Alert archive / Arkansas / Flash Flood Warnings in 2015

Flash Flood Warning 79, NWS Little Rock, AR

July 5, 2015Johnson County, Logan County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Jul 5, 2015, 4:11 PM CDT for Johnson County, Logan 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
Jul 5, 2015, 4:11 PM CDT (21:11 UTC)
Expired
Jul 5, 2015, 7:00 PM CDT
In force
3 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Johnson County, AR, Logan County, AR

The radar

The Western Arkansas radar (KSRX), 71 km from the middle of the area, began a volume at 21:13 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, 9.2 hours before the alert went out and 169 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 12:00Z on 2015-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2020 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 12:00Z on 2015-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
2020 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
617 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 5, 2:49 PM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jul 5, 2:49 PM CDT, 1 hour 22 minutes before
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Hazardous weather outlook, Jul 5, 8:48 AM CDT, 7 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
848 AM CDT SUN JUL 5 2015

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-061000-
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-
848 AM CDT SUN JUL 5 2015

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

.DAY ONE...TODAY AND TONIGHT

ISOLATED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE TODAY AND
TONIGHT OVER MAINLY CENTRAL AND SOUTHERN ARKANSAS. AN ISOLATED
STRONG STORM MAY BE SEEN...BUT OVERALL COVERAGE AND POTENTIAL IS
EXPECTED TO REMAIN LOW. LOCALLY HEAVY RAIN WILL BE POSSIBLE WITH ANY
STORM.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NORTHWEST FLOW ALOFT WILL PERSIST OVER THE REGION THROUGH THE
EARLY PART OF THE COMING WEEK...AS A FEW MORE UPPER LEVEL
IMPULSES CROSS ARKANSAS. THIS WILL RESULT IN CONTINUING CHANCES
OF SHOWERS AND THUNDERSTORMS...WITH THE BEST CHANCE FOR RAIN OVER
THE NORTHERN HALF OF THE STATE. BY MID WEEK...UPPER LEVEL HIGH
PRESSURE IS FORECAST TO BUILD IN FROM THE SOUTHEAST...AND RAIN
CHANCES WILL GRADUALLY DECREASE ACROSS ARKANSAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

&&

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

59

In the hours before

Local storm report, Jul 5, 11:17 AM CDT, 4 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1117 AM CDT SUN JUL 05 2015

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

1115 AM     FLASH FLOOD      MCGEHEE                 33.63N 91.39W
07/05/2015                   DESHA              AR   LAW ENFORCEMENT

            STREET FLOODING WAS REPORTED IN MCGEHEE.

&&

55
Special weather statement, Jul 5, 12:03 PM CDT, 4 hours 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1203 PM CDT SUN JUL 5 2015

ARZ057-064-065-051725-
ARKANSAS AR-DESHA AR-LINCOLN AR-
1203 PM CDT SUN JUL 5 2015

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN LINCOLN...CENTRAL DESHA
AND EXTREME SOUTHERN ARKANSAS COUNTIES UNTIL 1230 PM CDT...

AT 1202 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM CENTERED NEAR DUMAS...MOVING EAST AT 25 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

* LOCATIONS IMPACTED INCLUDE...
  ROHWER...             DUMAS...              YANCOPIN...
  WATSON...             MITCHELLVILLE...      LUCCA LANDING...
  KELSO...              BACK GATE...          REED...
  PICKENS...

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

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY...TURN AROUND DONT DROWN!

LAT...LON 3369 9118 3387 9157 3398 9156 3393 9106
TIME...MOT...LOC 1702Z 286DEG 20KT 3390 9149

55
Local storm report, Jul 5, 2:11 PM CDT, 2 hours before
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Special weather statement, Jul 5, 2:51 PM CDT, 1 hour 20 minutes before
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Local storm report, Jul 5, 3:48 PM CDT, 23 minutes before
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Special weather statement, Jul 5, 4:02 PM CDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 10:04 AM CDTFlash Flood WarningLZKDesha, Drew3 hr
Jul 5, 12:30 PM CDTFlash Flood WarningLZKDesha, Drew, Lincoln3 hr
Jul 5, 2:23 PM CDTFlash Flood WarningLZKBoone, Marion, Newton, Searcy3 hr
Jul 5, 2:37 PM CDTFlash Flood WarningLZKBradley, Calhoun, Ouachita3 hr
Jul 5, 2:51 PM CDTSpecial Weather StatementLZKScott29 min
Jul 5, 3:57 PM CDTSevere Thunderstorm WarningLZKLogan, Scott48 min
Jul 5, 4:02 PM CDTSpecial Weather StatementLZKLogan48 min
Jul 5, 4:48 PM CDTSevere Thunderstorm WarningLZKJohnson, Logan27 min
Jul 5, 4:56 PM CDTSpecial Weather StatementLZKJohnson29 min
Jul 5, 4:57 PM CDTSpecial Weather StatementLZKSaline48 min
Jul 5, 5:14 PM CDTSpecial Weather StatementLZKPope31 min
Jul 5, 5:23 PM CDTFlash Flood WarningLZKBoone, Newton, Searcy3 hr

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; radar from the NEXRAD Level II archive.