Alert archive / Tennessee / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 331, NWS Memphis, TN

May 1, 2011Lauderdale County, Shelby County, Tipton County, Tennessee; Crittenden County, Mississippi County, Poinsett County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at May 1, 2011, 3:11 AM CDT for Lauderdale County, Shelby County, Tipton County, Tennessee; Crittenden County, Mississippi County, Poinsett County, Arkansas. It was in force for 49 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: May 1, 2011, 3:11 AM CDT (08:11 UTC)
Expired: May 1, 2011, 4:00 AM CDT
In force: 49 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Crittenden County, AR, Mississippi County, AR, Poinsett County, AR, Lauderdale County, TN, Shelby County, TN, Tipton County, TN

The radar

The Memphis radar (KNQA), 30 km from the middle of the area, began a volume at 08:12 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 nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 8.2 hours before the alert went out and 81 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: 1745 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 322 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 14.0

Open this sounding in Storm Lab

The text

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

945 
WUUS54 KMEG 010811
SVRMEG
ARC035-093-111-TNC097-157-167-010900-
/O.NEW.KMEG.SV.W.0331.110501T0811Z-110501T0900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
311 AM CDT SUN MAY 1 2011

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CRITTENDEN COUNTY IN EASTERN ARKANSAS...
  SOUTHERN MISSISSIPPI COUNTY IN EASTERN ARKANSAS...
  SOUTHEASTERN POINSETT COUNTY IN EASTERN ARKANSAS...
  SOUTHWESTERN LAUDERDALE COUNTY IN SOUTHWEST TENNESSEE...
  NORTHWESTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE...
  WESTERN TIPTON COUNTY IN SOUTHWEST TENNESSEE...

* UNTIL 400 AM CDT

* AT 311 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  NORTHWEST OF CRAWFORDSVILLE...OR NEAR EARLE...AND MOVING NORTHEAST
  AT 60 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KEISER...
  LUXORA...OSCEOLA...WILSON AND FORT PILLOW STATE PARK.

 THIS WARNING ALSO INCLUDES AREAS NEAR BRANDYWINE LAKE...CORONEE
  LAKE...OPEN LAKE...SUNK LAKE...THE CHUTE AND WAPANOCCA LAKE.

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 3591 8982 3566 8953 3517 9036 3532 9051
      3534 9051
TIME...MOT...LOC 0811Z 226DEG 54KT 3533 9035

$$

1 follow-up statement

749 
WWUS54 KMEG 010851
SVSMEG

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
351 AM CDT SUN MAY 1 2011

ARC035-093-111-TNC097-157-167-010901-
/O.EXP.KMEG.SV.W.0331.000000T0000Z-110501T0900Z/
MISSISSIPPI AR-CRITTENDEN AR-POINSETT AR-LAUDERDALE TN-SHELBY TN-
TIPTON TN-
351 AM CDT SUN MAY 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN TIPTON...NORTHWESTERN
SHELBY...SOUTHWESTERN LAUDERDALE...SOUTHEASTERN POINSETT...NORTHERN
CRITTENDEN AND SOUTHERN MISSISSIPPI COUNTIES WILL EXPIRE AT 400 AM
CDT...

AT 351 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN ALLOWED TO
EXPIRE.

LAT...LON 3591 8982 3566 8953 3517 9036 3532 9051
      3534 9051
TIME...MOT...LOC 0851Z 226DEG 54KT 3575 8982

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 1:20 AM CDT	Special Weather Statement	MEG	Dyer, Lauderdale	25 min
May 1, 2:28 AM CDT	Special Weather Statement	MEG	Crockett, Gibson, Haywood	32 min
May 1, 2:29 AM CDT	Special Weather Statement	MEG	Lauderdale, Tipton	31 min
May 1, 3:04 AM CDT	Special Weather Statement	MEG	Crockett, Haywood	26 min
May 1, 3:33 AM CDT	Special Weather Statement	MEG	Gibson	27 min
May 1, 3:47 AM CDT	Special Weather Statement	MEG	Haywood	28 min
May 1, 4:21 AM CDT	Special Weather Statement	MEG	Haywood	24 min
May 1, 4:47 AM CDT	Flash Flood Warning	MEG	Carroll, Chester, Crockett, Decatur, Fayette, Gibson and 9 more	9 hr
May 1, 7:32 AM CDT	Special Weather Statement	MEG	Shelby, Tipton	28 min
May 1, 8:44 AM CDT	Special Weather Statement	MEG	Shelby	46 min
May 1, 9:40 AM CDT	Special Weather Statement	MEG	Haywood, Tipton	50 min
May 1, 10:53 AM CDT	River Flood Warning	MEG	Shelby	62 hr
May 1, 10:53 AM CDT	River Flood Warning	MEG	Fayette, Shelby	62 hr
May 1, 11:09 AM CDT	Special Weather Statement	MEG	Lauderdale	51 min
May 1, 11:10 AM CDT	Severe Thunderstorm Warning	MEG	Lauderdale, Tipton	23 min
May 1, 11:29 AM CDT	Flash Flood Warning	MEG	Carroll, Crockett, Dyer, Gibson, Henry, Lake and 3 more	6 hr
May 1, 11:56 AM CDT	Special Weather Statement	MEG	Lauderdale	49 min
May 1, 12:35 PM CDT	Areal Flood Advisory	MEG	Shelby, Tipton	12 hr
May 1, 12:41 PM CDT	Special Weather Statement	MEG	Dyer, Lake, Lauderdale	49 min
May 1, 2:15 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	60 min
May 1, 2:16 PM CDT	Special Weather Statement	MEG	Obion	29 min
May 1, 2:24 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Lauderdale, Tipton	51 min
May 1, 2:42 PM CDT	Tornado Warning	MEG	Lauderdale, Shelby, Tipton	48 min
May 1, 2:53 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Haywood, Lauderdale, Tipton	52 min
May 1, 2:59 PM CDT	Severe Thunderstorm Warning	MEG	Shelby	46 min
May 1, 3:10 PM CDT	Tornado Warning	MEG	Shelby	41 min
May 1, 3:22 PM CDT	Severe Thunderstorm Warning	MEG	Crockett, Dyer, Fayette, Gibson, Haywood, Lauderdale and 2 more	53 min
May 1, 3:37 PM CDT	Severe Thunderstorm Warning	MEG	Dyer, Gibson, Henry, Obion, Weakley	38 min
May 1, 3:54 PM CDT	Tornado Warning	MEG	Fayette, Hardeman, Haywood, Madison	34 min
May 1, 3:56 PM CDT	Severe Thunderstorm Warning	MEG	Carroll, Crockett, Gibson, Haywood, Henderson, Madison and 1 more	49 min
May 1, 3:59 PM CDT	Flash Flood Warning	MEG	Carroll, Crockett, Decatur, Dyer, Fayette, Gibson and 8 more	3 hr
May 1, 4:40 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Shelby	50 min
May 1, 5:26 PM CDT	Severe Thunderstorm Warning	MEG	Fayette, Hardeman, Haywood, Madison, Shelby, Tipton	49 min
May 1, 5:48 PM CDT	Tornado Warning	MEG	Fayette, Hardeman, Haywood, Madison	33 min
Apr 30, 7:10 PM CDT	Special Weather Statement	MEG	Randolph	35 min
Apr 30, 7:22 PM CDT	Special Weather Statement	MEG	Clay	38 min
Apr 30, 7:37 PM CDT	Special Weather Statement	MEG	Greene	38 min
Apr 30, 8:03 PM CDT	Special Weather Statement	MEG	Clay	27 min
Apr 30, 8:10 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Greene	50 min
Apr 30, 10:23 PM CDT	Special Weather Statement	MEG	Randolph	37 min
Apr 30, 11:20 PM CDT	Special Weather Statement	MEG	Clay	25 min
Apr 30, 11:31 PM CDT	Special Weather Statement	MEG	Craighead	44 min
May 1, 12:31 AM CDT	Special Weather Statement	MEG	Cross, Poinsett	44 min
May 1, 12:42 AM CDT	Special Weather Statement	MEG	Mississippi	33 min
May 1, 1:35 AM CDT	Special Weather Statement	MEG	Cross	25 min
May 1, 2:01 AM CDT	Special Weather Statement	MEG	Mississippi	29 min
May 1, 3:02 AM CDT	Special Weather Statement	MEG	Crittenden	28 min
May 1, 6:41 AM CDT	Special Weather Statement	MEG	Lee, St. Francis	34 min
May 1, 7:12 AM CDT	Special Weather Statement	MEG	Crittenden	33 min
May 1, 9:12 AM CDT	Special Weather Statement	MEG	Lee	48 min
May 1, 10:00 AM CDT	Special Weather Statement	MEG	Lee, St. Francis	45 min
May 1, 10:37 AM CDT	Special Weather Statement	MEG	Crittenden, St. Francis	53 min
May 1, 10:45 AM CDT	Flash Flood Warning	MEG	Clay, Craighead, Cross, Greene, Lawrence, Mississippi and 2 more	9 hr
May 1, 11:20 AM CDT	Severe Thunderstorm Warning	MEG	Crittenden, Cross, Mississippi, Poinsett	40 min
May 1, 12:50 PM CDT	Special Weather Statement	MEG	Craighead	40 min
May 1, 12:55 PM CDT	Special Weather Statement	MEG	Cross, Poinsett	50 min
May 1, 1:26 PM CDT	Severe Thunderstorm Warning	MEG	Cross, Lee, St. Francis	49 min
May 1, 1:33 PM CDT	Special Weather Statement	MEG	Mississippi	42 min
May 1, 1:41 PM CDT	Flash Flood Warning	MEG	Crittenden, Cross, Lee, Mississippi, Poinsett, St. Francis	6 hr
May 1, 2:11 PM CDT	Special Weather Statement	MEG	Mississippi	49 min
May 1, 2:17 PM CDT	Severe Thunderstorm Warning	MEG	Lee, St. Francis	43 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2011 Severe Thunderstorm Warnings in Arkansas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.