Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

December 20, 20124 counties in Mississippi

NWS Memphis, TN issued this special weather statement at Dec 20, 2012, 5:12 AM CST for 4 counties in Mississippi. It was in force for 33 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: Dec 20, 2012, 5:12 AM CST (11:12 UTC)
Expired: Dec 20, 2012, 5:45 AM CST
In force: 33 min
Issued by: NWS Memphis, TN

Counties Calhoun County, MS, Chickasaw County, MS, Lee County, MS, Pontotoc County, MS

The radar

The Columbus AFB radar (KGWX), 63 km from the middle of the area, began a volume at 11:14 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, 11.2 hours before the alert went out and 139 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: 7 J/kg
Mixed-layer CIN: -260 J/kg
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 529 m²/s²
0-3 km storm-relative helicity: 617 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Dec 20, 5:09 AM CST, 3 minutes earlier.

Area forecast discussion, Dec 20, 5:09 AM CST, 3 minutes before

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Hazardous weather outlook, Dec 20, 3:39 AM CST, 1 hour 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
339 AM CST THU DEC 20 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>092-211145-
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-
339 AM CST THU DEC 20 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 OF SEVERE WEATHER SOUTH AND WEST OF A LINE
FROM WYNNE ARKANSAS...BOLIVAR TENNESSEE...TO COFFEEVILLE
MISSISSIPPI THROUGH 7AM THIS MORNING. THE MAIN THREAT WILL BE
DAMAGING WINDS.

A FEW STRONG STORMS MAY BE POSSIBLE THIS MORNING TO THE NORTH AND
EAST OF THE ABOVE LINE. STRONG GUSTY WINDS WILL BE THE MAIN THREAT.

A WIND ADVISORY HAS BEEN ISSUED FOR THE ENTIRE MIDSOUTH THROUGH 6
PM THIS EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH 7AM THIS MORNING.

JAB

In the hours before

Special weather statement, Dec 20, 4:31 AM CST, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
431 AM CST THU DEC 20 2012

MSZ001>003-008-012-013-201115-
BENTON MS-TATE MS-PANOLA MS-MARSHALL MS-LAFAYETTE MS-DE SOTO MS-
431 AM CST THU DEC 20 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 515 AM CST FOR...

  WESTERN BENTON COUNTY IN NORTHEAST MISSISSIPPI...
  EASTERN DESOTO COUNTY IN NORTHWEST MISSISSIPPI...
  NORTHERN LAFAYETTE COUNTY IN NORTHWEST MISSISSIPPI...
  MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
  NORTHEASTERN PANOLA COUNTY IN NORTHWEST MISSISSIPPI...
  EASTERN TATE COUNTY IN NORTHWEST MISSISSIPPI...

A LINE OF STRONG THUNDERSTORMS PRODUCING WINDS AT LEAST 40 MPH WAS
LOCATED FROM 7 MILES NORTHEAST OF OLIVE BRANCH TO 7 MILES EAST OF
COMO AT 431 AM CST...MOVING EAST AT 50 MPH.

VERY HEAVY RAIN WILL OCCUR WITH THESE THUNDERSTORMS.

PEOPLE IN BENTON...DESOTO...LAFAYETTE...MARSHALL...PANOLA AND TATE
COUNTIES...INCLUDING LOCATIONS NEAR HOLLY SPRINGS...OLIVE BRANCH AND
WALL DOXEY STATE PARK...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3446 8926 3446 8997 3500 8986 3499 8916
TIME...MOT...LOC 1031Z 271DEG 45KT 3500 8964 3450 8974

Special weather statement, Dec 20, 4:32 AM CST, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
432 AM CST THU DEC 20 2012

MSZ012-013-020>022-201115-
YALOBUSHA MS-TALLAHATCHIE MS-PANOLA MS-LAFAYETTE MS-CALHOUN MS-
432 AM CST THU DEC 20 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 515 AM CST FOR...

  WESTERN CALHOUN COUNTY IN NORTHEAST MISSISSIPPI...
  LAFAYETTE COUNTY IN NORTHWEST MISSISSIPPI...
  EASTERN PANOLA COUNTY IN NORTHWEST MISSISSIPPI...
  EASTERN TALLAHATCHIE COUNTY IN NORTHWEST MISSISSIPPI...
  YALOBUSHA COUNTY IN NORTHWEST MISSISSIPPI...

A LINE OF STRONG THUNDERSTORMS PRODUCING WINDS AT LEAST 45 MPH WAS
LOCATED FROM 3 MILES SOUTHWEST OF JOHN W KYLE STATE PARK TO 3 MILES
EAST OF PAYNES AT 433 AM CST...MOVING EAST AT 40 MPH.

VERY HEAVY RAIN WILL OCCUR WITH THESE THUNDERSTORMS.

PEOPLE IN CALHOUN...LAFAYETTE...PANOLA...TALLAHATCHIE AND YALOBUSHA
COUNTIES...INCLUDING LOCATIONS NEAR BATESVILLE...CHARLESTON...GEORGE
PAYNE STATE PARK...HOLLY SPRINGS NATIONAL FOREST...JOHN W KYLE STATE
PARK...OXFORD AND WATER VALLEY...SHOULD MONITOR THIS STORM CLOSELY.
THIS SIGNIFICANT WEATHER ALERT ALSO INCLUDES SARDIS LAKE.

&&

LAT...LON 3447 8994 3447 8925 3372 8949 3373 8952
      3386 8952 3386 8977 3389 8978 3389 8992
      3382 8993 3380 9013 3373 9013 3372 9017
TIME...MOT...LOC 1033Z 268DEG 35KT 3439 8980 3391 8999

Special weather statement, Dec 20, 4:52 AM CST, 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
452 AM CST THU DEC 20 2012

MSZ003-TNZ050-052-053-089-090-201130-
BENTON MS-CHESTER TN-FAYETTE TN-HARDEMAN TN-HAYWOOD TN-MADISON TN-
452 AM CST THU DEC 20 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 530 AM CST FOR...

  EXTREME NORTHWESTERN BENTON COUNTY IN NORTHEAST MISSISSIPPI...
  SOUTHWESTERN CHESTER COUNTY IN SOUTHWEST TENNESSEE...
  EASTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
  HARDEMAN COUNTY IN SOUTHWEST TENNESSEE...
  SOUTHEASTERN HAYWOOD COUNTY IN SOUTHWEST TENNESSEE...
  EXTREME SOUTHWESTERN MADISON COUNTY IN SOUTHWEST TENNESSEE...

A LINE OF STRONG THUNDERSTORMS PRODUCING WINDS AT LEAST 40 MPH WAS
LOCATED FROM DANCYVILLE TO 11 MILES WEST OF LAGRANGE AT 452 AM CST...
MOVING EAST AT 50 MPH.

VERY HEAVY RAIN WILL OCCUR WITH THESE THUNDERSTORMS.

PEOPLE IN BENTON...CHESTER...FAYETTE...HARDEMAN...HAYWOOD AND MADISON
COUNTIES...INCLUDING LOCATIONS NEAR BOLIVAR...CHICKASAW STATE FOREST
AND CHICKASAW STATE PARK...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3499 8885 3499 8935 3500 8949 3543 8932
      3543 8872
TIME...MOT...LOC 1052Z 269DEG 50KT 3541 8924 3500 8937

Special weather statement, Dec 20, 4:58 AM CST, 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
458 AM CST THU DEC 20 2012

TNZ020-021-050>054-090-201145-
CARROLL TN-CHESTER TN-CROCKETT TN-GIBSON TN-HARDEMAN TN-HAYWOOD TN-
HENDERSON TN-MADISON TN-
458 AM CST THU DEC 20 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 545 AM CST FOR...

  CARROLL COUNTY IN NORTHWEST TENNESSEE...
  SOUTHEASTERN CROCKETT COUNTY IN NORTHWEST TENNESSEE...
  SOUTHERN GIBSON COUNTY IN NORTHWEST TENNESSEE...
  NORTHERN CHESTER COUNTY IN SOUTHWEST TENNESSEE...
  EXTREME NORTHWESTERN HARDEMAN COUNTY IN SOUTHWEST TENNESSEE...
  EASTERN HAYWOOD COUNTY IN SOUTHWEST TENNESSEE...
  WESTERN HENDERSON COUNTY IN SOUTHWEST TENNESSEE...
  MADISON COUNTY IN SOUTHWEST TENNESSEE...

A LINE OF STRONG THUNDERSTORMS PRODUCING WINDS AT LEAST 40 MPH WAS
LOCATED FROM 4 MILES WEST OF BRADFORD TO 4 MILES SOUTHEAST OF
DANCYVILLE AT 458 AM CST...MOVING EAST AT 50 MPH.

VERY HEAVY RAIN WILL OCCUR WITH THESE THUNDERSTORMS.

PEOPLE IN CARROLL...CHESTER...CROCKETT...GIBSON...HARDEMAN...
HAYWOOD...HENDERSON AND MADISON COUNTIES...INCLUDING LOCATIONS NEAR
CHICKASAW STATE PARK...HENDERSON...HUMBOLDT...HUNTINGDON...JACKSON...
LEXINGTON...MILAN AND TRENTON...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3539 8853 3540 8933 3608 8899 3608 8873
      3607 8870 3607 8866 3608 8865 3608 8820
      3602 8820
TIME...MOT...LOC 1058Z 271DEG 44KT 3606 8883 3540 8918

Special weather statement, Dec 20, 5:10 AM CST, 2 minutes before

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Special weather statement, Dec 20, 5:12 AM CST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 20, 3:15 AM CST	Special Weather Statement	MEG	Coahoma, Quitman, Tunica	30 min
Dec 20, 3:30 AM CST	Special Weather Statement	MEG	DeSoto	45 min
Dec 20, 3:47 AM CST	Special Weather Statement	MEG	Panola, Quitman, Tallahatchie, Tate, Tunica	28 min
Dec 20, 3:49 AM CST	Severe Thunderstorm Warning	MEG	Coahoma, DeSoto, Lafayette, Marshall, Panola, Quitman and 4 more	41 min
Dec 20, 4:03 AM CST	Severe Thunderstorm Warning	MEG	DeSoto, Marshall	42 min
Dec 20, 4:31 AM CST	Special Weather Statement	MEG	Benton, Marshall	44 min
Dec 20, 4:32 AM CST	Special Weather Statement	MEG	Lafayette, Panola, Yalobusha	43 min
Dec 20, 5:10 AM CST	Special Weather Statement	MEG	Alcorn, Benton, Prentiss, Tippah, Union	35 min
Dec 20, 5:45 AM CST	Special Weather Statement	MEG	Alcorn, Prentiss, Tippah, Tishomingo, Union	45 min
Dec 20, 5:48 AM CST	Special Weather Statement	MEG	Chickasaw, Itawamba, Lee, Monroe	57 min
Dec 20, 3:13 AM CST	Special Weather Statement	MEG	Lake	47 min
Dec 20, 3:32 AM CST	Special Weather Statement	MEG	Dyer, Lauderdale	43 min
Dec 20, 4:08 AM CST	Special Weather Statement	MEG	Dyer, Lake, Obion	37 min
Dec 20, 4:20 AM CST	Special Weather Statement	MEG	Crockett, Dyer, Gibson, Haywood, Lauderdale, Tipton	40 min
Dec 20, 4:26 AM CST	Special Weather Statement	MEG	Fayette	34 min
Dec 20, 4:52 AM CST	Special Weather Statement	MEG	Hardeman	38 min
Dec 20, 4:58 AM CST	Special Weather Statement	MEG	Carroll, Chester, Gibson, Madison	47 min
Dec 20, 5:29 AM CST	Special Weather Statement	MEG	McNairy	46 min
Dec 20, 1:36 AM CST	Special Weather Statement	MEG	Lawrence, Randolph	39 min
Dec 20, 2:04 AM CST	Special Weather Statement	MEG	Cross, Poinsett	41 min
Dec 20, 2:18 AM CST	Special Weather Statement	MEG	Craighead	27 min
Dec 20, 2:37 AM CST	Special Weather Statement	MEG	Lee, Phillips	23 min
Dec 20, 2:41 AM CST	Special Weather Statement	MEG	Lee, St. Francis	49 min
Dec 20, 2:50 AM CST	Special Weather Statement	MEG	Craighead, Cross, Mississippi, Poinsett	40 min

Nearby

Special Weather Statements in Mississippi, 2012 Every 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.