Alert archive / Florida / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 138, NWS Jacksonville, FL

August 30, 2013Columbia County, Hamilton County, Suwannee County, Florida

NWS Jacksonville, FL issued this severe thunderstorm warning at Aug 30, 2013, 8:03 PM EDT for Columbia County, Hamilton County, Suwannee County, Florida. It was in force for 42 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 30, 2013, 8:03 PM EDT (00:03 UTC)
Expired
Aug 30, 2013, 8:45 PM EDT
In force
42 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon

Counties Columbia County, FL, Hamilton County, FL, Suwannee County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.1 hours before the alert went out and 139 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 2013-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2133 joules per kilogram.LCLEL10008507005003002001001 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 2013-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
2133 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1215 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 8:16 PM EDTSpecial Weather StatementJAXBradford29 min
Aug 30, 8:50 PM EDTSpecial Weather StatementJAXClay25 min
Aug 31, 12:14 AM EDTSpecial Weather StatementJAXMarion46 min
Aug 31, 12:29 AM EDTAreal Flood AdvisoryJAXMarion2 hr
Aug 31, 2:16 PM EDTSpecial Weather StatementJAXPutnam29 min
Aug 31, 2:48 PM EDTSpecial Weather StatementJAXMarion42 min
Aug 31, 3:55 PM EDTSpecial Weather StatementJAXAlachua50 min
Aug 31, 4:14 PM EDTSpecial Weather StatementJAXFlagler31 min
Aug 31, 4:22 PM EDTSpecial Weather StatementJAXClay38 min
Aug 31, 4:44 PM EDTSpecial Weather StatementJAXDuval31 min
Aug 31, 4:53 PM EDTAreal Flood AdvisoryJAXClay67 min
Aug 31, 5:03 PM EDTAreal Flood AdvisoryJAXDuval42 min
Aug 31, 5:16 PM EDTSpecial Weather StatementJAXBaker29 min
Aug 31, 5:27 PM EDTSpecial Weather StatementJAXNassau33 min
Aug 31, 5:56 PM EDTSpecial Weather StatementJAXNassau49 min
Aug 31, 6:19 PM EDTAreal Flood AdvisoryJAXNassau41 min
Aug 31, 6:13 PM EDTSpecial Weather StatementJAXCharlton32 min
Aug 31, 6:40 PM EDTSpecial Weather StatementJAXCharlton35 min
Aug 31, 7:22 PM EDTSpecial Weather StatementJAXWare23 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.