Alert archive / Georgia / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 145, NWS Jacksonville, FL

June 21, 2001Camden County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 21, 2001, 6:10 PM EDT for Camden County, Georgia. It was in force for 50 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, 6:10 PM EDT (22:10 UTC)
Expired: Jun 21, 2001, 7:00 PM EDT
In force: 50 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Camden County, GA

The radar

The Jacksonville radar (KJAX), 49 km from the middle of the area, began a volume at 22:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 10.2 hours before the alert went out and 47 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, 1:45 PM EDT, 4 hours 25 minutes earlier.

Area forecast discussion, Jun 21, 1:45 PM EDT, 4 hours 25 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
145 PM EDT THU JUN 21 2001

CURRENT...WEAK SFC RIDGE OVER THE AREA. 2 RATHER VIGOROUS...BUT
SMALL...SHORT WAVES AFFECTING THE GA CWA WITH SCATTERED STRONG
TSTM. W COAST SEABREEZE ACTIVITY ALSO GOT AN EARLY START. EVIDENCE
OF AN E COAST SEABREEZE JUST SHOWING UP AT SAUF1 AND KSGJ...ALTHO
MOST E COAST SITES STILL REPORTING A LIGHT W WIND.

MODELS...MODELS CONTINUE TO SHOW TROF AXIS APPROACHING THE AREA FROM
THE W DURING THE FCST PD. THIS WILL GRADUALLY INCREASE DYNAMICS...
ESPECIALLY OVER NW PORTION OF AREA ON SAT. THIS WILL ALSO TAP INTO
MORE ABUNDANT GULF MOISTURE.

PUBLIC...SCATTERED CONVECTION WILL CONTINUE IN GA WITH SHORT
WAVES...ALTHO MESO-ETA SHOWS THEM DAMPENING OUT THIS EVENING.
CONVECTIVE PATTERN IN FL WILL BE SIMILAR TO YESTERDAY EVENING...WITH
ACTIVITY FOCUSING OVER INTERIOR AREAS. HOWEVER...WITH A LITTLE MORE
WESTERLY FLOW ALOFT...STORMS WILL AGAIN APPROACH ATLC COASTAL
COUNTIES BEFORE WEAKENING. GRADUAL INCREASE IN POPS INDICATED BY
PREVIOUS FCSTR LOOKS ON TRACK...AND MAV GUIDANCE SEEMS TO HAVE THE
BEST NUMBERS IN MOST LOCALES. TEMPS NEAR CLIMO...WITH SLIGHTLY LOWER
HIGHS ON SAT DUE TO EARLIER CONVECTION INITIATION AND POSSIBLY MORE
CLOUD COVER.

EXTENDED...APPROACHING SFC FRONT STALLS OVER NW GA CWA...THEN
DISSIPATES BY MON...SO CONTINUE WITH CURRENT EXTENDED TREND OVER
MOST ZONES.

MARINE...WILL INCREASE SAT WINDS SLIGHTLY OVER PRESENT PACKAGE AHEAD
OF FRONTAL SYSTEM. OTHERWISE...LITTLE CHANGE.

PRELIM
AMG 69/89/70/86 3536
SSI 72/88/72/86 3546
JAX 71/91/71/89 3546
GNV 70/90/70/87 4536

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

PUBLIC/MARINE...CARROLL
AVIATION/FIRE...SCOTT

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, 10:43 AM EDT	Severe Thunderstorm Warning	JAX	Bacon, Coffee	47 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

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; radar from the NEXRAD Level II archive.