Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 132, NWS Tallahassee, FL

June 29, 2013Bay County, Walton County, Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 29, 2013, 2:34 AM CDT for Bay County, Walton County, Washington County, Florida. It was in force for 41 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 29, 2013, 2:34 AM CDT (07:34 UTC)
Expired: Jun 29, 2013, 3:15 AM CDT
In force: 41 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Bay County, FL, Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 13 km from the middle of the area, began a volume at 07:35 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 00:00Z, 7.6 hours before the alert went out and 146 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: 2714 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 65 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 28, 8:54 PM CDT, 5 hours 40 minutes earlier.

Area forecast discussion, Jun 28, 8:54 PM CDT, 5 hours 40 minutes before

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In the hours before

Special weather statement, Jun 28, 11:43 PM CDT, 2 hours 51 minutes before

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Special weather statement, Jun 29, 12:00 AM CDT, 2 hours 34 minutes before

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Special weather statement, Jun 29, 12:05 AM CDT, 2 hours 29 minutes before

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Special weather statement, Jun 29, 12:14 AM CDT, 2 hours 20 minutes before

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Special weather statement, Jun 29, 1:43 AM CDT, 51 minutes before

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Special weather statement, Jun 29, 2:17 AM CDT, 17 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 28, 7:26 PM CDT	Special Weather Statement	TAE	Taylor	64 min
Jun 28, 7:55 PM CDT	Special Weather Statement	TAE	Taylor	65 min
Jun 29, 12:00 AM CDT	Special Weather Statement	TAE	Holmes	30 min
Jun 29, 12:05 AM CDT	Special Weather Statement	TAE	Walton	25 min
Jun 29, 12:21 AM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton	39 min
Jun 29, 12:51 AM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton, Washington	54 min
Jun 29, 1:43 AM CDT	Special Weather Statement	TAE	Walton, Washington	32 min
Jun 29, 2:14 AM CDT	Special Marine Warning	TAE		61 min
Jun 29, 2:17 AM CDT	Special Weather Statement	TAE	Washington	43 min
Jun 29, 3:11 AM CDT	Special Marine Warning	TAE		94 min
Jun 29, 3:13 AM CDT	Special Weather Statement	TAE	Bay	62 min
Jun 29, 3:45 AM CDT	Special Marine Warning	TAE		60 min
Jun 29, 3:59 AM CDT	Special Weather Statement	TAE	Washington	31 min
Jun 29, 4:34 AM CDT	Special Marine Warning	TAE		71 min
Jun 29, 4:39 AM CDT	Special Marine Warning	TAE		81 min
Jun 29, 5:32 AM CDT	Special Marine Warning	TAE		88 min
Jun 29, 6:57 AM CDT	Special Marine Warning	TAE		63 min
Jun 29, 7:57 AM CDT	Special Marine Warning	TAE		63 min
Jun 29, 10:45 AM CDT	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	10 hr
Jun 28, 10:40 PM CDT	Special Weather Statement	TAE	Coffee, Geneva	65 min
Jun 28, 11:21 PM CDT	Special Weather Statement	TAE	Dale	54 min
Jun 28, 11:43 PM CDT	Special Weather Statement	TAE	Geneva	32 min
Jun 29, 12:14 AM CDT	Special Weather Statement	TAE	Houston	46 min

Nearby

Severe Thunderstorm Warnings in Florida, 2013 Every severe thunderstorm warning in 2013

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.