Alert archive / Arkansas / Flash Flood Warnings in 2018

Flash Flood Warning 119, NWS Little Rock, AR

September 8, 2018Jackson County, White County, Woodruff County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Sep 8, 2018, 6:25 PM CDT for Jackson County, White County, Woodruff 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 8, 2018, 6:25 PM CDT (23:25 UTC)
Expired
Sep 8, 2018, 8:30 PM CDT
In force
2 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Jackson County, AR, White County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 97 km from the middle of the area, began a volume at 23:25 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, 11.4 hours before the alert went out and 358 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 2018-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 175 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 2018-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
175 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
-29 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
Sep 7, 8:06 PM CDTSpecial Weather StatementLZKJefferson39 min
Sep 7, 8:27 PM CDTSpecial Weather StatementLZKArkansas48 min
Sep 7, 9:43 PM CDTSpecial Weather StatementLZKJefferson47 min
Sep 8, 3:13 PM CDTSpecial Weather StatementLZKJackson47 min
Sep 8, 3:43 PM CDTSpecial Weather StatementLZKPulaski47 min
Sep 8, 3:51 PM CDTFlash Flood WarningLZKPulaski2 hr
Sep 8, 4:05 PM CDTFlash Flood WarningLZKClark, Garland, Hot Spring, Montgomery, Pike86 min
Sep 8, 4:17 PM CDTFlash Flood WarningLZKLonoke, Prairie, Pulaski103 min
Sep 8, 5:26 PM CDTSpecial Weather StatementLZKWhite49 min
Sep 8, 5:55 PM CDTSpecial Weather StatementLZKHot Spring50 min
Sep 8, 5:58 PM CDTSpecial Weather StatementLZKJefferson47 min
Sep 8, 6:34 PM CDTFlash Flood WarningLZKJefferson116 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.