Alert archive / Georgia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 233, NWS Jacksonville, FL

June 29, 1998Pierce County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 29, 1998, 3:24 PM EDT for Pierce County, Georgia. It was in force for 61 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 29, 1998, 3:24 PM EDT (19:24 UTC)
Expired
Jun 29, 1998, 4:25 PM EDT
In force
61 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

County Pierce County, GA

The radar

The Moody AFB radar (KVAX), 91 km from the middle of the area, began a volume at 19:27 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, 7.4 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 12:00Z on 1998-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 770 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 12:00Z on 1998-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
770 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
1790 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
74 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 8:09 PM EDTSevere Thunderstorm WarningJAXHamilton61 min
Jun 29, 3:55 PM EDTSevere Thunderstorm WarningJAXMarion35 min
Jun 29, 4:37 PM EDTSevere Thunderstorm WarningJAXAlachua, Bradford, Union78 min
Jun 29, 5:18 PM EDTSevere Thunderstorm WarningJAXNassau62 min
Jun 29, 5:46 PM EDTSevere Thunderstorm WarningJAXPutnam64 min
Jun 29, 5:50 PM EDTSevere Thunderstorm WarningJAXDuval65 min
Jun 29, 5:58 PM EDTSevere Thunderstorm WarningJAXBaker62 min
Jun 29, 7:04 PM EDTSevere Thunderstorm WarningJAXColumbia61 min
Jun 29, 2:55 PM EDTSevere Thunderstorm WarningJAXWayne65 min
Jun 29, 4:49 PM EDTSevere Thunderstorm WarningJAXCamden, Glynn81 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1998Every severe thunderstorm warning in 1998

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.