Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 143, NWS Mobile, AL

November 16, 2011Washington County, Alabama; Wayne County, Mississippi

NWS Mobile, AL issued this tornado warning at Nov 16, 2011, 7:35 AM CST for Washington County, Alabama; Wayne County, Mississippi. It was in force for 40 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: Nov 16, 2011, 7:35 AM CST (13:35 UTC)
Expired: Nov 16, 2011, 8:15 AM CST
In force: 40 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Washington County, AL, Wayne County, MS

The radar

The Mobile radar (KMOB), 104 km from the middle of the area, began a volume at 13:35 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
Nov 16, 2:20 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 1.6 hours before the alert went out and 182 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: 602 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 462 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

031 
WFUS54 KMOB 161335
TORMOB
ALC129-MSC153-161415-
/O.NEW.KMOB.TO.W.0143.111116T1335Z-111116T1415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
735 AM CST WED NOV 16 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN WAYNE COUNTY IN SOUTHEAST MISSISSIPPI...
  NORTHERN WASHINGTON COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 815 AM CST

* AT 731 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 12 MILES SOUTH
  OF WAYNESBORO...OR 5 MILES SOUTH OF CLARA...MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CLARA...              BUCKATUNNA...         SAINT STEPHENS...
  MILLRY...

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 AM CST WEDNESDAY MORNING
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 1000 AM CST WEDNESDAY MORNING FOR SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3170 8843 3170 8810 3162 8807 3161 8808
      3155 8805 3144 8874 3157 8879
TIME...MOT...LOC 1335Z 249DEG 31KT 3152 8864

$$

1 follow-up statement

596 
WWUS54 KMOB 161354
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
754 AM CST WED NOV 16 2011

ALC129-MSC153-161415-
/O.CON.KMOB.TO.W.0143.000000T0000Z-111116T1415Z/
WASHINGTON AL-WAYNE MS-
754 AM CST WED NOV 16 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 AM CST FOR
SOUTHEASTERN WAYNE AND NORTHERN WASHINGTON COUNTIES...

AT 749 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR BELMONT...OR 11
MILES SOUTHEAST OF WAYNESBORO...MOVING EAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
COPELAND...CHAPEL HILL...MEHAFFEY...SHADY GROVE...FITEE...BARLOW...
HEALING SPRINGS...DUNBAR...LOPER...MILLRY...YARBO...CARPENTER...
ELLISVILLE...BASHI...RESCUEVILLE...SAINT STEPHENS...SILVER CROSS...
KOENTON...FRANKVILLE AND BIGBEE

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 AM CST WEDNESDAY MORNING
FOR SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI. A TORNADO WATCH ALSO
REMAINS IN EFFECT UNTIL 1000 AM CST WEDNESDAY MORNING FOR SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3170 8843 3170 8810 3162 8807 3161 8808
      3155 8805 3144 8874 3157 8879
TIME...MOT...LOC 1354Z 249DEG 31KT 3158 8846

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 6:37 AM CST	Tornado Warning	MOB	Choctaw	34 min
Nov 16, 8:27 AM CST	Tornado Warning	MOB	Choctaw, Clarke	63 min
Nov 16, 9:13 AM CST	Tornado Warning	MOB	Clarke, Monroe, Washington	47 min
Nov 16, 9:29 AM CST	Tornado Warning	MOB	Clarke, Monroe, Wilcox	37 min
Nov 16, 9:51 AM CST	Special Marine Warning	MOB		114 min
Nov 16, 10:26 AM CST	Special Marine Warning	MOB		2 hr
Nov 16, 10:35 AM CST	Severe Thunderstorm Warning	MOB	Butler, Conecuh, Crenshaw, Monroe, Wilcox	55 min
Nov 16, 10:39 AM CST	Tornado Warning	MOB	Butler, Crenshaw, Monroe, Wilcox	55 min
Nov 16, 10:48 AM CST	Small Craft Advisory	MOB		46 hr
Nov 16, 11:45 AM CST	Special Marine Warning	MOB		2 hr
Nov 16, 1:02 PM CST	Special Marine Warning	MOB		97 min
Nov 16, 2:33 PM CST	Fire Weather Watch	MOB	Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more	15 hr

Nearby

Tornado Warnings in Alabama, 2011 Tornado Warnings in Mississippi, 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.