Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 77, NWS Kansas City, MO

April 14, 2001Cass County, Jackson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 14, 2001, 9:38 PM CDT for Cass County, Jackson County, Missouri. It was in force for 52 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: Apr 14, 2001, 9:38 PM CDT (02:38 UTC)
Expired: Apr 14, 2001, 10:30 PM CDT
In force: 52 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Cass County, MO, Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 2 km from the middle of the area, began a volume at 02:38 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, 9:49 PM CDT	Hail 1.75	Drexel, MO	Law enforcement reported 70 mph wind gusts and 1 3/4 inch hail.

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, 6:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.6 hours before the alert went out and 119 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

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

000 
WUUS53 KEAX 150238
SVRMCI
MOC037-095-150330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
938 PM CDT SAT APR 14 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN WEST CENTRAL MISSOURI
  THIS INCLUDES THE CITY OF HARRISONVILLE
  SOUTHEASTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 1030 PM CDT

* AT 938 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM LAKE LOTAWANA TO FREEMAN...OR
  FROM 20 MILES SOUTHEAST OF KANSAS CITY TO 13 MILES WEST OF
  HARRISONVILLE...MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  OAK GROVE AT 945 PM CDT
  HARRISONVILLE AT 950 PM CDT
  ARCHIE AT 1000 PM CDT
  GUNN CITY AT 1005 PM CDT
  GARDEN CITY AT 1010 PM CDT
  DAYTON AT 1015 PM CDT

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE DIME SIZE HAIL...AND
WINDS IN EXCESS OF 60 MPH. FOR YOUR SAFETY...MOVE INDOORS AND STAY
AWAY FROM WINDOWS. REMEMBER...LIGHTNING IS A THREAT FROM ALL
THUNDERSTORMS. HEAVY RAINS CAN CAUSE LOCALIZED FLOODING OF LOW LYING
AREAS.

A TORNADO WATCH ISy ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 3904 9427 3848 9462 3847 9413 3904 9412

BUNTING

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, 5 hours 21 minutes earlier.

Area forecast discussion, Apr 14, 4:17 PM CDT, 5 hours 21 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, 8:37 PM CDT, 1 hour 1 minute before

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

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

0831 PM    7 SE ODESSA               MO   .88 INCH HAIL
04/14/01   LAFAYETTE                      REPORTED BY COOPERATIVE
                                          OBSERVER.

Local storm report, Apr 14, 8:51 PM CDT, 47 minutes before

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

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

0831 PM    7 W LINWOOD               KS   1 INCH HAIL
04/14/01   LEAVENWORTH                    REPORTED BY EMERGENCY
                                          MANAGEMENT.

0842 PM    1 NW WARRENSBURG          MO   70 MPH TSTM GUST
04/14/01   JOHNSON                        REPORTED BY EMERGENCY
                                          MANAGEMENT.

0843 PM    5 N WARRENSBURG           MO   .88 INCH HAIL
04/14/01   JOHNSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0845 PM    2 SW SHAWNEE              KS   .75 INCH HAIL
04/14/01   JOHNSON                        REPORTED BY FIRE AND
                                          RESCUE.

Local storm report, Apr 14, 8:59 PM CDT, 39 minutes before

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

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

0854 PM    LINWOOD                   KS   .75 INCH HAIL
04/14/01   LEAVENWORTH                    REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Apr 14, 9:05 PM CDT, 33 minutes before

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

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

0855 PM    KNOB NOSTER               MO   80 MPH TSTM GUST
04/14/01   JOHNSON                        REPORTED BY STORM
                                          SPOTTER. CARS BLOWN OFF
                                          THE ROAD.

Local storm report, Apr 14, 9:26 PM CDT, 12 minutes before

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

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

0925 PM    KANSAS CITY               MO   1 INCH HAIL
04/14/01   JACKSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Apr 14, 9:35 PM CDT, 3 minutes before

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

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

0930 PM    GARDNER                   KS   .75 INCH HAIL
04/14/01   JOHNSON                        REPORTED BY OFF-DUTY
                                          NWS EMPLOYEE.

0930 PM    7 S GARDNER               KS   .75 INCfH HAIL
04/14/01   MIAMI

0930 PM    7 S GARDNER               KS   70 MPH TSTM GUST
04/14/01   MIAMI

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:25 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	50 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, 9:40 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 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.