Alert archive / Georgia / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 171, NWS Jacksonville, FL

June 12, 2003Brantley County, Camden County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 2003, 5:22 PM EDT for Brantley County, Camden County, 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
Jun 12, 2003, 5:22 PM EDT (21:22 UTC)
Expired
Jun 12, 2003, 6:00 PM EDT
In force
38 min
Issued by
NWS Jacksonville, FL
Area
Counties, with a storm outline in the text

Counties Brantley County, GA, Camden County, GA

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.4 hours before the alert went out and 266 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, Charleston AFB, SC at 12:00Z on 2003-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2280 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2003-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939Sfc1 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
2280 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
586 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
-8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 12, 2:55 PM EDT, 2 hours 27 minutes earlier.

Area forecast discussion, Jun 12, 2:55 PM EDT, 2 hours 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
255 PM EDT THU JUN 12 2003

MID/UPPER SHORT WAVE IS ENHANCING DEVELOPMENT OF CONVECTION ACROSS
NE FLORIDA EARLY THIS AFTERNOON. QUITE A STRONG CLUSTER IS MOVING
THROUGH THE GAINESVILLE/SUWANNEE VALLEY AREA. LO/MID LEVEL SWLY FLOW
COMBINED WITH ABUNDANT MOISTURE AND INSTABILITY WILL MAKE THIS A
VERY ACTIVE EVENING FOR STORMS. WILL GO WITH LIKELY POPS FIRST
PERIOD.

UPPER TROUGH WILL PERSIST ACROSS THE SOUTHEAST U.S. INTO THE
WEEKEND WITH PERIODIC DISTURBANCES MOVING THROUGH THE CWA.
INCREASING CLOUDS ON FRIDAY WILL AND LESS INSTABILITY WILL LESSEN
THE CHANCE FOR STRONG STORMS. THE CAPE IS EXPECTED TO DROP BELOW
1000 J/KG ON FRIDAY WHEREAS ITS ABOVE 3500 J/KG THIS AFTN. MORE OF
THE SAME ON SATURDAY AND WILL GO WITH 50% POPS OVER MOST OF THE
AREA ON FRI/SAT AFTERNOONS.

MARINE...BUOY 41012 HAS CONSISTENTLY REPORTED 10-15 KT WITH 3 FT
SEAS. SOUTH TO SW WINDS WILL CONTINUE THROUGH THE WEEKEND.

.PRELIMINARY POINT TEMPS/POPS...

AMG 72 89 71 89 / 50 50 40 40
SSI 75 86 76 87 / 50 50 40 40
JAX 73 89 72 90 / 60 50 40 40
SGJ 74 86 73 86 / 60 50 40 40
GNV 72 90 71 91 / 60 50 40 40
OCF 72 90 71 91 / 60 50 40 40

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

MKT/EZ
Hazardous weather outlook, Jun 12, 12:21 PM EDT, 5 hours 1 minute before
FLZ020>025-030>033-035>038-040-GAZ132>136-149>154-162>166-122130-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1221 PM EDT THU JUN 12 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA AND SOUTHEAST
GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...
SCATTERED THUNDERSTORMS WILL FORM ALONG THE SEABREEZE FRONTS EARLY
THEN INCREASE IN COVERAGE ACROSS INLAND AREAS BY LATE AFTERNOON.
STORM MOTION WILL BE TO THE NORTHEAST AT 10 TO 15 MPH. THESE
STORMS WILL DRIFT TOWARD THE EAST COAST THIS EVENING. ISOLATED PULSE
SEVERE STORMS COULD DEVELOP AND THE PRIMARY HAZARDS WOULD BE FREQUENT
LIGHTNING...DAMAGING DOWNBURST WINDS AND SMALL HAIL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...
SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP EACH DAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT REQUESTED AT THIS TIME...HOWEVER STORM
SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED FOR
YOUR AREA.

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

TRABERT

In the hours before

Special weather statement, Jun 12, 4:34 PM EDT, 48 minutes before
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Special weather statement, Jun 12, 4:46 PM EDT, 36 minutes before
FLZ038-122130-

SIGNIFICANT WEATHER ALERT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
446 PM EDT THU JUN 12 2003

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR WESTERN FLAGLER
COUNTY FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL
530 PM EDT...

AT 446 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED OVER WESTERN FLAGLER
COUNTY...OR ABOUT 15 MILES SOUTHEAST OF PALATKA...MOVING NORTHEAST
AT 15 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT
AREAS AROUND ANDALUSIA THROUGH 530 PM EDT. HAIL UP TO ONE HALF INCH
IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF
45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

DEESE
Special weather statement, Jun 12, 4:46 PM EDT, 36 minutes before
FLZ038-122130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
446 PM EDT THU JUN 12 2003

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR WESTERN FLAGLER
COUNTY FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL
530 PM EDT...

AT 446 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED OVER WESTERN FLAGLER
COUNTY...OR ABOUT 15 MILES SOUTHEAST OF PALATKA...MOVING NORTHEAST
AT 15 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT
AREAS AROUND ANDALUSIA THROUGH 530 PM EDT. HAIL UP TO ONE HALF INCH
IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF
45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

DEESE
Special weather statement, Jun 12, 4:58 PM EDT, 24 minutes before
GAZ165-122145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
458 PM EDT THU JUN 12 2003

...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR WESTERN CAMDEN
COUNTY FOR SMALL HAIL AND GUSTY WINDS OF 45 TO 55 MPH VALID UNTIL
545 PM EDT...

AT 458 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 15 MILES SOUTHWEST OF
WOODBINE...OR ABOUT 15 MILES WEST OF KINGSLAND...MOVING NORTH AT 10
MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT AREAS
AROUND WOODBINE THROUGH 545 PM EDT. HAIL UP TO ONE HALF INCH IN
DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45
TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

DEESE
Special weather statement, Jun 12, 5:00 PM EDT, 22 minutes before
FLZ032-033-037-122130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
500 PM EDT THU JUN 12 2003

...SIGNIFICANT WEATHER ALERT FOR PUTNAM COUNTY...

AT 500 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 15 MILES SOUTHWEST OF
PICOLATA...OR ABOUT 12 MILES NORTHWEST OF PALATKA...MOVING NORTHEAST
AT 25 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT
AREAS AROUND PICOLATA...GREEN COVE SPRINGS...SWITZERLAND AND FRUIT
COVE THROUGH 530 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

TRABERT
Special weather statement, Jun 12, 5:00 PM EDT, 22 minutes before
FLZ032-033-037-122130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
500 PM EDT THU JUN 12 2003

...SIGNIFICANT WEATHER ALERT FOR PUTNAM...CLAY AND ST JOHNS
COUNTIES...

AT 500 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 15 MILES SOUTHWEST OF
PICOLATA...OR ABOUT 12 MILES NORTHWEST OF PALATKA...MOVING NORTHEAST
AT 25 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL ALSO AFFECT
AREAS AROUND PICOLATA...GREEN COVE SPRINGS...SWITZERLAND AND FRUIT
COVE THROUGH 530 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH
CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.

TRABERT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 1:36 PM EDTSevere Thunderstorm WarningJAXAlachua, Columbia39 min
Jun 12, 2:29 PM EDTSevere Thunderstorm WarningJAXColumbia46 min
Jun 12, 3:39 PM EDTSevere Thunderstorm WarningJAXDuval51 min
Jun 12, 3:42 PM EDTSpecial Marine WarningJAX63 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2003Every severe thunderstorm warning in 2003

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.