Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 889, NWS Norman, OK

September 28, 2019Blaine County, Caddo County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Sep 28, 2019, 7:27 PM CDT for Blaine County, Caddo County, Oklahoma. It was in force for 37 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
Sep 28, 2019, 7:27 PM CDT (00:27 UTC)
Expired
Sep 28, 2019, 8:04 PM CDT
In force
37 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Blaine County, OK, Caddo County, OK

The radar

The Norman radar (KTLX), 104 km from the middle of the area, began a volume at 00:27 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, 0.5 hours before the alert went out and 283 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 2019-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 49 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 2019-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 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
49 J/kg
Mixed-layer CIN
-158 J/kg
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
414 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 7:00 PM CDTSpecial Weather StatementOUNPayne30 min
Sep 28, 7:07 PM CDTSpecial Weather StatementOUNBlaine23 min
Sep 28, 7:19 PM CDTSpecial Weather StatementOUNBlaine26 min
Sep 28, 7:20 PM CDTSevere Thunderstorm WarningOUNNoble, Payne40 min
Sep 28, 7:41 PM CDTSpecial Weather StatementOUNHarper34 min
Sep 28, 7:53 PM CDTSevere Thunderstorm WarningOUNKay, Noble27 min
Sep 28, 9:53 PM CDTSpecial Weather StatementOUNGrant37 min
Sep 28, 9:56 PM CDTSpecial Weather StatementOUNWoods34 min
Sep 28, 10:34 PM CDTSpecial Weather StatementOUNRoger Mills56 min

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.