Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 887, NWS Norman, OK

October 11, 20164 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 11, 2016, 10:59 PM CDT for 4 counties in Oklahoma. It was in force for 31 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
Oct 11, 2016, 10:59 PM CDT (03:59 UTC)
Expired
Oct 11, 2016, 11:30 PM CDT
In force
31 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Garfield County, OK, Grant County, OK, Kay County, OK, Noble County, OK

The radar

The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 04:03 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

Norman, OK (KOUN), launched 00:00Z, 4.0 hours before the alert went out and 153 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, Norman, OK at 00:00Z on 2016-10-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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, Norman, OK at 00:00Z on 2016-10-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 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
31 J/kg
Mixed-layer CIN
-671 J/kg
Mixed-layer LCL
2002 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 11, 7:45 PM CDTSpecial Weather StatementOUNWoods30 min
Oct 11, 8:15 PM CDTSpecial Weather StatementOUNAlfalfa30 min
Oct 11, 10:01 PM CDTSpecial Weather StatementOUNWoods29 min
Oct 11, 10:15 PM CDTSpecial Weather StatementOUNGrant30 min
Oct 11, 10:34 PM CDTSpecial Weather StatementOUNAlfalfa26 min
Oct 11, 10:46 PM CDTSpecial Weather StatementOUNGrant29 min
Oct 11, 11:08 PM CDTSpecial Weather StatementOUNGrant37 min
Oct 11, 11:41 PM CDTSpecial Weather StatementOUNNoble34 min
Oct 12, 12:11 AM CDTSpecial Weather StatementOUNKay49 min
Oct 12, 2:12 AM CDTSpecial Weather StatementOUNKay33 min
Oct 12, 2:15 AM CDTSevere Thunderstorm WarningOUNKay30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2016Every severe thunderstorm warning in 2016

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.