Alert archive / Florida / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 269, NWS Tallahassee, FL

August 20, 2022Franklin County, Liberty County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Aug 20, 2022, 2:02 PM EDT for Franklin County, Liberty County, Florida. It was in force for 28 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, 2022, 2:02 PM EDT (18:02 UTC)
Expired: Aug 20, 2022, 2:30 PM EDT
In force: 28 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Franklin County, FL, Liberty County, FL

The radar

The Tallahassee radar (KTLH), 64 km from the middle of the area, began a volume at 18:05 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

Jacksonville, FL (KJAX), launched 12:00Z, 6.0 hours before the alert went out and 306 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: 2055 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 20, 10:56 AM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, Aug 20, 10:56 AM EDT, 3 hours 6 minutes before

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In the hours before

Special weather statement, Aug 20, 12:49 PM EDT, 1 hour 13 minutes before

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Special weather statement, Aug 20, 1:08 PM EDT, 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 12:49 PM EDT	Special Weather Statement	TAE	Holmes	41 min
Aug 20, 1:08 PM EDT	Special Weather Statement	TAE	Wakulla	37 min
Aug 20, 2:27 PM EDT	Special Weather Statement	TAE	Liberty	48 min
Aug 20, 3:08 PM EDT	Special Weather Statement	TAE	Calhoun, Liberty	52 min
Aug 20, 3:33 PM EDT	Areal Flood Advisory	TAE	Calhoun	117 min
Aug 20, 3:42 PM EDT	Severe Thunderstorm Warning	TAE	Gadsden, Liberty	33 min
Aug 20, 4:26 PM EDT	Special Weather Statement	TAE	Washington	34 min
Aug 19, 9:00 PM EDT	Areal Flood Advisory	TAE	Colquitt, Cook	2 hr
Aug 19, 9:52 PM EDT	Special Weather Statement	TAE	Decatur	38 min
Aug 20, 4:29 PM EDT	Special Weather Statement	TAE	Decatur, Grady	46 min
Aug 20, 4:55 PM EDT	Severe Thunderstorm Warning	TAE	Grady	50 min
Aug 20, 5:16 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Mitchell	59 min
Aug 20, 5:46 PM EDT	Severe Thunderstorm Warning	TAE	Clay, Quitman, Randolph	28 min
Aug 20, 6:12 PM EDT	Special Weather Statement	TAE	Lowndes	33 min
Aug 20, 6:40 PM EDT	Special Weather Statement	TAE	Lowndes	35 min
Aug 20, 6:58 PM EDT	Severe Thunderstorm Warning	TAE	Berrien, Cook, Lowndes	32 min
Aug 20, 4:52 PM EDT	Special Weather Statement	TAE	Henry	38 min
Aug 20, 4:59 PM EDT	Severe Thunderstorm Warning	TAE	Henry	46 min
Aug 20, 5:36 PM EDT	Special Weather Statement	TAE	Henry	24 min

Nearby

Severe Thunderstorm Warnings in Florida, 2022 Every 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.