Alert archive / Florida / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 30, NWS Tampa Bay, FL

April 30, 1996Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Apr 30, 1996, 7:43 AM EDT for Hillsborough County, Florida. It was in force for 62 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 30, 1996, 7:43 AM EDT (11:43 UTC)
Expired
Apr 30, 1996, 8:45 AM EDT
In force
62 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Hillsborough County, FL

The radar

The Tampa radar (KTBW), 23 km from the middle of the area, began a volume at 11:44 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 00:00Z, 11.7 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-pSkew-T log-p diagram, Cape Canaveral, FL at 00:00Z on 1996-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1159 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, Cape Canaveral, FL at 00:00Z on 1996-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.193958Sfc1 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
1159 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
981 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 6:07 AM EDTSevere Thunderstorm WarningTBWPinellas53 min
Apr 30, 7:06 AM EDTSevere Thunderstorm WarningTBWPasco, Pinellas69 min
Apr 30, 7:52 AM EDTTornado WarningTBWHardee, Polk68 min
Apr 30, 8:08 AM EDTSevere Thunderstorm WarningTBWHernando, Sumter52 min
Apr 30, 9:04 AM EDTTornado WarningTBWPolk41 min
Apr 30, 9:15 AM EDTSevere Thunderstorm WarningTBWDeSoto, Hardee, Manatee, Polk60 min
Apr 30, 12:41 PM EDTSevere Thunderstorm WarningTBWLee64 min

Nearby

Severe Thunderstorm Warnings in Florida, 1996Every severe thunderstorm warning in 1996

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.