Alert archive / Arkansas / Flash Flood Warnings in 2014

Flash Flood Warning 22, NWS Little Rock, AR

June 12, 2014Calhoun County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Jun 12, 2014, 8:30 PM CDT for Calhoun County, Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 12, 2014, 8:30 PM CDT (01:30 UTC)
Expired: Jun 12, 2014, 11:30 PM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

County Calhoun County, AR

The radar

The Little Rock radar (KLZK), 144 km from the middle of the area, began a volume at 01:31 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

Little Rock, AR (KBYH), launched 00:00Z, 1.5 hours before the alert went out and 274 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: 650 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1444 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 12, 2:15 PM CDT, 6 hours 15 minutes earlier.

Area forecast discussion, Jun 12, 2:15 PM CDT, 6 hours 15 minutes before

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Hazardous weather outlook, Jun 12, 5:00 AM CDT, 15 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT THU JUN 12 2014

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-131000-
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-
500 AM CDT THU JUN 12 2014

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

.DAY ONE...TODAY AND TONIGHT

CLOUDS WILL INCREASE THIS MORNING. CHANCES FOR SHOWERS AND
THUNDERSTORMS WILL INCREASE ACROSS THE STATE...FIRST IN THE WEST
THEN SPREADING EASTWARD. RAIN CHANCES WILL BECOME LIKELY BY THIS
AFTERNOON...AND WILL CONTINUE INTO TONIGHT. THERE IS A SLIGHT RISK
OF SEVERE THUNDERSTORMS TODAY IN CENTRAL AND SOUTH SECTIONS WITH
DAMAGING WINDS AND LARGE HAIL THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SHOWERS AND THUNDERSTORMS WILL BE ENDING FRIDAY MORNING AS THE
COMPLEX OF THUNDERSTORMS MOVES OUT OF THE AREA. THERE WILL BE A
CHANCE OF MORE SHOWERS AND THUNDERSTORMS ACROSS NORTHWEST ARKANSAS
MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON AND EVENING.

&&

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

51

In the hours before

Special weather statement, Jun 12, 3:56 PM CDT, 4 hours 34 minutes before

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Special weather statement, Jun 12, 5:09 PM CDT, 3 hours 21 minutes before

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Special weather statement, Jun 12, 5:18 PM CDT, 3 hours 12 minutes before

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Local storm report, Jun 12, 5:34 PM CDT, 2 hours 56 minutes before

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Special weather statement, Jun 12, 6:16 PM CDT, 2 hours 14 minutes before

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Special weather statement, Jun 12, 6:35 PM CDT, 1 hour 55 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
Jun 12, 7:51 PM CDT	Severe Thunderstorm Warning	LZK	Bradley, Calhoun	39 min
Jun 12, 8:26 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Ouachita	49 min
Jun 12, 9:50 PM CDT	Special Weather Statement	LZK	Arkansas	45 min
Jun 12, 10:29 PM CDT	Special Weather Statement	LZK	Arkansas	46 min
Jun 13, 10:28 AM CDT	River Flood Warning	LZK	Bradley, Calhoun, Union	4 days

Nearby

Flash Flood Warnings in Arkansas, 2014 Every flash flood 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.