Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 356, NWS Jacksonville, FL

August 23, 2008Hamilton County, Suwannee County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Aug 23, 2008, 3:45 AM EDT for Hamilton County, Suwannee County, Florida. It was in force for 44 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 23, 2008, 3:45 AM EDT (07:45 UTC)
Expired: Aug 23, 2008, 4:29 AM EDT
In force: 44 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Hamilton County, FL, Suwannee County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.8 hours before the alert went out and 128 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: 111 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 485 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 312 m²/s²
0-3 km storm-relative helicity: 431 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 23, 3:25 AM EDT, 20 minutes earlier.

Area forecast discussion, Aug 23, 3:25 AM EDT, 20 minutes before

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Hazardous weather outlook, Aug 22, 11:09 PM EDT, 4 hours 36 minutes before

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In the hours before

Special weather statement, Aug 22, 10:23 PM EDT, 5 hours 22 minutes before

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Special weather statement, Aug 22, 11:18 PM EDT, 4 hours 27 minutes before

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Local storm report, Aug 22, 11:23 PM EDT, 4 hours 22 minutes before

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Local storm report, Aug 23, 12:00 AM EDT, 3 hours 45 minutes before

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Local storm report, Aug 23, 12:20 AM EDT, 3 hours 25 minutes before

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Special weather statement, Aug 23, 3:34 AM EDT, 11 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 22, 8:16 PM EDT	Areal Flood Advisory	JAX	Clay, Putnam, Saint Johns	4 hr
Aug 22, 8:27 PM EDT	Areal Flood Warning	JAX	Duval	12 hr
Aug 22, 9:02 PM EDT	Tornado Warning	JAX	Clay, Duval, Saint Johns	43 min
Aug 22, 9:30 PM EDT	Areal Flood Warning	JAX	Clay	8 hr
Aug 22, 9:37 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford, Union	4 hr
Aug 23, 12:43 AM EDT	Coastal Flood Statement	JAX	Flagler, Nassau	17 hr
Aug 23, 12:46 AM EDT	Areal Flood Advisory	JAX	Alachua, Columbia, Gilchrist, Hamilton, Suwannee, Union	119 min
Aug 23, 2:50 AM EDT	Areal Flood Advisory	JAX	Alachua, Columbia, Gilchrist, Hamilton, Suwannee, Union	4 hr
Aug 23, 3:07 AM EDT	Areal Flood Warning	JAX	Gilchrist, Suwannee	3 hr
Aug 23, 4:06 AM EDT	Small Craft Advisory	JAX		10 hr
Aug 23, 4:23 AM EDT	Areal Flood Advisory	JAX	Columbia, Hamilton	3 hr
Aug 23, 5:18 AM EDT	Lake Wind Advisory	JAX	Baker, Bradford, Flagler, Gilchrist, Nassau, Suwannee and 1 more	14 hr
Aug 23, 6:46 AM EDT	Areal Flood Advisory	JAX	Suwannee	89 min
Aug 23, 8:10 AM EDT	Areal Flood Advisory	JAX	Hamilton, Suwannee	4 hr
Aug 23, 3:22 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Columbia, Gilchrist, Union	38 min
Aug 23, 3:56 PM EDT	Tornado Warning	JAX	Alachua, Baker, Columbia, Hamilton, Union	64 min
Aug 23, 4:17 PM EDT	Severe Thunderstorm Warning	JAX	Clay	43 min
Aug 23, 4:32 PM EDT	Tornado Warning	JAX	Columbia, Hamilton	43 min
Aug 23, 5:25 PM EDT	Areal Flood Advisory	JAX	Alachua, Bradford, Clay, Marion, Putnam	4 hr
Aug 23, 5:43 PM EDT	Areal Flood Advisory	JAX	Alachua, Baker, Columbia, Gilchrist, Hamilton, Suwannee and 1 more	4 hr
Aug 23, 5:55 PM EDT	Tornado Warning	JAX	Putnam	20 min
Aug 22, 11:29 PM EDT	Areal Flood Advisory	JAX	Atkinson, Clinch, Echols	2 hr
Aug 22, 11:52 PM EDT	Areal Flood Advisory	JAX	Bacon, Brantley, Camden, Charlton, Coffee, Jeff Davis and 2 more	113 min
Aug 23, 1:26 AM EDT	Areal Flood Advisory	JAX	Appling, Bacon, Brantley, Camden, Glynn, Jeff Davis and 2 more	2 hr
Aug 23, 2:57 PM EDT	Flood Watch	JAX	Clinch, Echols	13 hr
Aug 23, 5:47 PM EDT	Tornado Warning	JAX	Clinch	28 min
Aug 23, 6:09 PM EDT	Tornado Warning	JAX	Atkinson	36 min

Nearby

Severe Thunderstorm Warnings in Florida, 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.