Alert archive / Florida / Tornado Warnings in 2011

Tornado Warning 22, NWS Mobile, AL

March 9, 2011Okaloosa County, Florida

NWS Mobile, AL issued this tornado warning at Mar 9, 2011, 11:41 AM CST for Okaloosa County, Florida. It was in force for 26 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: Mar 9, 2011, 11:41 AM CST (17:41 UTC)
Expired: Mar 9, 2011, 12:07 PM CST
In force: 26 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Okaloosa County, FL

The radar

The Eglin Afb radar (KEVX), 51 km from the middle of the area, began a volume at 17:41 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 watch it was issued in

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

Issued	Product	Office	Lasted
Mar 9, 7:26 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.7 hours before the alert went out and 208 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 611 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 348 m²/s²
0-3 km storm-relative helicity: 471 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.

704 
WFUS54 KMOB 091741
TORMOB
FLC091-091830-
/O.NEW.KMOB.TO.W.0022.110309T1741Z-110309T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1141 AM CST WED MAR 9 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL OKALOOSA COUNTY IN NORTHWEST FLORIDA...

* UNTIL 1230 PM CST

* AT 1136 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES NORTH OF
  NICEVILLE...OR 11 MILES NORTHWEST OF SEMINOLE...MOVING EAST AT 25
  MPH.

* THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM CST WEDNESDAY
AFTERNOON FOR SOUTHWEST ALABAMA AND NORTHWEST FLORIDA.

&&

LAT...LON 3057 8653 3069 8652 3074 8638 3065 8638
      3057 8638
TIME...MOT...LOC 1741Z 262DEG 22KT 3062 8647

$$

1 follow-up statement

717 
WWUS54 KMOB 091807
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1207 PM CST WED MAR 9 2011

FLC091-091817-
/O.CAN.KMOB.TO.W.0022.000000T0000Z-110309T1830Z/
OKALOOSA FL-
1207 PM CST WED MAR 9 2011

...THE TORNADO WARNING FOR EAST CENTRAL OKALOOSA COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM CST WEDNESDAY
AFTERNOON FOR SOUTHWEST ALABAMA AND NORTHWEST FLORIDA.

LAT...LON 3057 8653 3069 8652 3074 8638 3065 8638
      3057 8638
TIME...MOT...LOC 1807Z 262DEG 22KT 3064 8629

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 9, 9:02 AM CST	Severe Thunderstorm Warning	MOB	Escambia, Santa Rosa	58 min
Mar 9, 9:10 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa, Santa Rosa	65 min
Mar 9, 9:10 AM CST	Tornado Warning	MOB	Escambia	50 min
Mar 9, 9:16 AM CST	Tornado Warning	MOB	Escambia	44 min
Mar 9, 9:25 AM CST	Flash Flood Warning	MOB	Escambia, Santa Rosa	6 hr
Mar 9, 9:26 AM CST	Tornado Warning	MOB	Escambia, Santa Rosa	49 min
Mar 9, 9:40 AM CST	Tornado Warning	MOB	Escambia, Santa Rosa	50 min
Mar 9, 10:09 AM CST	Severe Thunderstorm Warning	MOB	Escambia, Okaloosa, Santa Rosa	66 min
Mar 9, 10:17 AM CST	Flash Flood Warning	MOB	Santa Rosa	6 hr
Mar 9, 10:30 AM CST	Tornado Warning	MOB	Okaloosa, Santa Rosa	32 min
Mar 9, 11:03 AM CST	Flash Flood Warning	MOB	Okaloosa	5 hr
Mar 9, 11:10 AM CST	Severe Thunderstorm Warning	MOB	Okaloosa	65 min
Mar 9, 11:14 AM CST	Tornado Warning	MOB	Escambia, Santa Rosa	61 min
Mar 9, 11:48 AM CST	Flash Flood Warning	MOB	Okaloosa, Santa Rosa	4 hr
Mar 9, 12:16 PM CST	Tornado Warning	MOB	Okaloosa, Santa Rosa	26 min

Nearby

Tornado Warnings in Florida, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.