Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 73, NWS Tallahassee, FL

March 14, 2012Leon County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 14, 2012, 8:27 PM EDT for Leon County, Florida. It was in force for 33 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 14, 2012, 8:27 PM EDT (00:27 UTC)
Expired
Mar 14, 2012, 9:00 PM EDT
In force
33 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

County Leon County, FL

The radar

The Tallahassee radar (KTLH), 29 km from the middle of the area, began a volume at 00:30 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.

What was reported inside it

TimeReportWhereRemark
Mar 14, 8:58 PM EDTTSTM WND DMG1 Nne Killearn Lakes, FLTREE DOWN ON DEER LAKE ROAD.
Mar 14, 9:02 PM EDTTSTM WND DMG1 Wsw Pisgah Church, FLUTILITY LINE DOWN AT THE INTERSECTION OF SAMS LANE AND BRADFORDVILLE ROAD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.5 hours before the alert went out and 28 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 2012-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 714 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 2012-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
714 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1865 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

040 
WUUS52 KTAE 150027
SVRTAE
FLC073-150100-
/O.NEW.KTAE.SV.W.0073.120315T0027Z-120315T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
827 PM EDT WED MAR 14 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LEON COUNTY IN FLORIDA...

* UNTIL 900 PM EDT

* AT 825 PM EDT...THE NATIONAL WEATHER SERVICE HAS DETECTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM
  WAS LOCATED NEAR IAMONIA...AND MOVING SOUTH AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE
  IAMONIA...CONCORD...MICCOSUKEE...KILLEARN LAKES...MOCCASIN GAP...
  PISGAH CHURCH AND BRADFORDVILLE

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 3053 8427 3069 8427 3069 8422 3068 8421
      3068 8411 3067 8405 3053 8402
TIME...MOT...LOC 0028Z 358DEG 8KT 3067 8417

$$

42-DVD
1 follow-up statement
148 
WWUS52 KTAE 150037
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
837 PM EDT WED MAR 14 2012

FLC073-150100-
/O.CON.KTAE.SV.W.0073.000000T0000Z-120315T0100Z/
LEON FL-
837 PM EDT WED MAR 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHEASTERN LEON COUNTY...

AT 835 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR IAMONIA...MOVING SOUTH AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MICCOSUKEE...LAKE IAMONIA...MOCCASIN GAP...CONCORD...KILLEARN
LAKES...BRADFORDVILLE AND PISGAH CHURCH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 3053 8427 3069 8427 3069 8422 3068 8421
      3068 8411 3067 8405 3053 8402
TIME...MOT...LOC 0037Z 015DEG 11KT 3063 8417

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 14, 8:13 PM EDTSpecial Weather StatementTAELeon32 min
Mar 14, 8:54 PM EDTSevere Thunderstorm WarningTAEJefferson, Leon36 min
Mar 14, 9:28 PM EDTSpecial Weather StatementTAELeon32 min
Mar 14, 9:58 PM EDTAreal Flood AdvisoryTAELeon62 min
Mar 14, 10:04 PM EDTSpecial Weather StatementTAELeon26 min
Mar 15, 5:11 PM EDTSpecial Weather StatementTAEGulf34 min
Mar 15, 5:26 PM EDTSevere Thunderstorm WarningTAEGulf, Liberty34 min
Mar 15, 5:59 PM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Gulf31 min
Mar 15, 6:54 PM EDTSpecial Weather StatementTAEBay51 min

Nearby

Severe 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.