Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 44, NWS Mobile, AL

October 18, 2007Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Oct 18, 2007, 9:18 AM CDT for Santa Rosa County, Florida. It was in force for 42 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, 9:18 AM CDT (14:18 UTC)
Expired
Oct 18, 2007, 10:00 AM CDT
In force
42 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon

County Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 97 km from the middle of the area, began a volume at 14:18 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, 2.3 hours before the alert went out and 253 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°0°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 181419
TORMOB
FLC113-181500-
/O.NEW.KMOB.TO.W.0044.071018T1418Z-071018T1500Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL SANTA ROSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1000 AM CDT

* AT 912 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
  SOUTHWEST OF HAROLD...OR ABOUT 8 MILES NORTHWEST OF NAVARRE...
  MOVING NORTHEAST AT 20 MPH.

* THE TORNADO WILL BE NEAR...
  HAROLD BY 950 AM 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.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL 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 3046 8697 3048 8699 3048 8701 3050 8703
      3078 8679 3054 8679 3044 8694
TIME...MOT...LOC 1418Z 221DEG 18KT 3050 8696

$$
JP/DM

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, 9:51 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, 11:20 AM CDTTornado WarningMOBOkaloosa40 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.