Alert archive / Florida / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 35, NWS Tampa Bay, FL

June 11, 2008Polk County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 11, 2008, 6:31 PM EDT for Polk County, Florida. It was in force for 29 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 11, 2008, 6:31 PM EDT (22:31 UTC)
Expired: Jun 11, 2008, 7:00 PM EDT
In force: 29 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

County Polk County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 10.5 hours before the alert went out and 131 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: 177 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1320 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 36 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 Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 1:46 PM EDT, 4 hours 45 minutes earlier.

Area forecast discussion, Jun 11, 1:46 PM EDT, 4 hours 45 minutes before

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Hazardous weather outlook, Jun 11, 5:39 AM EDT, 12 hours 52 minutes before

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In the hours before

Special weather statement, Jun 11, 3:10 PM EDT, 3 hours 21 minutes before

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Special weather statement, Jun 11, 5:47 PM EDT, 44 minutes before

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Local storm report, Jun 11, 6:24 PM EDT, 7 minutes before

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The office that day

Everything else NWS Tampa Bay, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 8:29 PM EDT	Areal Flood Advisory	TBW	Highlands	46 min
Jun 11, 6:15 PM EDT	Severe Thunderstorm Warning	TBW	Hardee	30 min
Jun 11, 7:41 PM EDT	Severe Thunderstorm Warning	TBW	DeSoto	17 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.