Alert archive / Florida / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 23, NWS Tampa Bay, FL

April 25, 2010Levy County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 25, 2010, 5:34 PM EDT for Levy County, Florida. It was in force for 26 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 25, 2010, 5:34 PM EDT (21:34 UTC)
Expired
Apr 25, 2010, 6:00 PM EDT
In force
26 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon

County Levy County, FL

The radar

The Jacksonville radar (KJAX), 170 km from the middle of the area, began a volume at 21:36 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.

IssuedProductOfficeLasted
Apr 25, 12:18 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 9.6 hours before the alert went out and 171 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2010-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 334 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2010-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 311 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
334 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
776 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
311 m²/s²
0-3 km storm-relative helicity
337 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 11:32 AM EDTSpecial Weather StatementTBWGilchrist28 min
Apr 25, 11:59 AM EDTSevere Thunderstorm WarningTBWLevy46 min
Apr 25, 12:40 PM EDTSevere Thunderstorm WarningTBWLevy50 min
Apr 25, 1:04 PM EDTSpecial Marine WarningTBW41 min
Apr 25, 1:10 PM EDTSpecial Marine WarningTBW35 min
Apr 25, 1:24 PM EDTSevere Thunderstorm WarningTBWLevy51 min
Apr 25, 1:53 PM EDTSpecial Marine WarningTBW97 min
Apr 25, 5:14 PM EDTSpecial Marine WarningTBW31 min
Apr 25, 5:20 PM EDTSpecial Marine WarningTBW85 min
Apr 25, 6:01 PM EDTSevere Thunderstorm WarningTBWHernando, Pasco44 min
Apr 25, 6:22 PM EDTSevere Thunderstorm WarningTBWHillsborough, Pasco, Pinellas23 min
Apr 25, 6:48 PM EDTSpecial Marine WarningTBW87 min
Apr 25, 7:07 PM EDTSpecial Weather StatementTBWHillsborough, Pinellas53 min

Nearby

Severe Thunderstorm Warnings in Florida, 2010Every 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.