Alert archive / Arkansas / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

October 19, 2016Benton County, Arkansas

NWS Tulsa, OK issued this special weather statement at Oct 19, 2016, 7:21 PM CDT for Benton 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: Oct 19, 2016, 7:21 PM CDT (00:21 UTC)
Expired: Oct 19, 2016, 8:00 PM CDT
In force: 39 min
Issued by: NWS Tulsa, OK

County Benton County, AR

The radar

The Springfield radar (KSGF), 114 km from the middle of the area, began a volume at 00:24 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.4 hours before the alert went out and 67 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: 1368 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted.

621 
WWUS84 KTSA 200021
SPSTSA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
721 PM CDT WED OCT 19 2016
 
ARZ001-200100-
BENTON AR-
721 PM CDT WED OCT 19 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BENTON COUNTY UNTIL
800 PM CDT...

AT 721 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR CAVE
SPRINGS... MOVING EAST AT 30 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
SPRINGDALE...                     ROGERS...
BENTONVILLE...                    LOWELL...
BETHEL HEIGHTS...                 CAVE SPRINGS...
HIGHFILL...                       WAR EAGLE...
HOBBS STATE PARK...               CENTERTON...
AVOCA...                          LARUE...
BLAND...                          WALNUT HILL...
HEALING SPRINGS...                VAUGHN...
MONTE NE...                       BEAVER LAKE...
LOOKOUT...                        ROCKY COMFORT...

THIS INCLUDES INTERSTATE 49 BETWEEN MILE MARKERS 75 AND 84...AND
BETWEEN MILE MARKERS 86 AND 87.
 
LAT...LON 3623 9387 3624 9401 3622 9401 3621 9428
      3622 9431 3633 9432 3648 9387 3639 9387
      3639 9388 3638 9389 3637 9388 3637 9387
      3634 9387 3634 9386
TIME...MOT...LOC 0021Z 257DEG 28KT 3628 9428 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 19, 7:07 PM CDT	Special Weather Statement	TSA	Adair	53 min
Oct 19, 7:23 PM CDT	Special Weather Statement	TSA	Okfuskee	37 min
Oct 19, 9:58 PM CDT	Special Weather Statement	TSA	Pittsburg	47 min
Oct 19, 10:43 PM CDT	Special Weather Statement	TSA	Delaware	32 min
Oct 19, 11:10 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	24 min
Oct 19, 11:33 PM CDT	Special Weather Statement	TSA	Washington	27 min
Oct 19, 11:58 PM CDT	Special Weather Statement	TSA	Benton	32 min

Nearby

Special Weather Statements in Arkansas, 2016 Every special weather statement in 2016

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.