Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 232, NWS Tallahassee, FL

July 3, 2012Washington County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Jul 3, 2012, 1:39 PM CDT for Washington County, Florida. It was in force for 31 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: Jul 3, 2012, 1:39 PM CDT (18:39 UTC)
Expired: Jul 3, 2012, 2:10 PM CDT
In force: 31 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

County Washington County, FL

The radar

The Eglin Afb radar (KEVX), 20 km from the middle of the area, began a volume at 18:40 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

Time	Report	Where	Remark
Jul 3, 1:45 PM CDT	TSTM WND DMG	2 Se Riverside, FL	TREE LIMBS AND SOME SMALL PINE TREES DOWN IN THE ROLLING PINES COMMUNITY NEAR THE SUNNY HILLS GOLF COURSE ALONG HIGHWAY 77.
Jul 3, 1:55 PM CDT	TSTM WND DMG	2 Nnw Vernon, FL	TREE DOWN ON TOP OF POWERLINES CAUSING A FIRE.

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, 6.7 hours before the alert went out and 138 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

526 
WUUS52 KTAE 031839
SVRTAE
FLC133-031930-
/O.NEW.KTAE.SV.W.0232.120703T1839Z-120703T1930Z/

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

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WASHINGTON COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 230 PM CDT

* AT 138 PM CDT...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 7 MILES SOUTH OF
  VERNON...OR NEAR HOLMES VALLEY...AND MOVING NORTH AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
  HOPE...SPRING HOLLOW...SMYRNA...SYLVANIA...WAUSAU...GILBERTS
  MILL...BRADFORD...WHITEHEAD CROSSROADS...BROCK CROSSROAD...ORANGE
  HILL AND HINSONS CROSSROADS.

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 3071 8584 3068 8545 3044 8552 3044 8583
      3070 8585
TIME...MOT...LOC 1839Z 181DEG 8KT 3052 8573

$$

42-DVD

1 follow-up statement

391 
WWUS52 KTAE 031910
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
210 PM CDT TUE JUL 3 2012

FLC133-031920-
/O.CAN.KTAE.SV.W.0232.000000T0000Z-120703T1930Z/
WASHINGTON FL-
210 PM CDT TUE JUL 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON COUNTY IS
CANCELLED...

THE STORM HAS WEAKENED BELOW SEVERE LIMITS.

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 3071 8584 3068 8545 3044 8552 3044 8583
      3070 8585
TIME...MOT...LOC 1910Z 181DEG 8KT 3059 8573

$$

42-DVD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:51 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Washington	39 min
Jul 3, 2:07 PM CDT	Severe Thunderstorm Warning	TAE	Jackson	53 min
Jul 3, 2:32 PM CDT	Severe Thunderstorm Warning	TAE	Holmes, Walton	43 min
Jul 3, 2:39 PM CDT	Severe Thunderstorm Warning	TAE	Jackson	51 min
Jul 3, 3:27 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon, Liberty, Wakulla	48 min
Jul 3, 4:02 PM CDT	Severe Thunderstorm Warning	TAE	Leon, Wakulla	43 min
Jul 3, 4:39 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon	36 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012 Every 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.