Alert archive / Arkansas / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 204, NWS Memphis, TN

July 17, 2022Clay County, Greene County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Jul 17, 2022, 8:28 PM CDT for Clay County, Greene County, Arkansas. It was in force for 47 min. 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 17, 2022, 8:28 PM CDT (01:28 UTC)
Expired
Jul 17, 2022, 9:15 PM CDT
In force
47 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Clay County, AR, Greene County, AR

The radar

The Memphis radar (KNQA), 114 km from the middle of the area, began a volume at 01:29 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

Little Rock, AR (KLZK), launched 00:00Z, 1.5 hours before the alert went out and 164 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, Little Rock, AR at 00:00Z on 2022-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2292 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, Little Rock, AR at 00:00Z on 2022-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
2292 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1543 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 2:35 AM CDTSpecial Weather StatementMEGBenton, Marshall25 min
Jul 18, 4:05 AM CDTSpecial Weather StatementMEGCoahoma25 min
Jul 18, 2:34 PM CDTHeat AdvisoryMEGCoahoma, DeSoto, Panola, Quitman, Tallahatchie, Tate and 1 more44 hr
Jul 18, 1:59 AM CDTAreal Flood AdvisoryMEGShelby4 hr
Jul 17, 7:48 PM CDTSevere Thunderstorm WarningMEGClay42 min
Jul 17, 8:51 PM CDTSpecial Weather StatementMEGGreene54 min
Jul 17, 9:49 PM CDTSpecial Weather StatementMEGCraighead41 min
Jul 17, 11:04 PM CDTSevere Thunderstorm WarningMEGCraighead, Cross, Poinsett, St. Francis41 min
Jul 17, 11:28 PM CDTAreal Flood AdvisoryMEGCraighead3 hr
Jul 18, 12:06 AM CDTSpecial Weather StatementMEGCrittenden, Cross, St. Francis39 min
Jul 18, 12:44 AM CDTSpecial Weather StatementMEGCrittenden, St. Francis31 min
Jul 18, 3:34 AM CDTSpecial Weather StatementMEGPhillips26 min
Jul 18, 2:34 PM CDTExcessive Heat WarningMEGClay, Craighead, Cross, Greene, Lee, Phillips and 2 more27 hr

Nearby

Severe Thunderstorm Warnings in Arkansas, 2022Every severe thunderstorm warning in 2022

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.