Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 75, NWS Memphis, TN

April 9, 2021Clay County, Greene County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Apr 9, 2021, 4:19 PM CDT for Clay County, Greene County, Arkansas. It was in force for 41 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 9, 2021, 4:19 PM CDT (21:19 UTC)
Expired: Apr 9, 2021, 5:00 PM CDT
In force: 41 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clay County, AR, Greene County, AR

The radar

The Memphis radar (KNQA), 125 km from the middle of the area, began a volume at 21:22 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.

What was reported inside it

Time	Report	Where	Remark
Apr 9, 4:25 PM CDT	HAIL 0.88	5 E Knobel, AR
Apr 9, 4:35 PM CDT	HAIL 1.25	Lafe, AR	REPORT OF SILVER DOLLAR SIZED HAIL OVER LAFE ARKANSAS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 9, 3:42 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.3 hours before the alert went out and 179 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2139 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WUUS54 KMEG 092119
SVRMEG
ARC021-055-092200-
/O.NEW.KMEG.SV.W.0075.210409T2119Z-210409T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
419 PM CDT Fri Apr 9 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  North central Greene County in eastern Arkansas...
  Central Clay County in eastern Arkansas...

* Until 500 PM CDT.

* At 419 PM CDT, a severe thunderstorm was located near Lafe, or 10
  miles west of Marmaduke, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Piggott, Corning, Chalk Bluff Natural Area, Oak Grove Heights,
  Lafe, Knobel, St. Francis, Pollard, McDougal, Peach Orchard, Saint
  Francis, Beech Grove, Crockett, Stonewall, Tipperary, Hickoria,
  Gainesville, Knob and Chalk Bluff Battlefield Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3650 9015 3648 9016 3648 9014 3647 9015
      3647 9014 3644 9014 3611 9054 3623 9071
      3650 9054
TIME...MOT...LOC 2119Z 218DEG 24KT 3624 9057 

HAIL...1.00IN
WIND...60MPH
 
$$

SJM

3 follow-up statements

706 
WWUS54 KMEG 092135
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
435 PM CDT Fri Apr 9 2021

ARC021-055-092200-
/O.CON.KMEG.SV.W.0075.000000T0000Z-210409T2200Z/
Greene AR-Clay AR-
435 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR NORTH CENTRAL GREENE AND CENTRAL CLAY COUNTIES...

At 434 PM CDT, a severe thunderstorm was located near Lafe, or near
Marmaduke, moving northeast at 30 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Piggott, Corning, Chalk Bluff Natural Area, Lafe, Knobel, St.
Francis, Pollard, McDougal, Saint Francis, Crockett, Stonewall,
Tipperary, Hickoria, Gainesville, Knob and Chalk Bluff Battlefield
Park.

Golfball size hail was reported near Paragould at 420 pm CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3650 9015 3648 9016 3648 9014 3647 9015
      3647 9014 3644 9014 3614 9050 3636 9063
      3650 9054
TIME...MOT...LOC 2134Z 209DEG 28KT 3623 9046 

HAIL...1.75IN
WIND...60MPH
 
$$

SJM

647 
WWUS54 KMEG 092145
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
445 PM CDT Fri Apr 9 2021

ARC055-092155-
/O.CAN.KMEG.SV.W.0075.000000T0000Z-210409T2200Z/
Greene AR-
445 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL GREENE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
eastern Arkansas...and southeastern Missouri.

LAT...LON 3650 9016 3648 9016 3648 9015 3647 9015
      3647 9014 3644 9014 3626 9036 3626 9047
      3639 9054 3650 9054
TIME...MOT...LOC 2145Z 218DEG 24KT 3629 9040 

$$

ARC021-092200-
/O.CON.KMEG.SV.W.0075.000000T0000Z-210409T2200Z/
Clay AR-
445 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR EASTERN CLAY COUNTY...

At 445 PM CDT, a severe thunderstorm was located near Rector, moving
northeast at 30 mph.

HAZARD...Two inch hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Piggott, Chalk Bluff Natural Area, St. Francis, Pollard, McDougal,
Saint Francis, Crockett, Knob, Tipperary, Hickoria and Chalk Bluff
Battlefield Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3650 9016 3648 9016 3648 9015 3647 9015
      3647 9014 3644 9014 3626 9036 3626 9047
      3639 9054 3650 9054
TIME...MOT...LOC 2145Z 218DEG 24KT 3629 9040 

HAIL...2.00IN
WIND...60MPH
 
$$

SJM

045 
WWUS54 KMEG 092159
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
459 PM CDT Fri Apr 9 2021

ARC021-092208-
/O.EXP.KMEG.SV.W.0075.000000T0000Z-210409T2200Z/
Clay AR-
459 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CLAY COUNTY WILL
EXPIRE AT 500 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
eastern Arkansas...and southeastern Missouri.

LAT...LON 3650 9016 3648 9016 3648 9015 3647 9015
      3647 9014 3644 9014 3626 9036 3626 9047
      3639 9054 3650 9054
TIME...MOT...LOC 2158Z 218DEG 24KT 3636 9033 

$$

SJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 3:37 PM CDT	Special Weather Statement	MEG	Craighead	23 min
Apr 9, 3:45 PM CDT	Special Weather Statement	MEG	Craighead	30 min
Apr 9, 3:57 PM CDT	Severe Thunderstorm Warning	MEG	Craighead, Greene, Mississippi, Poinsett	48 min
Apr 9, 4:07 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Craighead, Greene	53 min
Apr 9, 5:24 PM CDT	Special Weather Statement	MEG	Lee	36 min
Apr 9, 5:26 PM CDT	Severe Thunderstorm Warning	MEG	Phillips	49 min
Apr 9, 5:31 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Phillips	27 min
Apr 9, 5:50 PM CDT	Severe Thunderstorm Warning	MEG	Phillips	40 min
Apr 9, 6:04 PM CDT	Special Weather Statement	MEG	St. Francis	26 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.