Alert archive / Florida / Tornado Warnings in 1990

Tornado Warning 8, NWS Tampa Bay, FL

July 25, 1990Pasco County, Pinellas County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jul 25, 1990, 11:07 AM EDT for Pasco County, Pinellas County, Florida. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Jul 25, 1990, 11:07 AM EDT (15:07 UTC)
Expired
Jul 25, 1990, 11:40 AM EDT
In force
33 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

Counties Pasco County, FL, Pinellas County, FL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 3.1 hours before the alert went out and 48 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, Tampa Bay, FL at 12:00Z on 1990-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2056 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, Tampa Bay, FL at 12:00Z on 1990-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.1939Sfc1 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
2056 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
835 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jul 24, 8:17 PM EDTSevere Thunderstorm WarningTBWLee58 min
Jul 25, 3:21 PM EDTSevere Thunderstorm WarningTBWSarasota39 min
Jul 25, 5:50 PM EDTSevere Thunderstorm WarningTBWPolk30 min
Jul 25, 7:16 PM EDTSevere Thunderstorm WarningTBWHighlands29 min

Nearby

Tornado Warnings in Florida, 1990Every tornado warning in 1990Tornadoes in 1990

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.