Alert archive / Florida / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 173, NWS Tallahassee, FL

June 25, 2019Walton County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 25, 2019, 6:39 PM CDT for Walton County, Florida. It was in force for 34 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 25, 2019, 6:39 PM CDT (23:39 UTC)
Expired: Jun 25, 2019, 7:13 PM CDT
In force: 34 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 25 km from the middle of the area, began a volume at 23:39 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.7 hours before the alert went out and 181 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: 1421 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1049 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: -144 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 Jun 25, 6:39 PM CDT, 0 minutes earlier.

Area forecast discussion, Jun 25, 6:39 PM CDT, 0 minutes before

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In the hours before

Special weather statement, Jun 25, 4:23 PM CDT, 2 hours 16 minutes before

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Local storm report, Jun 25, 4:27 PM CDT, 2 hours 12 minutes before

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Special weather statement, Jun 25, 4:52 PM CDT, 1 hour 47 minutes before

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Special weather statement, Jun 25, 4:56 PM CDT, 1 hour 43 minutes before

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Special weather statement, Jun 25, 5:30 PM CDT, 1 hour 9 minutes before

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Special weather statement, Jun 25, 5:56 PM CDT, 43 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
Jun 24, 7:40 PM CDT	Special Weather Statement	TAE	Madison	35 min
Jun 25, 2:25 PM CDT	Special Weather Statement	TAE	Washington	35 min
Jun 25, 2:56 PM CDT	Special Weather Statement	TAE	Washington	49 min
Jun 25, 3:22 PM CDT	Special Weather Statement	TAE	Liberty	68 min
Jun 25, 3:32 PM CDT	Special Weather Statement	TAE	Wakulla	43 min
Jun 25, 3:41 PM CDT	Severe Thunderstorm Warning	TAE	Wakulla	42 min
Jun 25, 3:43 PM CDT	Special Marine Warning	TAE		92 min
Jun 25, 3:51 PM CDT	Special Weather Statement	TAE	Taylor	39 min
Jun 25, 4:17 PM CDT	Special Weather Statement	TAE	Walton	43 min
Jun 25, 4:23 PM CDT	Special Weather Statement	TAE	Liberty	67 min
Jun 25, 4:29 PM CDT	Special Marine Warning	TAE		2 hr
Jun 25, 4:52 PM CDT	Special Weather Statement	TAE	Wakulla	23 min
Jun 25, 4:56 PM CDT	Special Weather Statement	TAE	Walton	34 min
Jun 25, 5:16 PM CDT	Special Marine Warning	TAE		59 min
Jun 25, 5:30 PM CDT	Special Weather Statement	TAE	Holmes	30 min
Jun 25, 5:56 PM CDT	Special Weather Statement	TAE	Holmes, Walton	49 min
Jun 25, 6:09 PM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton, Washington	66 min
Jun 25, 6:21 PM CDT	Special Marine Warning	TAE		54 min
Jun 25, 6:37 PM CDT	Special Marine Warning	TAE		40 min
Jun 25, 3:45 PM CDT	Special Weather Statement	TAE	Decatur, Grady	45 min
Jun 25, 6:44 PM CDT	Special Weather Statement	TAE	Grady	31 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.