Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 804, NWS Norman, OK

August 25, 2019Alfalfa County, Major County, Woods County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 25, 2019, 5:55 AM CDT for Alfalfa County, Major County, Woods County, Oklahoma. It was in force for 41 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
Aug 25, 2019, 5:55 AM CDT (10:55 UTC)
Expired
Aug 25, 2019, 6:36 AM CDT
In force
41 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Alfalfa County, OK, Major County, OK, Woods County, OK

The radar

The Vance AFB radar (KVNX), 43 km from the middle of the area, began a volume at 10:56 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, 10.9 hours before the alert went out and 175 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 2019-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1331 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 2019-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.19395878Sfc1 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
1331 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
1409 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 10:36 PM CDTSpecial Weather StatementOUNHarper24 min
Aug 24, 11:01 PM CDTSpecial Weather StatementOUNHarper29 min
Aug 24, 11:07 PM CDTSevere Thunderstorm WarningOUNHarper53 min
Aug 24, 11:45 PM CDTSpecial Weather StatementOUNHarper30 min
Aug 24, 11:55 PM CDTSevere Thunderstorm WarningOUNEllis, Harper, Woodward50 min
Aug 25, 12:28 AM CDTSpecial Weather StatementOUNEllis32 min
Aug 25, 12:33 AM CDTSpecial Weather StatementOUNWoodward27 min
Aug 25, 12:58 AM CDTSpecial Weather StatementOUNMajor47 min
Aug 25, 1:08 AM CDTSpecial Weather StatementOUNEllis52 min
Aug 25, 1:28 AM CDTSpecial Weather StatementOUNBlaine47 min
Aug 25, 1:31 AM CDTSpecial Weather StatementOUNDewey44 min
Aug 25, 1:39 AM CDTSevere Thunderstorm WarningOUNCuster, Dewey, Ellis, Roger Mills51 min
Aug 25, 2:16 AM CDTSpecial Weather StatementOUNBlaine29 min
Aug 25, 2:32 AM CDTSpecial Weather StatementOUNCuster, Washita43 min
Aug 25, 2:50 AM CDTSpecial Weather StatementOUNBlaine40 min
Aug 25, 3:20 AM CDTSpecial Weather StatementOUNCaddo40 min
Aug 25, 4:06 AM CDTSpecial Weather StatementOUNCaddo, Canadian, Grady54 min
Aug 25, 4:51 AM CDTSpecial Weather StatementOUNCleveland, McClain24 min
Aug 25, 5:03 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods57 min
Aug 25, 5:14 AM CDTSpecial Weather StatementOUNCleveland, Garvin, Pottawatomie31 min
Aug 25, 5:28 AM CDTSpecial Weather StatementOUNHarmon32 min
Aug 25, 5:46 AM CDTSpecial Weather StatementOUNGrant44 min
Aug 25, 5:58 AM CDTSpecial Weather StatementOUNKay32 min
Aug 25, 6:00 AM CDTSpecial Weather StatementOUNAlfalfa45 min
Aug 25, 6:32 AM CDTSpecial Weather StatementOUNGarfield, Major28 min
Aug 25, 6:40 AM CDTSpecial Weather StatementOUNKay35 min
Aug 25, 6:55 AM CDTSpecial Weather StatementOUNBlaine, Garfield, Kingfisher, Logan35 min
Aug 25, 7:26 AM CDTSpecial Weather StatementOUNCanadian, Lincoln, Logan, Oklahoma49 min
Aug 25, 8:39 AM CDTSpecial Weather StatementOUNKingfisher36 min
Aug 25, 8:43 AM CDTSevere Thunderstorm WarningOUNBlaine, Kingfisher, Major47 min
Aug 25, 11:14 AM CDTSpecial Weather StatementOUNGrant31 min
Aug 25, 2:51 PM CDTHeat AdvisoryOUNAtoka, Bryan, Caddo, Canadian, Carter, Cleveland and 28 more28 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019Every severe thunderstorm warning in 2019

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.