Alert archive / Arkansas / Flash Flood Warnings in 2009

Flash Flood Warning 37, NWS Little Rock, AR

May 10, 20096 counties in Arkansas

NWS Little Rock, AR issued this flash flood warning at May 10, 2009, 4:04 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
May 10, 2009, 4:04 PM CDT (21:04 UTC)
Expired
May 10, 2009, 7:00 PM CDT
In force
3 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Dallas County, AR, Ouachita County, AR

The radar

The Little Rock radar (KLZK), 124 km from the middle of the area, began a volume at 21:05 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 12:00Z, 9.1 hours before the alert went out and 178 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 12:00Z on 2009-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 728 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 12:00Z on 2009-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 square meters per square second.193958Sfc1 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
728 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
459 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.6

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:52 PM CDTRiver Flood WarningLZKRandolph12 hr
May 10, 1:10 AM CDTSevere Thunderstorm WarningLZKMontgomery, Pike50 min
May 10, 2:02 AM CDTSevere Thunderstorm WarningLZKPolk43 min
May 10, 2:45 AM CDTSevere Thunderstorm WarningLZKPolk45 min
May 10, 3:45 AM CDTSevere Thunderstorm WarningLZKCalhoun, Clark, Dallas, Ouachita45 min
May 10, 4:30 AM CDTSevere Thunderstorm WarningLZKBradley, Calhoun, Cleveland, Dallas, Ouachita45 min
May 10, 5:32 AM CDTFlash Flood WarningLZKBradley, Calhoun, Clark, Cleveland, Dallas, Ouachita and 1 more4 hr
May 10, 5:42 AM CDTAreal Flood AdvisoryLZKGarland, Lonoke, Pulaski, Saline2 hr
May 10, 7:57 AM CDTAreal Flood AdvisoryLZKGarland, Lonoke, Pulaski, Saline108 min
May 10, 9:05 AM CDTRiver Flood WarningLZKClark, Hot Spring24 hr
May 10, 9:05 AM CDTRiver Flood WarningLZKClark, Nevada, Ouachita24 hr
May 10, 9:49 AM CDTRiver Flood AdvisoryLZKIndependence, Jackson36 hr
May 10, 10:00 AM CDTAreal Flood WarningLZKBradley, Calhoun, Clark, Cleveland, Dallas, Ouachita6 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.