Alert archive / Arkansas / Flash Flood Warnings in 2018

Flash Flood Warning 84, NWS Little Rock, AR

July 3, 2018Boone County, Newton County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Jul 3, 2018, 3:34 PM CDT for Boone County, Newton 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
Jul 3, 2018, 3:34 PM CDT (20:34 UTC)
Expired
Jul 3, 2018, 6:00 PM CDT
In force
2 hr
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Flood severity
None

Counties Boone County, AR, Newton County, AR

The radar

The Springfield radar (KSGF), 127 km from the middle of the area, began a volume at 20:36 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, 8.6 hours before the alert went out and 105 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 2018-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2124 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 2018-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
2124 J/kg
Mixed-layer CIN
-58 J/kg
Mixed-layer LCL
1015 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
52 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
Jul 3, 1:07 PM CDTSpecial Weather StatementLZKHot Spring23 min
Jul 3, 1:28 PM CDTSpecial Weather StatementLZKHot Spring32 min
Jul 3, 1:50 PM CDTSpecial Weather StatementLZKHot Spring25 min
Jul 3, 1:58 PM CDTSevere Thunderstorm WarningLZKClark, Hot Spring32 min
Jul 3, 2:29 PM CDTSpecial Weather StatementLZKClark31 min
Jul 3, 3:10 PM CDTSpecial Weather StatementLZKPolk35 min
Jul 3, 6:04 PM CDTSpecial Weather StatementLZKYell41 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.