Alert archive / Kansas / Tornado Warnings in 2001

Tornado Warning 16, NWS Topeka, KS

September 7, 2001Geary County, Riley County, Kansas

NWS Topeka, KS issued this tornado warning at Sep 7, 2001, 5:41 PM CDT for Geary County, Riley County, Kansas. It was in force for 34 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Sep 7, 2001, 5:41 PM CDT (22:41 UTC)
Expired: Sep 7, 2001, 6:15 PM CDT
In force: 34 min
Issued by: NWS Topeka, KS
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Geary County, KS, Riley County, KS

The radar

The Topeka radar (KTWX), 60 km from the middle of the area, began a volume at 22:41 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.

What was reported inside it

Time	Report	Where	Remark
Sep 7, 6:00 PM CDT	Tornado F0	Ogden, KS	A tornado touched down briefly over open areas of Fort Riley damaging some trees.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Sep 7, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 7, 4:45 PM CDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.7 hours before the alert went out and 108 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1545 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 658 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

050 
WFUS53 KTOP 072241
TORTOP
KSC061-161-072315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
541 PM CDT FRI SEP 7 2001

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN GEARY COUNTY IN EAST CENTRAL KANSAS
  CENTRAL RILEY COUNTY IN NORTHEAST KANSAS

* UNTIL 615 PM CDT

* AT 538 PM CDT...WEATHER SPOTTERS REPORTED A LARGE TORNADO 3
  MILES SOUTHWEST OF MILFORD LAKE...OR ABOUT 9 MILES NORTHWEST OF 
  JUNCTION CITY...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED...
  MILFORD
  RILEY
  FORT RILEY
  KEATS

THIS EXTENDS THE TORNADO WARNING FOR NORTHWESTERN GEARY COUNTY.

THIS IS AN EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING
SITUATION. IF YOU ARE IN THE PATH OF THIS LARGE AND DESTRUCTIVE
TORNADO...TAKE COVER IMMEDIATELY.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.

LAT...LON 3925 9695 3906 9695 3919 9667 3938 9677

$$

58

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 7, 4:54 AM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	51 min
Sep 7, 5:47 AM CDT	Severe Thunderstorm Warning	TOP	Nemaha	28 min
Sep 7, 4:26 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Washington	34 min
Sep 7, 4:41 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie	34 min
Sep 7, 4:53 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Republic	67 min
Sep 7, 5:01 PM CDT	Tornado Warning	TOP	Dickinson	44 min
Sep 7, 5:13 PM CDT	Tornado Warning	TOP	Clay, Geary	32 min
Sep 7, 5:44 PM CDT	Tornado Warning	TOP	Dickinson	46 min
Sep 7, 5:56 PM CDT	Severe Thunderstorm Warning	TOP	Republic	49 min
Sep 7, 6:15 PM CDT	Tornado Warning	TOP	Pottawatomie, Riley	30 min
Sep 7, 6:46 PM CDT	Severe Thunderstorm Warning	TOP	Washington	14 min
Sep 7, 6:48 PM CDT	Severe Thunderstorm Warning	TOP	Anderson, Coffey	42 min

Nearby

Tornado Warnings in Kansas, 2001 Every tornado warning in 2001 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.