Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 683, NWS Norman, OK

October 4, 2013Washita County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 4, 2013, 8:43 PM CDT for Washita County, Oklahoma. 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
Oct 4, 2013, 8:43 PM CDT (01:43 UTC)
Expired
Oct 4, 2013, 9:30 PM CDT
In force
47 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

County Washita County, OK

The radar

The Altus AFB radar (KFDR), 103 km from the middle of the area, began a volume at 01:44 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 4, 3:11 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.7 hours before the alert went out and 145 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 2013-10-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 900 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 2013-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
900 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1412 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
0.1
Supercell composite
4.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 4, 7:04 PM CDTSpecial Weather StatementOUNGrant26 min
Oct 4, 7:15 PM CDTSpecial Weather StatementOUNMajor30 min
Oct 4, 7:41 PM CDTSpecial Weather StatementOUNMajor34 min
Oct 4, 7:55 PM CDTSevere Thunderstorm WarningOUNBlaine, Garfield, Kingfisher, Major50 min
Oct 4, 8:02 PM CDTSevere Thunderstorm WarningOUNWashita43 min
Oct 4, 8:11 PM CDTSpecial Weather StatementOUNGreer34 min
Oct 4, 8:15 PM CDTSpecial Weather StatementOUNBlaine30 min
Oct 4, 8:48 PM CDTSpecial Weather StatementOUNBlaine27 min
Oct 4, 8:52 PM CDTSpecial Weather StatementOUNGreer23 min
Oct 4, 9:02 PM CDTSpecial Weather StatementOUNKay28 min
Oct 4, 9:15 PM CDTSpecial Weather StatementOUNKingfisher30 min
Oct 4, 9:43 PM CDTSpecial Weather StatementOUNGarfield32 min
Oct 4, 9:53 PM CDTSpecial Weather StatementOUNKiowa37 min
Oct 4, 10:01 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa, Washita44 min
Oct 4, 10:10 PM CDTSevere Thunderstorm WarningOUNGarfield, Logan, Noble, Payne50 min
Oct 4, 10:19 PM CDTSpecial Weather StatementOUNCanadian26 min
Oct 4, 10:45 PM CDTSpecial Weather StatementOUNCaddo, Kiowa45 min
Oct 4, 10:47 PM CDTSpecial Weather StatementOUNCanadian28 min
Oct 4, 11:06 PM CDTSpecial Weather StatementOUNOklahoma24 min
Oct 4, 11:27 PM CDTSpecial Weather StatementOUNLogan, Oklahoma33 min
Oct 4, 11:29 PM CDTSpecial Weather StatementOUNComanche31 min
Oct 4, 11:59 PM CDTSpecial Weather StatementOUNComanche31 min
Oct 5, 12:22 AM CDTSpecial Weather StatementOUNLincoln, Payne23 min
Oct 5, 12:35 AM CDTSpecial Weather StatementOUNCaddo, Comanche, Grady, Tillman40 min
Oct 5, 3:04 AM CDTSpecial Weather StatementOUNCleveland, McClain26 min
Oct 5, 3:13 AM CDTSpecial Weather StatementOUNLincoln32 min
Oct 5, 4:13 AM CDTSpecial Weather StatementOUNMarshall32 min
Oct 5, 12:12 PM CDTSpecial Weather StatementOUNMarshall33 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013Every severe thunderstorm warning in 2013

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.