Alert archive / Georgia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 119, NWS Jacksonville, FL

August 14, 2013Appling County, Coffee County, Jeff Davis County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Aug 14, 2013, 6:25 PM EDT for Appling County, Coffee County, Jeff Davis County, Georgia. It was in force for 50 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: Aug 14, 2013, 6:25 PM EDT (22:25 UTC)
Expired: Aug 14, 2013, 7:15 PM EDT
In force: 50 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Appling County, GA, Coffee County, GA, Jeff Davis County, GA

The radar

The Moody AFB radar (KVAX), 98 km from the middle of the area, began a volume at 22:29 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, 10.4 hours before the alert went out and 158 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: 1164 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 907 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: -35 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 Aug 14, 2:12 PM EDT, 4 hours 13 minutes earlier.

Area forecast discussion, Aug 14, 2:12 PM EDT, 4 hours 13 minutes before

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Hazardous weather outlook, Aug 14, 1:30 PM EDT, 4 hours 55 minutes before

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In the hours before

Special weather statement, Aug 14, 5:31 PM EDT, 54 minutes before

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Special weather statement, Aug 14, 5:47 PM EDT, 38 minutes before

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Special weather statement, Aug 14, 5:51 PM EDT, 34 minutes before

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Special weather statement, Aug 14, 6:12 PM EDT, 13 minutes before

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Special weather statement, Aug 14, 6:16 PM EDT, 9 minutes before

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Special weather statement, Aug 14, 6:23 PM EDT, 2 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
Aug 14, 5:31 PM EDT	Special Weather Statement	JAX	Flagler	44 min
Aug 14, 6:02 PM EDT	Areal Flood Advisory	JAX	Flagler, Putnam	118 min
Aug 14, 6:12 PM EDT	Special Weather Statement	JAX	Flagler, Putnam	48 min
Aug 14, 6:47 PM EDT	Special Weather Statement	JAX	Flagler, Putnam, Saint Johns	43 min
Aug 14, 7:15 PM EDT	Areal Flood Advisory	JAX	Clay, Putnam, Saint Johns	2 hr
Aug 14, 7:17 PM EDT	Special Weather Statement	JAX	Putnam	43 min
Aug 14, 7:28 PM EDT	Special Weather Statement	JAX	Saint Johns	47 min
Aug 14, 7:33 PM EDT	Areal Flood Advisory	JAX	Clay, Duval, Saint Johns	117 min
Aug 14, 7:51 PM EDT	Special Weather Statement	JAX	Duval	39 min
Aug 14, 7:57 PM EDT	Areal Flood Warning	JAX	Duval	2 hr
Aug 14, 4:09 PM EDT	Special Weather Statement	JAX	Lanier	51 min
Aug 14, 4:37 PM EDT	Special Weather Statement	JAX	Clinch	38 min
Aug 14, 5:11 PM EDT	Special Weather Statement	JAX	Ware	34 min
Aug 14, 5:47 PM EDT	Special Weather Statement	JAX	Brantley	43 min
Aug 14, 5:51 PM EDT	Special Weather Statement	JAX	Jeff Davis	24 min
Aug 14, 6:16 PM EDT	Special Weather Statement	JAX	Jeff Davis	29 min
Aug 14, 6:23 PM EDT	Special Weather Statement	JAX	Brantley	52 min
Aug 14, 6:40 PM EDT	Severe Thunderstorm Warning	JAX	Brantley, Glynn	50 min
Aug 14, 6:53 PM EDT	Special Weather Statement	JAX	Appling	52 min
Aug 14, 7:09 PM EDT	Special Weather Statement	JAX	Glynn	36 min
Aug 14, 7:13 PM EDT	Special Weather Statement	JAX	Wayne	32 min
Aug 14, 7:29 PM EDT	Special Weather Statement	JAX	Glynn	46 min
Aug 14, 7:40 PM EDT	Special Weather Statement	JAX	Appling	35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2013 Every severe thunderstorm warning in 2013

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.