Alert archive / Georgia / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 225, NWS Jacksonville, FL

November 1, 1997Clinch County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Nov 1, 1997, 10:37 PM EST for Clinch County, Georgia. It was in force for 63 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
Nov 1, 1997, 10:37 PM EST (03:37 UTC)
Expired
Nov 1, 1997, 11:40 PM EST
In force
63 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

County Clinch County, GA

The watch it was issued in

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

IssuedProductOfficeLasted
Nov 1, 7:30 PM ESTTornado WatchSPC5 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 3.6 hours before the alert went out and 107 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 1997-11-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1109 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, Jacksonville, FL at 00:00Z on 1997-11-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.1939587897117Sfc1 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
1109 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1077 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.1

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 Nov 1, 7:04 PM EST, 3 hours 33 minutes earlier.

Area forecast discussion, Nov 1, 7:04 PM EST, 3 hours 33 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
700 PM EST SAT NOV 01 1997

WILL ISSUE THIS AFD ALITTLE EARLIER THAN USUAL DUE TO ADVANCING SVR
WX. CURRENTLY FEW PREFRONTAL STORMS CLOSE TO...BUT NOT IN...OUR
WESTERNMOST CWA. SHOULD'T BE LONG BEFORE A FEW CELLS ADVECT INTO OUR
AREA.  FNT TO PROGRESS EWD THRU THE NGT WITH PROGS PLACING IT NR
A SAV-JAX- BIG BEND AREA ARND SUNRISE SUNDAY WITH MDL TIME XSECTIONS
QUICKLY BRINGING IN MUCH DRIER AIR FOLLOWING PASSAGE.

MOBBS

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 1, 11:34 PM ESTSevere Thunderstorm WarningJAXCharlton61 min
Nov 1, 11:51 PM ESTTornado WarningJAXCharlton64 min
Nov 2, 12:30 AM ESTSevere Thunderstorm WarningJAXCamden65 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1997Every severe thunderstorm warning in 1997

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.