Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 20, NWS Tampa Bay, FL

May 21, 2022Polk County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 21, 2022, 7:37 PM EDT for Polk County, Florida. It was in force for 23 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
May 21, 2022, 7:37 PM EDT (23:37 UTC)
Expired
May 21, 2022, 8:00 PM EDT
In force
23 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Polk County, FL

The radar

The Tampa radar (KTBW), 74 km from the middle of the area, began a volume at 23:40 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 12:00Z, 11.6 hours before the alert went out and 131 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 12:00Z on 2022-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 501 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 12:00Z on 2022-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 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
501 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
1237 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
147 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 9:45 PM EDTAreal Flood AdvisoryTBWCitrus, Hernando, Pasco, Sumter2 hr
May 20, 9:55 PM EDTSpecial Marine WarningTBW65 min
May 20, 10:21 PM EDTSpecial Marine WarningTBW39 min
May 21, 12:05 AM EDTAreal Flood AdvisoryTBWCitrus, Hernando, Sumter115 min
May 21, 6:57 PM EDTSpecial Weather StatementTBWDeSoto, Hardee48 min
May 21, 7:08 PM EDTSpecial Weather StatementTBWHernando37 min
May 21, 7:14 PM EDTSpecial Weather StatementTBWSumter31 min
May 21, 7:25 PM EDTSpecial Weather StatementTBWSumter35 min
May 21, 7:46 PM EDTSpecial Weather StatementTBWPolk29 min
May 21, 7:59 PM EDTSpecial Weather StatementTBWPolk31 min

Nearby

Severe Thunderstorm Warnings in Florida, 2022Every severe thunderstorm warning in 2022

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.