Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 79, NWS Memphis, TN

April 9, 2021Lee County, Phillips County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Apr 9, 2021, 5:31 PM CDT for Lee County, Phillips County, Arkansas. It was in force for 27 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 9, 2021, 5:31 PM CDT (22:31 UTC)
Expired
Apr 9, 2021, 5:58 PM CDT
In force
27 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Lee County, AR, Phillips County, AR

The radar

The Memphis radar (KNQA), 109 km from the middle of the area, began a volume at 22:34 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 watch it was issued in

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

IssuedProductOfficeLasted
Apr 9, 3:42 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 10.5 hours before the alert went out and 74 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-pSkew-T log-p diagram, Little Rock, AR at 12:00Z on 2021-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

560 
WUUS54 KMEG 092231
SVRMEG
ARC077-107-092315-
/O.NEW.KMEG.SV.W.0079.210409T2231Z-210409T2315Z/

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

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Central Lee County in eastern Arkansas...
  Northwestern Phillips County in eastern Arkansas...

* Until 615 PM CDT.

* At 531 PM CDT, a severe thunderstorm was located over Palmer, or 7
  miles west of Marvell, moving northeast at 40 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...
  Marianna, Marvell, Lexa, Moro, Rondo, Aubrey, Haynes, Watkins
  Corner, Lagrange, Jeffersonville, Oak Forest, Westor, Haleside,
  Latour, Turkey Scratch, Vineyard, Cypress Corner, Poplar Grove, Big
  Creek Corner and Barton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3473 9105 3491 9085 3491 9081 3470 9056
      3467 9059 3466 9058 3466 9055 3467 9054
      3466 9052 3464 9055 3465 9056 3464 9058
      3463 9059 3442 9100 3447 9100 3447 9106
TIME...MOT...LOC 2231Z 224DEG 34KT 3456 9104 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
200 
WWUS54 KMEG 092258
SVSMEG

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

ARC077-107-092308-
/O.CAN.KMEG.SV.W.0079.000000T0000Z-210409T2315Z/
Lee AR-Phillips AR-
558 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL LEE AND NORTHWESTERN
PHILLIPS COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

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

LAT...LON 3473 9105 3491 9085 3491 9081 3470 9056
      3467 9059 3466 9058 3466 9055 3467 9054
      3466 9052 3464 9055 3465 9056 3464 9058
      3463 9059 3442 9100 3447 9100 3447 9106
TIME...MOT...LOC 2255Z 224DEG 34KT 3474 9082 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 3:37 PM CDTSpecial Weather StatementMEGCraighead23 min
Apr 9, 3:45 PM CDTSpecial Weather StatementMEGCraighead30 min
Apr 9, 3:57 PM CDTSevere Thunderstorm WarningMEGCraighead, Greene, Mississippi, Poinsett48 min
Apr 9, 4:07 PM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene53 min
Apr 9, 4:19 PM CDTSevere Thunderstorm WarningMEGClay, Greene41 min
Apr 9, 5:24 PM CDTSpecial Weather StatementMEGLee36 min
Apr 9, 5:26 PM CDTSevere Thunderstorm WarningMEGPhillips49 min
Apr 9, 5:50 PM CDTSevere Thunderstorm WarningMEGPhillips40 min
Apr 9, 6:04 PM CDTSpecial Weather StatementMEGSt. Francis26 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2021Every 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.