Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 46, NWS Mobile, AL

October 18, 2007Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Oct 18, 2007, 11:20 AM CDT for Okaloosa County, Florida. It was in force for 40 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
Oct 18, 2007, 11:20 AM CDT (16:20 UTC)
Expired
Oct 18, 2007, 12:00 PM CDT
In force
40 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 73 km from the middle of the area, began a volume at 16:19 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, 4.3 hours before the alert went out and 228 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 2007-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 224 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 2007-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
224 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
770 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KMOB 181620
TORMOB
FLC091-181700-
/O.NEW.KMOB.TO.W.0046.071018T1620Z-071018T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1120 AM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
  THIS INCLUDES THE CITY OF FORT WALTON BEACH...

* UNTIL NOON CDT

* AT 1120 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES
  SOUTHWEST OF MARY ESTHER...OR ABOUT 8 MILES SOUTHEAST OF NAVARRE...
  MOVING NORTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  MARY ESTHER BY 1140 AM CDT...
  WRIGHT...OCEAN CITY AND 6 MILES NORTHWEST OF FORT WALTON BEACH BY
  1150 AM CDT...
  7 MILES NORTHWEST OF EGLIN AFB AND 9 MILES WEST OF VALPARAISO BY
  NOON CDT...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3044 8679 3066 8668 3054 8639 3038 8660
      3039 8662 3039 8669 3037 8670 3038 8679
TIME...MOT...LOC 1620Z 211DEG 18KT 3034 8677

$$
2 follow-up statements
000 
WWUS54 KMOB 181636
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1136 AM CDT THU OCT 18 2007

FLC091-181700-
/O.CON.KMOB.TO.W.0046.000000T0000Z-071018T1700Z/
OKALOOSA FL-
1136 AM CDT THU OCT 18 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR SOUTHERN
OKALOOSA COUNTY...

AT 1133 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS MOVING ONSHORE JUST WEST OF 
MARY ESTHER...ABOUT 8 MILES WEST OF FORT WALTON BEACH...MOVING 
NORTHEAST AT 20 MPH.

THE TORNADO WILL BE NEAR...
  WRIGHT...OCEAN CITY AND 6 MILES NORTHWEST OF FORT WALTON BEACH BY
  1150 AM CDT...
  7 MILES NORTHWEST OF EGLIN AFB AND 9 MILES WEST OF VALPARAISO BY
  NOON CDT...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3040 8675 3043 8676 3065 8668 3066 8667
      3061 8658 3054 8639 3040 8660 3039 8672
TIME...MOT...LOC 1636Z 211DEG 18KT 3042 8671

$$
000 
WWUS54 KMOB 181700
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1156 AM CDT THU OCT 18 2007

FLC091-181706-
/O.EXP.KMOB.TO.W.0046.000000T0000Z-071018T1700Z/
OKALOOSA FL-
1156 AM CDT THU OCT 18 2007

...THE TORNADO WARNING FOR SOUTHERN OKALOOSA COUNTY WILL BE ALLOWED 
TO EXPIRE AT NOON CDT...

NATIONAL WEATHER SERVICE DOPPLER WEATHER RADAR INDICATES THE 
ROTATION IN THE STORM HAS WEAKENED SIGNIFICANTLY OVER THE PAST 
SEVERAL MINUTES.  NO TORNADO SIGHTINGS OR DAMAGE REPORTS HAVE BEEN 
RECEIVED WITH THIS STORM.  AT 1156 AM...THE STORM WAS LOCATED JUST 
NORTH OF WRIGHT...AND CONTINUED MOVING NORTHEAST AT 20 MPH.  

STAY TUNED FOR ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS FROM THE 
NATIONAL WEATHER SERVICE. 

LAT...LON 3040 8675 3043 8676 3065 8668 3066 8667
      3061 8658 3054 8639 3040 8660 3039 8672
TIME...MOT...LOC 1656Z 220DEG 24KT 3052 8660

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 18, 1:30 AM CDTSpecial Marine WarningMOB90 min
Oct 18, 3:23 AM CDTSpecial Marine WarningMOB97 min
Oct 18, 6:23 AM CDTSpecial Marine WarningMOB67 min
Oct 18, 7:35 AM CDTSpecial Marine WarningMOB25 min
Oct 18, 8:24 AM CDTSevere Thunderstorm WarningMOBEscambia, Santa Rosa51 min
Oct 18, 8:58 AM CDTSpecial Marine WarningMOB62 min
Oct 18, 9:11 AM CDTTornado WarningMOBEscambia, Santa Rosa34 min
Oct 18, 9:18 AM CDTTornado WarningMOBSanta Rosa42 min
Oct 18, 9:51 AM CDTSevere Thunderstorm WarningMOBOkaloosa, Santa Rosa39 min
Oct 18, 10:10 AM CDTTornado WarningMOBEscambia, Santa Rosa35 min
Oct 18, 10:39 AM CDTSevere Thunderstorm WarningMOBOkaloosa36 min
Oct 18, 10:45 AM CDTSpecial Marine WarningMOB30 min
Oct 18, 11:01 AM CDTSpecial Marine WarningMOB89 min
Oct 18, 11:30 AM CDTTornado WarningMOBEscambia, Santa Rosa45 min
Oct 18, 12:11 PM CDTSpecial Marine WarningMOB94 min
Oct 18, 1:47 PM CDTSpecial Marine WarningMOB88 min
Oct 18, 3:19 PM CDTSpecial Marine WarningMOB86 min
Oct 18, 3:52 PM CDTSpecial Marine WarningMOB83 min
Oct 18, 5:44 PM CDTSevere Thunderstorm WarningMOBEscambia46 min

Nearby

Tornado Warnings in Florida, 2007Every tornado warning in 2007Tornadoes in 2007

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.