Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 295, NWS Kansas City, MO

September 7, 2001Grundy County, Sullivan County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Sep 7, 2001, 9:46 PM CDT for Grundy County, Sullivan County, Missouri. It was in force for 59 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, 9:46 PM CDT (02:46 UTC)
Expired: Sep 7, 2001, 10:45 PM CDT
In force: 59 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Grundy County, MO, Sullivan County, MO

What was reported inside it

Time	Report	Where	Remark
Sep 7, 9:49 PM CDT	Thunderstorm Wind 59 M	Trenton, MO	Power lines down throughout town.

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, 6:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.8 hours before the alert went out and 236 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: 2654 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 262 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 4.7
Supercell composite: 19.6

Open this sounding in Storm Lab

The text

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

294 
WUUS53 KEAX 080246
SVRMCI
MOC079-211-080345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
946 PM CDT FRI SEP 7 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRUNDY COUNTY IN NORTH CENTRAL MISSOURI
  THIS INCLUDES THE CITY OF TRENTON
  SULLIVAN COUNTY IN NORTH CENTRAL MISSOURI

* UNTIL 1045 PM CDT

* AT 946 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM TRENTON TO 13 MILES SOUTHEAST OF
  LAREDO...OR FROM 3 MILES NORTHWEST OF TRENTON TO 12 MILES EAST OF
  CHILLICOTHE...MOVING NORTHEAST AT 55 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SPICKARD AT 955 PM CDT
  OSGOOD AT 1000 PM CDT
  REGER AT 1005 PM CDT
  MILAN AT 1010 PM CDT
  BOYNTON AT 1015 PM CDT
  POLLOCK AT 1020 PM CDT

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 70
MPH. FOR YOUR SAFETY...MOVE INDOORS...AND STAY AWAY FROM WINDOWS.
REMEMBER...LIGHTNING IS A THREAT FROM ALL THUNDERSTORMS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
PLEASANT HILL.

LAT...LON 4038 9322 4038 9333 4026 9338 4026 9363
          4020 9368 4014 9375 4006 9375 3996 9362
          3997 9337 4005 9336 4004 9306 4028 9286
          4038 9286


$$

24

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 Sep 7, 4:55 PM CDT, 4 hours 51 minutes earlier.

Area forecast discussion, Sep 7, 4:55 PM CDT, 4 hours 51 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
455 PM CDT FRI SEP 7 2001

A DEEP TROUGH OVER THE CENTRAL UNITED STATES WILL PROVIDE ACTIVE
WEATHER FOR THE WEEKEND. THE FIRST OF A PAIR OF SHORTWAVES PASSED
THROUGH THE REGION LAST EVENING. TIMING THE SECOND WILL PROVIDE THE
MAIN FORECAST CHALLENGE FOR THIS PACKAGE.

MODELS INITIALIZED SIMILARLY...BUT DIFFERENCES ARISE IN HANDLING
THE STRENGTH AND SPEED OF THE SHORTWAVE DIVING INTO COLORADO. I GAVE
PREFERENCE TO THE AVIATION MODEL. THE FASTER...MORE OPEN SOLUTION
SHOULD VERIFY BETTER WITH A FAST NORTHERLY FLOW. THE KICKER FOR THE
SYSTEM WAIL BE A POTENT UPPER LOW CURRENTLY MOVING THROUGH NWRN
CANADA. THE FASTER SOLUTION SHOULD MEAN THAT THE THREAT OF SHOWERS
SHOULD END OVER NRN MO BY EARLY IN THE AFTERNOON ON SUNDAY.

AREAL COVERAGE FOR THE SHOWERS SHOULD BE PRETTY SUBSTANTIAL. THE
DEEP LAYER MOISTURE AND INSTABILITY AVAILABLE TO THE EVENT LAST
EVENING WILL BE SOUTH OF THE FORECAST AREA ON SUNDAY...BUT THE
VIGOROUS NATURE OF THE SYSTEM SHOULD ALLOW FOR GOOD COVERAGE. THE
RIGHT ENTRANCE REGION OF 100KT JET...STRONG CONVERGENCE OF
Q-VECTORS...AND A ISENTROPIC LIFT OVER THE FRONT AT 850MB SHOULD
COME TOGETHER EARLY SUNDAY MORNING. THE ONLY THING PREVENTING ME
FROM INSERTING CATEGORICAL POPS INTO THE SRN TIER IS TIMING. ARRIVAL
OF THE RAIN WILL LIKELY BE WITHIN A FEW HOURS OF SUNRISE. FOR THE
NWRN MO AND NERN KS DEEP LAYER MOISTURE IS NOT AS ABUNDANT...SO HIGH
CHANCE POPS WILL DO FOR NOW.

SUNDAY NIGHT WILL BE THE COOLEST NIGHT IN MONTHS. SKIES SHOULD BE
CLEAR FOR THE MAJORITY OF THE NIGHT. I PREFER THE COOLER AVIATION
GUIDANCE...AND UPPER 40S ARE POSSIBLE NORTH OF HIGHWAY 36 WITH A
COOL AND DRY AIRMASS HEADED THIS WAY.

NEXT WEEK LOOKS DRY. LOW LEVEL MOISTURE FROM THE GULF WILL BE SLOW
TO RETURN. MRF PROGS 850MB FLOW OUT OF THE NW THROUGH THURS. HAVE
MADE NO CHANGES TO THE EXTENDED.

.EAX...
KS...NONE.
MO...NONE.

KOCH

In the hours before

Local storm report, Sep 7, 8:23 PM CDT, 1 hour 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
823 PM CDT FRI SEP 07 2001

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

0823 PM    RAYMORE                   MO   70 MPH TSTM GUST
09/07/01   CASS                           REPORTED BY HAM RADIO
                                          OPERATOR.

Local storm report, Sep 7, 8:28 PM CDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
828 PM CDT FRI SEP 07 2001

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

0825 PM    OAKWOOD                   MO   60 MPH TSTM GUST
09/07/01   CLAY                           REPORTED BY HAM RADIO
                                          OPERATOR.

Local storm report, Sep 7, 8:33 PM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
833 PM CDT FRI SEP 07 2001

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

0827 PM    ADRIAN                    MO   WIND DAMAGE
09/07/01   BATES                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.
                                          LOTS OF TREES DOWN.

0829 PM    3 NW PLEASANT HILL        MO   65 MPH TSTM GUST
09/07/01   CASS                           REPORTED BY STORM
                                          SPOTTER.

0830 PM    LEES SUMMIT               MO   70 MPH TSTM GUST
09/07/01   JACKSON                        REPORTED BY STORM
                                          SPOTTER.

0830 PM    PLEASANT HILL             MO   61 MPH TSTM GUST
09/07/01   CASS                           NWS WEATHER OFFICE

Local storm report, Sep 7, 8:57 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
857 PM CDT FRI SEP 07 2001

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

0810 PM    6 NE OSAWATOMIE           KS   .75 INCH HAIL
09/07/01   MIAMI                          DIME SIZED HAIL.
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0815 PM    KANSAS CITY               KS   60 MPH TSTM GUST
09/07/01   WYANDOTTE                      AT PEARSON PARK.
                                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

0825 PM    KANSAS CITY               MO   65 MPH TSTM GUST
09/07/01   CLAY                           NEAR 169 HWY AND BARRY
                                          RD. REPORTED BY STORM
                                          SPOTTER.

0830 PM    (MKC)KS CITY DNTN ARPT    MO   59 MPH TSTM GUST
09/07/01   JACKSON                        FROM ASOS

0840 PM    INDEPENDENCE              MO   70 MPH TSTM GUST
09/07/01   JACKSON                        SEVERAL POWER POLES
                                          DOWN AROUND I-470, 291
                                          HWY, 40 HWY, 70 MPH
                                          WINDS ON EAST SIDE OF
                                          TOWN, AND SEMI TRAILER
                                          TRUCK BLOWN OVER AT
                                          I-70 AND BLUE PARKWAY.
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Special weather statement, Sep 7, 9:30 PM CDT, 16 minutes before

KSZ025-057-060-102>105-MOZ001-011-012-020-021-028>030-037-043-053-
080330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
930 PM CDT FRI SEP 7 2001

...THE TORNADO WATCH NUMBER 718 IN EFFECT UNTIL 11 PM HAS BEEN
CANCELLED FOR THE FOLLOWING COUNTIES...

IN KANSAS...
DONIPHAN...ATCHISON...LEAVENWORTH...WYANDOTTE...JOHNSON...MIAMI...
AND LINN.

IN MISSOURI...
ATCHISON...HOLT...ANDREW...BUCHANAN...CLINTON...PLATTE...CLAY...
RAY...JACKSON...CASS...AND BATES.

PC

Local storm report, Sep 7, 9:32 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
932 PM CDT FRI SEP 07 2001

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

0821 PM    RAYMORE                   MO   62 MPH TSTM GUST
09/07/01   CASS                           MEASURED. CONSIDERABLE
                                          POWER OUTAGE IN
                                          RAYMORE. REPORTED BY
                                          COOPERATIVE OBSERVER.

0856 PM    1 S WOOD HGTS             MO   NON TSTM WINDS
09/07/01   RAY                            SMALL BUILDING BLOWN
                                          AWAY AND WINDOWS IN
                                          HOME BLOWN OUT.
                                          REPORTED BY PUBLIC.

0900 PM    WARRENSBURG               MO   60 MPH TSTM GUST
09/07/01   JOHNSON                        NUMEROUS TREE LIMBS
                                          DOWN ACROSS
                                          WARRENSBURG.  POWER HAD
                                          BEEN OUT IN CHILLHOWEE
                                          AND WAS STILL OUT IN
                                          LEETON. REPORTED BY
                                          EMERGENCY MANAGEMENT.

0904 PM    HIGGINSVILLE              MO   81 MPH TSTM GUST
09/07/01   LAFAYETTE                      MEASURED AT
                                          HIGGINSVILLE WATER
                                          PLANT. REPORTED BY
                                          COOPERATIVE OBSERVER.

0915 PM    KEARNEY                   MO   WIND DAMAGE
09/07/01   CLAY                           SEVERAL LARGE TREES
                                          DOWN, GAS STATION SIGNS
                                          BLOWN DOWN IN TOWN.
                                          REPORTED BY FIRE AND
                                          RESCUE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 7, 8:03 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	57 min
Sep 7, 8:03 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	57 min
Sep 7, 8:14 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Platte	46 min
Sep 7, 8:32 PM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson	73 min
Sep 7, 8:32 PM CDT	Severe Thunderstorm Warning	EAX	Lafayette	73 min
Sep 7, 8:34 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell	41 min
Sep 7, 8:43 PM CDT	Severe Thunderstorm Warning	EAX	Ray	62 min
Sep 7, 9:08 PM CDT	Severe Thunderstorm Warning	EAX	Carroll	82 min
Sep 7, 9:14 PM CDT	Severe Thunderstorm Warning	EAX	Pettis, Saline	76 min
Sep 7, 9:31 PM CDT	Severe Thunderstorm Warning	EAX	Livingston	44 min
Sep 7, 9:37 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Linn	53 min
Sep 7, 10:03 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	72 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.