Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 131, NWS Tallahassee, FL

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

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 29, 2013, 12:51 AM CDT for Holmes County, Walton County, Washington County, Florida. It was in force for 54 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, 12:51 AM CDT (05:51 UTC)
Expired
Jun 29, 2013, 1:45 AM CDT
In force
54 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Holmes County, FL, Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 15 km from the middle of the area, began a volume at 05:52 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, 5.9 hours before the alert went out and 155 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 2013-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2714 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 2013-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
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, 3 hours 57 minutes earlier.

Area forecast discussion, Jun 28, 8:54 PM CDT, 3 hours 57 minutes before
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In the hours before

Special weather statement, Jun 28, 10:40 PM CDT, 2 hours 11 minutes before
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Special weather statement, Jun 28, 11:21 PM CDT, 1 hour 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1121 PM CDT FRI JUN 28 2013

ALZ066-069-290515-
DALE AL-HOUSTON AL-
1121 PM CDT FRI JUN 28 2013

...SIGNIFICANT WEATHER ADVISORY IN EFFECT FOR DALE AND WESTERN
HOUSTON COUNTIES...

* UNTIL 1215 AM CDT

AT 1117 PM CDT...THE NATIONAL WEATHER SERVICE HAS DETECTED STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES SOUTHWEST OF
BRUNDIDGE TO SAMSON...OR ALONG A LINE EXTENDING FROM CLOWERS
CROSSROADS TO GANER...MOVING SOUTHEAST AT 35 MPH.

PEOPLE IN DALE AND WESTERN HOUSTON COUNTIES...INCLUDING THE CITIES OF
ARITON...LEVEL PLAINS...FORT RUCKER...DALEVILLE...OZARK...NEWTON...
PINCKARD...MIDLAND CITY AND TAYLOR...SHOULD MONITOR THE WEATHER
SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO
TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

WINDS AROUND 50 MPH ARE EXPECTED WITH THESE STORMS.

ALSO...FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS
STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER
ONE KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

LAT...LON 3162 8542 3132 8542 3131 8532 3100 8537
      3099 8549 3120 8549 3120 8579 3162 8579
TIME...MOT...LOC 0421Z 306DEG 29KT 3161 8585 3109 8608

42-DVD
Special weather statement, Jun 28, 11:43 PM CDT, 1 hour 8 minutes before
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Special weather statement, Jun 29, 12:00 AM CDT, 51 minutes before
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Special weather statement, Jun 29, 12:05 AM CDT, 46 minutes before
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Special weather statement, Jun 29, 12:14 AM CDT, 37 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 7:26 PM CDTSpecial Weather StatementTAETaylor64 min
Jun 28, 7:55 PM CDTSpecial Weather StatementTAETaylor65 min
Jun 29, 12:00 AM CDTSpecial Weather StatementTAEHolmes30 min
Jun 29, 12:05 AM CDTSpecial Weather StatementTAEWalton25 min
Jun 29, 12:21 AM CDTSevere Thunderstorm WarningTAEHolmes, Walton39 min
Jun 29, 1:43 AM CDTSpecial Weather StatementTAEWalton, Washington32 min
Jun 29, 2:14 AM CDTSpecial Marine WarningTAE61 min
Jun 29, 2:17 AM CDTSpecial Weather StatementTAEWashington43 min
Jun 29, 2:34 AM CDTSevere Thunderstorm WarningTAEBay, Walton, Washington41 min
Jun 29, 3:11 AM CDTSpecial Marine WarningTAE94 min
Jun 29, 3:13 AM CDTSpecial Weather StatementTAEBay62 min
Jun 29, 3:45 AM CDTSpecial Marine WarningTAE60 min
Jun 29, 3:59 AM CDTSpecial Weather StatementTAEWashington31 min
Jun 29, 4:34 AM CDTSpecial Marine WarningTAE71 min
Jun 29, 4:39 AM CDTSpecial Marine WarningTAE81 min
Jun 29, 5:32 AM CDTSpecial Marine WarningTAE88 min
Jun 29, 6:57 AM CDTSpecial Marine WarningTAE63 min
Jun 29, 7:57 AM CDTSpecial Marine WarningTAE63 min
Jun 29, 10:45 AM CDTRip Current StatementTAEBay, Franklin, Gulf, Walton10 hr
Jun 28, 10:40 PM CDTSpecial Weather StatementTAECoffee, Geneva65 min
Jun 28, 11:21 PM CDTSpecial Weather StatementTAEDale54 min
Jun 28, 11:43 PM CDTSpecial Weather StatementTAEGeneva32 min
Jun 29, 12:14 AM CDTSpecial Weather StatementTAEHouston46 min

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.