Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 53, NWS Tulsa, OK

April 15, 2012Benton County, Carroll County, Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 15, 2012, 1:19 PM CDT for Benton County, Carroll County, Washington County, Arkansas. It was in force for 26 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 15, 2012, 1:19 PM CDT (18:19 UTC)
Expired
Apr 15, 2012, 1:45 PM CDT
In force
26 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

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

The radar

The Western Arkansas radar (KSRX), 108 km from the middle of the area, began a volume at 18:19 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 15, 10:51 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.3 hours before the alert went out and 78 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 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 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
31 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
381 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

131 
WUUS54 KTSA 151819
SVRTSA
ARC007-015-143-151900-
/O.NEW.KTSA.SV.W.0053.120415T1819Z-120415T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
119 PM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN BENTON COUNTY IN NORTHWEST ARKANSAS
  NORTHWESTERN CARROLL COUNTY IN NORTHWEST ARKANSAS
  NORTHEASTERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 200 PM CDT

* AT 118 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  FAYETTEVILLE...MOVING NORTHEAST AT 60 MPH.

  STORM HAZARDS INCLUDE...
  PENNY SIZE HAIL...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  SPRINGDALE...LOWELL...ROGERS...WAR EAGLE...GARFIELD...GATEWAY AND
  BEAVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3604 9413 3608 9428 3650 9405 3650 9373
TIME...MOT...LOC 1819Z 209DEG 53KT 3609 9418

$$
3 follow-up statements
201 
WWUS54 KTSA 151830
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
130 PM CDT SUN APR 15 2012

ARC015-143-151840-
/O.CAN.KTSA.SV.W.0053.000000T0000Z-120415T1900Z/
CARROLL AR-WASHINGTON AR-
130 PM CDT SUN APR 15 2012

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

LAT...LON 3622 9408 3628 9416 3650 9405 3650 9387
      3649 9387
TIME...MOT...LOC 1830Z 205DEG 55KT 3627 9409

$$

ARC007-151900-
/O.CON.KTSA.SV.W.0053.000000T0000Z-120415T1900Z/
BENTON AR-
130 PM CDT SUN APR 15 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
EASTERN BENTON COUNTY...

AT 130 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MONTE NE...
MOVING NORTHEAST AT 65 MPH.

STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...MONTE
NE...ROGERS...AVOCA...WALNUT HILL...HILL TOP...GARFIELD AND GATEWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3622 9408 3628 9416 3650 9405 3650 9387
      3649 9387
TIME...MOT...LOC 1830Z 205DEG 55KT 3627 9409

$$
521 
WWUS54 KTSA 151841
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
141 PM CDT SUN APR 15 2012

ARC007-151900-
/O.CON.KTSA.SV.W.0053.000000T0000Z-120415T1900Z/
BENTON AR-
141 PM CDT SUN APR 15 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
NORTHEASTERN BENTON COUNTY...

AT 136 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HILL TOP...
MOVING NORTHEAST AT 70 MPH.

STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3637 9398 3639 9410 3650 9405 3650 9387
      3649 9387
TIME...MOT...LOC 1841Z 205DEG 62KT 3651 9397

$$
514 
WWUS54 KTSA 151845
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
145 PM CDT SUN APR 15 2012

ARC007-151855-
/O.CAN.KTSA.SV.W.0053.000000T0000Z-120415T1900Z/
BENTON AR-
145 PM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BENTON COUNTY IS
CANCELLED...

THE THUNDERSTORM HAS EXITED THE WARNED AREA. 

LAT...LON 3637 9398 3639 9410 3650 9405 3650 9387
      3649 9387
TIME...MOT...LOC 1845Z 203DEG 65KT 3657 9394

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 9:13 AM CDTSevere Thunderstorm WarningTSABenton, Washington62 min
Apr 15, 9:42 AM CDTTornado WarningTSABenton, Washington33 min
Apr 15, 10:13 AM CDTSevere Thunderstorm WarningTSABenton, Carroll, Washington24 min
Apr 15, 11:28 AM CDTSpecial Weather StatementTSASebastian62 min
Apr 15, 12:25 PM CDTSevere Thunderstorm WarningTSABenton, Madison, Washington35 min
Apr 15, 12:29 PM CDTSpecial Weather StatementTSACrawford31 min
Apr 15, 1:04 PM CDTSpecial Weather StatementTSACarroll26 min
Apr 15, 1:14 PM CDTSpecial Weather StatementTSAWashington31 min
Apr 15, 1:48 PM CDTSpecial Weather StatementTSAFranklin27 min
Apr 15, 1:53 PM CDTSpecial Weather StatementTSACarroll, Madison52 min
Apr 15, 2:10 PM CDTSpecial Weather StatementTSAFranklin35 min
Apr 15, 2:32 PM CDTSpecial Weather StatementTSACarroll, Madison43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2012Every severe thunderstorm warning in 2012

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.