Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

August 13, 2012Chickasaw County, Lee County, Monroe County, Mississippi

NWS Memphis, TN issued this special weather statement at Aug 13, 2012, 10:02 AM CDT for Chickasaw County, Lee County, Monroe County, Mississippi. It was in force for 43 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 13, 2012, 10:02 AM CDT (15:02 UTC)
Expired
Aug 13, 2012, 10:45 AM CDT
In force
43 min
Issued by
NWS Memphis, TN

Counties Chickasaw County, MS, Lee County, MS, Monroe County, MS

The radar

The Columbus AFB radar (KGWX), 42 km from the middle of the area, began a volume at 15:02 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 (KBYH), launched 12:00Z, 3.0 hours before the alert went out and 140 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 12:00Z on 2012-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1586 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2012-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 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
1586 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
909 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Memphis, TN wrote its last area forecast discussion before this special weather statement went out at Aug 13, 9:23 AM CDT, 39 minutes earlier.

Area forecast discussion, Aug 13, 9:23 AM CDT, 39 minutes before
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Hazardous weather outlook, Aug 13, 4:43 AM CDT, 5 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
443 AM CDT MON AUG 13 2012

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-141145-
ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA-
CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER-
FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY-
ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON-
MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT-
PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY-
ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA-
UNION-WEAKLEY-YALOBUSHA-
443 AM CDT MON AUG 13 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS THE MID
SOUTH THROUGH THIS EVENING. THE GREATEST SEVERE WEATHER POTENTIAL
SHOULD OCCUR THIS AFTERNOON AND EVENING ALONG AND EAST OF THE
MISSISSIPPI RIVER. THERE WILL BE AN ENHANCED RISK FOR DAMAGING
WINDS AND LARGE HAIL WITH ANY SEVERE STORMS THAT DEVELOP.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH THIS EVENING...ESPECIALLY
ALONG AND EAST OF THE MISSISSIPPI RIVER.

JLH

In the hours before

Local storm report, Aug 13, 7:37 AM CDT, 2 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
737 AM CDT MON AUG 13 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     TSTM WND GST     TIPTONVILLE             36.38N 89.47W
08/13/2012  E60 MPH          LAKE               TN   UNKNOWN

&&

CJC
Special weather statement, Aug 13, 8:50 AM CDT, 1 hour 12 minutes before
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Special weather statement, Aug 13, 8:59 AM CDT, 1 hour 3 minutes before
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Special weather statement, Aug 13, 9:14 AM CDT, 48 minutes before
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Special weather statement, Aug 13, 9:24 AM CDT, 38 minutes before
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Special weather statement, Aug 13, 10:02 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 7:37 AM CDTSevere Thunderstorm WarningMEGCoahoma38 min
Aug 13, 8:12 AM CDTSevere Thunderstorm WarningMEGCoahoma, Panola, Quitman, Tallahatchie, Yalobusha48 min
Aug 13, 8:59 AM CDTSpecial Weather StatementMEGYalobusha46 min
Aug 13, 9:24 AM CDTSpecial Weather StatementMEGCalhoun51 min
Aug 13, 10:10 AM CDTSpecial Weather StatementMEGAlcorn50 min
Aug 13, 10:29 AM CDTSpecial Weather StatementMEGMonroe46 min
Aug 13, 10:34 AM CDTSpecial Weather StatementMEGAlcorn26 min
Aug 13, 4:20 PM CDTSevere Thunderstorm WarningMEGCoahoma40 min
Aug 13, 4:26 PM CDTSpecial Weather StatementMEGTishomingo34 min
Aug 13, 4:52 PM CDTSevere Thunderstorm WarningMEGTallahatchie38 min
Aug 13, 5:00 PM CDTSevere Thunderstorm WarningMEGCoahoma45 min
Aug 13, 5:15 PM CDTSevere Thunderstorm WarningMEGBenton45 min
Aug 13, 5:26 PM CDTSevere Thunderstorm WarningMEGPanola, Tallahatchie, Yalobusha49 min
Aug 13, 5:29 PM CDTSevere Thunderstorm WarningMEGTallahatchie46 min
Aug 13, 6:23 PM CDTSpecial Weather StatementMEGTallahatchie37 min
Aug 13, 6:50 PM CDTSpecial Weather StatementMEGMarshall25 min
Aug 13, 6:56 PM CDTSpecial Weather StatementMEGTallahatchie34 min
Aug 13, 6:57 PM CDTSpecial Weather StatementMEGPanola33 min
Aug 13, 6:32 AM CDTSevere Thunderstorm WarningMEGLake43 min
Aug 13, 7:06 AM CDTSevere Thunderstorm WarningMEGLake, Obion39 min
Aug 13, 8:50 AM CDTSpecial Weather StatementMEGMadison25 min
Aug 13, 9:14 AM CDTSpecial Weather StatementMEGHenderson31 min
Aug 13, 10:03 AM CDTSpecial Weather StatementMEGDecatur, Hardin, McNairy27 min
Aug 13, 5:10 PM CDTSevere Thunderstorm WarningMEGHaywood, Lauderdale50 min
Aug 13, 5:40 AM CDTSpecial Weather StatementMEGClay35 min
Aug 13, 6:15 AM CDTSevere Thunderstorm WarningMEGClay45 min
Aug 13, 3:43 PM CDTSpecial Weather StatementMEGPoinsett32 min

Nearby

Special Weather Statements in Mississippi, 2012Every special weather statement in 2012

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.