Alert archive / Florida / Tornado Warnings in 2011
Tornado Warning 105, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Sep 4, 2011, 9:42 AM CDT for Okaloosa County, Florida. It was in force for 33 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
- Sep 4, 2011, 9:42 AM CDT (14:42 UTC)
- Expired
- Sep 4, 2011, 10:15 AM CDT
- In force
- 33 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 53 km from the middle of the area, began a volume at 14:43 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 |
|---|---|---|---|
| Sep 4, 5:05 AM CDT | Tornado Watch | SPC | 11 hr |
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 2.7 hours before the alert went out and 205 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
- 1223 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 468 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
615
WFUS54 KMOB 041442
TORMOB
FLC091-041515-
/O.NEW.KMOB.TO.W.0105.110904T1442Z-110904T1515Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
942 AM CDT SUN SEP 4 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN OKALOOSA COUNTY IN NORTHWEST FLORIDA...
* UNTIL 1015 AM CDT
* AT 939 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES SOUTH OF
DESTIN...OR 11 MILES SOUTHEAST OF SHALIMAR...MOVING NORTH AT 30
MPH.
* LOCATIONS IMPACTED INCLUDE...
NICEVILLE... DESTIN...
A POSSIBLE TORNADO MAY BE DEVELOPING AS SOON AS THE CORE OF THIS
STORM APPROACHES THE SHORE. PLEASE TAKE COVER IF YOU ARE IN THE PATH
OF THIS STORM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SUNDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3038 8652 3042 8650 3041 8645 3044 8642
3048 8645 3046 8650 3053 8648 3052 8639
3045 8639 3044 8642 3042 8644 3040 8639
3038 8639 3037 8640
TIME...MOT...LOC 1441Z 190DEG 25KT 3034 8645
$$2 follow-up statements
475
WWUS54 KMOB 041506
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1006 AM CDT SUN SEP 4 2011
FLC091-041515-
/O.CON.KMOB.TO.W.0105.000000T0000Z-110904T1515Z/
OKALOOSA FL-
1006 AM CDT SUN SEP 4 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 AM CDT FOR
SOUTHEASTERN OKALOOSA COUNTY...
AT 1002 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A POSSIBLE TORNADO JUST ABOUT TO ENTER THE SOUTH SIDE OF
CHOCTAWHATCHEE BAY. THIS TORNADO WAS LOCATED TWO MILES EAST OF
DESTIN...MOVING NORTHEAST AT 15 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
POSTIL...DANA POINT...SEMINOLE AND NICEVILLE
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SUNDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3038 8652 3042 8650 3041 8645 3044 8642
3048 8645 3046 8650 3053 8648 3052 8639
3045 8639 3044 8642 3042 8644 3040 8639
3038 8639 3037 8640
TIME...MOT...LOC 1503Z 192DEG 11KT 3041 8640
$$323
WWUS54 KMOB 041515
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1015 AM CDT SUN SEP 4 2011
FLC091-041524-
/O.EXP.KMOB.TO.W.0105.000000T0000Z-110904T1515Z/
OKALOOSA FL-
1015 AM CDT SUN SEP 4 2011
...THE TORNADO WARNING FOR SOUTHEASTERN OKALOOSA COUNTY WILL EXPIRE
AT 1015 AM CDT...
THE STRONGEST PART OF THE STORM CAPABLE OF PRODUCING A TORNADO HAS
EXITED OKALOOSA COUNTY...BUT HEAVY...BLINDING RAIN CONTINUES TO BE A
THREAT. ADDITIONAL WARNINGS MAY BE NECESSARY IF REDEVELOPMENT
OCCURS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT SUNDAY AFTERNOON
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
LAT...LON 3038 8652 3042 8650 3041 8645 3044 8642
3048 8645 3046 8650 3053 8648 3052 8639
3045 8639 3044 8642 3042 8644 3040 8639
3038 8639 3037 8640
TIME...MOT...LOC 1514Z 192DEG 11KT 3044 8639
$$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, 5:04 AM CDT | Tornado Warning | MOB | Okaloosa | 41 min |
| Sep 4, 5:36 AM CDT | Flash Flood Warning | MOB | Okaloosa, Santa Rosa | 3 hr |
| 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.