Alert archive / Mississippi / Special Weather Statements in 2011

Special Weather Statement, NWS Memphis, TN

August 8, 2011Quitman County, Tallahatchie County, Mississippi

NWS Memphis, TN issued this special weather statement at Aug 8, 2011, 10:31 PM CDT for Quitman County, Tallahatchie County, Mississippi. It was in force for 29 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
Aug 8, 2011, 10:31 PM CDT (03:31 UTC)
Expired
Aug 8, 2011, 11:00 PM CDT
In force
29 min
Issued by
NWS Memphis, TN

Counties Quitman County, MS, Tallahatchie County, MS

The radar

The Columbus AFB radar (KGWX), 157 km from the middle of the area, began a volume at 03:33 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, 3.5 hours before the alert went out and 102 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-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2011-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4035 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2011-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
4035 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1436 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
1.7
Supercell composite
12.0

Open this sounding in Storm Lab

The text

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

174 
WWUS84 KMEG 090331
SPSMEG

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1031 PM CDT MON AUG 8 2011

MSZ011-012-020-021-090400-
YALOBUSHA MS-TALLAHATCHIE MS-QUITMAN MS-PANOLA MS-
1031 PM CDT MON AUG 8 2011

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1100 PM CDT FOR...

  SOUTHERN PANOLA COUNTY IN NORTHWEST MISSISSIPPI...
  SOUTHERN QUITMAN COUNTY IN NORTHWEST MISSISSIPPI...
  TALLAHATCHIE COUNTY IN NORTHWEST MISSISSIPPI...
  WESTERN YALOBUSHA COUNTY IN NORTHWEST MISSISSIPPI...

A STRONG THUNDERSTORM PRODUCING WINDS AT LEAST 40 MPH WAS LOCATED
OVER CHARLESTON AT 1032 PM CDT...MOVING EAST AT 30 MPH.

PEOPLE IN PANOLA...QUITMAN...TALLAHATCHIE AND YALOBUSHA COUNTIES...
INCLUDING LOCATIONS NEAR CHARLESTON AND GEORGE PAYNE STATE PARK...
SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3378 9018 3380 9019 3381 9045 3426 9045
      3427 8995 3420 8972 3386 8971 3386 8977
      3389 8978 3389 8992 3382 8993 3380 9013
      3378 9013
TIME...MOT...LOC 0332Z 283DEG 24KT 3401 9000

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 8:24 PM CDTSevere Thunderstorm WarningMEGCoahoma51 min
Aug 8, 9:01 PM CDTSevere Thunderstorm WarningMEGCoahoma, Quitman, Tallahatchie, Tate, Tunica59 min
Aug 8, 9:51 PM CDTSpecial Weather StatementMEGPanola39 min
Aug 8, 9:53 PM CDTSevere Thunderstorm WarningMEGCoahoma, Panola, Quitman, Tallahatchie36 min
Aug 8, 7:37 PM CDTSpecial Weather StatementMEGLee38 min
Aug 8, 8:03 PM CDTSevere Thunderstorm WarningMEGLee, St. Francis42 min
Aug 8, 8:38 PM CDTSevere Thunderstorm WarningMEGLee, St. Francis52 min
Aug 8, 9:07 PM CDTSevere Thunderstorm WarningMEGLee, Phillips38 min

Nearby

Special Weather Statements in Mississippi, 2011Every special weather statement 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.