Alert archive / Oklahoma / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 460

June 20, 20017 counties in Kansas; 11 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Jun 20, 2001, 9:00 PM CDT for 7 counties in Kansas; 11 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 20, 2001, 9:00 PM CDT (02:00 UTC)
Expired
Jun 21, 2001, 2:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Barber County, KS, Clark County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Major County, OK, Noble County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 65 km from the middle of the area, began a volume at 02:02 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

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

IssuedProductOfficeCountiesLasted
Jun 20, 9:07 PM CDTSevere Thunderstorm WarningICTSedgwick38 min
Jun 20, 9:12 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods48 min
Jun 20, 9:13 PM CDTSevere Thunderstorm WarningDDCBarber62 min
Jun 20, 9:36 PM CDTSevere Thunderstorm WarningICTSumner59 min
Jun 20, 9:47 PM CDTSevere Thunderstorm WarningOUNHarper43 min
Jun 20, 9:59 PM CDTSevere Thunderstorm WarningOUNAlfalfa31 min
Jun 20, 10:28 PM CDTSevere Thunderstorm WarningOUNEllis, Harper, Woodward47 min
Jun 20, 10:30 PM CDTSevere Thunderstorm WarningOUNAlfalfa45 min
Jun 20, 10:40 PM CDTSevere Thunderstorm WarningICTHarper50 min
Jun 20, 11:03 PM CDTSevere Thunderstorm WarningDDCClark57 min
Jun 20, 11:29 PM CDTSevere Thunderstorm WarningDDCComanche61 min
Jun 20, 11:29 PM CDTSevere Thunderstorm WarningICTHarper26 min
Jun 20, 11:43 PM CDTSevere Thunderstorm WarningICTKingman47 min
Jun 20, 11:47 PM CDTSevere Thunderstorm WarningICTSedgwick58 min
Jun 20, 11:56 PM CDTSevere Thunderstorm WarningDDCBarber64 min
Jun 21, 12:02 AM CDTSevere Thunderstorm WarningDDCClark58 min

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 2.0 hours before the alert went out and 136 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 2001-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1362 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 2001-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 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
1362 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
956 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
395 m²/s²
Significant tornado parameter
2.2
Supercell composite
18.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

Nearby

Severe Thunderstorm Watches in Oklahoma, 2001Severe Thunderstorm Watches in Kansas, 2001Every severe thunderstorm watch in 2001

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.