Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 26, NWS Mobile, AL

April 4, 2011Choctaw County, Clarke County, Washington County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 4, 2011, 7:54 PM CDT for Choctaw County, Clarke County, Washington County, Alabama. It was in force for 53 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 4, 2011, 7:54 PM CDT (00:54 UTC)
Expired: Apr 4, 2011, 8:47 PM CDT
In force: 53 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Choctaw County, AL, Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 127 km from the middle of the area, began a volume at 00:54 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.

What was reported inside it

Time	Report	Where	Remark
Apr 4, 8:07 PM CDT	TSTM WND DMG	1 S Coffeeville, AL	TREES DOWN ON WEST BEND RD. TIME ESTIMATED FROM RADAR.
Apr 4, 8:07 PM CDT	TSTM WND DMG	8 Sse Coffeeville, AL	TREES DOWN ON HWY 69 IN SALITPA...8 MILES SSE OF COFFEEVILLE. TIME ESTIMATED FROM RADAR.
Apr 4, 8:27 PM CDT	TSTM WND DMG	Thomasville, AL	EMA REPORTS TREE AND 3-PHASE POWER LINE DAMAGE. TIME ESTIMATED FROM RADAR.
Apr 4, 8:30 PM CDT	HAIL 0.88	2 W Thomasville, AL
Apr 4, 8:35 PM CDT	TSTM WND DMG	10 S Thomasville, AL	EMA REPORTS NEAR THE COMMUNITY OF LIBERTY...HALFWAY BETWEEN THOMASVILLE AND GROVE HILL...A TREE HAS FALLEN ACROSS OLD HWY 5. TIME ESTIMATED FROM RADAR.
Apr 4, 8:40 PM CDT	TSTM WND DMG	Grove Hill, AL	TREE DOWN ON HWY 43 IN GROVE HILL NEAR CHILTON RD. TIME ESTIMATED FROM RADAR.
Apr 4, 8:48 PM CDT	TSTM WND DMG	5 Se Grove Hill, AL	EMA REPORTED TREE DOWN. TIME ESTIMATED FROM RADAR.
Apr 4, 8:48 PM CDT	TSTM WND DMG	Whately, AL	EMA REPORTS SEVERAL TREES DOWN NEAR WHATLEY. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 4, 5:28 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.9 hours before the alert went out and 186 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: 862 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1607 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 9.2

Open this sounding in Storm Lab

The text

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

126 
WFUS54 KMOB 050054
TORMOB
ALC023-025-129-050200-
/O.NEW.KMOB.TO.W.0026.110405T0054Z-110405T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
754 PM CDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL CHOCTAW COUNTY IN SOUTHWEST ALABAMA...
  NORTHERN CLARKE COUNTY IN SOUTHWEST ALABAMA...
  THIS INCLUDES THE CITIES OF...THOMASVILLE...GROVE HILL...
  NORTHERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 900 PM CDT

* AT 749 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 12 MILES
  NORTHWEST OF CHATOM...OR NEAR MILLRY...MOVING NORTHEAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
  SERVICE AROUND 810 PM CDT...
  COFFEEVILLE AROUND 815 PM CDT...
  FULTON AROUND 835 PM CDT...
  THOMASVILLE AROUND 840 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 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3200 8767 3189 8767 3187 8761 3183 8762
      3183 8757 3171 8753 3155 8792 3148 8826
      3148 8844 3162 8844 3201 8784
TIME...MOT...LOC 0054Z 239DEG 46KT 3162 8833

$$

3 follow-up statements

919 
WWUS54 KMOB 050112
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
812 PM CDT MON APR 4 2011

ALC023-025-129-050200-
/O.CON.KMOB.TO.W.0026.000000T0000Z-110405T0200Z/
WASHINGTON AL-CLARKE AL-CHOCTAW AL-
812 PM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR SOUTH
CENTRAL CHOCTAW...NORTHERN CLARKE AND NORTHERN WASHINGTON COUNTIES...

AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR TATTLERSVILLE...OR ABOUT 18 MILES NORTHWEST OF
JACKSON...MOVING NORTHEAST AT 65 MPH.

THE TORNADO WILL BE NEAR...
  CHILTON AND TALLAHATTA SPRINGS AROUND 820 PM CDT...
  RURAL...SPRINGFIELD...GLOVER AND GREENWOOD AROUND 825 PM CDT...
  THOMASVILLE...ROUNDHILL...FINLEY CROSSING AND ATKEISON AROUND 830
  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 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3200 8767 3189 8767 3187 8761 3183 8762
      3183 8757 3171 8753 3155 8792 3148 8826
      3148 8844 3162 8844 3201 8784
TIME...MOT...LOC 0111Z 236DEG 62KT 3174 8802

$$

930 
WWUS54 KMOB 050126
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
826 PM CDT MON APR 4 2011

ALC023-050136-
/O.CAN.KMOB.TO.W.0026.000000T0000Z-110405T0200Z/
CHOCTAW AL-
826 PM CDT MON APR 4 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL CHOCTAW COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3200 8767 3189 8767 3187 8761 3183 8762
      3183 8757 3171 8753 3155 8792 3148 8826
      3174 8797 3188 8804 3189 8803 3201 8785
TIME...MOT...LOC 0126Z 238DEG 52KT 3182 8781

$$

ALC025-129-050200-
/O.CON.KMOB.TO.W.0026.000000T0000Z-110405T0200Z/
WASHINGTON AL-CLARKE AL-
826 PM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR NORTHERN
CLARKE AND NORTH CENTRAL WASHINGTON COUNTIES...

AT 821 PM CDT.... THIS TORNADO WAS NEAR CHILTON...OR ABOUT 8 MILES
NORTHWEST OF GROVE HILL...MOVING NORTHEAST AT 60 MPH.

THE TORNADO WILL BE NEAR...
  SCYRENE AROUND 830 PM CDT...
  ROUNDHILL...THOMASVILLE...FINLEY CROSSING AND NETTLEBORO AROUND 835
  PM CDT...
  ATKEISON AROUND 840 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 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3200 8767 3189 8767 3187 8761 3183 8762
      3183 8757 3171 8753 3155 8792 3148 8826
      3174 8797 3188 8804 3189 8803 3201 8785
TIME...MOT...LOC 0126Z 238DEG 52KT 3182 8781

$$

670 
WWUS54 KMOB 050147
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
847 PM CDT MON APR 4 2011

ALC025-129-050157-
/O.CAN.KMOB.TO.W.0026.000000T0000Z-110405T0200Z/
WASHINGTON AL-CLARKE AL-
847 PM CDT MON APR 4 2011

...THE TORNADO WARNING FOR NORTHERN CLARKE AND NORTH CENTRAL
WASHINGTON COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3200 8767 3189 8767 3187 8761 3183 8762
      3183 8757 3171 8753 3155 8792 3148 8826
      3174 8797 3188 8804 3189 8803 3201 8785
TIME...MOT...LOC 0147Z 238DEG 52KT 3198 8751

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 7:05 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	55 min
Apr 4, 7:08 PM CDT	Tornado Warning	MOB	Choctaw, Clarke, Washington	67 min
Apr 4, 7:30 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Mobile, Washington, Wilcox	60 min
Apr 4, 7:38 PM CDT	Tornado Warning	MOB	Washington	56 min
Apr 4, 8:21 PM CDT	Tornado Warning	MOB	Clarke, Monroe, Washington	39 min
Apr 4, 8:30 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 3 more	60 min
Apr 4, 9:41 PM CDT	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia	64 min
Apr 4, 9:44 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Covington, Escambia	61 min
Apr 4, 9:47 PM CDT	Special Marine Warning	MOB		88 min
Apr 4, 10:46 PM CDT	Severe Thunderstorm Warning	MOB	Covington	44 min
Apr 4, 11:36 PM CDT	Special Marine Warning	MOB		84 min
Apr 5, 5:09 AM CDT	Fire Weather Watch	MOB	Butler, Conecuh, Covington, Crenshaw, Escambia, Monroe and 1 more	25 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.