Alert archive / Arkansas / Tornado Warnings in 2019

Tornado Warning 23, NWS Tulsa, OK

April 30, 2019Benton County, Washington County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 30, 2019, 5:36 PM CDT for Benton County, Washington County, Arkansas. It was in force for 39 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 30, 2019, 5:36 PM CDT (22:36 UTC)
Expired
Apr 30, 2019, 6:15 PM CDT
In force
39 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Benton County, AR, Washington County, AR

The radar

The Western Arkansas radar (KSRX), 91 km from the middle of the area, began a volume at 22:37 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 30, 12:02 PM CDTTornado WatchSPC13 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.6 hours before the alert went out and 100 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 2019-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1237 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 2019-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 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
1237 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted.

286 
WFUS54 KTSA 302236
TORTSA
ARC007-143-302315-
/O.NEW.KTSA.TO.W.0023.190430T2236Z-190430T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
536 PM CDT Tue Apr 30 2019

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  South central Benton County in northwestern Arkansas...
  Northwestern Washington County in northwestern Arkansas...

* Until 615 PM CDT.
    
* At 536 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 5 miles east of Cincinnati, moving northeast at 30 mph.

  HAZARD...Tornado and quarter size hail.

  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 in or near the path include...
  Springdale...                     Rogers...
  Bentonville...                    Lowell...
  Tontitown...                      Bethel Heights...
  Cave Springs...                   Highfill...
  Northwest Arkansas Regional Air...
  Centerton...
  Johnson...                        Elm Springs...
  Vaughn...                         Savoy...
  Healing Springs...                Wedington...
  Rhea...                           Rocky Comfort...
  Wheeler...                        

This includes Interstate 49 between mile markers 69 and 78.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 3598 9441 3602 9450 3636 9431 3620 9407
TIME...MOT...LOC 2236Z 214DEG 26KT 3604 9442 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$
2 follow-up statements
949 
WWUS54 KTSA 302251
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
551 PM CDT Tue Apr 30 2019

ARC007-143-302315-
/O.CON.KTSA.TO.W.0023.000000T0000Z-190430T2315Z/
Benton AR-Washington AR-
551 PM CDT Tue Apr 30 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR SOUTH
CENTRAL BENTON AND NORTH CENTRAL WASHINGTON COUNTIES...
    
At 551 PM CDT, a severe thunderstorm capable of producing a tornado
was located 4 miles southwest of Tontitown, moving northeast at 35
mph.

HAZARD...Tornado and quarter size hail.

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 in or near the path include...
Springdale...                     Rogers...
Bentonville...                    Lowell...
Tontitown...                      Bethel Heights...
Cave Springs...                   Highfill...
Northwest Arkansas Regional Air...
Centerton...
Elm Springs...                    Vaughn...
Healing Springs...                Rocky Comfort...
Wheeler...                        

This includes Interstate 49 between mile markers 70 and 78.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 3610 9429 3614 9439 3636 9431 3620 9407
TIME...MOT...LOC 2251Z 218DEG 32KT 3615 9431 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$
167 
WWUS54 KTSA 302302
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
602 PM CDT Tue Apr 30 2019

ARC143-302312-
/O.CAN.KTSA.TO.W.0023.000000T0000Z-190430T2315Z/
Washington AR-
602 PM CDT Tue Apr 30 2019

...THE TORNADO WARNING FOR NORTH CENTRAL WASHINGTON 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 1100 PM CDT for northwestern
Arkansas.

LAT...LON 3621 9422 3622 9426 3632 9425 3622 9410
      3621 9409
TIME...MOT...LOC 2302Z 218DEG 36KT 3626 9421 

$$

ARC007-302315-
/O.CON.KTSA.TO.W.0023.000000T0000Z-190430T2315Z/
Benton AR-
602 PM CDT Tue Apr 30 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR CENTRAL
BENTON COUNTY...
    
At 602 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Cave Springs, moving northeast at 40 mph.

HAZARD...Tornado and quarter size hail.

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 in or near the path include...
Springdale...                     Rogers...
Lowell...                         Bethel Heights...
Cave Springs...                   

This includes Interstate 49 between mile markers 75 and 78.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 3621 9422 3622 9426 3632 9425 3622 9410
      3621 9409
TIME...MOT...LOC 2302Z 218DEG 36KT 3626 9421 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 9:34 AM CDTRiver Flood AdvisoryTSACrawford, Franklin18 hr
Apr 30, 1:08 PM CDTTornado WarningTSAMadison30 min
Apr 30, 1:27 PM CDTTornado WarningTSAMadison20 min
Apr 30, 3:11 PM CDTTornado WarningTSAWashington49 min
Apr 30, 3:51 PM CDTTornado WarningTSABenton39 min
Apr 30, 3:58 PM CDTTornado WarningTSABenton, Washington47 min
Apr 30, 4:07 PM CDTTornado WarningTSACarroll26 min
Apr 30, 4:25 PM CDTAreal Flood AdvisoryTSABenton, Washington3 hr
Apr 30, 4:40 PM CDTTornado WarningTSABenton, Carroll50 min
Apr 30, 5:18 PM CDTSpecial Weather StatementTSACrawford27 min
Apr 30, 6:05 PM CDTSevere Thunderstorm WarningTSABenton28 min
Apr 30, 6:19 PM CDTSpecial Weather StatementTSAWashington26 min
Apr 30, 6:47 PM CDTSpecial Weather StatementTSAMadison43 min

Nearby

Tornado Warnings in Arkansas, 2019Every tornado warning in 2019Tornadoes in 2019

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.