Alert archive / Arkansas / Tornado Warnings in 2018

Tornado Warning 2, NWS Memphis, TN

February 24, 2018Clay County, Greene County, Randolph County, Arkansas; Dunklin County, Missouri

NWS Memphis, TN issued this tornado warning at Feb 24, 2018, 5:14 PM CST for Clay County, Greene County, Randolph County, Arkansas; Dunklin County, Missouri. It was in force for 46 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
Feb 24, 2018, 5:14 PM CST (23:14 UTC)
Expired
Feb 24, 2018, 6:00 PM CST
In force
46 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Clay County, AR, Greene County, AR, Randolph County, AR, Dunklin County, MO

The radar

The Memphis radar (KNQA), 127 km from the middle of the area, began a volume at 23:14 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
Feb 24, 5:30 PM CSTTSTM WND DMG1 Nw Piggott, AR2 HOUSES HAD THE ROOFS TORN OFF COMPLETELY ON COUNTY ROAD 341.
Feb 24, 5:30 PM CSTTORNADO3 E Knobel, AR*** 1 FATAL *** POSSIBLE TORNADO. A TRAILER WAS BLOWN INTO A POND NEAR HIGHWAY 90 EAST OF HIGHWAY 135. ONE FATALITY REPORTED.

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.

IssuedProductOfficeLasted
Feb 24, 3:16 PM CSTTornado WatchSPC8 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 11.2 hours before the alert went out and 180 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 2018-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 joules per kilogram.LCLLFCEL10008507005003002001001 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 2018-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.1939587897117Sfc1 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
42 J/kg
Mixed-layer CIN
-186 J/kg
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

159 
WFUS54 KMEG 242314
TORMEG
ARC021-055-121-MOC069-250000-
/O.NEW.KMEG.TO.W.0002.180224T2314Z-180225T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
514 PM CST SAT FEB 24 2018

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northwestern Greene County in eastern Arkansas...
  East central Randolph County in eastern Arkansas...
  Clay County in eastern Arkansas...
  Northeastern Dunklin County in southeastern Missouri...

* Until 600 PM CST
    
* At 514 PM CST, a severe thunderstorm producing a tornado was
  located over Delaplaine, or 12 miles east of Pocahontas, moving
  northeast at 55 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Piggott, Corning, Campbell, Chalk Bluff Natural Area, Holcomb,
  Lafe, Knobel, St. Francis, Pollard, Greenway, McDougal, Peach
  Orchard, Delaplaine, Glennonville, Evening Star, Saint Francis,
  Crockett, Stonewall, Tipperary and Hickoria.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3663 9007 3641 8996 3640 8997 3613 9076
      3615 9075 3615 9077 3629 9087 3650 9038
      3650 9022 3654 9021 3655 9019 3658 9018
TIME...MOT...LOC 2314Z 240DEG 49KT 3625 9074 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
3 follow-up statements
251 
WWUS54 KMEG 242320
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
520 PM CST SAT FEB 24 2018

ARC121-242330-
/O.CAN.KMEG.TO.W.0002.000000T0000Z-180225T0000Z/
Randolph AR-
520 PM CST SAT FEB 24 2018

...THE TORNADO WARNING FOR EAST CENTRAL RANDOLPH COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area.  Therefore, the warning has been cancelled.

A tornado watch remains in effect until 900 PM CST for eastern
Arkansas...and southeastern Missouri.

LAT...LON 3663 9007 3642 8996 3640 8997 3617 9065
      3621 9069 3632 9075 3633 9075 3650 9038
      3650 9022 3654 9021 3655 9019 3658 9018
TIME...MOT...LOC 2320Z 240DEG 49KT 3629 9065 

$$

ARC021-055-MOC069-250000-
/O.CON.KMEG.TO.W.0002.000000T0000Z-180225T0000Z/
Greene AR-Clay AR-Dunklin MO-
520 PM CST SAT FEB 24 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CST FOR NORTH
CENTRAL GREENE...CLAY AND NORTHEASTERN DUNKLIN COUNTIES...
    
At 520 PM CST, a severe thunderstorm producing a tornado was located
over Peach Orchard, or 8 miles southwest of Corning, moving northeast
at 55 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Piggott, Corning, Campbell, Chalk Bluff Natural Area, Holcomb, Lafe,
Knobel, St. Francis, Pollard, Greenway, McDougal, Peach Orchard,
Glennonville, Saint Francis, Crockett, Stonewall, Tipperary,
Hickoria, Brookings and Heelstring.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3663 9007 3642 8996 3640 8997 3617 9065
      3621 9069 3632 9075 3633 9075 3650 9038
      3650 9022 3654 9021 3655 9019 3658 9018
TIME...MOT...LOC 2320Z 240DEG 49KT 3629 9065 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
775 
WWUS54 KMEG 242338
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
538 PM CST SAT FEB 24 2018

ARC055-242347-
/O.CAN.KMEG.TO.W.0002.000000T0000Z-180225T0000Z/
Greene AR-
538 PM CST SAT FEB 24 2018

...THE TORNADO WARNING FOR NORTH CENTRAL GREENE COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. **! Therefore, the warning has been cancelled.

A tornado watch remains in effect until 900 PM CST for eastern
Arkansas...and southeastern Missouri.

LAT...LON 3642 8996 3640 8997 3626 9038 3626 9042
      3640 9053 3643 9054 3650 9038 3650 9022
      3654 9021 3655 9019 3658 9018 3663 9007
TIME...MOT...LOC 2337Z 240DEG 49KT 3641 9040 

$$

ARC021-MOC069-250000-
/O.CON.KMEG.TO.W.0002.000000T0000Z-180225T0000Z/
Clay AR-Dunklin MO-
538 PM CST SAT FEB 24 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CST FOR EASTERN
CLAY AND NORTHEASTERN DUNKLIN COUNTIES...
    
At 537 PM CST, a severe thunderstorm producing a tornado was located
over McDougal, or 10 miles east of Corning, moving northeast at 55
mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Piggott, Campbell, Chalk Bluff Natural Area, Holcomb, St. Francis,
Pollard, Greenway, McDougal, Saint Francis, Glennonville, Crockett,
Tipperary, Hickoria, Rhyne, Valley Ridge, Wilhelmina and Brian.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3642 8996 3640 8997 3626 9038 3626 9042
      3640 9053 3643 9054 3650 9038 3650 9022
      3654 9021 3655 9019 3658 9018 3663 9007
TIME...MOT...LOC 2337Z 240DEG 49KT 3641 9040 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
827 
WWUS54 KMEG 242348
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
548 PM CST SAT FEB 24 2018

ARC021-MOC069-250000-
/O.CON.KMEG.TO.W.0002.000000T0000Z-180225T0000Z/
Clay AR-Dunklin MO-
548 PM CST SAT FEB 24 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CST FOR
NORTHEASTERN CLAY AND NORTHEASTERN DUNKLIN COUNTIES...
    
At 548 PM CST, a severe thunderstorm producing a tornado was located
over Piggott, moving east at 55 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Piggott, Campbell, Chalk Bluff Natural Area, Holcomb, St. Francis,
Pollard, Greenway, Saint Francis, Glennonville, Crockett, Rhyne,
Valley Ridge, Wilhelmina and Brian.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3642 8996 3640 8997 3630 9026 3630 9031
      3643 9038 3650 9038 3650 9022 3654 9021
      3655 9019 3658 9018 3663 9007
TIME...MOT...LOC 2348Z 250DEG 48KT 3642 9021 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 9:26 AM CSTDense Fog AdvisoryMEGClay, Greene, Lawrence, Randolph4 hr
Feb 24, 1:32 PM CSTFlash Flood WarningMEGClay, Greene, Lawrence, Randolph6 hr
Feb 24, 4:28 PM CSTFlash Flood WarningMEGCraighead, Cross, Poinsett4 hr
Feb 24, 4:33 PM CSTSevere Thunderstorm WarningMEGCraighead, Greene, Lawrence, Randolph42 min
Feb 24, 4:51 PM CSTSevere Thunderstorm WarningMEGClay, Randolph39 min
Feb 24, 5:02 PM CSTSevere Thunderstorm WarningMEGCraighead, Poinsett43 min
Feb 24, 5:05 PM CSTSevere Thunderstorm WarningMEGClay, Greene, Lawrence, Randolph40 min
Feb 24, 5:06 PM CSTTornado WarningMEGClay, Randolph24 min
Feb 24, 5:15 PM CSTTornado WarningMEGClay, Craighead, Greene, Lawrence24 min
Feb 24, 5:18 PM CSTSevere Thunderstorm WarningMEGCrittenden, Cross, Poinsett42 min
Feb 24, 5:29 PM CSTTornado WarningMEGCraighead, Mississippi, Poinsett10 min
Feb 24, 5:34 PM CSTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, St. Francis41 min
Feb 24, 5:40 PM CSTFlash Flood WarningMEGLee, St. Francis5 hr
Feb 24, 5:42 PM CSTFlash Flood WarningMEGMississippi6 hr
Feb 24, 5:42 PM CSTSevere Thunderstorm WarningMEGClay, Craighead, Crittenden, Greene, Mississippi, Poinsett48 min
Feb 24, 5:56 PM CSTTornado WarningMEGClay23 min
Feb 24, 5:19 PM CSTFlash Flood WarningMEGPemiscot6 hr

Nearby

Tornado Warnings in Arkansas, 2018Tornado Warnings in Missouri, 2018Every tornado warning in 2018Tornadoes in 2018

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.