Alert archive / Florida / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 32, NWS Tampa Bay, FL

August 20, 2026Polk County, Sumter County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Aug 20, 2026, 2:57 PM EDT for Polk County, Sumter County, Florida. It was in force for 33 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 20, 2026, 2:57 PM EDT (18:57 UTC)
Expired
Aug 20, 2026, 3:30 PM EDT
In force
33 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Polk County, FL, Sumter County, FL

The radar

The Tampa radar (KTBW), 85 km from the middle of the area, began a volume at 18:56 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

Tampa Bay, FL (KTBW), launched 12:00Z, 7.0 hours before the alert went out and 86 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 2026-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1463 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 2026-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1463 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 8:10 PM EDTSpecial Weather StatementTBWPasco65 min
Aug 19, 9:48 PM EDTSpecial Weather StatementTBWLevy42 min
Aug 19, 10:27 PM EDTSpecial Weather StatementTBWOsceola33 min
Aug 19, 11:33 PM EDTSpecial Marine WarningTBW57 min
Aug 19, 11:35 PM EDTSpecial Weather StatementTBWHernando, Pasco40 min
Aug 20, 12:09 AM EDTHeat AdvisoryTBWCharlotte, Citrus, DeSoto, Hardee, Hernando, Highlands and 9 more19 hr
Aug 20, 12:13 AM EDTAreal Flood AdvisoryTBWHernando77 min
Aug 20, 12:17 AM EDTSpecial Weather StatementTBWPasco28 min
Aug 20, 12:18 AM EDTAreal Flood AdvisoryTBWHernando, Pasco, Pinellas72 min
Aug 20, 12:49 AM EDTSpecial Marine WarningTBW56 min
Aug 20, 1:02 AM EDTSpecial Weather StatementTBWPinellas43 min
Aug 20, 12:08 PM EDTSpecial Weather StatementTBWSumter22 min
Aug 20, 12:52 PM EDTSpecial Weather StatementTBWSumter23 min
Aug 20, 1:17 PM EDTSpecial Weather StatementTBWSumter28 min
Aug 20, 2:51 PM EDTSpecial Weather StatementTBWPolk39 min
Aug 20, 3:29 PM EDTSpecial Weather StatementTBWPolk46 min
Aug 20, 4:26 PM EDTSpecial Weather StatementTBWLevy49 min
Aug 20, 5:25 PM EDTSpecial Weather StatementTBWLevy50 min
Aug 20, 6:14 PM EDTSpecial Weather StatementTBWHighlands46 min
Aug 20, 6:53 PM EDTSpecial Weather StatementTBWGlades52 min

Nearby

Severe Thunderstorm Warnings in Florida, 2026Every severe thunderstorm warning in 2026

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.