Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 51, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 3:41 PM CDT for Clarke County, Washington County, Alabama. It was in force for 32 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
- Apr 15, 2011, 3:41 PM CDT (20:41 UTC)
- Expired
- Apr 15, 2011, 4:13 PM CDT
- In force
- 32 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Clarke County, AL, Washington County, AL
The radar
The Mobile radar (KMOB), 107 km from the middle of the area, began a volume at 20:43 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 |
|---|---|---|---|
| Apr 15, 11:21 AM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 8.7 hours before the alert went out and 206 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1553 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 365 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
221 WFUS54 KMOB 152041 TORMOB ALC025-129-152130- /O.NEW.KMOB.TO.W.0051.110415T2041Z-110415T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MOBILE AL 341 PM CDT FRI APR 15 2011 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A * TORNADO WARNING FOR... CENTRAL CLARKE COUNTY IN SOUTHWEST ALABAMA... THIS INCLUDES THE CITIES OF...JACKSON...GROVE HILL... EASTERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA... * UNTIL 430 PM CDT * AT 338 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTHEAST OF CHATOM...OR 11 MILES NORTHWEST OF MCINTOSH...MOVING NORTHEAST AT 45 MPH. * THE TORNADO WILL BE NEAR... CORTELUOU AROUND 350 PM CDT... SAINT STEPHENS AROUND 355 PM CDT... JACKSON AROUND 405 PM CDT... GROVE HILL AND WHATELY AROUND 425 PM 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 900 PM CDT FRIDAY EVENING FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI. && LAT...LON 3192 8790 3162 8758 3125 8816 3137 8827 TIME...MOT...LOC 2040Z 220DEG 39KT 3138 8817 $$
2 follow-up statements
969
WWUS54 KMOB 152108
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
408 PM CDT FRI APR 15 2011
ALC129-152117-
/O.CAN.KMOB.TO.W.0051.000000T0000Z-110415T2130Z/
WASHINGTON AL-
408 PM CDT FRI APR 15 2011
...THE TORNADO WARNING FOR EAST CENTRAL WASHINGTON COUNTY IS
CANCELLED...
AT 406 PM CDT...THE STORM THAT PROMPTED THE WARNING HAS MOVED EAST
OUT OF WASHINGTON COUNTY...THUS THE TORNADO WARNING HAS BEEN
CANCELLED FOR WASHINGTON COUNTY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3162 8758 3151 8791 3153 8793 3154 8796
3156 8801 3157 8802 3158 8801 3159 8802
3192 8790
TIME...MOT...LOC 2107Z 218DEG 36KT 3157 8798
$$
ALC025-152130-
/O.CON.KMOB.TO.W.0051.000000T0000Z-110415T2130Z/
CLARKE AL-
408 PM CDT FRI APR 15 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
CLARKE COUNTY...
AT 406 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
TORNADO WAS 6 MILES SOUTHWEST OF MCVAY...OR ABOUT 6 MILES NORTHWEST
OF JACKSON...MOVING NORTHEAST AT 40 MPH.
THE TORNADO WILL BE NEAR...
WINN...MCVAY AND TODDTOWN AROUND 415 PM CDT...
ZIMCO...CLARKSVILLE AND GROVE HILL AROUND 425 PM CDT...
PEACOCK AROUND 430 PM CDT...
THE SAFEST PLACE TO BE DURING A TORNADO IS ON THE LOWEST FLOOR OF A
STURDY BUILDING...PREFERABLY IN AN INTERIOR HALLWAY OR A ROOM SUCH AS
A CLOSET OR BATHROOM. IF POSSIBLE...GET UNDER A WORKBENCH OR OTHER
PIECE OF STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY
AND ALWAYS STAY AWAY FROM WINDOWS.
IF YOU ARE IN MOBILE HOME...EVACUATE IT AND GET ON THE LOWEST FLOOR
OF A NEARBY STURDY BUILDING OR IN AN UNDERGROUND STORM SHELTER. IF NO
SUBSTANTIAL SHELTER IS AVAILABLE AND A TORNADO IS FAST APPROACHING...
SEEK SHELTER IN A CULVERT...OR LIE FLAT IN THE NEAREST DITCH OR OTHER
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3162 8758 3151 8791 3153 8793 3154 8796
3156 8801 3157 8802 3158 8801 3159 8802
3192 8790
TIME...MOT...LOC 2107Z 218DEG 36KT 3157 8798
$$517
WWUS54 KMOB 152113
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
413 PM CDT FRI APR 15 2011
ALC025-152123-
/O.CAN.KMOB.TO.W.0051.000000T0000Z-110415T2130Z/
CLARKE AL-
413 PM CDT FRI APR 15 2011
...THE TORNADO WARNING FOR CENTRAL CLARKE COUNTY IS CANCELLED...
AT 413 PM CDT...THE STORM THAT PROMPTED THE WARNING HAS WEAKENED
BELOW SEVERE LIMITS...THUS THE TORNADO WARNING HAS BEEN CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3162 8758 3151 8791 3153 8793 3154 8796
3156 8801 3157 8802 3158 8801 3159 8802
3192 8790
TIME...MOT...LOC 2113Z 218DEG 36KT 3162 8794
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 10:41 PM CDT | Small Craft Advisory | MOB | 44 hr | |
| Apr 15, 10:20 AM CDT | Tornado Warning | MOB | Washington | 40 min |
| Apr 15, 10:50 AM CDT | Tornado Warning | MOB | Clarke, Washington | 40 min |
| Apr 15, 10:56 AM CDT | Tornado Warning | MOB | Choctaw | 49 min |
| Apr 15, 11:09 AM CDT | Tornado Warning | MOB | Washington | 51 min |
| Apr 15, 11:26 AM CDT | Tornado Warning | MOB | Clarke, Monroe | 49 min |
| Apr 15, 11:41 AM CDT | Tornado Warning | MOB | Choctaw | 64 min |
| Apr 15, 11:52 AM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 38 min |
| Apr 15, 12:07 PM CDT | Tornado Warning | MOB | Monroe | 38 min |
| Apr 15, 12:20 PM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 40 min |
| Apr 15, 12:35 PM CDT | Tornado Warning | MOB | Monroe, Wilcox | 24 min |
| Apr 15, 12:44 PM CDT | Tornado Warning | MOB | Washington | 46 min |
| Apr 15, 12:51 PM CDT | Tornado Warning | MOB | Clarke, Wilcox | 33 min |
| Apr 15, 1:09 PM CDT | Tornado Warning | MOB | Washington | 51 min |
| Apr 15, 1:22 PM CDT | Tornado Warning | MOB | Clarke, Washington | 21 min |
| Apr 15, 1:46 PM CDT | Tornado Warning | MOB | Clarke, Washington | 44 min |
| Apr 15, 2:06 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 27 min |
| Apr 15, 2:22 PM CDT | Tornado Warning | MOB | Clarke, Monroe, Wilcox | 38 min |
| Apr 15, 2:55 PM CDT | Tornado Warning | MOB | Monroe, Wilcox | 50 min |
| Apr 15, 3:18 PM CDT | Tornado Warning | MOB | Butler, Conecuh, Monroe, Wilcox | 57 min |
| Apr 15, 4:02 PM CDT | Tornado Warning | MOB | Choctaw | 58 min |
| Apr 15, 4:27 PM CDT | Tornado Warning | MOB | Clarke, Monroe | 48 min |
| Apr 15, 4:57 PM CDT | Tornado Warning | MOB | Choctaw | 42 min |
| Apr 15, 5:09 PM CDT | Tornado Warning | MOB | Butler, Conecuh, Monroe, Wilcox | 51 min |
| Apr 15, 5:44 PM CDT | Tornado Warning | MOB | Monroe, Wilcox | 31 min |
| Apr 15, 5:47 PM CDT | Tornado Warning | MOB | Choctaw | 58 min |
| Apr 15, 5:54 PM CDT | Tornado Warning | MOB | Wilcox | 51 min |
| Apr 15, 5:59 PM CDT | Tornado Warning | MOB | Butler | 26 min |
| Apr 15, 6:23 PM CDT | Tornado Warning | MOB | Wilcox | 32 min |
| Apr 15, 6:34 PM CDT | Tornado Warning | MOB | Choctaw | 41 min |
| Apr 15, 6:44 PM CDT | Tornado Warning | MOB | Choctaw, Clarke, Washington | 61 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.