Alert archive / Missouri / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

August 31, 2012Dunklin County, Missouri

NWS Memphis, TN issued this special weather statement at Aug 31, 2012, 6:08 PM CDT for Dunklin County, Missouri. It was in force for 37 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 31, 2012, 6:08 PM CDT (23:08 UTC)
Expired: Aug 31, 2012, 6:45 PM CDT
In force: 37 min
Issued by: NWS Memphis, TN

County Dunklin County, MO

The radar

The Memphis radar (KNQA), 126 km from the middle of the area, began a volume at 23:10 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, 11.1 hours before the alert went out and 182 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: 120 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 446 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 135 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 Aug 31, 3:53 PM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, Aug 31, 3:53 PM CDT, 2 hours 15 minutes before

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Hazardous weather outlook, Aug 31, 3:54 PM CDT, 2 hours 14 minutes before

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In the hours before

Special weather statement, Aug 31, 5:25 PM CDT, 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
525 PM CDT FRI AUG 31 2012

MSZ024-312300-
MONROE MS-
525 PM CDT FRI AUG 31 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 600 PM CDT FOR...

  SOUTHERN MONROE COUNTY IN NORTHEAST MISSISSIPPI...

A STRONG THUNDERSTORM PRODUCING WINDS UP TO 50 MPH WAS LOCATED 17
MILES SOUTH OF ABERDEEN AT 525 PM CDT...MOVING NORTH AT 35 MPH.

VERY HEAVY RAIN WILL OCCUR WITH THIS THUNDERSTORM.

PEOPLE IN MONROE COUNTY...INCLUDING LOCATIONS NEAR ABERDEEN...SHOULD
MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3368 8838 3366 8843 3365 8850 3366 8851
      3368 8851 3368 8867 3395 8862 3384 8829
TIME...MOT...LOC 2225Z 196DEG 30KT 3359 8856

Special weather statement, Aug 31, 6:08 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
608 PM CDT FRI AUG 31 2012

ARZ009-018-MOZ113-115-312345-
CLAY AR-GREENE AR-DUNKLIN MO-PEMISCOT MO-
608 PM CDT FRI AUG 31 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 645 PM CDT FOR...

  EASTERN CLAY COUNTY IN EASTERN ARKANSAS...
  NORTHEASTERN GREENE COUNTY IN EASTERN ARKANSAS...
  DUNKLIN COUNTY IN SOUTHEAST MISSOURI...
  NORTHWESTERN PEMISCOT COUNTY IN SOUTHEAST MISSOURI...

A STRONG THUNDERSTORM PRODUCING WINDS AT LEAST 40 MPH WAS LOCATED 5
MILES SOUTHEAST OF RECTOR AT 608 PM CDT...MOVING NORTHEAST AT 50 MPH.

VERY HEAVY RAIN WILL OCCUR WITH THIS THUNDERSTORM.

PEOPLE IN CLAY...DUNKLIN...GREENE AND PEMISCOT COUNTIES...INCLUDING
LOCATIONS NEAR CAMPBELL...CHALK BLUFF NATURAL AREA...KENNETT...
MALDEN...PIGGOTT...RECTOR AND SENATH...SHOULD MONITOR THIS STORM
CLOSELY.

.A TORNADO WATCH ALSO REMAINS IN EFFECT FOR THE ADVISORY AREA.

&&

LAT...LON 3663 8997 3660 8995 3645 8995 3640 8996
      3639 8989 3638 8988 3608 9021 3615 9039
      3655 9021 3655 9019 3661 9019 3664 9014
TIME...MOT...LOC 2308Z 207DEG 43KT 3625 9021

RRH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 7:05 PM CDT	Wind Advisory	MEG	Calhoun, Coahoma, DeSoto, Lafayette, Marshall, Panola and 5 more	4 hr
Aug 31, 7:14 AM CDT	Wind Advisory	MEG	Coahoma, DeSoto, Panola, Quitman, Tallahatchie, Tate and 1 more	11 hr
Aug 31, 5:25 PM CDT	Special Weather Statement	MEG	Monroe	35 min

Nearby

Special Weather Statements in Missouri, 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.