Alert archive / Oklahoma / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 828

October 1, 20054 counties in Kansas; 6 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Oct 1, 2005, 4:10 PM CDT for 4 counties in Kansas; 6 counties in Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Oct 1, 2005, 4:10 PM CDT (21:10 UTC)
Expired
Oct 1, 2005, 7:26 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center

Counties Chautauqua County, KS, Cowley County, KS, Elk County, KS, Sumner County, KS, Garfield County, OK, Grant County, OK, Kay County, OK, Noble County, OK, Osage County, OK, Washington County, OK

The radar

The Vance AFB radar (KVNX), 73 km from the middle of the area, began a volume at 21:13 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.

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Oct 1, 4:59 PM CDTSevere Thunderstorm WarningICTChautauqua54 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.2 hours before the alert went out and 186 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 12:00Z on 2005-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 198 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 12:00Z on 2005-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 511 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
198 J/kg
Mixed-layer CIN
-305 J/kg
Mixed-layer LCL
812 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
511 m²/s²
0-3 km storm-relative helicity
637 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 1, 3:53 PM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Cowley, Labette, Montgomery97 min
Oct 1, 6:04 PM CDTMesoscale DiscussionSPCChautauqua, Cowley, Elk, Montgomery, Sumner, Wilson86 min
Sep 30, 9:23 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Carter, Cleveland and 39 more97 min
Sep 30, 9:25 PM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Canadian, Carter, Cleveland, Coal and 26 more7 hr
Sep 30, 10:51 PM CDTMesoscale DiscussionSPCAlfalfa, Atoka, Beckham, Blaine, Bryan, Caddo and 44 more84 min
Oct 1, 1:15 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 29 more2 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 2005Severe Thunderstorm Watches in Kansas, 2005Every severe thunderstorm watch in 2005

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.