Alert archive / Florida / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 35, NWS Tampa Bay, FL

July 12, 2019Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jul 12, 2019, 5:10 PM EDT for Pinellas County, Florida. It was in force for 22 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
Jul 12, 2019, 5:10 PM EDT (21:10 UTC)
Expired
Jul 12, 2019, 5:32 PM EDT
In force
22 min
Issued by
NWS Tampa Bay, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Pinellas County, FL

The radar

The Tampa radar (KTBW), 40 km from the middle of the area, began a volume at 21:10 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, 9.2 hours before the alert went out and 228 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 2019-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 47 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 2019-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 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
47 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1139 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-54 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
Jul 12, 4:16 PM EDTSpecial Marine WarningTBW44 min
Jul 12, 4:43 PM EDTSpecial Weather StatementTBWHernando, Pasco, Pinellas47 min
Jul 12, 4:54 PM EDTAreal Flood AdvisoryTBWSumter66 min
Jul 12, 4:59 PM EDTSpecial Marine WarningTBW46 min
Jul 12, 5:30 PM EDTSpecial Weather StatementTBWHernando, Hillsborough, Pasco45 min
Jul 12, 6:52 PM EDTSpecial Weather StatementTBWPinellas38 min

Nearby

Severe Thunderstorm Warnings in Florida, 2019Every severe thunderstorm warning in 2019

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.