Alert archive / Kansas / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 741

September 17, 200123 counties in Kansas

The Storm Prediction Center issued this severe thunderstorm watch at Sep 17, 2001, 6:15 PM CDT for 23 counties in Kansas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Sep 17, 2001, 6:15 PM CDT (23:15 UTC)
Expired
Sep 18, 2001, 12:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 23 counties

Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Ellsworth County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS

The radar

The Wichita radar (KICT), 64 km from the middle of the area, began a volume at 23:15 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

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

IssuedProductOfficeCountiesLasted
Sep 17, 6:39 PM CDTTornado WarningICTButler51 min
Sep 17, 6:51 PM CDTSevere Thunderstorm WarningICTGreenwood54 min
Sep 17, 6:57 PM CDTSevere Thunderstorm WarningICTHarvey63 min
Sep 17, 7:32 PM CDTSevere Thunderstorm WarningICTBarton58 min
Sep 17, 7:40 PM CDTSevere Thunderstorm WarningICTGreenwood65 min
Sep 17, 7:44 PM CDTFlash Flood WarningICTHarvey4 hr
Sep 17, 8:32 PM CDTSevere Thunderstorm WarningDDCStafford58 min
Sep 17, 8:59 PM CDTSevere Thunderstorm WarningICTBarton46 min
Sep 17, 9:13 PM CDTFlash Flood WarningICTBarton3 hr
Sep 17, 10:09 PM CDTSevere Thunderstorm WarningICTReno66 min
Sep 17, 10:35 PM CDTFlash Flood WarningICTRice6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 11.3 hours before the alert went out and 174 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, Lamont, OK at 12:00Z on 2001-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 677 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, Lamont, OK at 12:00Z on 2001-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 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
677 J/kg
Mixed-layer CIN
-143 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 17, 4:00 PM CDTSevere Thunderstorm WatchSPCClark, Comanche, Edwards, Ellis, Finney, Ford and 28 more5 hr

Nearby

Severe 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.