Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 206, NWS Tallahassee, FL

June 14, 2012Grady County, Thomas County, Georgia; Leon County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 14, 2012, 1:42 PM EDT for Grady County, Thomas County, Georgia; Leon 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 outline as issued.

The facts

Issued
Jun 14, 2012, 1:42 PM EDT (17:42 UTC)
Expired
Jun 14, 2012, 2:15 PM EDT
In force
33 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Leon County, FL, Grady County, GA, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 41 km from the middle of the area, began a volume at 17:44 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 12:00Z, 5.7 hours before the alert went out and 40 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 12:00Z on 2012-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 678 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2012-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
678 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
1246 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

689 
WUUS52 KTAE 141742
SVRTAE
FLC073-GAC131-275-141815-
/O.NEW.KTAE.SV.W.0206.120614T1742Z-120614T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
142 PM EDT THU JUN 14 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LEON COUNTY IN FLORIDA...
  SOUTHWESTERN THOMAS COUNTY IN SOUTH CENTRAL GEORGIA...
  SOUTHEASTERN GRADY COUNTY IN SOUTHWEST GEORGIA...

* UNTIL 215 PM EDT

* AT 139 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR MONCRIEF...
  AND MOVING NORTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BEACHTON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY. PEOPLE OUTSIDE SHOULD MOVE INSIDE A STRONG BUILDING BUT
AWAY FROM WINDOWS.

&&

LAT...LON 3086 8425 3076 8392 3058 8414 3063 8428
TIME...MOT...LOC 1742Z 224DEG 12KT 3071 8414

$$

15-HARRIGAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 12:48 PM EDTSevere Thunderstorm WarningTAEBrooks, Lowndes27 min
Jun 14, 12:53 PM EDTSevere Thunderstorm WarningTAELowndes37 min
Jun 14, 1:08 PM EDTSevere Thunderstorm WarningTAEDecatur, Grady52 min
Jun 14, 1:45 PM EDTSevere Thunderstorm WarningTAEDougherty, Mitchell, Worth30 min
Jun 14, 3:00 PM EDTSevere Thunderstorm WarningTAEColquitt, Mitchell30 min
Jun 14, 3:28 PM EDTSevere Thunderstorm WarningTAEEarly, Miller23 min
Jun 14, 3:36 PM EDTSpecial Weather StatementTAEColquitt39 min
Jun 14, 4:40 PM EDTSpecial Weather StatementTAEBerrien, Cook, Tift50 min
Jun 14, 5:21 PM EDTSevere Thunderstorm WarningTAEQuitman, Randolph39 min
Jun 14, 5:57 PM EDTSpecial Weather StatementTAEQuitman33 min
Jun 14, 2:47 PM EDTSevere Thunderstorm WarningTAEJefferson, Leon43 min
Jun 14, 3:12 PM EDTSpecial Weather StatementTAELeon33 min
Jun 14, 3:57 PM EDTAreal Flood AdvisoryTAELeon2 hr
Jun 14, 5:15 PM EDTSevere Thunderstorm WarningTAEHolmes, Jackson, Washington45 min
Jun 14, 6:00 PM EDTSpecial Weather StatementTAEWashington45 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012Severe Thunderstorm Warnings in Florida, 2012Every severe thunderstorm warning in 2012

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.