WATERS LATE TONIGHT AND TUESDAY... ...TORNADO WATCH IN EFFECT THIS AFTERNOON FOR SOUTHEAST GEORGIA AND PORTIONS OF NORTHEAST FLORIDA... THIS OUTLOOK IS FOR NORTHEAST FLORIDA...SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT... A TORNADO WATCH IS IN EFFECT FOR ALL OF SOUTHEAST GEORGIA AND THE SUWANNEE VALLEY REGION OF NORTHEAST FLORIDA. A LINE OF SHOWERS AND THUNDERSTORMS WILL ACCOMPANY A COLD FRONT THROUGH SOUTHEAST GEORGIA AND PORTIONS OF NORTHEAST FLORIDA THIS AFTERNOON. THERE IS A SLIGHT RISK OF SEVERE STORMS EXTENDING FROM ALL OF SOUTHEAST GEORGIA TO NEAR I-10 IN NORTHEAST FLORIDA FOR THIS AFTERNOON AND EVENING. THE MAIN SEVERE THREAT WILL BE DAMAGING WINDS...HOWEVER ISOLATED TORNADOES ARE ALSO POSSIBLE. ISOLATED STRONG STORMS WILL BE POSSIBLE ACROSS THE REMAINDER OF THE AREA. IN THE WAKE OF THE FRONT LATE TONIGHT...SMALL CRAFT ADVISORY WIND CONDITIONS WILL PREVAIL ACROSS THE OUTER COASTAL WATERS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... SMALL CRAFT ADVISORY WIND CONDITIONS WILL CONTINUE ACROSS THE OUTER COASTAL WATERS TUESDAY MORNING. SMALL CRAFT ADVISORY CRITERIA MAY BE POSSIBLE ONCE AGAIN THURSDAY NIGHT AND FRIDAY ASSOCIATED WITH ANOTHER FRONTAL PASSAGE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED THIS AFTERNOON. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. JDS
In the hours before
Special weather statement, Dec 17, 2:01 PM EST, 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
201 PM EST MON DEC 17 2012
GAZ132-133-172000-
COFFEE-JEFF DAVIS-
201 PM EST MON DEC 17 2012
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR JEFF DAVIS AND
COFFEE COUNTIES FOR STRONG WINDS VALID UNTIL 300 PM EST...
AT 200 PM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 14 MILES NORTHWEST
OF HAZLEHURST TO 22 MILES SOUTHWEST OF AMBROSE...MOVING EAST AT 45
MPH. THESE STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS AROUND
PRIDGEN...AMBROSE...SNIPESVILLE...BROXTON...HAZLEHURST...DENTON...
WEST GREEN AND DOUGLAS THROUGH 300 PM EST. GUSTY WINDS OF 45 TO 55
MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR WIND DAMAGE.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST MONDAY EVENING FOR
NORTHEASTERN FLORIDA AND SOUTHEAST GEORGIA. TORNADOES CAN DEVELOP
QUICKLY WITH LITTLE OR NO ADVANCED WARNING.
LAT...LON 3197 8243 3174 8261 3142 8272 3142 8314
3147 8316 3149 8311 3157 8306 3161 8306
3167 8300 3179 8299 3179 8287 3193 8268
3192 8264 3197 8254 3195 8250 3198 8249
TIME...MOT...LOC 1900Z 262DEG 40KT 3200 8275 3144 8330
WOLFThe office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 3:45 AM EST | Small Craft Advisory for Winds | JAX | 36 hr | |
| Dec 17, 3:54 PM EST | Special Weather Statement | JAX | Hamilton | 51 min |
| Dec 17, 4:18 PM EST | Special Marine Warning | JAX | 87 min | |
| Dec 17, 4:40 PM EST | Special Weather Statement | JAX | Hamilton | 50 min |
| Dec 17, 5:06 PM EST | Special Weather Statement | JAX | Bradford, Union | 39 min |
| Dec 17, 5:26 PM EST | Special Weather Statement | JAX | Alachua, Baker, Bradford, Clay, Columbia, Duval and 4 more | 49 min |
| Dec 17, 5:28 PM EST | Special Marine Warning | JAX | 70 min | |
| Dec 17, 6:10 PM EST | Special Weather Statement | JAX | Alachua, Baker, Bradford, Clay, Columbia, Duval and 3 more | 50 min |
| Dec 17, 6:14 PM EST | Special Marine Warning | JAX | 110 min | |
| Dec 17, 6:59 PM EST | Special Weather Statement | JAX | Alachua, Bradford, Clay, Duval, Gilchrist, Union | 46 min |
| Dec 17, 2:01 PM EST | Special Weather Statement | JAX | Coffee, Jeff Davis | 59 min |
| Dec 17, 2:33 PM EST | Special Weather Statement | JAX | Atkinson, Bacon, Coffee, Pierce | 42 min |
| Dec 17, 3:05 PM EST | Special Weather Statement | JAX | Appling | 40 min |
| Dec 17, 3:10 PM EST | Severe Thunderstorm Warning | JAX | Appling, Wayne | 28 min |
| Dec 17, 3:12 PM EST | Special Weather Statement | JAX | Clinch, Pierce, Ware | 48 min |
| Dec 17, 3:41 PM EST | Special Weather Statement | JAX | Glynn, Wayne | 49 min |
| Dec 17, 4:28 PM EST | Special Weather Statement | JAX | Camden, Glynn | 47 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.