Alert archive / Mississippi / Tornado Warnings in 2011

Tornado Warning 6, NWS Mobile, AL

March 9, 2011Greene County, Perry County, Mississippi

NWS Mobile, AL issued this tornado warning at Mar 9, 2011, 6:00 AM CST for Greene County, Perry County, Mississippi. It was in force for 45 min. 1 report 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: Mar 9, 2011, 6:00 AM CST (12:00 UTC)
Expired: Mar 9, 2011, 6:45 AM CST
In force: 45 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

Counties Greene County, MS, Perry County, MS

The radar

The Mobile radar (KMOB), 85 km from the middle of the area, began a volume at 12:00 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
Mar 9, 6:05 AM CST	HAIL 1	1 W Beaumont, MS

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
Mar 9, 2:39 AM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 0.0 hours before the alert went out and 152 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: 1220 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 456 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 499 m²/s²
0-3 km storm-relative helicity: 571 m²/s²
Significant tornado parameter: 4.3
Supercell composite: 19.4

Open this sounding in Storm Lab

The text

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

807 
WFUS54 KMOB 091200
TORMOB
MSC041-111-091245-
/O.NEW.KMOB.TO.W.0006.110309T1200Z-110309T1245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MOBILE AL
600 AM CST WED MAR 9 2011

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

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

* UNTIL 645 AM CST

* AT 556 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 13 MILES SOUTH
  OF RICHTON...OR NEAR NEW AUGUSTA...MOVING NORTHEAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  BEAUMONT AROUND 605 AM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

&&

LAT...LON 3144 8862 3144 8856 3131 8845 3110 8900
      3123 8907
TIME...MOT...LOC 1200Z 243DEG 35KT 3118 8897

$$

1 follow-up statement

137 
WWUS54 KMOB 091228
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
628 AM CST WED MAR 9 2011

MSC111-091237-
/O.CAN.KMOB.TO.W.0006.000000T0000Z-110309T1245Z/
PERRY MS-
628 AM CST WED MAR 9 2011

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

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF CENTRAL PERRY 
COUNTY. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CST WEDNESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3135 8881 3144 8863 3144 8856 3136 8849
      3132 8846 3131 8846 3117 8881
TIME...MOT...LOC 1227Z 243DEG 23KT 3123 8876

$$

MSC041-091245-
/O.CON.KMOB.TO.W.0006.000000T0000Z-110309T1245Z/
GREENE MS-
628 AM CST WED MAR 9 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 AM CST FOR NORTHERN
GREENE COUNTY...

AT 624 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS NEAR BYRD...OR ABOUT 13 MILES SOUTHEAST OF RICHTON...
MOVING NORTHEAST AT 25 MPH.

THE TORNADO WILL BE NEAR...
  AVERA...BOTHWELL AND SAND HILL AROUND 635 AM CST...
  CLARK AND OLD AVERA AROUND 645 AM CST...

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.

HEAVY RAINFALL MAY BE OBSCURING THIS TORNADO. TAKE COVER NOW! IF YOU
WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE
PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM CST WEDNESDAY MORNING
FOR SOUTHWESTERN ALABAMA AND SOUTHEAST MISSISSIPPI.

LAT...LON 3135 8881 3144 8863 3144 8856 3136 8849
      3132 8846 3131 8846 3117 8881
TIME...MOT...LOC 1227Z 243DEG 23KT 3123 8876

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 8, 7:01 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry	44 min
Mar 8, 7:47 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	43 min
Mar 8, 8:23 PM CST	Severe Thunderstorm Warning	MOB	Greene, Wayne	37 min
Mar 8, 9:32 PM CST	River Flood Warning	MOB	George, Greene, Perry	9 days
Mar 8, 9:32 PM CST	River Flood Warning	MOB	George, Greene, Jackson	10 days
Mar 9, 5:01 AM CST	Tornado Warning	MOB	Wayne	44 min
Mar 9, 5:07 AM CST	Flash Flood Warning	MOB	Wayne	6 hr
Mar 9, 5:51 AM CST	Flash Flood Warning	MOB	Greene, Perry, Wayne	6 hr
Mar 9, 6:04 AM CST	Tornado Warning	MOB	Perry, Stone	41 min
Mar 9, 6:37 AM CST	Tornado Warning	MOB	Greene	17 min
Mar 9, 6:38 AM CST	Tornado Warning	MOB	George, Greene, Perry, Stone	37 min
Mar 9, 6:41 AM CST	Severe Thunderstorm Warning	MOB	George, Stone	49 min
Mar 9, 7:08 AM CST	Severe Thunderstorm Warning	MOB	George, Greene	52 min
Mar 9, 7:26 AM CST	Flash Flood Warning	MOB	George, Greene, Perry, Stone	6 hr
Mar 9, 11:00 AM CST	Areal Flood Warning	MOB	Wayne	5 hr
Mar 9, 11:30 AM CST	River Flood Warning	MOB	Greene, Wayne	47 hr
Mar 9, 11:30 AM CST	River Flood Warning	MOB	Perry	6 days
Mar 9, 12:00 PM CST	Areal Flood Warning	MOB	Greene, Perry, Wayne	4 hr

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