Alert archive / Georgia / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 134, NWS Jacksonville, FL

June 21, 2001Bacon County, Coffee County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 21, 2001, 10:43 AM EDT for Bacon County, Coffee County, Georgia. It was in force for 47 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 21, 2001, 10:43 AM EDT (14:43 UTC)
Expired: Jun 21, 2001, 11:30 AM EDT
In force: 47 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Bacon County, GA, Coffee County, GA

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 2.7 hours before the alert went out and 148 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 984 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 975 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 21, 9:20 AM EDT, 1 hour 23 minutes earlier.

Area forecast discussion, Jun 21, 9:20 AM EDT, 1 hour 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
920 AM EDT THU JUN 21 2001

CURRENTLY...SHOWERS AND TSTMS GETTING AN EARLY START ACROSS N GA
ZONES. THIS IS IN ASSOCIATION WITH A FAIRLY POTENT SHORTWAVE THAT IS
PICKED UP WELL BY THE MESO-ETA. EVIDENCE OF THIS IS CONVECTION AT
SUCH AN EARLY HOUR.

PUBLIC...WILL AMEND ZONES TO INDICATE BETTER POPS IN GA...AS WELL AS
REMOVE AFTN WORDING. ACTIVITY MAY BE SUPPRESSED SOMEWHAT BY NEG VORT
ADVECTION OVER N FL. WILL LIKELY SEE SIMILAR OR LESS ACTIVITY IN FL
TODAY...WITH STORMS FORMING LATER IN THE DAY. IN ADDITION... KJAX
12Z SOUNDING IS DRIER THAN YESTERDAY (1.4 PWAT) AND SLIGHTLY MORE
STABLE. HOWEVER... STORMS THAT DO FORM WILL HAVE A GREATER POTENTIAL
FOR WIND GUSTS AND HAIL (WB ZERO HEIGHT IS JUST BELOW 10K). SLIGHT
INCREASE IN S FLOW ALOFT WILL VERY GRADUALLY INCREASE MOISTURE THRU
THE DAY.

MARINE...WILL INDICATE SEABREEZE CIRCULATION IN CWF. OTHERWISE...
LITTLE CHANGE.

.JAX...
FL...NONE.
GA...NONE.

CARROLL

In the hours before

Special weather statement, Jun 21, 6:00 AM EDT, 4 hours 43 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:13 PM EDT	Severe Thunderstorm Warning	JAX	Alachua	32 min
Jun 20, 9:56 PM EDT	Severe Thunderstorm Warning	JAX	Baker	34 min
Jun 21, 2:49 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion	56 min
Jun 21, 4:29 PM EDT	Severe Thunderstorm Warning	JAX	Nassau	46 min
Jun 21, 4:53 PM EDT	Severe Thunderstorm Warning	JAX	Duval	52 min
Jun 21, 5:01 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	44 min
Jun 21, 5:13 PM EDT	Severe Thunderstorm Warning	JAX	Flagler	47 min
Jun 21, 5:43 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	62 min
Jun 21, 12:57 PM EDT	Severe Thunderstorm Warning	JAX	Brantley	48 min
Jun 21, 4:24 PM EDT	Severe Thunderstorm Warning	JAX	Ware	36 min
Jun 21, 4:38 PM EDT	Severe Thunderstorm Warning	JAX	Charlton	52 min
Jun 21, 5:29 PM EDT	Severe Thunderstorm Warning	JAX	Charlton	46 min
Jun 21, 6:10 PM EDT	Severe Thunderstorm Warning	JAX	Camden	50 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2001 Every severe thunderstorm warning in 2001

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.