Alert archive / Arkansas / Flash Flood Warnings in 2007

Flash Flood Warning 79, NWS Little Rock, AR

September 4, 2007White County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Sep 4, 2007, 4:15 PM CDT for White County, Arkansas. It was in force for 2 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
Sep 4, 2007, 4:15 PM CDT (21:15 UTC)
Expired
Sep 4, 2007, 6:15 PM CDT
In force
2 hr
Issued by
NWS Little Rock, AR
Area
Whole counties

County White County, AR

The radar

The Little Rock radar (KLZK), 66 km from the middle of the area, began a volume at 21:17 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 (KLZK), launched 12:00Z, 9.3 hours before the alert went out and 170 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, Little Rock, AR at 12:00Z on 2007-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1094 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, Little Rock, AR at 12:00Z on 2007-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
1094 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
770 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
74 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 Sep 4, 2:36 PM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, Sep 4, 2:36 PM CDT, 1 hour 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
236 PM CDT TUE SEP 4 2007

.SHORT TERM...TONIGHT THROUGH THURSDAY NIGHT
KLZK RADAR CONTINUES TO SHOW THE PROGRESSION OF A BAND OF SHRA AND
ISOLATED TSRA...SOME PRODUCING HEAVY RAIN...MOVING NORTH INTO
NORTHERN ARKANSAS. SATELLITE IMAGERY INDICATES A SMALL AMPLITUDE
SHORT WAVE MOVING NORTHEAST INTO NORTHERN ARKANSAS...WHICH IS
CONTRIBUTING TO THE FORCING FOR THE INDICATED CONVECTION.

SEVERAL ADDITIONAL DISTURBANCES ARE EXPECTED TO MOVE NORTHEASTWARD
ACROSS THE FORECAST AREA DURING THIS PERIOD...BEFORE THE MAIN UPPER
LOW OVER WEST TEXAS MOVES INTO THE MID MISSISSIPPI VALLEY REGION
LATE IN THIS PERIOD.  EXPECT SEVERAL ROUNDS OF CONVECTION...SOME PRODUCING
ADDITIONAL LOCALLY HEAVY RAINFALL.  EXPECT THE GREATEST COVERAGE AND
INTENSITY ACROSS NORTHWEST SECTIONS OF THE CWA.

&&

.LONG TERM...FRIDAY THROUGH TUESDAY
A COLD FRONT WILL REACH THE STATE FROM THE NORTHWEST AT THE
BEGINNING OF THE LONG TERM. THIS WILL BRING A CONTINUED CHANCE OF
SHOWERS AND THUNDERSTORMS TO THE STATE THROUGH THE WEEKEND. THE
FRONT IS EXPECTED TO SLOWLY MAKE ITS WAY SOUTHWARD...EXITING THE
STATE BY LATE MONDAY OR EARLY TUESDAY. HIGH PRESSURE AND DRY WEATHER
ARE EXPECTED TO RETURN TO THE STATE BEHIND THE FRONT FOR THE MIDDLE
OF NEXT WEEK. HIGH TEMPERATURES FOR THE LONG TERM WILL BE MAINLY IN
THE 80S...AND LOWS WILL BE IN THE LOWER 60S TO LOWER 70S.

&&

.PRELIMINARY POINT TEMPS/POPS...
BATESVILLE AR     70  82  70  84 /  60  70  70  60
CAMDEN AR         72  83  72  86 /  50  70  70  40
HARRISON AR       68  79  68  83 /  60  70  70  50
HOT SPRINGS AR    72  82  72  86 /  60  80  80  40
LITTLE ROCK   AR  72  83  72  85 /  60  70  70  50
MONTICELLO AR     71  86  72  86 /  40  60  60  40
MOUNT IDA AR      71  81  70  85 /  60  80  80  40
MOUNTAIN HOME AR  68  80  68  83 /  60  70  70  60
NEWPORT AR        70  83  71  85 /  50  70  70  70
PINE BLUFF AR     72  85  72  86 /  50  70  70  50
RUSSELLVILLE AR   70  81  70  85 /  60  80  80  50
SEARCY AR         70  83  72  85 /  60  70  70  50
STUTTGART AR      72  85  72  86 /  50  70  70  50
&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

SHORT TERM...55 / LONG TERM...219
Hazardous weather outlook, Sep 4, 5:00 AM CDT, 11 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT TUE SEP 4 2007

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-051000-
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 PM CDT TUE SEP 4 2007

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

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL INCREASE ACROSS MOST OF ARKANSAS
TODAY WITH THE GREATEST COVERAGE DURING THE AFTERNOON AND EVENING.
LOCALLY HEAVY RAIN WILL BE POSSIBLE AND LOCALIZED MINOR FLOODING
WILL BE POSSIBLE FROM THE STRONGEST STORMS. LITTLE OR NO SEVERE
WEATHER IS EXPECTED ALTHOUGH AN ISOLATED WIND DAMAGE REPORT OR TWO
COULD OCCUR DURING THE MIDDLE TO LATE AFTERNOON.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS ARKANSAS THROUGH THE
PERIOD. THERE IS A CHANCE MOISTURE FROM HURRICANES HENRIETTE AND
FELIX COULD GET INGESTED INTO THE WEATHER SYSTEMS THAT WILL AFFECT
ARKANSAS. SHOULD THIS OCCUR...THE CHANCE OF FLOODING WILL INCREASE.
LOCALLY HEAVY RAIN WILL REMAIN POSSIBLE WITH THE STRONGEST STORMS.

A COLD FRONT WILL MOVE INTO ARKANSAS OVER THE WEEKEND THEN MAY STALL
SOMEWHERE IN THE AREA BEFORE MOVING OUT OF THE AREA ABOUT MONDAY.
AT THIS TIME...NO MORE THAN ISOLATED SEVERE WEATHER IS EXPECTED
BUT THE POSSIBILITY OF HEAVY RAIN AND FLOODING COULD EXIST ESPECIALLY
IF THE FRONT BECOMES STATIONARY AND HURRICANE MOISTURE GETS INTO
THE SYSTEM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

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

29

In the hours before

Local storm report, Sep 4, 4:00 PM CDT, 15 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 1:03 PM CDTFlash Flood WarningLZKConway2 hr
Sep 4, 3:52 PM CDTFlash Flood WarningLZKFaulkner113 min
Sep 4, 5:49 PM CDTFlash Flood WarningLZKPrairie116 min

Nearby

Flash Flood Warnings in Arkansas, 2007Every flash flood warning in 2007

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.