Alert archive / Florida / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 26, NWS Tampa Bay, FL

April 26, 2010Hillsborough County, Manatee County, Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 26, 2010, 12:16 AM EDT for Hillsborough County, Manatee County, Pinellas 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: Apr 26, 2010, 12:16 AM EDT (04:16 UTC)
Expired: Apr 26, 2010, 1:00 AM EDT
In force: 44 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon

Counties Hillsborough County, FL, Manatee County, FL, Pinellas County, FL

The radar

The Tampa radar (KTBW), 10 km from the middle of the area, began a volume at 04:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 25, 11:28 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 4.3 hours before the alert went out and 306 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: 2012 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 755 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 6.7

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 Apr 25, 11:35 PM EDT, 41 minutes earlier.

Area forecast discussion, Apr 25, 11:35 PM EDT, 41 minutes before

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In the hours before

Special weather statement, Apr 25, 8:00 PM EDT, 4 hours 16 minutes before

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Local storm report, Apr 25, 8:29 PM EDT, 3 hours 47 minutes before

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Local storm report, Apr 25, 9:30 PM EDT, 2 hours 46 minutes before

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Special weather statement, Apr 25, 10:30 PM EDT, 1 hour 46 minutes before

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Special weather statement, Apr 25, 11:25 PM EDT, 51 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
Apr 25, 8:00 PM EDT	Special Weather Statement	TBW	Polk	60 min
Apr 25, 8:20 PM EDT	Special Marine Warning	TBW		85 min
Apr 25, 10:30 PM EDT	Special Weather Statement	TBW	Pinellas	45 min
Apr 25, 11:25 PM EDT	Special Weather Statement	TBW	Hillsborough, Pinellas	50 min
Apr 25, 11:29 PM EDT	Special Marine Warning	TBW		61 min
Apr 25, 11:43 PM EDT	Areal Flood Advisory	TBW	Hillsborough	92 min
Apr 26, 12:00 AM EDT	Special Marine Warning	TBW		90 min
Apr 26, 12:59 AM EDT	Severe Thunderstorm Warning	TBW	Hillsborough, Manatee, Sarasota	46 min
Apr 26, 1:27 AM EDT	Special Weather Statement	TBW	Hardee	48 min
Apr 26, 2:14 AM EDT	Special Weather Statement	TBW	Highlands	46 min
Apr 26, 3:16 AM EDT	Special Weather Statement	TBW	Charlotte, Lee	44 min
Apr 26, 3:19 AM EDT	Special Marine Warning	TBW		56 min
Apr 26, 4:16 AM EDT	Special Marine Warning	TBW		59 min
Apr 26, 4:30 AM EDT	Special Marine Warning	TBW		60 min
Apr 26, 5:01 AM EDT	Special Weather Statement	TBW	Charlotte	44 min
Apr 26, 5:46 AM EDT	Special Marine Warning	TBW		59 min
Apr 26, 6:17 AM EDT	Special Weather Statement	TBW	Lee	58 min
Apr 26, 6:41 AM EDT	Special Marine Warning	TBW		94 min

Nearby

Severe Thunderstorm Warnings in Florida, 2010 Every severe thunderstorm warning in 2010

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.