Alert archive / Georgia / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 9, NWS Jacksonville, FL

March 1, 2009Clinch County, Echols County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Mar 1, 2009, 2:32 AM EST for Clinch County, Echols County, Georgia. It was in force for 28 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: Mar 1, 2009, 2:32 AM EST (07:32 UTC)
Expired: Mar 1, 2009, 3:00 AM EST
In force: 28 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Clinch County, GA, Echols 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
Feb 28, 6:43 PM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 7.5 hours before the alert went out and 111 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1572 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 244 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 Feb 28, 9:42 PM EST, 4 hours 50 minutes earlier.

Area forecast discussion, Feb 28, 9:42 PM EST, 4 hours 50 minutes before

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Hazardous weather outlook, Feb 28, 8:08 PM EST, 6 hours 24 minutes before

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In the hours before

Special weather statement, Mar 1, 1:26 AM EST, 1 hour 6 minutes before

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Special weather statement, Mar 1, 1:28 AM EST, 1 hour 4 minutes before

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Special weather statement, Mar 1, 1:41 AM EST, 51 minutes before

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Special weather statement, Mar 1, 1:58 AM EST, 34 minutes before

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Special weather statement, Mar 1, 1:59 AM EST, 33 minutes before

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Special weather statement, Mar 1, 2:24 AM EST, 8 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
Feb 28, 8:05 PM EST	Wind Advisory	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	22 hr
Feb 28, 10:49 PM EST	Special Weather Statement	JAX	Hamilton	41 min
Feb 28, 11:36 PM EST	Special Weather Statement	JAX	Hamilton	39 min
Feb 28, 11:40 PM EST	Special Weather Statement	JAX	Suwannee	35 min
Mar 1, 12:17 AM EST	Special Weather Statement	JAX	Hamilton	43 min
Mar 1, 1:41 AM EST	Special Weather Statement	JAX	Union	49 min
Mar 1, 2:16 AM EST	Fire Weather Watch	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	36 hr
Mar 1, 3:03 AM EST	Gale Warning	JAX		30 hr
Mar 1, 3:11 AM EST	Special Weather Statement	JAX	Duval	34 min
Mar 1, 3:54 AM EST	Special Weather Statement	JAX	Baker, Union	36 min
Mar 1, 4:20 AM EST	Severe Thunderstorm Warning	JAX	Baker, Nassau	25 min
Mar 1, 4:47 AM EST	Special Weather Statement	JAX	Nassau	28 min
Mar 1, 9:58 AM EST	Special Marine Warning	JAX		47 min
Mar 1, 2:04 PM EST	Freeze Watch	JAX	Flagler, Nassau	24 hr
Mar 1, 2:04 PM EST	Freeze Warning	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	13 hr
Mar 1, 2:04 PM EST	Hard Freeze Watch	JAX	Baker, Bradford, Gilchrist, Suwannee, Union	24 hr
Mar 1, 2:04 PM EST	Wind Chill Advisory	JAX	Baker, Bradford, Gilchrist, Nassau, Suwannee, Union	13 hr
Mar 1, 2:43 PM EST	Red Flag Warning	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	28 hr
Mar 1, 6:42 PM EST	Lake Wind Advisory	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	3 hr
Feb 28, 7:24 PM EST	Special Weather Statement	JAX	Clinch	51 min
Feb 28, 7:53 PM EST	Special Weather Statement	JAX	Brantley, Ware	52 min
Feb 28, 8:41 PM EST	Special Weather Statement	JAX	Clinch	49 min
Feb 28, 10:16 PM EST	Special Weather Statement	JAX	Brantley	29 min
Feb 28, 10:43 PM EST	Special Weather Statement	JAX	Glynn	32 min
Feb 28, 11:58 PM EST	Special Weather Statement	JAX	Bacon, Coffee, Jeff Davis	32 min
Mar 1, 12:26 AM EST	Special Weather Statement	JAX	Atkinson, Bacon, Coffee, Jeff Davis	34 min
Mar 1, 12:57 AM EST	Special Weather Statement	JAX	Appling, Bacon, Coffee, Jeff Davis	33 min
Mar 1, 1:26 AM EST	Special Weather Statement	JAX	Appling, Bacon, Wayne	34 min
Mar 1, 1:28 AM EST	Special Weather Statement	JAX	Atkinson	32 min
Mar 1, 1:58 AM EST	Special Weather Statement	JAX	Bacon, Coffee	32 min
Mar 1, 1:59 AM EST	Special Weather Statement	JAX	Appling, Bacon	31 min
Mar 1, 2:24 AM EST	Special Weather Statement	JAX	Appling	36 min
Mar 1, 3:02 AM EST	Special Weather Statement	JAX	Clinch, Ware	43 min
Mar 1, 3:32 AM EST	Severe Thunderstorm Warning	JAX	Brantley, Charlton, Clinch, Pierce, Ware	43 min
Mar 1, 4:07 AM EST	Special Weather Statement	JAX	Brantley, Pierce, Wayne	38 min
Mar 1, 4:24 AM EST	Special Weather Statement	JAX	Echols	51 min
Mar 1, 4:30 AM EST	Special Weather Statement	JAX	Pierce	45 min
Mar 1, 4:35 AM EST	Severe Thunderstorm Warning	JAX	Clinch, Echols, Ware	40 min
Mar 1, 5:12 AM EST	Severe Thunderstorm Warning	JAX	Appling, Bacon, Brantley, Clinch, Pierce, Ware and 1 more	48 min
Mar 1, 5:40 AM EST	Tornado Warning	JAX	Brantley, Pierce, Ware	35 min
Mar 1, 6:05 AM EST	Special Weather Statement	JAX	Wayne	40 min
Mar 1, 6:09 AM EST	Special Weather Statement	JAX	Camden, Charlton, Glynn	66 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.