Alert archive / Arkansas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 334, NWS Little Rock, AR

September 17, 2014Logan County, Scott County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Sep 17, 2014, 8:49 PM CDT for Logan County, Scott County, Arkansas. It was in force for 41 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
Sep 17, 2014, 8:49 PM CDT (01:49 UTC)
Expired
Sep 17, 2014, 9:30 PM CDT
In force
41 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

Counties Logan County, AR, Scott County, AR

The radar

The Western Arkansas radar (KSRX), 51 km from the middle of the area, began a volume at 01:48 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, 1.8 hours before the alert went out and 207 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 00:00Z on 2014-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 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 00:00Z on 2014-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
239 J/kg
Mixed-layer CIN
-239 J/kg
Mixed-layer LCL
1251 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

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 Sep 17, 6:47 PM CDT, 2 hours 2 minutes earlier.

Area forecast discussion, Sep 17, 6:47 PM CDT, 2 hours 2 minutes before
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Hazardous weather outlook, Sep 17, 7:41 AM CDT, 13 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
741 AM CDT WED SEP 17 2014

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-181245-
ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-
CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-
INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE-
MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE-
PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE-
WOODRUFF-YELL-
741 AM CDT WED SEP 17 2014

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

.DAY ONE...TODAY AND TONIGHT

PATCHY FOG WILL BE NOTED ACROSS THE AREA EARLY THIS MORNING. THE FOG
WILL BE LOCALLY DENSE IN SPOTS...ESPECIALLY IN NORTHERN SECTIONS OF
THE STATE.

SCATTERED SHOWERS AND THUNDERSTORMS WILL EVENTUALLY MOVE INTO PARTS
OF NORTHERN ARKANSAS LATER THIS MORNING. WHILE A FEW STORMS COULD
PRODUCE HAIL UP TO PENNY SIZE...ORGANIZED SEVERE WEATHER IS NOT
EXPECTED.

THUNDERSTORMS ARE LIKELY TO REDEVELOP LATE THIS AFTERNOON AND
CONTINUE THROUGH THE EVENING HOURS. A FEW OF THESE STORMS COULD
BE STRONG AND PRODUCE HEAVY RAIN AND GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SCATTERED THUNDERSTORMS ARE EXPECTED AGAIN ON THURSDAY...ESPECIALLY
OVER THE SOUTHWESTERN HALF OF THE STATE.

AFTER DRY AND WARM WEATHER FRIDAY INTO THE FIRST PART OF THE
WEEKEND...A COLD FRONT WILL SWEEP INTO ARKANSAS SATURDAY NIGHT AND
SUNDAY. THERE ARE GOOD CHANCES FOR THUNDERSTORMS WITH THE FRONT.

DATA IS SHOWING THE REMNANTS OF HURRICANE ODILE...FROM THE PACIFIC
OCEAN...MOVING INTO THE MIDDLE PART OF THE COUNTRY AND INTERACTING
WITH THE FRONT. THIS WOULD ADD MOISTURE TO THE ENVIRONMENT...AND
COULD RESULT IN HEAVY RAINFALL WHEN THE FRONT CROSSES THE STATE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND
CLICK ON CENTRAL ARKANSAS.

In the hours before

Local storm report, Sep 17, 3:21 PM CDT, 5 hours 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
321 PM CDT WED SEP 17 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     HAIL             HARRISON                36.24N 93.12W
09/17/2014  E1.00 INCH       BOONE              AR   CO-OP OBSERVER

            QUARTER SIZED HAIL FELL FOR ABOUT 10 MINUTES.

&&

57
Local storm report, Sep 17, 3:23 PM CDT, 5 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
323 PM CDT WED SEP 17 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     HAIL             HARRISON                36.24N 93.12W
09/17/2014  M1.00 INCH       BOONE              AR   NWS EMPLOYEE

0315 PM     HAIL             HARRISON                36.24N 93.12W
09/17/2014  E1.25 INCH       BOONE              AR   BROADCAST MEDIA

&&

58
Local storm report, Sep 17, 4:07 PM CDT, 4 hours 42 minutes before
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Local storm report, Sep 17, 4:13 PM CDT, 4 hours 36 minutes before
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Local storm report, Sep 17, 4:14 PM CDT, 4 hours 35 minutes before
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Local storm report, Sep 17, 4:29 PM CDT, 4 hours 20 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 17, 9:28 PM CDTSpecial Weather StatementLZKScott47 min
Sep 17, 9:41 PM CDTSpecial Weather StatementLZKScott29 min
Sep 17, 9:55 PM CDTSpecial Weather StatementLZKScott25 min
Sep 17, 10:04 PM CDTSevere Thunderstorm WarningLZKPolk, Scott41 min
Sep 18, 3:40 AM CDTDense Fog AdvisoryLZKBaxter, Fulton, Marion5 hr
Sep 18, 1:14 PM CDTSpecial Weather StatementLZKCleveland31 min
Sep 18, 1:52 PM CDTSpecial Weather StatementLZKDesha28 min
Sep 18, 2:35 PM CDTSpecial Weather StatementLZKArkansas30 min
Sep 18, 2:55 PM CDTSpecial Weather StatementLZKDesha30 min
Sep 18, 4:47 PM CDTFlash Flood WarningLZKArkansas, Jefferson, Lincoln2 hr

Nearby

Severe Thunderstorm Warnings in Arkansas, 2014Every severe thunderstorm warning in 2014

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.