Alert archive / Kansas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 72, NWS Kansas City, MO

April 14, 2001Johnson County, Wyandotte County, Kansas; Jackson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 14, 2001, 7:25 PM CDT for Johnson County, Wyandotte County, Kansas; Jackson County, Missouri. It was in force for 50 min. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 14, 2001, 7:25 PM CDT (00:25 UTC)
Expired: Apr 14, 2001, 8:15 PM CDT
In force: 50 min
Issued by: NWS Kansas City, MO
Area: Whole counties

Counties Johnson County, KS, Wyandotte County, KS, Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 39 km from the middle of the area, began a volume at 00:28 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
Apr 14, 7:45 PM CDT	Hail 0.75	Raytown, MO
Apr 14, 7:45 PM CDT	Thunderstorm Wind 75 M	Unity Vlg, MO	Wind gusts to 86 mph were recorded at Unity Village. A large plate glass window was destroyed, on the 4th floor of the main building. A 11/2 foot diameter tree was blown over as well as numerous smaller trees.
Apr 14, 7:45 PM CDT	Thunderstorm Wind 52 M	Kansas City, MO
Apr 14, 7:50 PM CDT	Thunderstorm Wind 61 M	Lees Summit, MO	Wind gusts to 70 mph were observed at the Lee's Summit airport. A large wall was blown off a new building at the airport.
Apr 14, 8:09 PM CDT	Thunderstorm Wind 52 E	Shawnee, KS

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
Apr 14, 3:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 14, 6:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.4 hours before the alert went out and 86 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: 16 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 866 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 226 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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 14, 4:17 PM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Apr 14, 4:17 PM CDT, 3 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
417 PM CDT SAT APR 14 2001

TSRA HAVE FORMED ALONG H8 FRONTAL BOUNDARY AND SLIDING INTO WRN CWA.
THIS WILL BE THE FIRST CONCERN. SURGING SFC BOUNDARY FROM THE SOUTH
WILL BE THE NEXT ONE LATER THIS EVENING. SHTWV COMING OUT OF THE
ROCKIES IS THE INSTIGATOR. MOISTURE FINALLY RETURNING WILL LIGHT UP
THE SFC BOUNDRY.

SHTWV MOVES THRU PRETTY QUICK WITH DOWNWARD MOTION BY 12Z. MAY SEE
SOME REMAINING SHOWERS LEAVING ERN CWA EARLY.  ONLY OTHER THING TO
LOOK AT WAS THE CHC OF RAIN ON MONDAY. 300K ISENTROPIC LIFT PRETTY
DECENT IN THE WRN ZONES...AND HAVE ADDED CHC OF RAIN. MDLS STILL IN
AGREEMENT WITH COLD TEMPS COME DOWN AHEAD OF SFC HIGH. HAVE GENRLY
GONE WITH MAV GUID TEMPS.

NXT CHC FOR PCPN LOOKS TO BE SAT IN THE EXTENDED.

.EAX...NONE

LVQ

In the hours before

Local storm report, Apr 14, 7:08 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
708 PM CDT SAT APR 14 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY< LOCATION....

0700 PM    2 W DE SOTO               KS   .75 INCH HAIL
04/14/01   JOHNSON                        REPORTED BY EMERGENCY
                                          MANAGEMENT.

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 14, 8:17 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Wyandotte	58 min
Apr 14, 9:22 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	53 min
Apr 14, 7:50 PM CDT	Tornado Warning	EAX	Jackson	40 min
Apr 14, 8:10 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette	65 min
Apr 14, 8:59 PM CDT	Severe Thunderstorm Warning	EAX	Pettis, Saline	61 min
Apr 14, 9:38 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	52 min
Apr 14, 9:40 PM CDT	Flash Flood Warning	EAX	Johnson, Lafayette	4 hr
Apr 14, 9:49 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	56 min
Apr 14, 10:01 PM CDT	Severe Thunderstorm Warning	EAX	Bates	44 min
Apr 14, 10:20 PM CDT	Severe Thunderstorm Warning	EAX	Henry	55 min
Apr 14, 10:35 PM CDT	Severe Thunderstorm Warning	EAX	Pettis	55 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2001 Severe Thunderstorm Warnings in Missouri, 2001 Every severe thunderstorm warning 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.