Alert archive / Arkansas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 45, NWS Little Rock, AR

April 1, 2015Johnson County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 1, 2015, 5:49 PM CDT for Johnson County, Arkansas. It was in force for 26 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: Apr 1, 2015, 5:49 PM CDT (22:49 UTC)
Expired: Apr 1, 2015, 6:15 PM CDT
In force: 26 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Johnson County, AR

The radar

The Western Arkansas radar (KSRX), 87 km from the middle of the area, began a volume at 22:53 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, 10.8 hours before the alert went out and 151 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1257 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Apr 1, 3:25 PM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Apr 1, 3:25 PM CDT, 2 hours 24 minutes before

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Hazardous weather outlook, Apr 1, 1:35 PM CDT, 4 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
135 PM CDT WED APR 1 2015

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-021000-
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-
135 PM CDT WED APR 1 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON INTO THE
OVERNIGHT HOURS. ISOLATED THUNDERSTORMS WILL HAVE THE POTENTIAL TO
BECOME SEVERE...WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY
CONCERNS. THERE IS THE POTENTIAL FOR HEAVY RAINFALL WITH ANY
STORM...WITH LOCALIZED FLOODING POSSIBLE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

UNSETTLED WEATHER WILL CONTINUE ACROSS ARKANSAS ON THURSDAY AND
FRIDAY...BEFORE A COLD FRONT FINALLY MAKES ITS WAY THROUGH THE
STATE FRIDAY EVENING.

BEFORE THEN...SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THURSDAY
AND AGAIN ON FRIDAY. LARGE HAIL WILL BE THE PRIMARY THREAT WITH
ANY SEVERE STORMS. DAMAGING WINDS WILL BE A POSSIBILITY AS WELL.
ADDITIONALLY THERE WILL BE A TORNADO RISK...WHICH WILL BE HIGHEST
AHEAD OF THE FRONT ON THURSDAY.

THURSDAY...THE THREAT FOR SEVERE WEATHER WILL BE GREATEST DURING
THE EARLY EVENING HOURS...MAINLY ACROSS WESTERN AND NORTHWEST
ARKANSAS. ON FRIDAY...THE BEST CHANCES FOR SEVERE WEATHER WILL BE
ACROSS THE SOUTHEAST HALF OF THE STATE.

THOUGH HEAVY RAINFALL IS NOT EXPECTED TO BE WIDESPREAD...STRONGER
STORMS WILL BE CAPABLE OF PRODUCING LOCALIZED HEAVY RAINFALL IN A
SHORT AMOUNT OF TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

&&

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

In the hours before

Local storm report, Apr 1, 2:00 PM CDT, 3 hours 49 minutes before

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Special weather statement, Apr 1, 2:53 PM CDT, 2 hours 56 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 7:18 PM CDT	Special Weather Statement	LZK	Van Buren	32 min
Mar 31, 7:29 PM CDT	Severe Thunderstorm Warning	LZK	Conway, Faulkner, Van Buren	31 min
Mar 31, 7:58 PM CDT	Special Weather Statement	LZK	Faulkner	32 min
Mar 31, 8:02 PM CDT	Special Weather Statement	LZK	Faulkner	28 min
Mar 31, 8:10 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner	20 min
Mar 31, 8:30 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner	45 min
Mar 31, 8:37 PM CDT	Special Weather Statement	LZK	White	28 min
Mar 31, 8:54 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, White	36 min
Mar 31, 9:24 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski	36 min
Mar 31, 9:42 PM CDT	Special Weather Statement	LZK	Jackson	33 min
Mar 31, 9:47 PM CDT	Severe Thunderstorm Warning	LZK	Jackson	28 min
Mar 31, 10:08 PM CDT	Special Weather Statement	LZK	Jackson	32 min
Apr 1, 11:14 AM CDT	Special Weather Statement	LZK	Johnson	46 min
Apr 1, 2:53 PM CDT	Special Weather Statement	LZK	Sharp	42 min
Apr 1, 4:09 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Sharp	51 min
Apr 1, 4:34 PM CDT	Severe Thunderstorm Warning	LZK	Sharp	26 min
Apr 1, 4:59 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk	46 min
Apr 1, 5:45 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery	45 min
Apr 1, 6:34 PM CDT	Severe Thunderstorm Warning	LZK	Polk	26 min
Apr 1, 6:40 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Saline	27 min
Apr 1, 6:46 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Saline, Yell	29 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2015 Every severe thunderstorm warning in 2015

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.