Alert archive / Arkansas / Flash Flood Warnings in 2015

Flash Flood Warning 24, NWS Little Rock, AR

May 11, 20158 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at May 11, 2015, 3:06 AM CDT for 8 counties in 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: May 11, 2015, 3:06 AM CDT (08:06 UTC)
Expired: May 11, 2015, 6:00 AM CDT
In force: 3 hr
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Flood severity: None

Counties Clark County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Perry County, AR, Pulaski County, AR, Saline County, AR

The radar

The Little Rock radar (KLZK), 52 km from the middle of the area, began a volume at 08:09 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

Shreveport, LA (KBAD), launched 00:00Z, 8.1 hours before the alert went out and 253 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: 482 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1448 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 5.7

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 11, 12:42 AM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, May 11, 12:42 AM CDT, 2 hours 24 minutes before

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Hazardous weather outlook, May 10, 7:40 PM CDT, 7 hours 26 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
740 PM CDT SUN MAY 10 2015

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-111000-
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-
740 PM CDT SUN MAY 10 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED SHOWERS AD THUNDERSTORM PERSIST THROUGH THE OVERNIGHT
HOURS WITH SOME OF THE STORMS PRODUCING BRIEF HEAVY RAIN. SOME OF
THE STORMS COULD BE STRONG WITH WINDS AND EVEN SOME HAIL POSSIBLE
WITH THE STRONGEST ONES. FLASH FLOODING WILL REMAIN A CONCERN...
ESPECIALLY OVER THE WEST AND NORTHWEST. AN ISOLATED TORNADO CAN NOT
BE RULED OUT AS WELL AND A TORNADO WATCH IS IN EFFECT FOR PARTS OF
SOUTH CENTRAL AND SOUTHWEST ARKANSAS UNTIL MIDNIGHT.

AN ADDITIONAL ROUND OF HEAVY RAINFALL WILL BE LIKELY THIS EVENING AS
A LARGE AREA OF PRECIPITATION LIFTS OUT OF OKLAHOMA. MANY OF THE
LOCATIONS THAT HAVE ALREADY SEEN VERY HEAVY RAINFALL OVER THE PAST
COUPLE DAYS COULD SEE EVEN MORE HEAVY RAIN THROUGH TONIGHT.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES WILL BE POSSIBLE
THROUGH TONIGHT...ESPECIALLY ACROSS WESTERN AND NORTHWEST SECTIONS
OF THE AREA. AS A RESULT...FLASH FLOODING WILL BE A SIGNIFICANT
THREAT GIVEN SOME OF THESE AREAS HAVE ALREADY SEEN OVER 5 TO 8
INCHES OF RAINFALL RECENTLY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A COLD FRONT WILL BE MOVING THROUGH ARKANSAS MONDAY...WITH MORE
SHOWERS AND THUNDERSTORMS EXPECTED ALONG AND AHEAD OF THE FRONT.
ONE QUARTER TO THREE QUARTERS OF AN INCH OF RAIN IS EXPECTED IN
THE EASTERN HALF OF THE STATE MONDAY. HOWEVER...LOCALLY HIGHER
AMOUNTS WILL BE POSSIBLE.

WITH THE FRONT EXPECTED TO PUSH PAST THE STATE BY MONDAY
NIGHT...WITH THE BULK OF THE PRECIPITATION DROPPING SOUTH AND EAST
OF THE STATE FOR TUESDAY AND WEDNESDAY. SOME SMALL CHANCES FOR
RAIN WILL CONTINUE TOWARD THE LOUISIANA BORDER.

A STORM SYSTEM WILL APPROACH FROM THE SOUTHWEST THURSDAY AND
FRIDAY...AND THIS WILL BRING MOISTURE BACK TO THE NORTH. CHANCES
FOR RAIN WILL RETURN TO MUCH OF THE AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THROUGH TONIGHT.

&&

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

51/62

In the hours before

Special weather statement, May 10, 9:37 PM CDT, 5 hours 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
937 PM CDT SUN MAY 10 2015

ARZ037-040-041-110305-
MONTGOMERY AR-POLK AR-SCOTT AR-
937 PM CDT SUN MAY 10 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN SCOTT...NORTHEASTERN
POLK AND WESTERN MONTGOMERY COUNTIES UNTIL 1000 PM CDT...

AT 932 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 2 MILES SOUTHWEST OF OPAL...OR 13 MILES EAST OF
MENA...MOVING NORTHEAST AT 25 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  OPAL...               PINE RIDGE...         CHERRY HILL...
  BIG FORK...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 3479 9402 3468 9375 3443 9398 3449 9411
TIME...MOT...LOC 0237Z 206DEG 21KT 3455 9401

64

Local storm report, May 10, 9:46 PM CDT, 5 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
946 PM CDT SUN MAY 10 2015

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

0940 PM     FLASH FLOOD      CHERRY HILL             34.59N 94.00W
05/10/2015                   POLK               AR   LAW ENFORCEMENT

            HIGHWAY 88 IS FLOODED ALONG WITH SEVERAL COUNTY ROADS IN
            EASTERN POLK COUNTY.

&&

61

Special weather statement, May 10, 11:29 PM CDT, 3 hours 37 minutes before

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Special weather statement, May 10, 11:30 PM CDT, 3 hours 36 minutes before

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Special weather statement, May 11, 12:59 AM CDT, 2 hours 7 minutes before

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Special weather statement, May 11, 3:02 AM CDT, 4 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
May 10, 7:57 PM CDT	Special Weather Statement	LZK	Scott	28 min
May 10, 8:07 PM CDT	Special Weather Statement	LZK	Polk	28 min
May 10, 8:23 PM CDT	Severe Thunderstorm Warning	LZK	Polk	37 min
May 10, 8:55 PM CDT	Flash Flood Warning	LZK	Garland, Johnson, Logan, Montgomery, Newton, Perry and 4 more	3 hr
May 10, 9:00 PM CDT	Special Weather Statement	LZK	Yell	30 min
May 10, 9:19 PM CDT	River Flood Warning	LZK	Perry	35 days
May 10, 9:26 PM CDT	River Flood Warning	LZK	Conway, Perry	5 days
May 10, 9:26 PM CDT	River Flood Warning	LZK	Faulkner, Perry	4 days
May 10, 9:37 PM CDT	Special Weather Statement	LZK	Montgomery	28 min
May 10, 9:54 PM CDT	Tornado Warning	LZK	Montgomery, Polk, Scott, Yell	36 min
May 10, 10:27 PM CDT	Severe Thunderstorm Warning	LZK	Yell	33 min
May 10, 10:31 PM CDT	Severe Thunderstorm Warning	LZK	Pope, Van Buren	33 min
May 10, 10:35 PM CDT	Severe Thunderstorm Warning	LZK	Montgomery, Polk, Scott	40 min
May 10, 11:10 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Montgomery, Polk, Scott, Yell	50 min
May 10, 11:29 PM CDT	Special Weather Statement	LZK	Pike	31 min
May 10, 11:30 PM CDT	Special Weather Statement	LZK	Van Buren	45 min
May 10, 11:59 PM CDT	Flash Flood Warning	LZK	Johnson, Logan, Montgomery, Newton, Polk, Pope and 3 more	3 hr
May 11, 12:59 AM CDT	Special Weather Statement	LZK	Cleburne, Faulkner, Lonoke, Pulaski, White	46 min
May 11, 2:03 AM CDT	River Flood Warning	LZK	Yell	35 hr
May 11, 2:19 AM CDT	Flash Flood Warning	LZK	Clark, Montgomery, Pike	3 hr
May 11, 3:02 AM CDT	Special Weather Statement	LZK	Faulkner, Lonoke, Pulaski, White	43 min
May 11, 3:53 AM CDT	Special Weather Statement	LZK	Jefferson, Lincoln	47 min
May 11, 8:28 AM CDT	Flash Flood Warning	LZK	Hot Spring	6 hr
May 11, 8:43 AM CDT	River Flood Warning	LZK	Clark, Hot Spring	68 hr
May 11, 8:46 AM CDT	River Flood Warning	LZK	Clark, Nevada, Ouachita	3 days
May 11, 8:48 AM CDT	River Flood Warning	LZK	Saline	49 hr
May 11, 9:41 AM CDT	Flash Flood Warning	LZK	Hot Spring	6 hr
May 11, 10:34 AM CDT	River Flood Warning	LZK	Independence, Jackson, Lawrence	18 days
May 11, 10:37 AM CDT	River Flood Warning	LZK	Independence	68 hr
May 11, 11:08 AM CDT	River Flood Warning	LZK	Arkansas, Desha, Lincoln	5 days
May 11, 11:17 AM CDT	River Flood Warning	LZK	Searcy	35 hr
May 11, 3:40 PM CDT	Flash Flood Warning	LZK	Hot Spring	2 hr

Nearby

Flash Flood Warnings in Arkansas, 2015 Every 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; radar from the NEXRAD Level II archive.