Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 74, NWS Mobile, AL

April 15, 2011George County, Greene County, Perry County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 15, 2011, 8:42 PM CDT for George County, Greene County, Perry County, Mississippi. It was in force for 63 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, 8:42 PM CDT (01:42 UTC)
Expired: Apr 15, 2011, 9:45 PM CDT
In force: 63 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties George County, MS, Greene County, MS, Perry County, MS

The radar

The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 01:44 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, 7:48 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 1.7 hours before the alert went out and 117 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: 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

Open this sounding in Storm Lab

The text

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

167 
WFUS54 KMOB 160142
TORMOB
MSC039-041-111-160245-
/O.NEW.KMOB.TO.W.0074.110416T0142Z-110416T0245Z/

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

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 945 PM CDT

* AT 839 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 13 MILES NORTH
  OF WIGGINS...OR 14 MILES SOUTHWEST OF NEW AUGUSTA...MOVING EAST AT
  50 MPH.

* THE TORNADO WILL BE NEAR...
  BEAUMONT AROUND 900 PM CDT...
  MCLAIN AROUND 905 PM CDT...
  AVENT STATION AROUND 910 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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

&&

LAT...LON 3115 8914 3135 8866 3099 8856 3095 8889
      3100 8914 3101 8915
TIME...MOT...LOC 0142Z 262DEG 41KT 3104 8913

$$

3 follow-up statements

005 
WWUS54 KMOB 160222
SVSMOB

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

MSC039-041-111-160245-
/O.CON.KMOB.TO.W.0074.000000T0000Z-110416T0245Z/
GEORGE MS-PERRY MS-GREENE MS-
922 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR
SOUTHWESTERN GREENE...EAST CENTRAL PERRY AND NORTH CENTRAL GEORGE
COUNTIES...

AT 917 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 16 MILES NORTHEAST OF
WIGGINS...MOVING EAST AT 45 MPH.

THE TORNADO WILL BE NEAR...
  ROYCE...LEAF...AVENT STATION AND MCLAIN AROUND 930 PM CDT...
  MERRILL AND NEELY AROUND 935 PM CDT...
  VERNAL...HILLMAN AND BRADLEY AROUND 940 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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3101 8902 3106 8901 3112 8899 3124 8863
      3099 8856 3095 8889
TIME...MOT...LOC 0222Z 262DEG 41KT 3104 8891

$$

460 
WWUS54 KMOB 160233
SVSMOB

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

MSC111-160243-
/O.CAN.KMOB.TO.W.0074.000000T0000Z-110416T0245Z/
PERRY MS-
933 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR SOUTHERN PERRY COUNTY IS CANCELLED...

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

LAT...LON 3098 8874 3103 8875 3109 8870 3115 8861
      3112 8860 3099 8856 3098 8863
TIME...MOT...LOC 0233Z 257DEG 44KT 3106 8862

$$

MSC039-041-160245-
/O.CON.KMOB.TO.W.0074.000000T0000Z-110416T0245Z/
GEORGE MS-GREENE MS-
933 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR SOUTH
CENTRAL GREENE AND NORTH CENTRAL GEORGE COUNTIES...

AT 930 PM CDT.... THIS TORNADO WAS NEAR VERNAL...OR ABOUT 10 MILES
SOUTHWEST OF LEAKESVILLE...MOVING EAST AT 50 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 300 AM CDT SATURDAY MORNING
FOR SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST
MISSISSIPPI.

LAT...LON 3098 8874 3103 8875 3109 8870 3115 8861
      3112 8860 3099 8856 3098 8863
TIME...MOT...LOC 0233Z 257DEG 44KT 3106 8862

$$

688 
WWUS54 KMOB 160243
SVSMOB

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

MSC039-041-160253-
/O.EXP.KMOB.TO.W.0074.000000T0000Z-110416T0245Z/
GEORGE MS-GREENE MS-
943 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL GREENE AND NORTH CENTRAL
GEORGE COUNTIES WILL EXPIRE AT 945 PM CDT...

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

LAT...LON 3098 8874 3103 8875 3109 8870 3115 8861
      3112 8860 3099 8856 3098 8863
TIME...MOT...LOC 0243Z 257DEG 44KT 3109 8848

$$

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	Greene	36 min
Apr 15, 7:24 PM CDT	Tornado Warning Emergency	MOB	Greene, Perry	51 min
Apr 15, 7:53 PM CDT	Tornado Warning	MOB	Greene, Perry	37 min
Apr 15, 8:28 PM CDT	Tornado Warning	MOB	Greene	47 min
Apr 15, 8:36 PM CDT	Tornado Warning	MOB	Greene, Perry	54 min
Apr 15, 9:15 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	45 min
Apr 15, 9:18 PM CDT	Flash Flood Warning	MOB	Greene, Perry	117 min
Apr 15, 9:59 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene	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.