Alert archive / Georgia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 52, NWS Jacksonville, FL

March 8, 1998Jeff Davis County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Mar 8, 1998, 10:20 AM EST for Jeff Davis County, Georgia. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 8, 1998, 10:20 AM EST (15:20 UTC)
Expired: Mar 8, 1998, 11:05 AM EST
In force: 45 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Jeff Davis County, GA

The radar

The Moody AFB radar (KVAX), 108 km from the middle of the area, began a volume at 15:20 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.

What was reported inside it

Time	Report	Where	Remark
Mar 8, 10:45 AM EST	Thunderstorm Wind	Hazelhurst, GA	Large trees and power lines were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 8, 9:00 AM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 3.3 hours before the alert went out and 170 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: 35 J/kg
Mixed-layer CIN: -308 J/kg
Mixed-layer LCL: 771 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 239 m²/s²
0-3 km storm-relative helicity: 230 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 Mar 8, 9:55 AM EST, 25 minutes earlier.

Area forecast discussion, Mar 8, 9:55 AM EST, 25 minutes before

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In the hours before

Special weather statement, Mar 8, 5:34 AM EST, 4 hours 46 minutes before

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Special weather statement, Mar 8, 5:34 AM EST, 4 hours 46 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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Special weather statement, Mar 8, 8:48 AM EST, 1 hour 32 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
Mar 8, 9:10 AM EST	Severe Thunderstorm Warning	JAX	Coffee	50 min
Mar 8, 10:10 AM EST	Severe Thunderstorm Warning	JAX	Coffee	50 min
Mar 8, 10:54 AM EST	Severe Thunderstorm Warning	JAX	Appling	36 min
Mar 8, 11:12 AM EST	Severe Thunderstorm Warning	JAX	Atkinson	48 min
Mar 8, 2:48 PM EST	Severe Thunderstorm Warning	JAX	Atkinson, Coffee	62 min
Mar 8, 2:57 PM EST	Flash Flood Warning	JAX	Atkinson, Coffee	6 hr
Mar 8, 3:12 PM EST	Tornado Warning	JAX	Coffee	58 min
Mar 8, 3:56 PM EST	Tornado Warning	JAX	Appling	59 min
Mar 8, 6:58 PM EST	Severe Thunderstorm Warning	JAX	Atkinson, Clinch	62 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1998 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.