Alert archive / Arkansas / Flash Flood Warnings in 2009

Flash Flood Warning 80, NWS Little Rock, AR

July 30, 20096 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Jul 30, 2009, 2:18 PM CDT for 6 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
Jul 30, 2009, 2:18 PM CDT (19:18 UTC)
Expired
Jul 30, 2009, 5:15 PM CDT
In force
3 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Baxter County, AR, Boone County, AR, Fulton County, AR, Marion County, AR, Newton County, AR, Searcy County, AR

The radar

The Springfield radar (KSGF), 136 km from the middle of the area, began a volume at 19:17 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

Springfield, MO (KSGF), launched 12:00Z, 7.3 hours before the alert went out and 131 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 2009-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1890 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 2009-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.19395878Sfc1 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
1890 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

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 30, 12:13 PM CDT, 2 hours 5 minutes earlier.

Area forecast discussion, Jul 30, 12:13 PM CDT, 2 hours 5 minutes before
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Hazardous weather outlook, Jul 30, 5:00 AM CDT, 9 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT THU JUL 30 2009

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-311000-
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 JUL 30 2009

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

.DAY ONE...TODAY AND TONIGHT

AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE REGION TODAY...AND
MOVE ALONG THE STALLED FRONT OVER ARKANSAS. NUMEROUS SHOWERS AND
THUNDERSTORMS WILL MOVE ACROSS THE STATE TODAY...BRINGING HEAVY
RAINFALL. A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING
FOR CENTRAL AND SOUTHERN ARKANSAS. THIS WATCH WILL INCLUDE AREAS
SOUTH OF A LINE FROM WALDRON TO SEARCY. RAINFALL AMOUNTS TODAY AND
TONIGHT WILL RANGE FROM ONE TO TWO INCHES...WITH SOME LOCATIONS
POSSIBLY RECEIVING UP TO FOUR INCHES ACROSS SOUTHERN ARKANSAS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE FRONT WILL REMAIN ACROSS SOUTHERN ARKANSAS FRIDAY...AND WILL
MOVE NORTH AS A WARM FRONT ON SATURDAY. RAIN CHANCES WILL REMAIN IN
THE FORECAST THROUGH THE WEEKEND...AS ANOTHER COLD FRONT WILL MOVE
INTO THE STATE SUNDAY.

THE AREA WILL REMAIN UNDER NORTHWEST FLOW AT THE UPPER LEVELS...WITH
MANY SYSTEMS MOVING THROUGH. THIS WILL KEEP RAIN CHANCES IN THE
FORECAST...WITH THE TIMING BETTER REFINED IN THE COMING DAYS.
FLOODING WILL CONTINUE TO BE A CONCERN...WITH MUCH OF THE STATE
RECEIVING ABOVE AVERAGE RAINFALL FOR THE MONTH OF JULY. THIS WILL
LEAD TO SATURATED GROUND CONDITIONS...AND ANY RAINFALL COULD PRODUCE
FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

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

58

In the hours before

Local storm report, Jul 30, 11:41 AM CDT, 2 hours 37 minutes before
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  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 9:11 AM CDTRiver Flood WarningLZKCalhoun, Ouachita8 days
Jul 30, 10:52 AM CDTFlash Flood WarningLZKClark, Dallas, Grant, Hot Spring, Ouachita5 hr
Jul 30, 2:49 PM CDTSevere Thunderstorm WarningLZKArkansas, Desha, Jefferson, Lincoln41 min
Jul 30, 3:21 PM CDTSevere Thunderstorm WarningLZKArkansas, Desha, Jefferson, Lincoln, Monroe39 min
Jul 30, 3:31 PM CDTTornado WarningLZKArkansas, Desha, Jefferson, Lincoln, Monroe22 min
Jul 30, 5:00 PM CDTAreal Flood AdvisoryLZKGarland, Hot Spring, Lonoke, Pulaski, Saline2 hr

Nearby

Flash Flood Warnings in Arkansas, 2009Every flash flood warning in 2009

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.