Alert archive / Arkansas / Flash Flood Warnings in 2018

Flash Flood Warning 52, NWS Little Rock, AR

May 21, 2018Desha County, Drew County, Arkansas

NWS Little Rock, AR issued this flash flood warning at May 21, 2018, 4:58 PM CDT for Desha County, Drew 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
May 21, 2018, 4:58 PM CDT (21:58 UTC)
Expired
May 21, 2018, 7:00 PM CDT
In force
2 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Desha County, AR, Drew County, AR

The radar

The Little Rock radar (KLZK), 144 km from the middle of the area, began a volume at 22:01 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

Jackson, MS (KJAN), launched 12:00Z, 10.0 hours before the alert went out and 203 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, Jackson, MS at 12:00Z on 2018-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 313 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, Jackson, MS at 12:00Z on 2018-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
313 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
915 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
-17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 7:00 PM CDTSpecial Weather StatementLZKPrairie45 min
May 20, 7:10 PM CDTSpecial Weather StatementLZKPrairie50 min
May 20, 7:16 PM CDTFlash Flood WarningLZKPrairie, White, Woodruff2 hr
May 20, 7:29 PM CDTSpecial Weather StatementLZKMarion46 min
May 20, 7:35 PM CDTSevere Thunderstorm WarningLZKBoone, Marion40 min
May 20, 7:52 PM CDTSpecial Weather StatementLZKGrant23 min
May 20, 9:20 PM CDTSpecial Weather StatementLZKJefferson25 min
May 21, 2:07 AM CDTSpecial Weather StatementLZKLonoke23 min
May 21, 3:49 AM CDTSpecial Weather StatementLZKArkansas26 min
May 21, 5:33 AM CDTSpecial Weather StatementLZKDallas, Grant27 min
May 21, 9:43 AM CDTFlash Flood WarningLZKLogan3 hr
May 21, 1:23 PM CDTSpecial Weather StatementLZKCleveland52 min
May 21, 2:17 PM CDTSpecial Weather StatementLZKJefferson43 min
May 21, 3:12 PM CDTSpecial Weather StatementLZKJefferson48 min
May 21, 3:20 PM CDTSpecial Weather StatementLZKLincoln40 min
May 21, 3:23 PM CDTSevere Thunderstorm WarningLZKDesha, Drew, Lincoln37 min
May 21, 3:33 PM CDTSpecial Weather StatementLZKScott42 min
May 21, 3:54 PM CDTSpecial Weather StatementLZKArkansas, Desha, Lincoln51 min
May 21, 4:16 PM CDTSpecial Weather StatementLZKArkansas29 min
May 21, 4:43 PM CDTSpecial Weather StatementLZKDesha47 min
May 21, 4:51 PM CDTSevere Thunderstorm WarningLZKDesha24 min

Nearby

Flash Flood Warnings in Arkansas, 2018Every flash flood warning in 2018

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.