Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 173, NWS Jacksonville, FL

June 9, 2008Columbia County, Hamilton County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 9, 2008, 7:53 PM EDT for Columbia County, Hamilton County, Florida. It was in force for 52 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 9, 2008, 7:53 PM EDT (23:53 UTC)
Expired: Jun 9, 2008, 8:45 PM EDT
In force: 52 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon

Counties Columbia County, FL, Hamilton County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.9 hours before the alert went out and 145 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: 1311 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 9, 2:04 PM EDT, 5 hours 49 minutes earlier.

Area forecast discussion, Jun 9, 2:04 PM EDT, 5 hours 49 minutes before

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Hazardous weather outlook, Jun 9, 2:07 PM EDT, 5 hours 46 minutes before

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In the hours before

Special weather statement, Jun 9, 5:07 PM EDT, 2 hours 46 minutes before

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Special weather statement, Jun 9, 5:18 PM EDT, 2 hours 35 minutes before

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Special weather statement, Jun 9, 5:37 PM EDT, 2 hours 16 minutes before

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Special weather statement, Jun 9, 6:50 PM EDT, 1 hour 3 minutes before

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Special weather statement, Jun 9, 7:23 PM EDT, 30 minutes before

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Special weather statement, Jun 9, 7:47 PM EDT, 6 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 9, 4:33 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Marion	42 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.