Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 135, NWS Jacksonville, FL

June 12, 20114 counties in Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 2011, 9:26 PM EDT for 4 counties in Georgia. It was in force for 34 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 12, 2011, 9:26 PM EDT (01:26 UTC)
Expired: Jun 12, 2011, 10:00 PM EDT
In force: 34 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Atkinson County, GA, Clinch County, GA, Coffee County, GA, Ware County, GA

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 1.4 hours before the alert went out and 176 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: 1341 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1360 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 90 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 12, 9:13 PM EDT, 13 minutes earlier.

Area forecast discussion, Jun 12, 9:13 PM EDT, 13 minutes before

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Hazardous weather outlook, Jun 12, 9:10 PM EDT, 16 minutes before

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In the hours before

Special weather statement, Jun 12, 7:09 PM EDT, 2 hours 17 minutes before

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Special weather statement, Jun 12, 7:14 PM EDT, 2 hours 12 minutes before

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Special weather statement, Jun 12, 7:36 PM EDT, 1 hour 50 minutes before

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Special weather statement, Jun 12, 7:41 PM EDT, 1 hour 45 minutes before

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Special weather statement, Jun 12, 7:50 PM EDT, 1 hour 36 minutes before

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Special weather statement, Jun 12, 9:10 PM EDT, 16 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 13, 5:12 AM EDT	Fire Weather Watch	JAX	Baker, Bradford, Gilchrist, Suwannee, Union	23 hr
Jun 13, 9:37 AM EDT	Red Flag Warning	JAX	Suwannee	8 hr
Jun 13, 2:22 PM EDT	Special Weather Statement	JAX	Marion	38 min
Jun 13, 2:49 PM EDT	Special Weather Statement	JAX	Marion	41 min
Jun 13, 2:53 PM EDT	Special Weather Statement	JAX	Nassau	52 min
Jun 13, 3:14 PM EDT	Special Weather Statement	JAX	Marion	46 min
Jun 13, 3:47 PM EDT	Special Weather Statement	JAX	Saint Johns	43 min
Jun 13, 4:00 PM EDT	Special Weather Statement	JAX	Alachua	45 min
Jun 13, 4:04 PM EDT	Areal Flood Advisory	JAX	Clay, Putnam	116 min
Jun 13, 4:16 PM EDT	Special Weather Statement	JAX	Suwannee	44 min
Jun 13, 4:23 PM EDT	Areal Flood Advisory	JAX	Alachua	2 hr
Jun 13, 4:26 PM EDT	Special Weather Statement	JAX	Duval	49 min
Jun 13, 4:28 PM EDT	Special Weather Statement	JAX	Flagler	47 min
Jun 13, 4:36 PM EDT	Special Weather Statement	JAX	Flagler	39 min
Jun 13, 4:40 PM EDT	Special Marine Warning	JAX		95 min
Jun 13, 4:46 PM EDT	Severe Thunderstorm Warning	JAX	Flagler	44 min
Jun 13, 4:49 PM EDT	Special Marine Warning	JAX		56 min
Jun 13, 4:50 PM EDT	Special Weather Statement	JAX	Union	40 min
Jun 13, 5:00 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Saint Johns	45 min
Jun 13, 5:08 PM EDT	Special Weather Statement	JAX	Suwannee	52 min
Jun 13, 5:15 PM EDT	Special Weather Statement	JAX	Duval	45 min
Jun 13, 5:28 PM EDT	Special Weather Statement	JAX	Flagler	47 min
Jun 13, 5:33 PM EDT	Special Weather Statement	JAX	Clay	42 min
Jun 13, 5:36 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Columbia, Union	39 min
Jun 13, 5:57 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford, Columbia, Union	2 hr
Jun 13, 6:06 PM EDT	Special Weather Statement	JAX	Alachua, Gilchrist	39 min
Jun 13, 6:12 PM EDT	Special Weather Statement	JAX	Duval	48 min
Jun 13, 6:19 PM EDT	Special Weather Statement	JAX	Saint Johns	41 min
Jun 13, 6:25 PM EDT	Special Marine Warning	JAX		95 min
Jun 13, 6:31 PM EDT	Special Weather Statement	JAX	Nassau	44 min
Jun 13, 6:36 PM EDT	Special Weather Statement	JAX	Hamilton	39 min
Jun 13, 6:55 PM EDT	Special Weather Statement	JAX	Saint Johns	50 min
Jun 13, 7:16 PM EDT	Special Weather Statement	JAX	Nassau	44 min
Jun 13, 7:52 PM EDT	Special Weather Statement	JAX	Duval	38 min
Jun 12, 9:10 PM EDT	Special Weather Statement	JAX	Atkinson	50 min
Jun 12, 9:58 PM EDT	Special Weather Statement	JAX	Ware	32 min
Jun 12, 10:17 PM EDT	Special Weather Statement	JAX	Clinch, Echols	43 min
Jun 13, 3:33 PM EDT	Special Weather Statement	JAX	Glynn	27 min
Jun 13, 7:44 PM EDT	Special Weather Statement	JAX	Wayne	46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011 Every severe thunderstorm warning in 2011

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.