Alert archive / Florida / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 119, NWS Tampa Bay, FL

August 25, 2007Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 25, 2007, 6:56 PM EDT for Hillsborough County, Florida. It was in force for 34 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 25, 2007, 6:56 PM EDT (22:56 UTC)
Expired: Aug 25, 2007, 7:30 PM EDT
In force: 34 min
Issued by: NWS Tampa Bay, FL
Area: Counties, with a storm outline in the text

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 23 km from the middle of the area, began a volume at 22:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 10.9 hours before the alert went out and 192 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: 792 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 4 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 Aug 25, 1:29 PM EDT, 5 hours 27 minutes earlier.

Area forecast discussion, Aug 25, 1:29 PM EDT, 5 hours 27 minutes before

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Hazardous weather outlook, Aug 25, 2:50 AM EDT, 16 hours 6 minutes before

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In the hours before

Special weather statement, Aug 25, 1:03 PM EDT, 5 hours 53 minutes before

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Special weather statement, Aug 25, 2:32 PM EDT, 4 hours 24 minutes before

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Special weather statement, Aug 25, 4:42 PM EDT, 2 hours 14 minutes before

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Special weather statement, Aug 25, 5:20 PM EDT, 1 hour 36 minutes before

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Special weather statement, Aug 25, 6:21 PM EDT, 35 minutes before

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Special weather statement, Aug 25, 6:46 PM EDT, 10 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
Aug 24, 8:01 PM EDT	Special Marine Warning	TBW		44 min
Aug 25, 1:03 PM EDT	Special Weather Statement	TBW	Manatee	27 min
Aug 25, 6:25 PM EDT	Severe Thunderstorm Warning	TBW	Polk	40 min

Nearby

Severe Thunderstorm Warnings in Florida, 2007 Every severe thunderstorm warning in 2007

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; radar from the NEXRAD Level II archive.