Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 91, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Sep 3, 2011, 2:00 PM CDT for Mobile County, Alabama. It was in force for 16 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 3, 2011, 2:00 PM CDT (19:00 UTC)
- Expired
- Sep 3, 2011, 2:16 PM CDT
- In force
- 16 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
County Mobile County, AL
The radar
The Mobile radar (KMOB), 12 km from the middle of the area, began a volume at 19:01 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 3, 9:41 AM CDT | Tornado Watch | SPC | 12 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.0 hours before the alert went out and 138 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
- 850 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 477 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 286 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 7.0
The text
As transmitted, in the capitals the NWS used until 2016.
941 WFUS54 KMOB 031900 TORMOB ALC097-031930- /O.NEW.KMOB.TO.W.0091.110903T1900Z-110903T1930Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 200 PM CDT SAT SEP 3 2011 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... WEST CENTRAL MOBILE COUNTY IN SOUTHWEST ALABAMA... * UNTIL 230 PM CDT * AT 200 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES NORTHWEST OF TILLMANS CORNER...OR 2 MILES SOUTHEAST OF TANNER WILLIAMS...MOVING NORTHWEST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... TANNER WILLIAMS... 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 1000 PM CDT SATURDAY EVENING FOR SOUTHWEST ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3065 8841 3093 8842 3071 8824 3063 8833 TIME...MOT...LOC 1900Z 145DEG 29KT 3068 8832 $$
2 follow-up statements
619
WWUS54 KMOB 031905
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
205 PM CDT SAT SEP 3 2011
ALC097-031930-
/O.CON.KMOB.TO.W.0091.000000T0000Z-110903T1930Z/
MOBILE AL-
205 PM CDT SAT SEP 3 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR WEST
CENTRAL MOBILE COUNTY...
AT 205 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR TANNER WILLIAMS...
OR 10 MILES NORTHWEST OF TILLMANS CORNER...MOVING NORTHWEST AT 35
MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILMER...WARLEY AND MOFFET
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHWEST ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
&&
LAT...LON 3067 8841 3091 8842 3092 8842 3071 8828
3068 8832
TIME...MOT...LOC 1905Z 145DEG 29KT 3071 8835
$$750
WWUS54 KMOB 031916
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
216 PM CDT SAT SEP 3 2011
ALC097-031926-
/O.CAN.KMOB.TO.W.0091.000000T0000Z-110903T1930Z/
MOBILE AL-
216 PM CDT SAT SEP 3 2011
...THE TORNADO WARNING FOR WEST CENTRAL MOBILE COUNTY IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHWEST ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
LAT...LON 3067 8841 3091 8842 3092 8842 3071 8828
3068 8832
TIME...MOT...LOC 1916Z 145DEG 29KT 3078 8841
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 10:37 PM CDT | Tropical Storm Warning | MOB | 47 hr | |
| Sep 3, 1:44 AM CDT | Special Marine Warning | MOB | 46 min | |
| Sep 3, 2:13 AM CDT | Special Marine Warning | MOB | 47 min | |
| Sep 3, 3:38 AM CDT | Special Marine Warning | MOB | 22 min | |
| Sep 3, 4:00 AM CDT | Special Marine Warning | MOB | 30 min | |
| Sep 3, 4:31 AM CDT | Special Marine Warning | MOB | 44 min | |
| Sep 3, 9:15 AM CDT | River Flood Warning | MOB | Baldwin | 24 hr |
| Sep 3, 9:16 AM CDT | River Flood Warning | MOB | Baldwin | 24 hr |
| Sep 3, 9:19 AM CDT | River Flood Warning | MOB | Baldwin | 24 hr |
| Sep 3, 10:59 AM CDT | Special Marine Warning | MOB | 46 min | |
| Sep 3, 12:14 PM CDT | Special Marine Warning | MOB | 46 min | |
| Sep 3, 12:53 PM CDT | Tornado Warning | MOB | Mobile | 22 min |
| Sep 3, 1:00 PM CDT | Special Marine Warning | MOB | 21 min | |
| Sep 3, 1:29 PM CDT | Special Marine Warning | MOB | 61 min | |
| Sep 3, 1:50 PM CDT | River Flood Warning | MOB | Mobile | 31 hr |
| Sep 3, 2:14 PM CDT | Tornado Warning | MOB | Mobile | 33 min |
| Sep 3, 2:19 PM CDT | Flash Flood Warning | MOB | Mobile | 4 hr |
| Sep 3, 4:10 PM CDT | Special Marine Warning | MOB | 15 min | |
| Sep 3, 4:53 PM CDT | Flash Flood Warning | MOB | Mobile | 3 hr |
| Sep 3, 5:00 PM CDT | Special Marine Warning | MOB | 45 min | |
| Sep 3, 5:33 PM CDT | Special Marine Warning | MOB | 42 min | |
| Sep 3, 6:06 PM CDT | Special Marine Warning | MOB | 39 min | |
| Sep 3, 6:09 PM CDT | Tornado Warning | MOB | Mobile | 51 min |
Nearby
Tornado Warnings in Alabama, 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.