Alert archive / Arkansas / Flash Flood Warnings in 2009

Flash Flood Warning 166, NWS Little Rock, AR

December 24, 20096 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at Dec 24, 2009, 2:34 AM CST for 6 counties in Arkansas. It was in force for 4 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
Dec 24, 2009, 2:34 AM CST (08:34 UTC)
Expired
Dec 24, 2009, 6:30 AM CST
In force
4 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Clark County, AR, Dallas County, AR, Grant County, AR, Hot Spring County, AR, Ouachita County, AR, Pike County, AR

The radar

The Little Rock radar (KLZK), 107 km from the middle of the area, began a volume at 08:33 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 (KSHV), launched 00:00Z, 8.6 hours before the alert went out and 191 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, Shreveport, LA at 00:00Z on 2009-12-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 649 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, Shreveport, LA at 00:00Z on 2009-12-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 329 square meters per square second.1939587897Sfc1 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
649 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
446 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
329 m²/s²
0-3 km storm-relative helicity
329 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.8

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 23, 7:29 PM CSTFlash Flood WarningLZKFaulkner, Garland, Pulaski, Saline4 hr
Dec 23, 9:27 PM CSTFlash Flood WarningLZKClark, Hot Spring, Pike5 hr
Dec 23, 10:46 PM CSTSevere Thunderstorm WarningLZKClark, Dallas, Grant, Hot Spring, Ouachita59 min
Dec 23, 11:16 PM CSTFlash Flood WarningLZKFaulkner, Garland, Pulaski, Saline4 hr
Dec 23, 11:31 PM CSTFlash Flood WarningLZKHot Spring12 hr
Dec 24, 12:01 AM CSTFlash Flood WarningLZKCleburne, Faulkner, Independence, Jackson, Lonoke, Monroe and 3 more4 hr
Dec 24, 3:22 AM CSTAreal Flood WarningLZKConway, Garland, Montgomery, Perry, Pulaski, Saline and 1 more6 hr
Dec 24, 3:59 AM CSTAreal Flood WarningLZKCleburne, Faulkner, Independence, Jackson, Lonoke, Prairie and 4 more6 hr
Dec 24, 4:01 AM CSTWinter Storm WatchLZKBaxter, Conway, Garland, Marion, Perry, Pike8 hr
Dec 24, 4:49 AM CSTRiver Flood WarningLZKLawrence, Randolph38 hr
Dec 24, 6:34 AM CSTAreal Flood WarningLZKCalhoun, Clark, Cleveland, Dallas, Garland, Grant and 5 more4 hr
Dec 24, 7:45 AM CSTRiver Flood WarningLZKPerry4 days
Dec 24, 7:50 AM CSTRiver Flood WarningLZKYell72 hr
Dec 24, 8:28 AM CSTSevere Thunderstorm WarningLZKBradley, Cleveland, Drew, Lincoln47 min
Dec 24, 8:38 AM CSTTornado WarningLZKBradley, Cleveland, Drew, Lincoln37 min
Dec 24, 9:10 AM CSTRiver Flood WarningLZKAshley, Bradley, Cleveland, Drew11 days
Dec 24, 9:19 AM CSTRiver Flood WarningLZKFulton, Sharp23 hr
Dec 24, 9:22 AM CSTRiver Flood WarningLZKRandolph23 hr
Dec 24, 9:43 AM CSTAreal Flood WarningLZKConway, Faulkner, Garland, Grant, Hot Spring, Jefferson and 10 more4 hr
Dec 24, 9:49 AM CSTFlash Flood WarningLZKArkansas, Bradley, Calhoun, Cleveland, Dallas, Desha and 4 more4 hr
Dec 24, 10:13 AM CSTAreal Flood WarningLZKArkansas, Baxter, Cleburne, Conway, Faulkner, Independence and 14 more4 hr
Dec 24, 10:45 AM CSTAreal Flood WarningLZKCalhoun, Clark, Cleveland, Dallas, Garland, Grant and 3 more3 hr
Dec 24, 12:09 PM CSTRiver Flood WarningLZKIndependence, Jackson3 days
Dec 24, 12:22 PM CSTWinter Storm WarningLZKMarion16 hr
Dec 24, 12:22 PM CSTWinter Weather AdvisoryLZKBaxter, Cleburne, Conway, Fulton, Independence, Izard and 4 more18 hr
Dec 24, 2:05 PM CSTAreal Flood WarningLZKArkansas, Baxter, Cleburne, Cleveland, Conway, Dallas and 22 more4 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.