Alert archive / Mississippi / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 621, NWS Memphis, TN

June 28, 20116 counties in Mississippi; 6 counties in Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Jun 28, 2011, 8:57 AM CDT for 6 counties in Mississippi; 6 counties in Tennessee. It was in force for 48 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: Jun 28, 2011, 8:57 AM CDT (13:57 UTC)
Expired: Jun 28, 2011, 9:45 AM CDT
In force: 48 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Benton County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Tate County, MS, Tippah County, MS, Chester County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Madison County, TN, McNairy County, TN

The radar

The Memphis radar (KNQA), 76 km from the middle of the area, began a volume at 13:58 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
Jun 28, 9:00 AM CDT	TSTM WND DMG	Red Banks, MS	TREES DOWN SCATTERED ACROSS THE NORTH END OF THE COUNTY.

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
Jun 28, 7:06 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 28, 4:17 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 2.0 hours before the alert went out and 62 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: 2921 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1168 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

335 
WUUS54 KMEG 281357
SVRMEG
MSC009-071-093-107-137-139-TNC023-047-069-075-109-113-281445-
/O.NEW.KMEG.SV.W.0621.110628T1357Z-110628T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
857 AM CDT TUE JUN 28 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BENTON COUNTY IN NORTHEAST MISSISSIPPI...
  NORTHWESTERN TIPPAH COUNTY IN NORTHEAST MISSISSIPPI...
  NORTHWESTERN LAFAYETTE COUNTY IN NORTHWEST MISSISSIPPI...
  MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
  NORTHEASTERN PANOLA COUNTY IN NORTHWEST MISSISSIPPI...
  SOUTHEASTERN TATE COUNTY IN NORTHWEST MISSISSIPPI...
  SOUTHWESTERN CHESTER COUNTY IN SOUTHWEST TENNESSEE...
  FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
  HARDEMAN COUNTY IN SOUTHWEST TENNESSEE...
  SOUTHERN HAYWOOD COUNTY IN SOUTHWEST TENNESSEE...
  EXTREME SOUTHWESTERN MADISON COUNTY IN SOUTHWEST TENNESSEE...
  WEST CENTRAL MCNAIRY COUNTY IN SOUTHWEST TENNESSEE...

* UNTIL 945 AM CDT

* AT 857 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS PRODUCING DESTRUCTIVE WINDS IN EXCESS
  OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  HILLVILLE TO HOLLY SPRINGS TO COMO...OR ALONG A LINE EXTENDING FROM
  13 MILES NORTHWEST OF BOLIVAR TO HOLLY SPRINGS TO 6 MILES NORTHWEST
  OF JOHN W KYLE STATE PARK...AND MOVING EAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HOLLY
  SPRINGS...BOLIVAR...CHICKASAW STATE PARK...CHICKASAW STATE FOREST
  AND WALL DOXEY STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3479 8896 3461 8923 3446 8935 3451 8998
      3485 8956 3548 8947 3543 8866
TIME...MOT...LOC 1357Z 282DEG 45KT 3541 8907 3482 8940
          3450 8980

$$

2 follow-up statements

641 
WWUS54 KMEG 281419
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
919 AM CDT TUE JUN 28 2011

MSC009-071-093-107-137-139-TNC023-047-069-075-109-113-281445-
/O.CON.KMEG.SV.W.0621.000000T0000Z-110628T1445Z/
TIPPAH MS-BENTON MS-MARSHALL MS-TATE MS-LAFAYETTE MS-PANOLA MS-
FAYETTE TN-HAYWOOD TN-MADISON TN-CHESTER TN-HARDEMAN TN-MCNAIRY TN-
919 AM CDT TUE JUN 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM CDT
FOR WEST CENTRAL MCNAIRY...HARDEMAN...SOUTHWESTERN CHESTER...EXTREME
SOUTHWESTERN MADISON...SOUTHEASTERN HAYWOOD...EASTERN FAYETTE...
NORTHEASTERN PANOLA...NORTHERN LAFAYETTE...SOUTHEASTERN TATE...
MARSHALL...BENTON AND NORTHWESTERN TIPPAH COUNTIES...

AT 919 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM SILERTON TO GRAVESTOWN TO ABBEVILLE...OR ALONG A LINE
EXTENDING FROM CHICKASAW STATE PARK TO 10 MILES WEST OF RIPLEY TO 6 
MILES NORTH OF OXFORD...MOVING EAST SOUTHEAST AT 50 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ABBEVILLE...
ASHLAND...GLENVILLE...HOLLY SPRINGS...POTTS CAMP...WALNUT...
BOLIVAR...GRAND JUNCTION...HICKORY VALLEY...HORNSBY...LA GRANGE...
MIDDLETON...MOSCOW AND SAULSBURY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

.STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5.

&&

LAT...LON 3479 8896 3461 8923 3446 8935 3450 8987
      3485 8956 3546 8920 3543 8866
TIME...MOT...LOC 1419Z 282DEG 45KT 3535 8874 3476 8907
          3444 8948

$$

007 
WWUS54 KMEG 281443
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
943 AM CDT TUE JUN 28 2011

MSC009-071-093-107-137-139-TNC023-047-069-075-109-113-281453-
/O.EXP.KMEG.SV.W.0621.000000T0000Z-110628T1445Z/
TIPPAH MS-BENTON MS-MARSHALL MS-TATE MS-LAFAYETTE MS-PANOLA MS-
FAYETTE TN-HAYWOOD TN-MADISON TN-CHESTER TN-HARDEMAN TN-MCNAIRY TN-
943 AM CDT TUE JUN 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MCNAIRY...
HARDEMAN...SOUTHWESTERN CHESTER...EXTREME SOUTHWESTERN MADISON...
SOUTHEASTERN HAYWOOD...EASTERN FAYETTE...NORTHEASTERN PANOLA...
NORTHERN LAFAYETTE...SOUTHEASTERN TATE...MARSHALL...BENTON AND
NORTHWESTERN TIPPAH COUNTIES WILL EXPIRE AT 945 AM CDT...

AT 943 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA
AND WEAKENED. THEREFORE...THE SEVERE THUNDERSTORM WARNING WILL BE
ALLOWED TO EXPIRE.

.CONTINUE TO MONITOR WEATHER CONDITIONS AS FUTURE WARNINGS ARE
POSSIBLE FOR YOUR AREA.

LAT...LON 3479 8896 3461 8923 3446 8935 3450 8987
      3485 8956 3546 8920 3543 8866
TIME...MOT...LOC 1443Z 282DEG 45KT 3528 8838 3469 8871
          3438 8913

$$

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 7:48 AM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Tunica	42 min
Jun 28, 8:13 AM CDT	Special Weather Statement	MEG	Tunica	32 min
Jun 28, 8:30 AM CDT	Severe Thunderstorm Warning	MEG	DeSoto, Marshall, Panola, Tate, Tunica	45 min
Jun 28, 8:46 AM CDT	Special Weather Statement	MEG	Coahoma, Panola, Quitman	29 min
Jun 28, 9:15 AM CDT	Special Weather Statement	MEG	Coahoma, Lafayette, Panola, Quitman, Tallahatchie, Yalobusha	30 min
Jun 28, 9:34 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Benton, Lafayette, Marshall, Prentiss, Tippah and 1 more	41 min
Jun 28, 9:45 AM CDT	Special Weather Statement	MEG	Calhoun, Lafayette, Pontotoc, Tallahatchie, Yalobusha	30 min
Jun 28, 10:10 AM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Itawamba, Lee, Prentiss, Tippah, Tishomingo and 1 more	50 min
Jun 28, 10:11 AM CDT	Flash Flood Warning	MEG	Alcorn	3 hr
Jun 28, 10:15 AM CDT	Special Weather Statement	MEG	Calhoun, Chickasaw, Lee, Pontotoc	60 min
Jun 28, 10:16 AM CDT	Flash Flood Warning	MEG	Tishomingo	3 hr
Jun 28, 10:59 AM CDT	Special Weather Statement	MEG	Chickasaw, Itawamba, Lee, Monroe, Prentiss, Tishomingo	46 min
Jun 28, 11:09 AM CDT	Flash Flood Warning	MEG	Lee	3 hr
Jun 28, 11:46 AM CDT	Special Weather Statement	MEG	Monroe	29 min
Jun 28, 6:36 AM CDT	Special Weather Statement	MEG	Hardin	24 min
Jun 28, 7:44 AM CDT	Severe Thunderstorm Warning	MEG	Dyer, Lake, Lauderdale, Obion, Tipton	46 min
Jun 28, 8:27 AM CDT	Severe Thunderstorm Warning	MEG	Crockett, Dyer, Gibson, Haywood, Lake, Lauderdale and 4 more	48 min
Jun 28, 8:29 AM CDT	Flash Flood Warning	MEG	Shelby	2 hr
Jun 28, 9:11 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Chester, Crockett, Dyer, Gibson, Haywood and 5 more	49 min
Jun 28, 9:42 AM CDT	Flash Flood Warning	MEG	Decatur	3 hr
Jun 28, 9:56 AM CDT	Flash Flood Warning	MEG	Hardin	3 hr
Jun 28, 10:00 AM CDT	Severe Thunderstorm Warning	MEG	Carroll, Chester, Decatur, Gibson, Hardin, Henderson and 5 more	45 min
Jun 28, 10:02 AM CDT	Flash Flood Warning	MEG	Carroll, Crockett, Gibson, Madison	2 hr
Jun 28, 10:45 AM CDT	Special Weather Statement	MEG	Decatur, Henry, Weakley	30 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2011 Severe Thunderstorm Warnings in Tennessee, 2011 Every severe thunderstorm warning 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.