Alert archive / Georgia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 104, NWS Tallahassee, FL

June 25, 2013Grady County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 25, 2013, 5:10 PM EDT for Grady County, Georgia. It was in force for 35 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, 2013, 5:10 PM EDT (21:10 UTC)
Expired
Jun 25, 2013, 5:45 PM EDT
In force
35 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Grady County, GA

The radar

The Tallahassee radar (KTLH), 54 km from the middle of the area, began a volume at 21:10 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

Jacksonville, FL (KJAX), launched 12:00Z, 9.2 hours before the alert went out and 246 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, Jacksonville, FL at 12:00Z on 2013-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 766 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, Jacksonville, FL at 12:00Z on 2013-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
766 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
692 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
-1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 2:30 PM EDTSpecial Weather StatementTAEMadison30 min
Jun 25, 3:44 PM EDTAreal Flood AdvisoryTAEMadison3 hr
Jun 25, 5:32 PM EDTSpecial Weather StatementTAECalhoun28 min
Jun 25, 6:31 PM EDTSevere Thunderstorm WarningTAEBay, Washington29 min
Jun 25, 6:59 PM EDTSpecial Weather StatementTAEWashington31 min
Jun 25, 3:53 PM EDTSpecial Weather StatementTAEBrooks37 min
Jun 25, 4:43 PM EDTSpecial Weather StatementTAEBrooks32 min
Jun 25, 4:48 PM EDTSpecial Weather StatementTAEThomas22 min
Jun 25, 5:02 PM EDTSpecial Weather StatementTAEGrady28 min
Jun 25, 5:13 PM EDTSpecial Weather StatementTAEThomas22 min
Jun 25, 5:26 PM EDTSevere Thunderstorm WarningTAEGrady, Thomas34 min
Jun 25, 6:22 PM EDTSpecial Weather StatementTAELee38 min
Jun 25, 6:36 PM EDTSevere Thunderstorm WarningTAELee39 min
Jun 25, 7:32 PM EDTAreal Flood AdvisoryTAEEarly58 min
Jun 25, 6:40 PM EDTSpecial Weather StatementTAEHouston35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 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.