Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 271, NWS Norman, OK

May 28, 2023Harper County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 28, 2023, 7:01 PM CDT for Harper County, Oklahoma. It was in force for 33 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
May 28, 2023, 7:01 PM CDT (00:01 UTC)
Expired
May 28, 2023, 7:34 PM CDT
In force
33 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Harper County, OK

The radar

The Dodge City radar (KDDC), 111 km from the middle of the area, began a volume at 00:02 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

Dodge City, (KDDC), launched 00:00Z, 0.0 hours before the alert went out and 111 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, Dodge City, at 00:00Z on 2023-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 300 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, Dodge City, at 00:00Z on 2023-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
300 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1886 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 1:26 PM CDTSpecial Weather StatementOUNMcClain34 min
May 29, 1:46 PM CDTSpecial Weather StatementOUNCleveland, Pottawatomie29 min
May 29, 1:53 PM CDTSpecial Weather StatementOUNMarshall22 min
May 29, 2:12 PM CDTSpecial Weather StatementOUNCleveland, Pottawatomie33 min
May 29, 2:15 PM CDTSpecial Weather StatementOUNMarshall30 min
May 29, 2:28 PM CDTSevere Thunderstorm WarningOUNBryan, Marshall47 min
May 29, 3:01 PM CDTSpecial Weather StatementOUNHughes29 min
May 29, 3:25 PM CDTSpecial Weather StatementOUNGarvin20 min
May 29, 4:28 PM CDTAreal Flood AdvisoryOUNGarvin, Murray3 hr
May 29, 4:31 PM CDTAreal Flood AdvisoryOUNPontotoc119 min
May 29, 5:03 PM CDTSpecial Weather StatementOUNGarvin27 min
May 29, 5:14 PM CDTAreal Flood AdvisoryOUNJohnston, Pontotoc3 hr
May 29, 5:25 PM CDTAreal Flood AdvisoryOUNGarvin3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023Every severe thunderstorm warning in 2023

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.