Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 194, NWS Tallahassee, FL

September 24, 2013Holmes County, Jackson County, Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Sep 24, 2013, 8:42 PM CDT for Holmes County, Jackson County, Washington County, Florida. It was in force for 33 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
Sep 24, 2013, 8:42 PM CDT (01:42 UTC)
Expired
Sep 24, 2013, 9:15 PM CDT
In force
33 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Holmes County, FL, Jackson County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 40 km from the middle of the area, began a volume at 01:46 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, 1.7 hours before the alert went out and 127 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, Tallahassee Rgnl, FL at 00:00Z on 2013-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 917 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, Tallahassee Rgnl, FL at 00:00Z on 2013-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.193958Sfc1 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
917 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
528 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

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 Sep 24, 6:21 PM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Sep 24, 6:21 PM CDT, 2 hours 21 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 24, 7:23 PM CDTSevere Thunderstorm WarningTAEHolmes, Walton67 min
Sep 24, 8:03 PM CDTSpecial Marine WarningTAE117 min
Sep 24, 9:26 PM CDTSpecial Marine WarningTAE2 hr
Sep 24, 10:18 PM CDTSpecial Marine WarningTAE57 min
Sep 24, 10:40 PM CDTSpecial Weather StatementTAEFranklin, Liberty, Wakulla65 min
Sep 24, 10:45 PM CDTSpecial Marine WarningTAE105 min
Sep 24, 10:56 PM CDTSevere Thunderstorm WarningTAELeon, Liberty, Wakulla49 min
Sep 24, 11:40 PM CDTSpecial Weather StatementTAEJefferson65 min
Sep 24, 11:50 PM CDTSpecial Marine WarningTAE100 min
Sep 25, 2:54 AM CDTRip Current StatementTAEBay, Gulf, Walton18 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2013Every 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.