Alert archive / Georgia / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 266, NWS Jacksonville, FL

June 29, 2008Clinch County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 29, 2008, 1:56 PM EDT for Clinch County, Georgia. It was in force for 49 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, 2008, 1:56 PM EDT (17:56 UTC)
Expired: Jun 29, 2008, 2:45 PM EDT
In force: 49 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Clinch County, GA

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 29, 1:12 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.9 hours before the alert went out and 163 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: 2230 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 748 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 29, 9:05 AM EDT, 4 hours 51 minutes earlier.

Area forecast discussion, Jun 29, 9:05 AM EDT, 4 hours 51 minutes before

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Hazardous weather outlook, Jun 29, 1:22 PM EDT, 34 minutes before

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In the hours before

Special weather statement, Jun 29, 12:37 PM EDT, 1 hour 19 minutes before

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Special weather statement, Jun 29, 1:15 PM EDT, 41 minutes before

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Special weather statement, Jun 29, 1:33 PM EDT, 23 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 29, 2:29 PM EDT	Special Marine Warning	JAX		91 min
Jun 29, 3:05 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Saint Johns	40 min
Jun 29, 4:03 PM EDT	Special Marine Warning	JAX		117 min
Jun 29, 7:18 PM EDT	Severe Thunderstorm Warning	JAX	Marion	57 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2008 Every severe thunderstorm warning in 2008

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.