Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 71, NWS Memphis, TN

April 7, 2021Dunklin County, Pemiscot County, Missouri

NWS Memphis, TN issued this severe thunderstorm warning at Apr 7, 2021, 8:44 PM CDT for Dunklin County, Pemiscot County, Missouri. It was in force for 31 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: Apr 7, 2021, 8:44 PM CDT (01:44 UTC)
Expired: Apr 7, 2021, 9:15 PM CDT
In force: 31 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Dunklin County, MO, Pemiscot County, MO

The radar

The Memphis radar (KNQA), 104 km from the middle of the area, began a volume at 01:44 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, 1.7 hours before the alert went out and 161 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: 696 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 597 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted.

424 
WUUS54 KMEG 080144
SVRMEG
MOC069-155-080215-
/O.NEW.KMEG.SV.W.0071.210408T0144Z-210408T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
844 PM CDT Wed Apr 7 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Pemiscot County in southeastern Missouri...
  Southeastern Dunklin County in southeastern Missouri...

* Until 915 PM CDT.

* At 844 PM CDT, a severe thunderstorm was located over Kennett,
  moving northeast at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Kennett, Caruthersville, Hayti, Hayti Heights, Wardell, Deering,
  Bolton, Bragg City, Pascola, Lorine, West Kennett, Noland, North
  Wardell, White Oak, Homestown, Rives, Ipley, Scobeville, New Survey
  and Vincit.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3624 8970 3624 8971 3614 8966 3607 9007
      3625 9012 3627 9011 3628 9008 3629 9008
      3630 9006 3632 9008 3634 9008 3638 9000
      3639 8993 3639 8976
TIME...MOT...LOC 0144Z 243DEG 30KT 3625 9000 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MJH

1 follow-up statement

982 
WWUS54 KMEG 080212
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
912 PM CDT Wed Apr 7 2021

MOC069-155-080222-
/O.EXP.KMEG.SV.W.0071.000000T0000Z-210408T0215Z/
Pemiscot MO-Dunklin MO-
912 PM CDT Wed Apr 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PEMISCOT AND
SOUTHEASTERN DUNKLIN COUNTIES WILL EXPIRE AT 915 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds are still possible with
this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Memphis.

LAT...LON 3624 8970 3624 8971 3614 8966 3607 9007
      3625 9012 3627 9011 3628 9008 3629 9008
      3630 9006 3632 9008 3634 9008 3638 9000
      3639 8993 3639 8976
TIME...MOT...LOC 0212Z 243DEG 30KT 3635 8975 

$$

MJH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 8:09 PM CDT	Special Weather Statement	MEG	Dunklin	51 min
Apr 7, 8:20 PM CDT	Severe Thunderstorm Warning	MEG	Dunklin, Pemiscot	25 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Every severe thunderstorm warning in 2021

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.