Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 271, NWS Kansas City, MO

August 29, 2001Clay County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Aug 29, 2001, 8:40 PM CDT for Clay County, Missouri. It was in force for 50 min. No storm report in the archive falls 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.

The facts

Issued: Aug 29, 2001, 8:40 PM CDT (01:40 UTC)
Expired: Aug 29, 2001, 9:30 PM CDT
In force: 50 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Clay County, MO

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.7 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: 1904 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1877 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 20 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.

414 
WUUS53 KEAX 300140
SVRMCI
MOC047-300230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
840 PM CDT WED AUG 29 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 930 PM CDT

* AT 840 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LIBERTY...OR ABOUT 11 MILES NORTHEAST OF
  KANSAS CITY...MOVING NORTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KEARNEY AT 910 PM CDT

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE HAIL UP TO 1 INCH IN
DIAMETER...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.

LAT...LON 3919 9457 3925 9426 3943 9424 3944 9458

$$
PC

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 Aug 29, 2:30 PM CDT, 6 hours 10 minutes earlier.

Area forecast discussion, Aug 29, 2:30 PM CDT, 6 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
230 PM CDT WED AUG 29 2001

MAIN FOCUS FOR THIS FORECAST IS ON PRECIP CHANCES THURSDAY AND
FRIDAY...AND TEMPS OVER THE WEEKEND.

LATEST VISIBLE IMAGERY SHOWS CUMULUS BUBBLING ON SOUTHERN EDGE OF
THE FORECAST AREA THIS AFTERNOON...WITH STORMS POPPING TO THE
SOUTHEAST IN EASTERN SECTIONS OF THE SGF CWA. COLD FRONT REMAINS
WELL TO THE NORTH...EXTENDING FROM WEST CENTRAL MN TO NORTHEAST CO.

IN THE IMMEDIATE SHORT TERM...LEANING TOWARD NO POPS IN THE ZONES
TONIGHT...BUT WILL MAKE LAST MINUTE CALL ON THE SOUTHEAST
ZONES...AND WATCH FOR STORM DEVELOPMENT/MOVEMENT FROM ROLLA/LEBANON
AREA. BASED ON CURRENT DEWPOINT TRENDS...AND FRONT REMAINING NORTH
OF THE REGION...STILL LOOKS LIKE UPPER 60S TO AROUND 70 LOOK GOOD
FOR MINS TONIGHT.

SURFACE FRONT STILL PROGGED TO MOVE THROUGH THE FORECAST AREA
THURSDAY EVENING AND FRIDAY MORNING AS UPPER TROUGH SHIFTS INTO
GREAT LAKES REGION. NO HUGE DIFFERENCES SHOWING UP BETWEEN BASIC
MODEL FIELDS TODAY. WILL LEAN TOWARD THE AVN...WHICH HAS SLIGHTLY
FASTER MOVEMENT WITH THE FRONT...AND SEEMS TO BE DOING A BETTER JOB
WITH MOISTURE RETURN/QPF OUTPUT...AS IT PICKED UP ON PRECIP THIS
AFTERNOON TO THE SOUTH.

EVEN WITH FASTER MOVEMENT OF FRONT...WILL LAG POPS UNTIL THURSDAY
AFTERNOON FOR THE SOUTHERN ZONES...WITH LACK ON DECENT FORCING.
OTHERWISE...CHANCE POPS OVER THE ENTIRE AREA FOR THURSDAY NIGHT
STILL LOOK GOOD. ALSO...WILL TRIM POPS FROM THE NORTHERN ZONES FOR
FRIDAY...AND CONTINUE TREND OF TAPERING POPS ELSEWHERE ON FRIDAY.

LATEST MRF/ECMWF INDICATES JUST A BRIEF SHOT OF COOLER AIR THROUGH
THE WEEKEND BEFORE TEMPERATURES REBOUND SOME EARLY NEXT WEEK AS
WESTERLIES SHIFT BACK TO THE NORTH.

MAV TEMPS LOOK TOO LOW SO WILL TREND MORE TOWARD FWC NUMBERS FOR
EARLY PERIODS.

THANKS FOR COORDINATION SGF...

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

MMT/PC

In the hours before

Local storm report, Aug 29, 5:49 PM CDT, 2 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
549 PM CDT WED AUG 29 2001

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

0650 PM    DRESDEN                   MO   .75 INCH HAIL
08/29/01   PETTIS                         REPORTED BY EMERGENCY
                                          MANAGEMENT.

0650 PM    LA MONTE                  MO   .75 INCH HAIL
08/29/01   PETTIS                         REPORTED BY EMERGENCY
                                          MANAGEMENT.

0700 PM    5 N SEDALIA               MO   WIND DAMAGE
08/29/01   PETTIS                         3 TO 4 EIGHT INCH
                                          DIAMETER TREES DOWNED.
                                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

0730 PM    4 N ARCHIE                MO   .75 INCH HAIL
08/29/01   CASS                           REPORTED BY OFF-DUTY
                                          NWS EMPLOYEE.

0736 PM    1 W HARRISONVILLE         MO   1 INCH HAIL
08/29/01   CASS                           REPORTED BY PUBLIC.

0740 PM    LIBERTY                   MO   65 MPH TSTM GUST
08/29/01   CLAY                           REPORTED BY STORM
                                          SPOTTER.

0755 PM    LAKE LOTAWANA             MO   WIND DAMAGE
08/29/01   JACKSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0755 PM    LEES SUMMIT               MO   WIND DAMAGE
08/29/01   JACKSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0805 PM    GRAIN VLY                 MO   WIND DAMAGE
08/29/01   JACKSON                        REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0855 PM    EXCELSIOR SPGS            MO   WIND DAMAGE
08/29/01   CLAY                           TREE DOWN THROUGH ROOF
                                          OF HOUSE. REPORTED BY
                                          LAW ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 7:23 PM CDT	Severe Thunderstorm Warning	EAX	Cass	67 min
Aug 29, 7:47 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	58 min
Aug 30, 1:54 PM CDT	Severe Thunderstorm Warning	EAX	Platte	51 min
Aug 30, 2:03 PM CDT	Severe Thunderstorm Warning	EAX	DeKalb	27 min
Aug 30, 2:33 PM CDT	Severe Thunderstorm Warning	EAX	Clinton	42 min
Aug 30, 3:03 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	42 min
Aug 30, 4:16 PM CDT	Severe Thunderstorm Warning	EAX	Ray	44 min
Aug 30, 5:16 PM CDT	Severe Thunderstorm Warning	EAX	Chariton	44 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; the sounding from the Mesonet's radiosonde archive.