Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 252, NWS Tallahassee, FL

September 6, 2014Gadsden County, Leon County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Sep 6, 2014, 3:05 PM EDT for Gadsden County, Leon County, Florida. It was in force for 15 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
Sep 6, 2014, 3:05 PM EDT (19:05 UTC)
Expired
Sep 6, 2014, 3:20 PM EDT
In force
15 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Gadsden County, FL, Leon County, FL

The radar

The Tallahassee radar (KTLH), 13 km from the middle of the area, began a volume at 19:08 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, 7.1 hours before the alert went out and 15 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 2014-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 610 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 2014-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -9 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
610 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
964 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
11 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.

397 
WUUS52 KTAE 061905
SVRTAE
FLC039-073-061930-
/O.NEW.KTAE.SV.W.0252.140906T1905Z-140906T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
305 PM EDT SAT SEP 6 2014

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GADSDEN COUNTY IN FLORIDA...
  WEST CENTRAL LEON COUNTY IN FLORIDA...

* UNTIL 330 PM EDT

* AT 303 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED NEAR MIDWAY...AND MOVING EAST AT 5
  MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE IMMEDIATELY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS UNTIL
THIS STORM PASSES.

&&

LAT...LON 3049 8436 3037 8441 3043 8457 3052 8451
TIME...MOT...LOC 1905Z 292DEG 6KT 3046 8447

$$

08-LAMERS
1 follow-up statement
053 
WWUS52 KTAE 061920
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
320 PM EDT SAT SEP 6 2014

FLC039-073-061930-
/O.CAN.KTAE.SV.W.0252.000000T0000Z-140906T1930Z/
LEON FL-GADSDEN FL-
320 PM EDT SAT SEP 6 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GADSDEN AND WEST 
CENTRAL LEON COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED. HOWEVER IT MAY 
STILL PRODUCE HEAVY RAINFALL AND LIGHTNING. 

RELAY REPORTS OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE IN 
TALLAHASSEE AT (8 5 0) 9 4 2 8 8 3 3... OR YOU MAY CONTACT LAW 
ENFORCEMENT.

LAT...LON 3049 8436 3037 8441 3043 8457 3052 8451
TIME...MOT...LOC 1920Z 292DEG 6KT 3045 8444

$$

08-LAMERS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 9:35 AM EDTFlash Flood WatchTAEDixie, Lafayette, Madison, Taylor5 hr
Sep 6, 4:16 PM EDTSpecial Weather StatementTAEJackson29 min
Sep 6, 4:22 PM EDTSevere Thunderstorm WarningTAECalhoun, Jackson, Liberty36 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014

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.