Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 43, NWS Tulsa, OK

April 19, 2011Carroll County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 19, 2011, 5:06 PM CDT for Carroll County, Arkansas. It was in force for 24 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 19, 2011, 5:06 PM CDT (22:06 UTC)
Expired
Apr 19, 2011, 5:30 PM CDT
In force
24 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Carroll County, AR

The radar

The Springfield radar (KSGF), 87 km from the middle of the area, began a volume at 22:06 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 19, 2:16 PM CDTTornado WatchSPC10 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.1 hours before the alert went out and 58 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 2011-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2616 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 2011-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 583 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
2616 J/kg
Mixed-layer CIN
-284 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
583 m²/s²
0-3 km storm-relative helicity
584 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

589 
WFUS54 KTSA 192206
TORTSA
ARC015-192230-
/O.NEW.KTSA.TO.W.0043.110419T2206Z-110419T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
506 PM CDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CARROLL COUNTY IN NORTHWEST ARKANSAS

* UNTIL 530 PM CDT

* AT 502 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR URBANETTE...MOVING NORTHEAST AT 35 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...OAK
  GROVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!

&&

LAT...LON 3638 9354 3649 9362 3651 9358 3650 9330
      3649 9329 3644 9329
TIME...MOT...LOC 2207Z 244DEG 33KT 3645 9346

$$
2 follow-up statements
769 
WWUS54 KTSA 192213
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
513 PM CDT TUE APR 19 2011

ARC015-192230-
/O.CON.KTSA.TO.W.0043.000000T0000Z-110419T2230Z/
CARROLL AR-
513 PM CDT TUE APR 19 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
NORTHEASTERN CARROLL COUNTY...

AT 511 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR OAK GROVE...
MOVING NORTHEAST AT 40 MPH.

THE WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!

&&

LAT...LON 3642 9343 3646 9349 3651 9348 3650 9330
      3649 9329 3644 9329
TIME...MOT...LOC 2214Z 244DEG 33KT 3648 9339

$$
333 
WWUS54 KTSA 192225
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
525 PM CDT TUE APR 19 2011

ARC015-192235-
/O.EXP.KTSA.TO.W.0043.000000T0000Z-110419T2230Z/
CARROLL AR-
525 PM CDT TUE APR 19 2011

...THE TORNADO WARNING FOR NORTHEASTERN CARROLL COUNTY EXPIRES AT 530
PM CDT...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
TORNADO WARNING WILL BE ALLOWED TO EXPIRE.

GUSTY WINDS...SMALL HAIL AND VERY HEAVY RAIN WILL STILL BE POSSIBLE
WITH THIS STORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM TONIGHT.

LAT...LON 3642 9343 3646 9349 3651 9348 3650 9330
      3649 9329 3644 9329
TIME...MOT...LOC 2225Z 244DEG 33KT 3652 9328

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 4:03 PM CDTSpecial Weather StatementTSABenton27 min
Apr 19, 4:09 PM CDTSevere Thunderstorm WarningTSABenton, Carroll66 min
Apr 19, 4:19 PM CDTSevere Thunderstorm WarningTSABenton, Madison, Washington56 min
Apr 19, 4:33 PM CDTSevere Thunderstorm WarningTSABenton, Carroll, Madison57 min
Apr 19, 5:01 PM CDTSevere Thunderstorm WarningTSABenton, Carroll, Madison, Washington59 min
Apr 19, 5:05 PM CDTTornado WarningTSACarroll, Madison, Washington25 min
Apr 19, 6:06 PM CDTSevere Thunderstorm WarningTSABenton, Madison, Washington24 min
Apr 19, 6:44 PM CDTSevere Thunderstorm WarningTSACarroll21 min

Nearby

Tornado Warnings in Arkansas, 2011Every tornado warning in 2011Tornadoes in 2011

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.