Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 237, NWS Tallahassee, FL

July 3, 20124 counties in Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 3, 2012, 4:27 PM EDT for 4 counties in Florida. It was in force for 48 min. 5 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
Jul 3, 2012, 4:27 PM EDT (20:27 UTC)
Expired
Jul 3, 2012, 5:15 PM EDT
In force
48 min
Issued by
NWS Tallahassee, FL
Area
Storm-based polygon

Counties Gadsden County, FL, Leon County, FL, Liberty County, FL, Wakulla County, FL

The radar

The Tallahassee radar (KTLH), 38 km from the middle of the area, began a volume at 20:30 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
Jul 3, 4:36 PM EDTTSTM WND DMG4 W Bloxham, FLTREE DOWN NEAR BLUE CREEK RD. EAST OF HOSFORD CAUSING A POWER OUTAGE IN THE AREA.
Jul 3, 4:38 PM EDTTSTM WND DMG2 Ene Clio, FLTREE DOWN ON A POWERLINE LEANING AGAINST A HOME ALONG NORTHEAST DEWBER RD.
Jul 3, 4:38 PM EDTHAIL 0.75Telogia, FLDIME SIZE HAIL REPORTED NEAR TELOGIA.
Jul 3, 4:40 PM EDTHAIL 0.75Hosford, FLDIME SIZE HAIL REPORTED NEAR HOSFORD.
Jul 3, 4:45 PM EDTTSTM WND DMGHosford, FLTREE DOWN NEAR ROBERTS RD.

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 12:00Z, 8.5 hours before the alert went out and 41 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 2012-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1410 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 2012-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
1410 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1092 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
10 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.

939 
WUUS52 KTAE 032027
SVRTAE
FLC039-073-077-129-032115-
/O.NEW.KTAE.SV.W.0237.120703T2027Z-120703T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
427 PM EDT TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME SOUTH CENTRAL GADSDEN COUNTY IN FLORIDA...
  SOUTHWESTERN LEON COUNTY IN FLORIDA...
  CENTRAL LIBERTY COUNTY IN FLORIDA...
  NORTHWESTERN WAKULLA COUNTY IN FLORIDA...

* UNTIL 515 PM EDT

* AT 426 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 TELOGIA...
  AND MOVING EAST AT 10 MPH.

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

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 3042 8454 3019 8463 3031 8499 3049 8494
TIME...MOT...LOC 2027Z 287DEG 10KT 3035 8480

$$

42-DVD
1 follow-up statement
346 
WWUS52 KTAE 032054
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
454 PM EDT TUE JUL 3 2012

FLC039-032105-
/O.CAN.KTAE.SV.W.0237.000000T0000Z-120703T2115Z/
GADSDEN FL-
454 PM EDT TUE JUL 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTH CENTRAL GADSDEN
COUNTY IS CANCELLED...

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 THE
NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 3028 8490 3040 8487 3041 8468 3039 8468
      3039 8465 3042 8461 3042 8454 3019 8463
TIME...MOT...LOC 2055Z 287DEG 10KT 3027 8473

$$

FLC073-077-129-032115-
/O.CON.KTAE.SV.W.0237.000000T0000Z-120703T2115Z/
LEON FL-LIBERTY FL-WAKULLA FL-
454 PM EDT TUE JUL 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHWESTERN WAKULLA...CENTRAL LIBERTY AND SOUTHWESTERN LEON
COUNTIES...

AT 453 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 6 MILES SOUTHEAST OF CLIO...MOVING EAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLOXHAM

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 THE
NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT.
THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3028 8490 3040 8487 3041 8468 3039 8468
      3039 8465 3042 8461 3042 8454 3019 8463
TIME...MOT...LOC 2055Z 287DEG 10KT 3027 8473

$$

42-DVD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 2:39 PM EDTSevere Thunderstorm WarningTAEWashington31 min
Jul 3, 2:51 PM EDTSevere Thunderstorm WarningTAEBay, Calhoun, Washington39 min
Jul 3, 3:07 PM EDTSevere Thunderstorm WarningTAEJackson53 min
Jul 3, 3:32 PM EDTSevere Thunderstorm WarningTAEHolmes, Walton43 min
Jul 3, 3:39 PM EDTSevere Thunderstorm WarningTAEJackson51 min
Jul 3, 5:02 PM EDTSevere Thunderstorm WarningTAELeon, Wakulla43 min
Jul 3, 5:39 PM EDTSevere Thunderstorm WarningTAEGadsden, Leon36 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.