Alert archive / Mississippi / Tornado Warnings in 2011
Tornado Warning 44, NWS Memphis, TN
NWS Memphis, TN issued this tornado warning at Apr 20, 2011, 8:43 PM CDT for 4 counties in Mississippi. It was in force for 47 min. 4 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 20, 2011, 8:43 PM CDT (01:43 UTC)
- Expired
- Apr 20, 2011, 9:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
Counties Chickasaw County, MS, Itawamba County, MS, Lee County, MS, Monroe County, MS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 20, 9:00 PM CDT | TSTM WND DMG | Nettleton, MS | TREES DOWN COUNTY WIDE. |
| Apr 20, 9:00 PM CDT | TSTM WND DMG | Smithville, MS | SEVERAL TREES DOWN OVER NORTHERN MONROE COUNTY. |
| Apr 20, 9:10 PM CDT | HAIL 1 | Amory, MS | |
| Apr 20, 9:13 PM CDT | HAIL 1 | Amory, MS | QUARTER SIZED HAIL IN AMORY |
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 20, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 1.7 hours before the alert went out and 166 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 749 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
428
WFUS54 KMEG 210143
TORMEG
MSC017-057-081-095-210230-
/O.NEW.KMEG.TO.W.0044.110421T0143Z-110421T0230Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
843 PM CDT WED APR 20 2011
THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN CHICKASAW COUNTY IN NORTHEAST MISSISSIPPI...
SOUTHERN ITAWAMBA COUNTY IN NORTHEAST MISSISSIPPI...
SOUTHERN LEE COUNTY IN NORTHEAST MISSISSIPPI...
NORTHERN MONROE COUNTY IN NORTHEAST MISSISSIPPI...
* UNTIL 930 PM CDT
* AT 843 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM PRODUCING A TORNADO NEAR SHANNON...OR NEAR
OKOLONA...MOVING EAST AT 35 MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AMORY AND
OKOLONA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
.IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
.THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER 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 3402 8820 3401 8821 3393 8876 3416 8881
3426 8817
TIME...MOT...LOC 0143Z 260DEG 31KT 3406 8868
$$2 follow-up statements
957
WWUS54 KMEG 210211
SVSMEG
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
911 PM CDT WED APR 20 2011
MSC017-081-210221-
/O.CAN.KMEG.TO.W.0044.000000T0000Z-110421T0230Z/
LEE MS-CHICKASAW MS-
911 PM CDT WED APR 20 2011
...THE TORNADO WARNING FOR NORTHEASTERN CHICKASAW AND SOUTHERN LEE
COUNTIES IS CANCELLED...
AT 911 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE TORNADO WARNING IS CANCELLED.
LAT...LON 3415 8851 3420 8818 3402 8820 3401 8821
3396 8858
TIME...MOT...LOC 0211Z 260DEG 31KT 3410 8839
$$
MSC057-095-210230-
/O.CON.KMEG.TO.W.0044.000000T0000Z-110421T0230Z/
ITAWAMBA MS-MONROE MS-
911 PM CDT WED APR 20 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
NORTHEASTERN MONROE AND SOUTHERN ITAWAMBA COUNTIES...
AT 911 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR SMITHVILLE...OR 9
MILES NORTHEAST OF AMORY...MOVING EAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AMORY...
JACINTO...CARDSVILLE...TURON...CADAMY...BIGBEE AND PARHAM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STORM SHELTER. IF NO
STORM SHELTER 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 3415 8851 3420 8818 3402 8820 3401 8821
3396 8858
TIME...MOT...LOC 0211Z 260DEG 31KT 3410 8839
$$885
WWUS54 KMEG 210227
SVSMEG
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
927 PM CDT WED APR 20 2011
MSC057-095-210237-
/O.EXP.KMEG.TO.W.0044.000000T0000Z-110421T0230Z/
ITAWAMBA MS-MONROE MS-
927 PM CDT WED APR 20 2011
...THE TORNADO WARNING FOR NORTHEASTERN MONROE AND SOUTHERN ITAWAMBA
COUNTIES WILL EXPIRE AT 930 PM CDT...
AT 927 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
LAT...LON 3415 8851 3420 8818 3402 8820 3401 8821
3396 8858
TIME...MOT...LOC 0227Z 260DEG 31KT 3411 8822
$$The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 7:24 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Lafayette, Marshall, Pontotoc, Union, Yalobusha | 51 min |
| Apr 20, 8:04 PM CDT | Severe Thunderstorm Warning | MEG | Monroe | 11 min |
| Apr 20, 8:07 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw, Lee, Monroe, Pontotoc | 38 min |
| Apr 20, 8:10 PM CDT | Flash Flood Warning | MEG | Benton, Calhoun, Chickasaw, Lafayette, Lee, Marshall and 5 more | 3 hr |
| Apr 20, 8:28 PM CDT | Severe Thunderstorm Warning | MEG | Itawamba, Lee, Monroe, Pontotoc, Prentiss, Tishomingo | 47 min |
| Apr 20, 9:01 PM CDT | Flash Flood Warning | MEG | Chickasaw, Itawamba, Lee, Monroe, Prentiss, Tishomingo | 3 hr |
| Apr 21, 6:21 AM CDT | River Flood Warning | MEG | Monroe | 29 hr |
| Apr 21, 6:21 AM CDT | River Flood Warning | MEG | Monroe | 29 hr |
| Apr 21, 10:29 AM CDT | River Flood Warning | MEG | Lafayette, Marshall, Union | 24 hr |
Nearby
Tornado Warnings in Mississippi, 2011Every tornado warning in 2011Tornadoes 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.