Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 66, NWS Mobile, AL
NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 7:14 PM CDT for Washington County, Alabama; Greene County, Mississippi. It was in force for 36 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, 7:14 PM CDT (00:14 UTC)
- Expired
- Apr 15, 2011, 7:50 PM CDT
- In force
- 36 min
- Issued by
- NWS Mobile, AL
- Area
- Storm-based polygon
Counties Washington County, AL, Greene County, MS
The radar
The Mobile radar (KMOB), 89 km from the middle of the area, began a volume at 00:16 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 0.2 hours before the alert went out and 194 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
- 2774 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 697 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 318 m²/s²
- Significant tornado parameter
- 5.3
- Supercell composite
- 18.2
The text
As transmitted, in the capitals the NWS used until 2016.
876
WFUS54 KMOB 160014
TORMOB
ALC129-MSC041-160100-
/O.NEW.KMOB.TO.W.0066.110416T0014Z-110416T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
714 PM CDT FRI APR 15 2011
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
WASHINGTON COUNTY IN SOUTHWEST ALABAMA...
THIS INCLUDES THE CITY OF CHATOM...
* UNTIL 800 PM CDT
* AT 712 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES NORTH
OF LEAKESVILLE...OR 10 MILES SOUTH OF STATE LINE...MOVING NORTHEAST
AT 40 MPH.
* THE TORNADO WILL BE NEAR...
CHATOM AROUND 740 PM CDT...
SAINT STEPHENS AROUND 800 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 3144 8847 3144 8845 3145 8845 3168 8808
3160 8808 3158 8801 3157 8804 3153 8793
3149 8791 3118 8854 3133 8865
TIME...MOT...LOC 0014Z 237DEG 37KT 3131 8850
$$2 follow-up statements
610
WWUS54 KMOB 160033
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
733 PM CDT FRI APR 15 2011
MSC041-160042-
/O.CAN.KMOB.TO.W.0066.000000T0000Z-110416T0100Z/
GREENE MS-
733 PM CDT FRI APR 15 2011
...THE TORNADO WARNING FOR NORTHEASTERN GREENE COUNTY IS CANCELLED...
AT 730 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHEASTERN
GREENE COUNTY HAS MOVED EAST OUT OF THE COUNTY...THUS THE TORNADO
WARNING HAS BEEN CANCELLED FOR NORTHEASTERN GREENE COUNTY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY EVENING FOR
SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.
LAT...LON 3168 8808 3160 8808 3158 8801 3157 8804
3153 8795 3153 8793 3149 8791 3132 8837
3138 8840 3145 8840
TIME...MOT...LOC 0032Z 241DEG 34KT 3138 8833
$$
ALC129-160100-
/O.CON.KMOB.TO.W.0066.000000T0000Z-110416T0100Z/
WASHINGTON AL-
733 PM CDT FRI APR 15 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR NORTHERN
WASHINGTON COUNTY...
AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
TORNADO WAS 8 MILES SOUTHWEST OF CHATOM...MOVING NORTHEAST AT 40 MPH.
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 3168 8808 3160 8808 3158 8801 3157 8804
3153 8795 3153 8793 3149 8791 3132 8837
3138 8840 3145 8840
TIME...MOT...LOC 0032Z 241DEG 34KT 3138 8833
$$967
WWUS54 KMOB 160050
SVSMOB
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
750 PM CDT FRI APR 15 2011
ALC129-160100-
/O.CAN.KMOB.TO.W.0066.000000T0000Z-110416T0100Z/
WASHINGTON AL-
750 PM CDT FRI APR 15 2011
...THE TORNADO WARNING FOR NORTHERN WASHINGTON COUNTY IS CANCELLED...
AT 750 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR NORTHERN
WASHINGTON COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE
TORNADO WARNING HAS BEEN CANCELLED FOR NORTHERN WASHINGTON COUNTY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.
LAT...LON 3168 8808 3160 8808 3158 8801 3157 8804
3153 8795 3153 8793 3149 8791 3132 8837
3138 8840 3145 8840
TIME...MOT...LOC 0050Z 241DEG 34KT 3146 8816
$$The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:24 PM CDT | Tornado Warning | MOB | Mobile, Washington | 51 min |
| Apr 15, 7:36 PM CDT | Severe Thunderstorm Warning | MOB | Wilcox | 39 min |
| Apr 15, 7:39 PM CDT | Tornado Warning | MOB | Clarke, Monroe, Wilcox | 29 min |
| Apr 15, 7:54 PM CDT | Tornado Warning | MOB | Clarke, Monroe, Wilcox | 51 min |
| Apr 15, 8:11 PM CDT | Tornado Warning | MOB | Washington | 49 min |
| Apr 15, 8:28 PM CDT | Tornado Warning | MOB | Washington | 47 min |
| Apr 15, 8:50 PM CDT | Tornado Warning | MOB | Baldwin, Clarke, Escambia, Mobile, Monroe, Washington | 55 min |
| Apr 15, 9:15 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Mobile, Washington | 45 min |
| Apr 15, 9:18 PM CDT | Flash Flood Warning | MOB | Washington | 117 min |
| Apr 15, 9:38 PM CDT | Tornado Warning | MOB | Conecuh, Monroe | 52 min |
| Apr 15, 9:41 PM CDT | Tornado Warning | MOB | Clarke, Washington | 49 min |
| Apr 15, 9:59 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Clarke, Mobile, Monroe, Washington | 61 min |
| Apr 15, 10:05 PM CDT | Tornado Warning | MOB | Baldwin, Clarke, Mobile, Monroe, Washington | 55 min |
| Apr 15, 10:24 PM CDT | Tornado Warning | MOB | Butler, Clarke, Conecuh, Monroe, Wilcox | 51 min |
| Apr 15, 10:32 PM CDT | Tornado Warning | MOB | Baldwin, Mobile | 33 min |
| Apr 15, 10:56 PM CDT | Severe Thunderstorm Warning | MOB | Baldwin, Conecuh, Escambia, Mobile, Monroe | 64 min |
| Apr 15, 10:59 PM CDT | Tornado Warning | MOB | Baldwin, Conecuh, Escambia, Monroe | 61 min |
| Apr 15, 11:10 PM CDT | Tornado Warning | MOB | Butler, Crenshaw | 16 min |
| Apr 15, 11:33 PM CDT | Severe Thunderstorm Warning | MOB | Butler, Crenshaw | 42 min |
| Apr 15, 11:45 PM CDT | Tornado Warning | MOB | Conecuh, Covington, Escambia | 60 min |
| Apr 16, 12:00 AM CDT | Severe Thunderstorm Warning | MOB | Butler, Conecuh, Covington, Crenshaw | 60 min |
| Apr 16, 12:11 AM CDT | Severe Thunderstorm Warning | MOB | Crenshaw | 32 min |
| Apr 16, 12:38 AM CDT | Tornado Warning | MOB | Covington | 52 min |
| Apr 16, 1:01 AM CDT | Severe Thunderstorm Warning | MOB | Covington | 33 min |
| Apr 15, 7:53 PM CDT | Tornado Warning | MOB | Greene, Perry | 37 min |
| Apr 15, 8:36 PM CDT | Tornado Warning | MOB | Greene, Perry | 54 min |
| Apr 15, 8:42 PM CDT | Tornado Warning | MOB | George, Greene, Perry | 63 min |
Nearby
Tornado Warnings in Alabama, 2011Tornado Warnings in Mississippi, 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.