Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 68, NWS Mobile, AL

April 15, 2011Clarke County, Monroe County, Wilcox County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 7:39 PM CDT for Clarke County, Monroe County, Wilcox County, Alabama. It was in force for 29 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, 7:39 PM CDT (00:39 UTC)
Expired: Apr 15, 2011, 8:08 PM CDT
In force: 29 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Clarke County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 139 km from the middle of the area, began a volume at 00:39 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

Jackson, MS (KJAN), launched 00:00Z, 0.7 hours before the alert went out and 236 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 173 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 1488 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

580 
WFUS54 KMOB 160039
TORMOB
ALC025-099-131-160145-
/O.NEW.KMOB.TO.W.0068.110416T0039Z-110416T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
739 PM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL MONROE COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHWESTERN WILCOX COUNTY IN SOUTH CENTRAL ALABAMA...
  NORTHERN CLARKE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITY OF GROVE HILL...

* UNTIL 845 PM CDT

* AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 15 MILES WEST OF
  GROVE HILL...OR NEAR COFFEEVILLE...MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  GROVE HILL AROUND 755 PM CDT...
  FULTON AROUND 800 PM CDT...
  YELLOW BLUFF AROUND 830 PM CDT...
  VREDENBURGH AROUND 835 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 3201 8741 3170 8726 3167 8763 3172 8806
      3181 8808
TIME...MOT...LOC 0039Z 258DEG 34KT 3179 8798

$$

2 follow-up statements

138 
WWUS54 KMOB 160050 RRA
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
750 PM CDT FRI APR 15 2011

ALC025-099-131-160145-
/O.CON.KMOB.TO.W.0068.000000T0000Z-110416T0145Z/
MONROE AL-CLARKE AL-WILCOX AL-
750 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN WILCOX...EAST CENTRAL CLARKE AND NORTH CENTRAL MONROE
COUNTIES...

AT 749 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR CHILTON...OR ABOUT 9 MILES SOUTHWEST OF
THOMASVILLE...MOVING NORTHEAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  RURAL AROUND 800 PM CDT...
  ROUNDHILL AROUND 805 PM CDT...
  HESTLE AROUND 810 PM CDT...
  CULPEPER AROUND 815 PM CDT...
  MACMILLAN AROUND 820 PM CDT...
  YELLOW BLUFF AND SHEPPARD AROUND 825 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3201 8741 3173 8729 3170 8765 3176 8786
      3186 8791
TIME...MOT...LOC 0051Z 247DEG 35KT 3185 8785

$$

046 
WWUS54 KMOB 160108
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
808 PM CDT FRI APR 15 2011

ALC025-099-131-160117-
/O.CAN.KMOB.TO.W.0068.000000T0000Z-110416T0145Z/
MONROE AL-CLARKE AL-WILCOX AL-
808 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR SOUTHWESTERN WILCOX...EAST CENTRAL CLARKE
AND NORTH CENTRAL MONROE COUNTIES IS CANCELLED...

THIS TORNADO WARNING HAS BEEN REPLACED BY ANOTHER TORNADO WARNING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3201 8741 3173 8729 3170 8765 3176 8786
      3186 8791
TIME...MOT...LOC 0107Z 247DEG 35KT 3191 8768

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 7:14 PM CDT	Tornado Warning	MOB	Washington	36 min
Apr 15, 7:24 PM CDT	Tornado Warning Emergency	MOB	Mobile, Washington	51 min
Apr 15, 7:36 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	39 min
Apr 15, 7:54 PM CDT	Tornado Warning	MOB	Clarke, Monroe, Wilcox	51 min
Apr 15, 8:11 PM CDT	Tornado Warning Emergency	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

Nearby

Tornado Warnings in Alabama, 2011 Every tornado warning in 2011 Tornadoes 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.