Alert archive / Arkansas / Flash Flood Warnings in 2015

Flash Flood Warning 30, NWS Little Rock, AR

May 17, 20158 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at May 17, 2015, 3:21 AM CDT for 8 counties in Arkansas. It was in force for 5 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
May 17, 2015, 3:21 AM CDT (08:21 UTC)
Expired
May 17, 2015, 8:30 AM CDT
In force
5 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Boone County, AR, Johnson County, AR, Logan County, AR, Marion County, AR, Newton County, AR, Polk County, AR, Scott County, AR, Searcy County, AR

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 8.4 hours before the alert went out and 153 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 2015-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1727 joules per kilogram.LCLEL10008507005003002001001 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 2015-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.193958Sfc1 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
1727 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1056 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
1.4
Supercell composite
11.8

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 May 16, 6:41 PM CDT, 8 hours 40 minutes earlier.

Area forecast discussion, May 16, 6:41 PM CDT, 8 hours 40 minutes before
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Hazardous weather outlook, May 16, 2:20 PM CDT, 13 hours 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
220 PM CDT SAT MAY 16 2015

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-171000-
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-
220 PM CDT SAT MAY 16 2015

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE EARLY
EVENING. BRIEF HEAVY DOWNPOURS WILL BE POSSIBLE WITH THE STRONGER
STORMS.

LATER TONIGHT...A COLD FRONT WILL APPROACH FROM THE PLAINS.
AHEAD OF THE FRONT...A CLUSTER OF THUNDERSTORMS IS EXPECTED TO
BUILD INTO WESTERN ARKANSAS FROM OKLAHOMA. STORMS WILL WEAKEN
SOMEWHAT AS THEY ARRIVE...SO ANY SEVERE WEATHER SHOULD BE ISOLATED.
ONE TO TWO INCH RAINFALL AMOUNTS WILL BE POSSIBLE IN THE FAR
WEST...AND THIS MAY BE HEAVY ENOUGH TO CAUSE LOCALIZED FLASH
FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE AFOREMENTIONED FRONT WILL SLOW DOWN ON SUNDAY...AND WILL DRIFT
THROUGH THE REGION ON MONDAY. SURROUNDING THE FRONT...PRECIPITATION
SHOULD BECOME MORE WIDESPREAD WITH AREAS OF HEAVY RAIN. GIVEN A
NEARLY SATURATED GROUND...SOME FLASH FLOODING IS POSSIBLE. THE MOST
LIKELY AREA FOR HIGH WATER PROBLEMS IS THE WESTERN HALF OF THE
STATE. THERE WILL BE A WINDOW...IN THE LATE AFTERNOON AND
EVENING...FOR SEVERE STORMS...WITH DAMAGING WIND GUSTS.

RIVERS MAY GO UP IN PARTS OF THE REGION DEPENDING ON HOW MUCH
RAIN ACTUALLY FALLS. THIS WILL BE MONITORED CLOSELY.

THE FRONT WILL MAKE IT TO THE GULF COAST ON TUESDAY BEFORE
STALLING. SHOWERS WILL BE SPOTTY GIVEN DRIER AIR BEHIND THE
FRONT. A SOUTHWEST WIND ALOFT WILL DRIVE STORM SYSTEMS TOWARD THE
STATE WEDNESDAY THROUGH FRIDAY...AND THE SYSTEMS WILL INTERACT WITH
THE STALLED FRONT. THIS WILL RESULT IN MORE HIT AND MISS
PRECIPITATION.

.SPOTTER INFORMATION STATEMENT...

ISOLATED SPOTTER ACTIVATION MAY BE NEEDED THROUGH SUNDAY.

&&

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

55

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 7:02 PM CDTSpecial Weather StatementLZKWhite28 min
May 16, 7:27 PM CDTFlash Flood WarningLZKWhite2 hr
May 17, 2:23 AM CDTFlash Flood WatchLZKBaxter, Calhoun, Clark, Cleburne, Cleveland, Conway and 20 more32 hr
May 17, 2:28 AM CDTSpecial Weather StatementLZKBoone, Newton57 min
May 17, 3:29 AM CDTFlash Flood WarningLZKPolk, Scott5 hr
May 17, 3:54 AM CDTSpecial Weather StatementLZKJohnson, Logan46 min
May 17, 4:38 AM CDTSpecial Weather StatementLZKJohnson, Pope32 min
May 17, 4:46 AM CDTSevere Thunderstorm WarningLZKJohnson, Newton, Pope, Searcy44 min
May 17, 5:07 AM CDTSpecial Weather StatementLZKYell28 min
May 17, 5:32 AM CDTFlash Flood WarningLZKJohnson, Logan, Montgomery, Newton, Polk, Pope and 3 more3 hr
May 17, 7:01 AM CDTSpecial Weather StatementLZKFaulkner29 min
May 17, 7:38 AM CDTSpecial Weather StatementLZKFaulkner, Pulaski, Saline47 min
May 17, 8:31 AM CDTFlash Flood WarningLZKBaxter, Boone, Johnson, Logan, Marion, Montgomery and 6 more3 hr
May 17, 8:37 AM CDTRiver Flood WarningLZKRandolph6 days
May 17, 8:53 AM CDTRiver Flood WarningLZKPrairie11 days
May 17, 3:12 PM CDTRiver Flood WarningLZKYell70 hr
May 17, 5:32 PM CDTSpecial Weather StatementLZKWoodruff23 min
May 17, 5:43 PM CDTSevere Thunderstorm WarningLZKMonroe, Woodruff47 min
May 17, 6:20 PM CDTSpecial Weather StatementLZKMonroe25 min
May 17, 6:48 PM CDTSpecial Weather StatementLZKArkansas27 min

Nearby

Flash Flood Warnings in Arkansas, 2015Every flash flood 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.