Alert archive / Georgia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 1, NWS Jacksonville, FL

January 30, 20137 counties in Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jan 30, 2013, 7:39 PM EST for 7 counties in Georgia. It was in force for 36 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
Jan 30, 2013, 7:39 PM EST (00:39 UTC)
Expired
Jan 30, 2013, 8:15 PM EST
In force
36 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Appling County, GA, Atkinson County, GA, Bacon County, GA, Clinch County, GA, Coffee County, GA, Jeff Davis County, GA, Ware County, GA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jan 30, 5:45 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 0.7 hours before the alert went out and 134 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.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 00:00Z on 2013-01-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 00:00Z on 2013-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
77 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1554 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
378 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

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 Jan 30, 5:12 PM EST, 2 hours 27 minutes earlier.

Area forecast discussion, Jan 30, 5:12 PM EST, 2 hours 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
512 PM EST WED JAN 30 2013

.PUBLIC UPDATE...LINE OF SHOWERS WAS BARELY MOVING OVER SE GA FROM
JEFF DAVIS TO NW ATKINSON COUNTY. UPSTREAM OVER SW GA SEVERE
STORMS WITH ISOLATED ROTATING CELLS WERE NOTED. BETWEEN THE
SHOWERS OVER SE GA AND THE STRONGER CELLS UPSTREAM...STRONG WIND
GUSTS OUTSIDE OF CONVECTION CAUSED EXTENSIVE TREE DAMAGE AND SOME
STRUCTURAL DAMAGE IN WORTH COUNTY GA. STRONG NON-CONVECTIVE WIND
GUSTS WILL REMAIN A CONCERN AS WE GO INTO THE NIGHT DUE TO A STRONG
LOW LEVEL JET.

.FIRE WEATHER UPDATE...A QUICK UPDATE TO THE FIRE WEATHER FORECAST
TO RAISE A FIRE WEATHER WATCH FOR NORTHEAST FLORIDA ON THURSDAY.
UPDATED ERC VALUES CAME IN FOR TMRW AFTN IN THE 25-30 UNIT RANGE...AND
COMBINED WITH HIGH DISPERSIONS AND LOW RHS IN THE 20-25% RANGE WE ISSUED
A FIRE WEATHER WATCH.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  43  59  32  59 /  60  10   0   0
SSI  46  59  39  61 /  60  10   0   0
JAX  50  61  32  63 /  70  10   0   0
SGJ  51  61  39  63 /  60  10   0   0
GNV  49  62  30  65 /  70  10   0   0
OCF  52  63  32  67 /  60  10   0   0

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...WIND ADVISORY UNTIL 8 PM EST THIS EVENING FOR ALACHUA-BAKER-
     BRADFORD-COLUMBIA-GILCHRIST-HAMILTON-SUWANNEE-UNION.

     LAKE WIND ADVISORY UNTIL 8 PM EST THIS EVENING FOR CLAY-DUVAL-
     FLAGLER-MARION-NASSAU-PUTNAM-ST JOHNS.

     FIRE WEATHER WATCH FROM THURSDAY MORNING THROUGH THURSDAY
     EVENING FOR ALACHUA-BAKER-BRADFORD-CLAY-COLUMBIA-DUVAL-
     FLAGLER-GILCHRIST-HAMILTON-MARION-NASSAU-PUTNAM-ST JOHNS-
     SUWANNEE-UNION.

GA...WIND ADVISORY UNTIL 8 PM EST THIS EVENING FOR APPLING-ATKINSON-
     BACON-BRANTLEY-CHARLTON-CLINCH-COFFEE-ECHOLS-JEFF DAVIS-
     PIERCE-WARE-WAYNE.

     LAKE WIND ADVISORY UNTIL 8 PM EST THIS EVENING FOR COASTAL
     CAMDEN-COASTAL GLYNN-INLAND CAMDEN-INLAND GLYNN.

AM...SMALL CRAFT ADVISORY UNTIL 4 PM EST THURSDAY 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.

     SMALL CRAFT ADVISORY FOR WINDS UNTIL 11 AM EST THURSDAY FOR
     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.

&&

ENYEDI/SHASHY/SHULER/WALKER
Hazardous weather outlook, Jan 30, 6:08 PM EST, 1 hour 31 minutes before
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In the hours before

Local storm report, Jan 30, 7:11 PM EST, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
711 PM EST WED JAN 30 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0655 PM     NON-TSTM WND GST WAYCROSS                31.21N 82.36W
01/30/2013  M41 MPH          WARE               GA   AWOS

&&

AENYEDI
Special weather statement, Jan 30, 7:20 PM EST, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
720 PM EST WED JAN 30 2013

GAZ132-133-149-310055-
ATKINSON-COFFEE-JEFF DAVIS-
720 PM EST WED JAN 30 2013

...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR SOUTHWESTERN
JEFF DAVIS...WESTERN ATKINSON AND COFFEE COUNTIES FOR STRONG WINDS
VALID UNTIL 755 PM EST...

AT 719 PM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM 24 MILES NORTHWEST
OF AMBROSE TO 35 MILES WEST OF WILLACOOCHEE...MOVING EAST AT 50 MPH.
THESE STRONG THUNDERSTORMS WILL AFFECT AREAS AROUND WILLACOOCHEE...
SNIPESVILLE...PRIDGEN...DOUGLAS...DENTON...BROXTON AND AMBROSE
THROUGH 755 PM EST. GUSTY WINDS OF 40 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 100 AM EST THURSDAY MORNING
FOR NORTHERN FLORIDA AND SOUTHEAST GEORGIA.

LAT...LON 3184 8264 3118 8295 3118 8304 3124 8305
      3127 8304 3133 8307 3140 8314 3147 8316
      3149 8311 3157 8306 3161 8306 3167 8300
      3179 8300 3179 8287 3185 8279
TIME...MOT...LOC 0019Z 278DEG 45KT 3181 8329 3120 8357

SHASHY

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 30, 8:29 PM ESTSevere Thunderstorm WarningJAXHamilton46 min
Jan 30, 8:54 PM ESTSevere Thunderstorm WarningJAXSuwannee51 min
Jan 30, 9:17 PM ESTSpecial Weather StatementJAXColumbia, Suwannee43 min
Jan 30, 9:24 PM ESTSpecial Weather StatementJAXHamilton51 min
Jan 30, 10:08 PM ESTSpecial Weather StatementJAXAlachua, Baker, Bradford, Gilchrist, Union52 min
Jan 30, 10:23 PM ESTSpecial Marine WarningJAX3 hr
Jan 30, 10:42 PM ESTSpecial Weather StatementJAXNassau33 min
Jan 30, 10:46 PM ESTSpecial Weather StatementJAXAlachua, Bradford, Clay, Duval, Putnam44 min
Jan 30, 10:49 PM ESTSpecial Marine WarningJAX3 hr
Jan 30, 11:12 PM ESTSpecial Weather StatementJAXClay, Duval, Putnam48 min
Jan 31, 2:32 AM ESTFreeze WatchJAXBaker, Bradford, Gilchrist, Nassau, Suwannee, Union11 hr
Jan 31, 3:16 AM ESTFire Weather WatchJAXBaker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more23 hr
Jan 31, 3:16 AM ESTRed Flag WarningJAXBaker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more16 hr
Jan 31, 1:33 PM ESTFreeze WatchJAXBaker, Bradford, Gilchrist, Nassau, Suwannee, Union23 hr
Jan 31, 1:33 PM ESTFreeze WarningJAXBaker, Bradford, Gilchrist, Nassau, Suwannee, Union19 hr
Jan 30, 7:20 PM ESTSpecial Weather StatementJAXCoffee35 min
Jan 30, 8:14 PM ESTSevere Thunderstorm WarningJAXAppling, Atkinson, Bacon, Clinch, Coffee, Jeff Davis and 1 more46 min
Jan 30, 8:43 PM ESTSpecial Weather StatementJAXAppling, Pierce, Ware32 min
Jan 30, 8:52 PM ESTSevere Thunderstorm WarningJAXAppling, Bacon, Brantley, Charlton, Clinch, Pierce and 2 more38 min
Jan 30, 9:07 PM ESTSevere Thunderstorm WarningJAXCharlton, Clinch, Echols, Ware38 min
Jan 30, 9:26 PM ESTSevere Thunderstorm WarningJAXBrantley, Camden, Glynn, Wayne79 min
Jan 30, 9:39 PM ESTSpecial Weather StatementJAXCamden51 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2013Every severe thunderstorm warning in 2013

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.