Alert archive / Missouri / Special Weather Statements in 2011

Special Weather Statement, NWS Memphis, TN

August 7, 2011Dunklin County, Missouri

NWS Memphis, TN issued this special weather statement at Aug 7, 2011, 2:55 AM CDT for Dunklin County, Missouri. It was in force for 35 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 7, 2011, 2:55 AM CDT (07:55 UTC)
Expired: Aug 7, 2011, 3:30 AM CDT
In force: 35 min
Issued by: NWS Memphis, TN

County Dunklin County, MO

The radar

The Memphis radar (KNQA), 78 km from the middle of the area, began a volume at 07:55 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, 7.9 hours before the alert went out and 132 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: 2335 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 2256 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.1

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 6, 11:43 PM CDT, 3 hours 12 minutes earlier.

Area forecast discussion, Aug 6, 11:43 PM CDT, 3 hours 12 minutes before

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Hazardous weather outlook, Aug 6, 9:46 PM CDT, 5 hours 9 minutes before

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In the hours before

Special weather statement, Aug 6, 9:43 PM CDT, 5 hours 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
943 PM CDT SAT AUG 6 2011

ARZ008-017-070330-
LAWRENCE AR-RANDOLPH AR-
943 PM CDT SAT AUG 6 2011

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1030 PM CDT FOR...

  WESTERN LAWRENCE COUNTY IN EASTERN ARKANSAS...
  WESTERN RANDOLPH COUNTY IN EASTERN ARKANSAS...

A LINE OF STRONG THUNDERSTORMS PRODUCING WINDS AT LEAST 40 MPH WAS
LOCATED FROM 16 MILES NORTHWEST OF RAVENDEN SPRINGS TO 23 MILES WEST
OF STRAWBERRY AT 943 PM CDT...MOVING EAST AT 25 MPH.

VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS THUNDERSTORM.

PEOPLE IN LAWRENCE AND RANDOLPH COUNTIES...INCLUDING LOCATIONS NEAR
BLACK ROCK...LAKE CHARLES STATE PARK AND POCAHONTAS...SHOULD MONITOR
THIS STORM CLOSELY.

&&

LAT...LON 3650 9142 3650 9090 3592 9106 3595 9136
      3623 9136 3625 9133 3625 9126 3637 9128
      3639 9132 3641 9132 3643 9136 3646 9136
TIME...MOT...LOC 0243Z 281DEG 22KT 3646 9141 3629 9143
          3602 9170

Special weather statement, Aug 7, 2:55 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
255 AM CDT SUN AUG 7 2011

ARZ018-026-028-MOZ113-115-070830-
CRAIGHEAD AR-GREENE AR-MISSISSIPPI AR-DUNKLIN MO-PEMISCOT MO-
255 AM CDT SUN AUG 7 2011

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 330 AM CDT FOR...

  NORTHEASTERN CRAIGHEAD COUNTY IN EASTERN ARKANSAS...
  SOUTH CENTRAL GREENE COUNTY IN EASTERN ARKANSAS...
  NORTHWESTERN MISSISSIPPI COUNTY IN EASTERN ARKANSAS...
  SOUTHERN DUNKLIN COUNTY IN SOUTHEAST MISSOURI...
  SOUTHWESTERN PEMISCOT COUNTY IN SOUTHEAST MISSOURI...

A STRONG THUNDERSTORM PRODUCING WINDS AT LEAST 40 MPH WAS LOCATED 7
MILES NORTHWEST OF MONETTE AT 255 AM CDT...MOVING EAST AT 25 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS THUNDERSTORM.

PEOPLE IN CRAIGHEAD...DUNKLIN...GREENE...MISSISSIPPI AND PEMISCOT
COUNTIES...INCLUDING LOCATIONS NEAR BLYTHEVILLE...GOSNELL...
LEACHVILLE...MANILA AND MONETTE...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3612 8994 3588 8991 3586 9051 3604 9053
TIME...MOT...LOC 0755Z 265DEG 21KT 3595 9042

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 5:03 PM CDT	Special Weather Statement	MEG	Tishomingo	27 min
Aug 7, 5:07 PM CDT	Special Weather Statement	MEG	Tippah	23 min
Aug 7, 5:11 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Prentiss, Tippah	34 min
Aug 7, 5:35 PM CDT	Special Weather Statement	MEG	Tishomingo	25 min
Aug 7, 5:39 PM CDT	Severe Thunderstorm Warning	MEG	Alcorn, Prentiss, Tishomingo	51 min
Aug 7, 5:55 PM CDT	Special Weather Statement	MEG	Prentiss	35 min
Aug 7, 6:04 PM CDT	Flash Flood Warning	MEG	Alcorn, Prentiss, Tippah, Tishomingo	116 min
Aug 7, 6:09 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss, Tippah, Union	51 min
Aug 7, 6:26 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Prentiss, Tishomingo	34 min
Aug 7, 6:29 PM CDT	Special Weather Statement	MEG	Tippah	31 min
Aug 7, 6:38 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Lee, Prentiss	52 min
Aug 7, 6:58 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Prentiss, Tippah, Union	47 min
Aug 7, 5:47 AM CDT	Special Weather Statement	MEG	Carroll	28 min
Aug 6, 9:43 PM CDT	Special Weather Statement	MEG	Lawrence, Randolph	47 min
Aug 7, 5:29 PM CDT	Special Weather Statement	MEG	St. Francis	31 min

Nearby

Special Weather Statements in Missouri, 2011 Every 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.