Alert archive / Arkansas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 301, NWS Little Rock, AR

October 12, 2016Searcy County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Oct 12, 2016, 5:29 PM CDT for Searcy County, Arkansas. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 12, 2016, 5:29 PM CDT (22:29 UTC)
Expired
Oct 12, 2016, 5:54 PM CDT
In force
25 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
2.5 in
Wind
60.0 mph

County Searcy County, AR

The radar

The Little Rock radar (KLZK), 126 km from the middle of the area, began a volume at 22:30 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 12:00Z, 10.5 hours before the alert went out and 148 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 2016-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 514 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2016-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
514 J/kg
Mixed-layer CIN
-142 J/kg
Mixed-layer LCL
919 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 12, 2:55 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Oct 12, 2:55 PM CDT, 2 hours 34 minutes before
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Hazardous weather outlook, Oct 12, 5:15 PM CDT, 14 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE LITTLE ROCK AR
515 PM CDT WED OCT 12 2016

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-131000-
BOONE-MARION-BAXTER-FULTON-SHARP-NEWTON-SEARCY-STONE-IZARD-
INDEPENDENCE-JOHNSON-POPE-VAN BUREN-CLEBURNE-JACKSON-LOGAN-CONWAY-
FAULKNER-WHITE-WOODRUFF-SCOTT-YELL-PERRY-POLK-MONTGOMERY-GARLAND-
SALINE-PULASKI-LONOKE-PRAIRIE-MONROE-PIKE-CLARK-HOT SPRING-GRANT-
JEFFERSON-ARKANSAS-DALLAS-CLEVELAND-LINCOLN-DESHA-OUACHITA-
CALHOUN-BRADLEY-DREW-
515 PM CDT WED OCT 12 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...THIS EVENING AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE...PRIMARILY
THIS EVENING AND TONIGHT...AS A COLD FRONT MOVES INTO ARKANSAS. THE
STORMS WILL START OVER NORTHERN ARKANSAS, THEN SLOWLY MOVE
SOUTHWARD. A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE, WITH THE
MAIN THREATS BEING LARGE HAIL AND DAMAGING WINDS. AFTER SUNSET, THE
OVERALL SEVERE STORM THREAT WILL LOWER.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THURSDAY AND
FRIDAY. AGAIN...WHILE AN ISOLATED STORM OR TWO COULD BRIEFLY
BECOME STRONG...THE THREAT OF SEVERE THUNDERSTORMS WILL BE LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV/LZK.

57/64/59

In the hours before

Special weather statement, Oct 12, 5:29 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
529 PM CDT WED OCT 12 2016

ARZ003-012-122300-
BOONE AR-NEWTON AR-
529 PM CDT WED OCT 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL NEWTON AND SOUTHERN
BOONE COUNTIES UNTIL 600 PM CDT...

AT 527 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
RED BANK...OR 8 MILES WEST OF HARRISON...MOVING EAST AT 40 MPH.

PEA TO HALF INCH HAIL AND WINDS IN EXCESS OF 45 MPH WILL BE POSSIBLE
WITH THIS STORM. HEAVY RAIN AND DANGEROUS LIGHTNING WILL ALSO BE
SEEN. THE HEAVY RAIN COULD CAUSE PONDING OF WATER ON ROADWAYS AND IN
LOW LYING AREAS.

LOCATIONS IMPACTED INCLUDE...
HARRISON...                       BERGMAN...
VALLEY SPRINGS...                 CAPPS...
PRUITT...                         RED BANK...
ERBIE...                          OLVEY...
BELLEFONTE...                     ALPENA...
ZINC...                           BATAVIA...
BEAR CREEK SPRINGS...             RIDGEWAY...
COMPTON...                        MARBLE FALLS...
GAITHER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3629 9289 3621 9289 3603 9308 3608 9343
      3613 9340 3612 9330 3631 9330 3635 9328
TIME...MOT...LOC 2227Z 274DEG 50KT 3622 9327

59

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 12, 4:19 PM CDTSevere Thunderstorm WarningLZKBoone, Newton26 min
Oct 12, 4:43 PM CDTSevere Thunderstorm WarningLZKNewton, Searcy47 min
Oct 12, 5:29 PM CDTSpecial Weather StatementLZKBoone31 min
Oct 12, 5:57 PM CDTSpecial Weather StatementLZKNewton33 min
Oct 12, 6:38 PM CDTSpecial Weather StatementLZKSearcy52 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2016Every severe thunderstorm warning 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.