Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 52, NWS Tulsa, OK

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

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 15, 2012, 12:25 PM CDT for Benton County, Madison County, Washington County, Arkansas. It was in force for 35 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, 12:25 PM CDT (17:25 UTC)
Expired: Apr 15, 2012, 1:00 PM CDT
In force: 35 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

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

The radar

The Western Arkansas radar (KSRX), 102 km from the middle of the area, began a volume at 17:28 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 15, 10:51 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 5.4 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-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: 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.

519 
WUUS54 KTSA 151725
SVRTSA
ARC007-087-143-151800-
/O.NEW.KTSA.SV.W.0052.120415T1725Z-120415T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1225 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 MADISON COUNTY IN NORTHWEST ARKANSAS
  EASTERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 100 PM CDT

* AT 1223 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 4 MILES NORTH OF FARMINGTON TO 3 MILES SOUTHWEST OF
  DEVILS DEN STATE PARK...MOVING NORTHEAST AT 40 MPH.

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

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...DEVILS
  DEN STATE PARK...TONTITOWN...BLACKBURN...WEST FORK...GREENLAND...
  FAYETTEVILLE...WINSLOW...SPRINGDALE...LOWELL...BRENTWOOD...
  ELKINS...WITHROW SPRINGS STATE PARK...HOBBS STATE PARK...CLIFTY...
  FORUM...HINDSVILLE...WESLEY...HUNTSVILLE AND WAR EAGLE.

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 3610 9367 3575 9418 3576 9433 3621 9427
      3639 9389 3634 9387 3631 9381 3630 9366
TIME...MOT...LOC 1725Z 229DEG 31KT 3612 9425 3577 9427

$$

2 follow-up statements

514 
WWUS54 KTSA 151744
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1244 PM CDT SUN APR 15 2012

ARC007-087-143-151800-
/O.CON.KTSA.SV.W.0052.000000T0000Z-120415T1800Z/
BENTON AR-MADISON AR-WASHINGTON AR-
1244 PM CDT SUN APR 15 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT FOR
NORTHEASTERN WASHINGTON...NORTHWESTERN MADISON AND EASTERN BENTON
COUNTIES...

AT 1242 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MONTE NE TO GOSHEN...MOVING NORTHEAST AT 45 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...GOSHEN...
MAYFIELD...LARUE...WAR EAGLE...BLAND...HINDSVILLE...HOBBS STATE
PARK...LOOKOUT...ROCKHOUSE...CLIFTY AND BEST.

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 3610 9384 3600 9413 3629 9411 3639 9389
      3634 9387 3631 9381 3630 9367
TIME...MOT...LOC 1744Z 226DEG 40KT 3628 9405 3608 9404

$$

838 
WWUS54 KTSA 151759
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1259 PM CDT SUN APR 15 2012

ARC007-087-143-151808-
/O.EXP.KTSA.SV.W.0052.000000T0000Z-120415T1800Z/
BENTON AR-MADISON AR-WASHINGTON AR-
1259 PM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON...
NORTHWESTERN MADISON AND EASTERN BENTON COUNTIES EXPIRES AT 100 PM
CDT...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE 
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. 

GUSTY WINDS...SMALL HAIL AND HEAVY RAIN WILL STILL BE POSSIBLE WITH 
THIS STORM. THE STORMS ARE MOVING NORTHEAST INTO WESTERN CARROLL 
COUNTYAND FAR NORTHWEST MADISON COUNTY AT ABOUT 45 MPH. 

A TORNADO WATCH REMAINS IN EFFECT UNTIL 6 PM. 

LAT...LON 3610 9384 3600 9413 3629 9411 3639 9389
      3634 9387 3631 9381 3630 9367
TIME...MOT...LOC 1758Z 226DEG 40KT 3639 9391 3619 9390

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 9:13 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	62 min
Apr 15, 9:42 AM CDT	Tornado Warning	TSA	Benton, Washington	33 min
Apr 15, 10:13 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Washington	24 min
Apr 15, 11:28 AM CDT	Special Weather Statement	TSA	Sebastian	62 min
Apr 15, 12:29 PM CDT	Special Weather Statement	TSA	Crawford	31 min
Apr 15, 1:04 PM CDT	Special Weather Statement	TSA	Carroll	26 min
Apr 15, 1:14 PM CDT	Special Weather Statement	TSA	Washington	31 min
Apr 15, 1:19 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Washington	26 min
Apr 15, 1:48 PM CDT	Special Weather Statement	TSA	Franklin	27 min
Apr 15, 1:53 PM CDT	Special Weather Statement	TSA	Carroll, Madison	52 min
Apr 15, 2:10 PM CDT	Special Weather Statement	TSA	Franklin	35 min
Apr 15, 2:32 PM CDT	Special Weather Statement	TSA	Carroll, Madison	43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2012 Every 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.