Alert archive / Florida / Tornado Warnings in 2015

Tornado Warning 9, NWS Tallahassee, FL

April 19, 2015Walton County, Washington County, Florida

NWS Tallahassee, FL issued this tornado warning at Apr 19, 2015, 8:24 AM CDT for Walton County, Washington County, Florida. It was in force for 24 min. 3 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: Apr 19, 2015, 8:24 AM CDT (13:24 UTC)
Expired: Apr 19, 2015, 8:48 AM CDT
In force: 24 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon

Counties Walton County, FL, Washington County, FL

The radar

The Eglin Afb radar (KEVX), 8 km from the middle of the area, began a volume at 13:20 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
Apr 19, 8:25 AM CDT	TSTM WND DMG	Bruce, FL	POSSIBLE TORNADO. 1/4 MI DAMAGE PATH WITH TREES AND POWER LINES DOWN NEAR BRUCE ALONG HWY 81 N.
Apr 19, 8:25 AM CDT	TORNADO 0	1 Nne Bruce, FL	TREE DAMAGE EARLIER REPORTED BY BROADCAST MEDIA DETERMINED TO BE ASSOCIATED WITH A TORNADO. RATED EF0. 1/4 MILE DAMAGE PATH WITH TREES AND POWER LINES DOWNED ALONG HIGHWAY 81 JUST NORTH OF BRUCE. ESTIMATED 1 MINUTE DURATION.
Apr 19, 8:42 AM CDT	TSTM WND DMG	1 Ne Bruce, FL	SOCIAL MEDIA PICTURE OF TREES DOWN ON HIGHWAY 81 JUST NORTH OF HIGHWAY 20.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 19, 6:57 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 1.4 hours before the alert went out and 162 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: 760 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 636 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

549 
WFUS52 KTAE 191324
TORTAE
FLC131-133-191400-
/O.NEW.KTAE.TO.W.0009.150419T1324Z-150419T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
824 AM CDT SUN APR 19 2015

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WALTON COUNTY IN THE PANHANDLE OF FLORIDA...
  WEST CENTRAL WASHINGTON COUNTY IN THE PANHANDLE OF FLORIDA...

* UNTIL 900 AM CDT
    
* AT 824 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 15
  MILES NORTHEAST OF SANTA ROSA BEACH...AND MOVING NORTH AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LIVE OAK...MILLERS FERRY...RED BAY...EUCHEEANNA AND BRUCE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3042 8598 3046 8609 3067 8609 3060 8579
TIME...MOT...LOC 1324Z 202DEG 13KT 3050 8603 

$$

15-HARRIGAN

1 follow-up statement

644 
WWUS52 KTAE 191348
SVSTAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
848 AM CDT SUN APR 19 2015

FLC131-133-191358-
/O.CAN.KTAE.TO.W.0009.000000T0000Z-150419T1400Z/
WALTON FL-WASHINGTON FL-
848 AM CDT SUN APR 19 2015

...THE TORNADO WARNING FOR SOUTHEASTERN WALTON AND WEST CENTRAL
WASHINGTON COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS TO BE CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3042 8598 3046 8609 3067 8609 3060 8579
TIME...MOT...LOC 1346Z 202DEG 13KT 3058 8599 

$$

15-HARRIGAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 3:09 AM CDT	Rip Current Statement	TAE	Bay, Franklin, Gulf, Walton	40 hr
Apr 19, 6:46 AM CDT	Special Marine Warning	TAE		89 min
Apr 19, 7:20 AM CDT	Special Marine Warning	TAE		115 min
Apr 19, 7:29 AM CDT	Tornado Warning	TAE	Walton	31 min
Apr 19, 8:01 AM CDT	Severe Thunderstorm Warning	TAE	Bay, Walton, Washington	29 min
Apr 19, 9:07 AM CDT	Special Marine Warning	TAE		83 min
Apr 19, 10:21 AM CDT	Special Marine Warning	TAE		114 min
Apr 19, 10:48 AM CDT	Tornado Warning	TAE	Gadsden, Leon, Liberty, Wakulla	12 min
Apr 19, 11:19 AM CDT	Special Marine Warning	TAE		116 min
Apr 19, 11:55 AM CDT	Severe Thunderstorm Warning	TAE	Leon	35 min
Apr 19, 11:59 AM CDT	Tornado Warning	TAE	Leon	13 min
Apr 19, 12:31 PM CDT	River Flood Warning	TAE	Calhoun, Franklin, Gulf, Liberty	9 days
Apr 19, 12:44 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson, Madison	46 min
Apr 19, 12:48 PM CDT	Special Marine Warning	TAE		117 min
Apr 19, 1:15 PM CDT	Severe Thunderstorm Warning	TAE	Lafayette, Madison, Taylor	60 min
Apr 19, 1:56 PM CDT	Severe Thunderstorm Warning	TAE	Dixie, Lafayette, Madison, Taylor	64 min
Apr 19, 2:01 PM CDT	Severe Thunderstorm Warning	TAE	Madison	29 min

Nearby

Tornado Warnings in Florida, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.