Alert archive / Georgia / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 26, NWS Jacksonville, FL

April 2, 2009Coffee County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 2, 2009, 10:48 AM EDT for Coffee County, Georgia. It was in force for 42 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: Apr 2, 2009, 10:48 AM EDT (14:48 UTC)
Expired: Apr 2, 2009, 11:30 AM EDT
In force: 42 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

County Coffee 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
Apr 2, 8:31 AM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 2.8 hours before the alert went out and 160 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: 785 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 560 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 411 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

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 Apr 2, 9:28 AM EDT, 1 hour 20 minutes earlier.

Area forecast discussion, Apr 2, 9:28 AM EDT, 1 hour 20 minutes before

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Hazardous weather outlook, Apr 2, 8:39 AM EDT, 2 hours 9 minutes before

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In the hours before

Special weather statement, Apr 2, 5:01 AM EDT, 5 hours 47 minutes before

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Local storm report, Apr 2, 10:36 AM EDT, 12 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
Apr 1, 9:04 PM EDT	Areal Flood Advisory	JAX	Baker, Columbia, Hamilton, Suwannee	116 min
Apr 1, 9:08 PM EDT	Special Weather Statement	JAX	Hamilton	22 min
Apr 2, 5:01 AM EDT	Special Weather Statement	JAX	Hamilton	44 min
Apr 2, 5:12 AM EDT	Small Craft Advisory	JAX		31 hr
Apr 2, 10:00 AM EDT	River Flood Warning	JAX	Baker, Nassau	8 days
Apr 2, 3:02 PM EDT	Areal Flood Warning	JAX	Hamilton, Suwannee	4 hr
Apr 2, 3:20 PM EDT	Special Weather Statement	JAX	Gilchrist	40 min
Apr 2, 3:29 PM EDT	Areal Flood Warning	JAX	Baker, Columbia, Union	4 hr
Apr 2, 7:16 PM EDT	Areal Flood Warning	JAX	Columbia, Hamilton, Suwannee	15 hr
Apr 2, 7:18 PM EDT	Special Weather Statement	JAX	Columbia, Hamilton, Suwannee	42 min
Apr 2, 7:35 PM EDT	Severe Thunderstorm Warning	JAX	Columbia, Hamilton, Suwannee	55 min
Apr 2, 7:58 PM EDT	Special Weather Statement	JAX	Baker, Union	62 min
Apr 1, 10:45 PM EDT	Special Weather Statement	JAX	Camden	30 min
Apr 2, 3:27 AM EDT	Special Weather Statement	JAX	Clinch, Echols	48 min
Apr 2, 3:59 AM EDT	Areal Flood Advisory	JAX	Clinch, Echols, Ware	2 hr
Apr 2, 10:33 AM EDT	Areal Flood Warning	JAX	Appling, Atkinson, Bacon, Coffee, Jeff Davis, Ware	3 hr
Apr 2, 10:57 AM EDT	Special Weather Statement	JAX	Atkinson	48 min
Apr 2, 11:29 AM EDT	Special Weather Statement	JAX	Atkinson, Coffee, Jeff Davis	46 min
Apr 2, 11:58 AM EDT	Areal Flood Warning	JAX	Pierce, Wayne	92 min
Apr 2, 12:38 PM EDT	Special Weather Statement	JAX	Bacon	52 min
Apr 2, 1:23 PM EDT	Areal Flood Warning	JAX	Appling, Atkinson, Bacon, Clinch, Coffee, Echols and 4 more	6 hr
Apr 2, 3:48 PM EDT	Areal Flood Advisory	JAX	Camden, Glynn	4 hr
Apr 2, 3:53 PM EDT	Special Weather Statement	JAX	Glynn	67 min
Apr 2, 7:53 PM EDT	Special Weather Statement	JAX	Atkinson, Bacon, Coffee	52 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2009 Every severe thunderstorm warning in 2009

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.