Alert archive / Florida / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 23, NWS Tampa Bay, FL

June 9, 2019Sumter County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 9, 2019, 2:44 PM EDT for Sumter County, Florida. It was in force for 31 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: Jun 9, 2019, 2:44 PM EDT (18:44 UTC)
Expired: Jun 9, 2019, 3:15 PM EDT
In force: 31 min
Issued by: NWS Tampa Bay, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Sumter County, FL

The radar

The Tampa radar (KTBW), 116 km from the middle of the area, began a volume at 18:45 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, 6.7 hours before the alert went out and 157 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1333 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 880 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tampa Bay, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 8, 7:52 PM EDT, 18 hours 52 minutes earlier.

Area forecast discussion, Jun 8, 7:52 PM EDT, 18 hours 52 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 8:14 PM EDT	Special Weather Statement	TBW	Pasco	61 min
Jun 8, 8:41 PM EDT	Special Weather Statement	TBW	Hernando	34 min
Jun 8, 8:57 PM EDT	Special Marine Warning	TBW		93 min
Jun 8, 9:20 PM EDT	Special Weather Statement	TBW	Hillsborough, Pinellas	40 min
Jun 9, 8:00 AM EDT	Areal Flood Advisory	TBW	Levy	60 min
Jun 9, 12:40 PM EDT	Special Marine Warning	TBW		35 min
Jun 9, 1:05 PM EDT	Special Weather Statement	TBW	Pinellas	40 min
Jun 9, 1:06 PM EDT	Special Marine Warning	TBW		39 min
Jun 9, 1:09 PM EDT	Special Weather Statement	TBW	Levy	36 min
Jun 9, 1:14 PM EDT	Special Marine Warning	TBW		46 min
Jun 9, 1:30 PM EDT	Special Weather Statement	TBW	Highlands	45 min
Jun 9, 1:38 PM EDT	Severe Thunderstorm Warning	TBW	Highlands, Polk	37 min
Jun 9, 1:51 PM EDT	Special Weather Statement	TBW	Polk	24 min
Jun 9, 2:04 PM EDT	Special Weather Statement	TBW	Hillsborough	41 min
Jun 9, 2:17 PM EDT	Special Marine Warning	TBW		43 min
Jun 9, 2:23 PM EDT	Special Weather Statement	TBW	Sumter	52 min
Jun 9, 2:31 PM EDT	Special Weather Statement	TBW	Levy	44 min
Jun 9, 3:00 PM EDT	Special Marine Warning	TBW		60 min
Jun 9, 3:15 PM EDT	Special Weather Statement	TBW	Sumter	30 min
Jun 9, 3:20 PM EDT	Special Weather Statement	TBW	Levy	40 min
Jun 9, 6:44 PM EDT	Areal Flood Advisory	TBW	Hernando, Pasco	91 min
Jun 9, 6:52 PM EDT	Special Marine Warning	TBW		53 min
Jun 9, 7:00 PM EDT	Special Weather Statement	TBW	Pasco	45 min
Jun 9, 7:23 PM EDT	Special Weather Statement	TBW	Pinellas	37 min
Jun 9, 7:25 PM EDT	Severe Thunderstorm Warning	TBW	Pinellas	35 min
Jun 9, 7:40 PM EDT	Special Weather Statement	TBW	Hillsborough	35 min
Jun 9, 7:45 PM EDT	Special Marine Warning	TBW		45 min

Nearby

Severe Thunderstorm Warnings in Florida, 2019 Every 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.