Alert archive / Florida / Tornado Warnings in 2011
Tornado Warning 102, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Sep 4, 2011, 5:04 AM CDT for Okaloosa County, Florida. It was in force for 41 min. 1 report 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
- Sep 4, 2011, 5:04 AM CDT (10:04 UTC)
- Expired
- Sep 4, 2011, 5:45 AM CDT
- In force
- 41 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 61 km from the middle of the area, began a volume at 10:07 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 |
|---|---|---|---|
| Sep 4, 5:15 AM CDT | TORNADO | 2 Sse Crestview, FL | HOME OWNER REPORTED DAMAGE TO TREES, FENCE AND ROOF IN STEEPLECHASE SUBDIVISION NEAR CRESTVIEW FLORIDA. |
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 |
|---|---|---|---|
| Sep 3, 9:43 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 10.1 hours before the alert went out and 217 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.
- Mixed-layer CAPE
- 31 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1385 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
453
WFUS54 KMOB 041004
TORMOB
FLC091-041045-
/O.NEW.KMOB.TO.W.0102.110904T1004Z-110904T1045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
504 AM CDT SUN SEP 4 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* TORNADO WARNING FOR...
OKALOOSA COUNTY IN NORTHWEST FLORIDA...
* UNTIL 545 AM CDT
* AT 457 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CONTAINING MULTIPLE POTENTIAL
TORNADIC CIRCULATIONS THAT EXTENDED FROM 20 MILES EAST OF EAST
BREWTON TO 3 MILES NORTHWEST OF EGLIN AFB TO 3 MILES EAST OF
FORT WALTON BEACH...MOVING EAST AT 30 MPH. THE STRONGEST RADAR
INDICATED CIRCULATIONS WERE CURRENTLY NEAR HAROLD...EGLIN AIR
FORCE BASE AND JUST WEST OF NICEVILLE.
THIS LINE OF STORMS HAS A HISTORY OF PRODUCING BRIEF SHORT-LIVED
TORNADOES. IN ADDITION...STRAIGHT LINE WIND GUSTS AS HIGH AS 65
MPH HAVE OCCURRED ALONG BOWING SEGMENTS OF THIS LINE.
* LOCATIONS IMPACTED INCLUDE...
SHALIMAR... OCEAN CITY... LAKE LORRAINE...
CINCO BAYOU... WRIGHT... VALPARAISO...
NICEVILLE... LAUREL HILL... EGLIN AFB...
THIS INCLUDES INTERSTATE 10 BETWEEN MILE MARKERS 43 AND 67.
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 MANUFACTURED 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 700 AM CDT SUNDAY MORNING FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3045 8640 3044 8642 3048 8646 3045 8649
3045 8653 3042 8655 3043 8658 3040 8658
3041 8666 3055 8670 3058 8680 3099 8679
3099 8639
TIME...MOT...LOC 0958Z 270DEG 27KT 3099 8673 3071 8672
3059 8661 3039 8652
$$3 follow-up statements
808
WWUS54 KMOB 041021
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
521 AM CDT SUN SEP 4 2011
FLC091-041045-
/O.CON.KMOB.TO.W.0102.000000T0000Z-110904T1045Z/
OKALOOSA FL-
521 AM CDT SUN SEP 4 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR OKALOOSA
COUNTY...
AT 516 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF TORNADO PRODUCING STORMS EXTENDING FROM 15 MILES
NORTHWEST OF CRESTVIEW TO NICEVILLE TO DESTIN...MOVING NORTHEAST
AT 35 MPH.
THIS LINE OF THUNDERSTORMS HAS A HISTORY OF WIND DAMAGE AND
TORNADOES THAT SPIN UP SUDDENLY.
THE LINE WILL CONTINUE MOVING OVER EASTERN SECTIONS OF OKALOOSA
COUNTY AND CHOCTAWHATCHEE BAY THROUGH 545 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 AM CDT SUNDAY MORNING FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.
A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 400 PM CDT SUNDAY
AFTERNOON FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND
SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3053 8655 3064 8654 3088 8676 3099 8639
3045 8640 3044 8642 3048 8646 3045 8649
3045 8653 3042 8655 3043 8658 3040 8658
3041 8666
TIME...MOT...LOC 1018Z 220DEG 31KT 3094 8669 3080 8653
3063 8641 3052 8639 3040 8649
$$143
WWUS54 KMOB 041035
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
535 AM CDT SUN SEP 4 2011
FLC091-041045-
/O.CON.KMOB.TO.W.0102.000000T0000Z-110904T1045Z/
OKALOOSA FL-
535 AM CDT SUN SEP 4 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR EASTERN
OKALOOSA COUNTY...
AT 530 AM CDT...A LINE OF POTENTIAL TORNADO PRODUCING STORMS
EXTENDED FROM 16 MILES WEST OF FLORALA TO 11 MILES SOUTHEAST OF
CRESTVIEW TO NICEVILLE...MOVING NORTHEAST AT 35 MPH.
RADAR INDICATED CIRCULATIONS WERE LOCATED NEAR LAUREL HILL AND POND
CREEK. THE LINE WILL EXIT EASTERN OKALOOSA COUNTY BY 550 AM CDT.
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 700 AM CDT SUNDAY MORNING FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.
A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 400 PM CDT SUNDAY
AFTERNOON FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND
SOUTHEAST MISSISSIPPI.
&&
LAT...LON 3053 8655 3076 8648 3093 8658 3099 8639
3045 8640 3044 8642 3048 8646 3045 8649
3045 8653 3042 8655 3043 8658 3040 8658
3041 8666
TIME...MOT...LOC 1033Z 217DEG 32KT 3105 8660 3091 8644
3074 8632 3063 8630 3051 8640
$$692
WWUS54 KMOB 041041
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
541 AM CDT SUN SEP 4 2011
FLC091-041049-
/O.EXP.KMOB.TO.W.0102.000000T0000Z-110904T1045Z/
OKALOOSA FL-
541 AM CDT SUN SEP 4 2011
...THE TORNADO WARNING FOR EASTERN OKALOOSA COUNTY WILL BE ALLOWED
TO EXPIRE AT 545 AM CDT...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 AM CDT SUNDAY MORNING FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.
A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 400 PM CDT SUNDAY
AFTERNOON FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND
SOUTHEAST MISSISSIPPI.
LAT...LON 3053 8655 3076 8648 3093 8658 3099 8639
3045 8640 3044 8642 3048 8646 3045 8649
3045 8653 3042 8655 3043 8658 3040 8658
3041 8666
TIME...MOT...LOC 1039Z 217DEG 32KT 3109 8656 3095 8640
3078 8628 3067 8626 3055 8636
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 7:53 PM CDT | Areal Flood Warning | MOB | Escambia, Okaloosa, Santa Rosa | 6 hr |
| Sep 3, 9:11 PM CDT | River Flood Warning | MOB | Okaloosa, Santa Rosa | 12 hr |
| Sep 3, 9:11 PM CDT | River Flood Warning | MOB | Okaloosa, Santa Rosa | 12 hr |
| Sep 3, 9:11 PM CDT | River Flood Warning | MOB | Okaloosa | 49 hr |
| Sep 4, 3:57 AM CDT | Tornado Warning | MOB | Escambia, Santa Rosa | 42 min |
| Sep 4, 4:15 AM CDT | Tornado Warning | MOB | Escambia, Okaloosa, Santa Rosa | 60 min |
| Sep 4, 5:36 AM CDT | Flash Flood Warning | MOB | Okaloosa, Santa Rosa | 3 hr |
| Sep 4, 9:42 AM CDT | Tornado Warning | MOB | Okaloosa | 33 min |
| Sep 4, 4:15 PM CDT | Tornado Warning | MOB | Escambia | 60 min |
Nearby
Tornado Warnings in Florida, 2011Every tornado warning in 2011Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.