Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 103, NWS Memphis, TN

May 4, 2021Clay County, Greene County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at May 4, 2021, 12:38 AM CDT for Clay County, Greene County, Arkansas. It was in force for 52 min. 1 report 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
May 4, 2021, 12:38 AM CDT (05:38 UTC)
Expired
May 4, 2021, 1:30 AM CDT
In force
52 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Clay County, AR, Greene County, AR

The radar

The Memphis radar (KNQA), 124 km from the middle of the area, began a volume at 05:38 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

TimeReportWhereRemark
May 4, 1:20 AM CDTHAIL 0.88Peach Orchard, AR

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

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 5.6 hours before the alert went out and 170 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 00:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3608 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.193958Sfc1 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
3608 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1081 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
2.3
Supercell composite
15.3

Open this sounding in Storm Lab

The text

As transmitted.

787 
WUUS54 KMEG 040538
SVRMEG
ARC021-055-040630-
/O.NEW.KMEG.SV.W.0103.210504T0538Z-210504T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
1238 AM CDT Tue May 4 2021

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Greene County in eastern Arkansas...
  Southwestern Clay County in eastern Arkansas...

* Until 130 AM CDT.

* At 1237 AM CDT, a severe thunderstorm was located over Evening
  Star, or 10 miles north of Crowleys Ridge State Park, moving
  northeast at 25 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lafe, Reyno, Knobel, O'Kean, Peach Orchard, Delaplaine, Evening
  Star, Beech Grove, Heelstring, Stonewall, Case, Brookings, Knob and
  Faulknerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3635 9050 3626 9039 3608 9075 3610 9078
      3611 9077 3613 9077 3615 9075 3615 9081
      3628 9081 3630 9079 3628 9078 3629 9077
      3628 9075 3637 9075
TIME...MOT...LOC 0537Z 228DEG 20KT 3617 9073 

HAIL...1.25IN
WIND...60MPH
 
$$

MJ
3 follow-up statements
003 
WWUS54 KMEG 040553
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
1253 AM CDT Tue May 4 2021

ARC021-055-040630-
/O.CON.KMEG.SV.W.0103.000000T0000Z-210504T0630Z/
Greene AR-Clay AR-
1253 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR NORTHWESTERN GREENE AND SOUTHWESTERN CLAY COUNTIES...

At 1253 AM CDT, a severe thunderstorm was located over Evening Star,
or 10 miles north of Crowleys Ridge State Park, moving northeast at
10 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Lafe, Knobel, Peach Orchard, Delaplaine, Evening Star, Beech Grove,
Heelstring, Brookings, Knob, Stonewall, Faulknerville and Case.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3635 9050 3626 9039 3608 9075 3610 9078
      3611 9077 3613 9077 3615 9075 3615 9081
      3637 9071
TIME...MOT...LOC 0553Z 228DEG 9KT 3618 9071 

HAIL...1.25IN
WIND...60MPH
 
$$

MJ
951 
WWUS54 KMEG 040604
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
104 AM CDT Tue May 4 2021

ARC021-055-040630-
/O.CON.KMEG.SV.W.0103.000000T0000Z-210504T0630Z/
Greene AR-Clay AR-
104 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR NORTHWESTERN GREENE AND SOUTHWESTERN CLAY COUNTIES...

At 104 AM CDT, a severe thunderstorm was located over Evening Star,
or 12 miles north of Crowleys Ridge State Park, moving northeast at
20 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...
Lafe, Knobel, Peach Orchard, Delaplaine, Evening Star, Beech Grove,
Heelstring, Brookings, Knob, Stonewall, Faulknerville and Case.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3635 9050 3626 9039 3608 9075 3610 9078
      3611 9077 3613 9077 3615 9075 3615 9081
      3637 9071
TIME...MOT...LOC 0604Z 220DEG 18KT 3621 9067 

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

MJ
579 
WWUS54 KMEG 040617
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
117 AM CDT Tue May 4 2021

ARC021-055-040630-
/O.CON.KMEG.SV.W.0103.000000T0000Z-210504T0630Z/
Greene AR-Clay AR-
117 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR NORTHWESTERN GREENE AND SOUTHWESTERN CLAY COUNTIES...

At 116 AM CDT, a severe thunderstorm was located near Beech Grove, or
12 miles north of Crowleys Ridge State Park, moving northeast at 30
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Lafe, Knobel, Peach Orchard, Delaplaine, Evening Star, Beech Grove,
Heelstring, Brookings, Knob, Stonewall and Case.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3635 9050 3626 9039 3611 9070 3610 9078
      3611 9077 3613 9077 3615 9075 3615 9081
      3637 9071
TIME...MOT...LOC 0616Z 207DEG 27KT 3621 9064 

HAIL...1.25IN
WIND...60MPH
 
$$

MJ

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 1:30 AM CDTSevere Thunderstorm WarningMEGClay, Greene45 min
May 4, 1:46 AM CDTFlash Flood WarningMEGClay, Greene3 hr
May 4, 1:48 AM CDTSpecial Weather StatementMEGCraighead, Poinsett27 min
May 4, 1:57 AM CDTSevere Thunderstorm WarningMEGCraighead, Greene, Poinsett48 min
May 4, 2:08 AM CDTSevere Thunderstorm WarningMEGClay, Greene52 min
May 4, 2:25 AM CDTSevere Thunderstorm WarningMEGClay, Craighead, Mississippi50 min
May 4, 2:34 AM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett41 min
May 4, 2:58 AM CDTAreal Flood AdvisoryMEGClay2 hr
May 4, 2:59 AM CDTSevere Thunderstorm WarningMEGMississippi46 min
May 4, 3:10 AM CDTSpecial Weather StatementMEGCrittenden35 min
May 4, 4:47 AM CDTAreal Flood AdvisoryMEGCrittenden73 min
May 4, 11:37 AM CDTRiver Flood WarningMEGClay, Greene47 hr
May 4, 5:03 PM CDTSpecial Weather StatementMEGCraighead, Greene27 min
May 4, 5:29 PM CDTSpecial Weather StatementMEGCraighead, Greene, Poinsett31 min
May 4, 5:56 PM CDTSpecial Weather StatementMEGCraighead, Greene, Poinsett34 min
May 4, 6:20 PM CDTSpecial Weather StatementMEGCross40 min
May 4, 6:25 PM CDTSpecial Weather StatementMEGMississippi35 min
May 4, 6:29 PM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Mississippi, Poinsett46 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.