Alert archive / Arkansas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 50, NWS Tulsa, OK

April 30, 2019Benton County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 30, 2019, 6:05 PM CDT for Benton County, Arkansas. It was in force for 28 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, 6:05 PM CDT (23:05 UTC)
Expired: Apr 30, 2019, 6:33 PM CDT
In force: 28 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Benton County, AR

The radar

The Springfield radar (KSGF), 115 km from the middle of the area, began a volume at 23:08 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.

Issued	Product	Office	Lasted
Apr 30, 12:02 PM CDT	Tornado Watch	SPC	13 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.1 hours before the alert went out and 66 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

574 
WUUS54 KTSA 302305
SVRTSA
ARC007-302345-
/O.NEW.KTSA.SV.W.0050.190430T2305Z-190430T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
605 PM CDT Tue Apr 30 2019

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northeastern Benton County in northwestern Arkansas...

* Until 645 PM CDT.

* At 605 PM CDT, a severe thunderstorm was located over Rogers,
  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 in or near the path include...
  Springdale...                     Rogers...
  Bentonville...                    Bella Vista...
  Lowell...                         Pea Ridge...
  Bethel Heights...                 Cave Springs...
  Garfield...                       Gateway...
  Avoca...                          Hill Top...
  Walnut Hill...                    Monte Ne...

This includes Interstate 49 between mile markers 75 and 91.
 
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.

&&

A Tornado Watch remains in effect until 1100 PM CDT for northwestern
Arkansas.

LAT...LON 3621 9411 3623 9427 3650 9420 3650 9387
      3644 9387
TIME...MOT...LOC 2305Z 217DEG 36KT 3632 9413 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

1 follow-up statement

031 
WWUS54 KTSA 302333
SVSTSA

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

ARC007-302343-
/O.CAN.KTSA.SV.W.0050.000000T0000Z-190430T2345Z/
Benton AR-
633 PM CDT Tue Apr 30 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BENTON COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CDT for northwestern
Arkansas.

LAT...LON 3621 9411 3623 9427 3650 9420 3650 9387
      3644 9387
TIME...MOT...LOC 2330Z 217DEG 36KT 3654 9392 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 9:34 AM CDT	River Flood Advisory	TSA	Crawford, Franklin	18 hr
Apr 30, 1:08 PM CDT	Tornado Warning	TSA	Madison	30 min
Apr 30, 1:27 PM CDT	Tornado Warning	TSA	Madison	20 min
Apr 30, 3:11 PM CDT	Tornado Warning	TSA	Washington	49 min
Apr 30, 3:51 PM CDT	Tornado Warning	TSA	Benton	39 min
Apr 30, 3:58 PM CDT	Tornado Warning	TSA	Benton, Washington	47 min
Apr 30, 4:07 PM CDT	Tornado Warning	TSA	Carroll	26 min
Apr 30, 4:25 PM CDT	Areal Flood Advisory	TSA	Benton, Washington	3 hr
Apr 30, 4:40 PM CDT	Tornado Warning	TSA	Benton, Carroll	50 min
Apr 30, 5:18 PM CDT	Special Weather Statement	TSA	Crawford	27 min
Apr 30, 5:36 PM CDT	Tornado Warning	TSA	Benton, Washington	39 min
Apr 30, 6:19 PM CDT	Special Weather Statement	TSA	Washington	26 min
Apr 30, 6:47 PM CDT	Special Weather Statement	TSA	Madison	43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2019 Every severe thunderstorm warning 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.