Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 65, NWS Mobile, AL

April 15, 2011Greene County, Perry County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 6:49 PM CDT for Greene County, Perry County, Mississippi. It was in force for 41 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, 6:49 PM CDT (23:49 UTC)
Expired: Apr 15, 2011, 7:30 PM CDT
In force: 41 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Greene County, MS, Perry County, MS

The radar

The Mobile radar (KMOB), 88 km from the middle of the area, began a volume at 23:49 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 12:00Z, 11.8 hours before the alert went out and 119 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: 2339 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 499 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 504 m²/s²
Significant tornado parameter: 4.8
Supercell composite: 21.3

Open this sounding in Storm Lab

The text

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

151 
WFUS54 KMOB 152349
TORMOB
MSC041-111-160030-
/O.NEW.KMOB.TO.W.0065.110415T2349Z-110416T0030Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL GREENE COUNTY IN SOUTHEAST MISSISSIPPI...
  CENTRAL PERRY COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 730 PM CDT

* AT 649 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
  NORTHWEST OF WIGGINS...OR 12 MILES SOUTHEAST OF PURVIS...MOVING
  NORTHEAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  NEW AUGUSTA AROUND 710 PM CDT...
  BEAUMONT AROUND 715 PM CDT...
  BEAUMONT AND MCLAIN AROUND 720 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 3119 8915 3140 8867 3118 8855 3096 8914
      3100 8914 3101 8915
TIME...MOT...LOC 2350Z 245DEG 38KT 3105 8923

$$

2 follow-up statements

569 
WWUS54 KMOB 160006
SVSMOB

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

MSC041-111-160030-
/O.CON.KMOB.TO.W.0065.000000T0000Z-110416T0030Z/
PERRY MS-GREENE MS-
706 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR CENTRAL
GREENE AND CENTRAL PERRY COUNTIES...

AT 702 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR REDHILL...OR ABOUT 16 MILES NORTH OF WIGGINS...
MOVING EAST 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 3119 8915 3140 8867 3118 8855 3096 8914
      3100 8914 3101 8915
TIME...MOT...LOC 0006Z 252DEG 37KT 3109 8903

$$

343 
WWUS54 KMOB 160019
SVSMOB

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

MSC041-111-160030-
/O.CON.KMOB.TO.W.0065.000000T0000Z-110416T0030Z/
PERRY MS-GREENE MS-
719 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR CENTRAL
GREENE AND CENTRAL PERRY COUNTIES...

AT 716 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR OAK GROVE...OR ABOUT 18 MILES NORTHEAST OF
WIGGINS...MOVING EAST AT 45 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 3119 8915 3140 8867 3118 8855 3096 8914
      3100 8914 3101 8915
TIME...MOT...LOC 0018Z 254DEG 38KT 3107 8891

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 10:15 AM CDT	Tornado Warning	MOB	Wayne	45 min
Apr 15, 10:34 AM CDT	Tornado Warning	MOB	Greene, Perry	41 min
Apr 15, 10:56 AM CDT	Tornado Warning	MOB	Wayne	49 min
Apr 15, 11:09 AM CDT	Tornado Warning	MOB	Greene, Wayne	51 min
Apr 15, 11:35 AM CDT	Tornado Warning	MOB	Wayne	40 min
Apr 15, 2:06 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene	39 min
Apr 15, 5:59 PM CDT	Tornado Warning	MOB	Wayne	61 min
Apr 15, 6:38 PM CDT	Tornado Warning	MOB	Greene, Perry	37 min
Apr 15, 6:44 PM CDT	Tornado Warning	MOB	Wayne	61 min

Nearby

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.