Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 55, NWS Tulsa, OK

April 28, 20214 counties in Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 28, 2021, 8:40 AM CDT for 4 counties in Arkansas. It was in force for 50 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 28, 2021, 8:40 AM CDT (13:40 UTC)
Expired
Apr 28, 2021, 9:30 AM CDT
In force
50 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR

The radar

The Western Arkansas radar (KSRX), 120 km from the middle of the area, began a volume at 13:40 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 28, 3:01 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 1.7 hours before the alert went out and 85 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, Springfield, MO at 12:00Z on 2021-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 34 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, Springfield, MO at 12:00Z on 2021-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.1939587897Sfc1 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
34 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
1441 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

574 
WUUS54 KTSA 281340
SVRTSA
ARC007-015-087-143-281430-
/O.NEW.KTSA.SV.W.0055.210428T1340Z-210428T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
840 AM CDT Wed Apr 28 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northeastern Benton County in northwestern Arkansas...
  Northern Madison County in northwestern Arkansas...
  Carroll County in northwestern Arkansas...
  Northeastern Washington County in northwestern Arkansas...

* Until 930 AM CDT.

* At 839 AM CDT, severe thunderstorms were located along a line
  extending from 4 miles west of Beaver to 5 miles north of Clifty to
  4 miles southwest of Hindsville, moving east at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations in or near the path include...
  Berryville...                     Huntsville...
  Eureka Springs...                 Elkins...
  Gateway...                        Beaver...
  Hindsville...                     Wesley...
  Rudd...                           Kingston...
  Forum...                          Hobbs State Park...
  Clifty...                         Withrow Springs State Park...
  War Eagle...                      Marble...
  Urbanette...                      Grandview...
  Rule...                           Goshen...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Arkansas.

LAT...LON 3600 9345 3602 9405 3650 9394 3650 9346
      3612 9346 3612 9348 3608 9348 3608 9345
TIME...MOT...LOC 1339Z 265DEG 23KT 3649 9385 3632 9382 3611 9394 

HAIL...<.75IN
WIND...60MPH
 
$$
3 follow-up statements
363 
WWUS54 KTSA 281346
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
846 AM CDT Wed Apr 28 2021

ARC007-015-087-143-281430-
/O.CON.KTSA.SV.W.0055.000000T0000Z-210428T1430Z/
Benton AR-Madison AR-Carroll AR-Washington AR-
846 AM CDT Wed Apr 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR NORTHEASTERN BENTON...NORTHERN MADISON...CARROLL AND NORTHEASTERN
WASHINGTON COUNTIES...

At 845 AM CDT, severe thunderstorms were located along a line
extending from 2 miles northwest of Beaver to 4 miles southwest of
Eureka Springs to 3 miles southwest of Hindsville, moving east at 25
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations in or near the path include...
Berryville...                     Huntsville...
Eureka Springs...                 Elkins...
Gateway...                        Beaver...
Hindsville...                     Wesley...
Rudd...                           Kingston...
Forum...                          Hobbs State Park...
Clifty...                         Withrow Springs State Park...
War Eagle...                      Marble...
Urbanette...                      Grandview...
Rule...                           Goshen...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Arkansas.

LAT...LON 3600 9345 3602 9405 3650 9394 3650 9346
      3612 9346 3612 9348 3608 9348 3608 9345
TIME...MOT...LOC 1345Z 263DEG 24KT 3649 9381 3637 9379 3611 9390 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$
293 
WWUS54 KTSA 281358
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
858 AM CDT Wed Apr 28 2021

ARC007-143-281407-
/O.CAN.KTSA.SV.W.0055.000000T0000Z-210428T1430Z/
Benton AR-Washington AR-
858 AM CDT Wed Apr 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BENTON AND
NORTHEASTERN WASHINGTON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of
the warned area. Therefore the warning has been cancelled.

A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Arkansas.

LAT...LON 3618 9385 3631 9384 3631 9382 3632 9384
      3650 9383 3650 9346 3613 9346
TIME...MOT...LOC 1357Z 267DEG 37KT 3649 9360 3637 9358 3622 9369 

$$

ARC015-087-281430-
/O.CON.KTSA.SV.W.0055.000000T0000Z-210428T1430Z/
Madison AR-Carroll AR-
858 AM CDT Wed Apr 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR NORTHERN MADISON AND CENTRAL CARROLL COUNTIES...

At 857 AM CDT, severe thunderstorms were located along a line
extending from 4 miles north of Grandview to Berryville to 2 miles
northeast of Forum, moving east at 40 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations in or near the path include...
Berryville...                     Eureka Springs...
Beaver...                         Rudd...
Forum...                          Urbanette...
Grandview...                      Clifty...
Rule...                           Rockhouse...
Dryfork...                        Cabanal...
Metalton...                       Pleasant Ridge...
Oak Hill...                       Busch...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Arkansas.

LAT...LON 3618 9385 3631 9384 3631 9382 3632 9384
      3650 9383 3650 9346 3613 9346
TIME...MOT...LOC 1357Z 267DEG 37KT 3649 9360 3637 9358 3622 9369 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$
005 
WWUS54 KTSA 281417
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
917 AM CDT Wed Apr 28 2021

ARC015-087-281430-
/O.CON.KTSA.SV.W.0055.000000T0000Z-210428T1430Z/
Madison AR-Carroll AR-
917 AM CDT Wed Apr 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR NORTHEASTERN MADISON AND CENTRAL CARROLL COUNTIES...

At 917 AM CDT, severe thunderstorms were located along a line
extending from 7 miles northeast of Urbanette to 3 miles north of
Green Forest to 3 miles west of Rudd, moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations in or near the path include...
Berryville...                     Rudd...
Urbanette...                      Grandview...
Forum...                          Rule...
Rockhouse...                      Dryfork...
Cabanal...                        Metalton...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A Tornado Watch remains in effect until 1000 AM CDT for northwestern
Arkansas.

LAT...LON 3617 9376 3650 9360 3650 9346 3613 9346
TIME...MOT...LOC 1417Z 265DEG 23KT 3650 9346 3638 9344 3623 9355 

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

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 6:26 AM CDTTornado WarningTSAWashington18 min
Apr 28, 6:47 AM CDTSpecial Weather StatementTSAWashington43 min
Apr 28, 7:04 AM CDTSpecial Weather StatementTSABenton26 min
Apr 28, 7:20 AM CDTAreal Flood AdvisoryTSABenton, Washington4 hr
Apr 28, 7:34 AM CDTSpecial Weather StatementTSABenton26 min
Apr 28, 7:47 AM CDTSevere Thunderstorm WarningTSABenton, Carroll43 min
Apr 28, 7:52 AM CDTFlash Flood WarningTSABenton, Washington5 hr
Apr 28, 7:58 AM CDTSpecial Weather StatementTSABenton32 min
Apr 28, 8:03 AM CDTTornado Warning Tornado observedTSABenton27 min
Apr 28, 8:13 AM CDTTornado WarningTSACarroll22 min
Apr 28, 8:16 AM CDTSevere Thunderstorm WarningTSABenton, Washington44 min
Apr 28, 8:27 AM CDTSpecial Weather StatementTSACrawford, Washington48 min
Apr 28, 8:29 AM CDTFlash Flood WarningTSABenton, Carroll, Madison, Washington4 hr
Apr 28, 9:04 AM CDTSevere Thunderstorm WarningTSACarroll26 min
Apr 28, 9:15 AM CDTSpecial Weather StatementTSACrawford, Franklin, Madison45 min
Apr 28, 9:26 AM CDTSpecial Weather StatementTSACarroll19 min
Apr 28, 9:42 AM CDTAreal Flood AdvisoryTSACarroll, Madison, Washington3 hr
Apr 28, 9:56 AM CDTSpecial Weather StatementTSACarroll, Franklin, Madison34 min
Apr 28, 9:58 AM CDTRiver Flood WarningTSACrawford41 hr
Apr 28, 9:58 AM CDTRiver Flood WarningTSACrawford, Sebastian41 hr
Apr 28, 9:58 AM CDTRiver Flood WarningTSAFranklin, Johnson, Logan70 hr
Apr 28, 10:34 AM CDTSpecial Weather StatementTSAFranklin41 min
Apr 28, 11:34 AM CDTAreal Flood AdvisoryTSACrawford, Franklin3 hr
Apr 28, 11:52 AM CDTFlash Flood WarningTSABenton, Carroll, Crawford, Franklin, Madison, Washington8 hr
Apr 28, 4:42 PM CDTRiver Flood AdvisoryTSACrawford, Franklin19 hr

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.