Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 202, NWS Kansas City, MO

June 29, 1998Macon County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 29, 1998, 8:30 PM CDT for Macon County, Missouri. It was in force for 30 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
Jun 29, 1998, 8:30 PM CDT (01:30 UTC)
Expired
Jun 29, 1998, 9:00 PM CDT
In force
30 min
Issued by
NWS Kansas City, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Macon County, MO

What was reported inside it

TimeReportWhereRemark
Jun 29, 8:45 PM CDTHail 1.75New Cambria, MOThe Macon Police department reported golfball-size hail during a severe thunderstorm 4 miles south of New Cambria.

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.

IssuedProductOfficeLasted
Jun 29, 4:15 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.5 hours before the alert went out and 267 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-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 1998-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2102 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 1998-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2102 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
2166 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
236 m²/s²
Significant tornado parameter
0.0
Supercell composite
20.8

Open this sounding in Storm Lab

The text

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

934 
WUUS1 KMCI 300132 RRA
SVRMCI
MOC121-300200-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
830 PM CDT MON JUN 29 1998

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
     SOUTHERN MACON COUNTY IN MISSOURI

* UNTIL 900 PM CDT

* AT 830 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED...A
  SEVERE THUNDERSTORM 6 MILES WEST OF NEW CAMBRIA...OR ABOUT 32 MILES
  SOUTHWEST OF KIRKSVILLE...MOVING SOUTHEAST AT 30 MILES PER HOUR.

* THE SEVERE THUNDERSTORM WILL BE...
     3 MILES SOUTH OF NEW CAMBRIA AT 835 PM CDT
     6 MILES SOUTH OF CALLAO AT 845 PM CDT
     7 MILES SOUTH OF LONG BRANCH STATE PARK AT 855 PM CDT
     12 MILES SOUTH OF MACON AT 910 PM CDT

PEOPLE IN THE PATH OF THIS STORM...CAN EXPECT HAIL UP TO ONE INCH IN 
DIAMETER...AND WIND GUSTS UP TO 75 MPH. FOR YOUR SAFETY...MOVE 
INDOORS...AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND DO PRODUCE 
TORNADOES...WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A 
PLACE OF SAFETY...IN A STURDY STRUCTURE...SUCH AS A BASEMENT...OR 
SMALL INTERIOR ROOM...IF A TORNADO IS SPOTTED.

LAT...LON 3985 9285 3971 9285 3971 9271 3963 9245
          3977 9246 3982 9270

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 Jun 29, 3:15 PM CDT, 5 hours 15 minutes earlier.

Area forecast discussion, Jun 29, 3:15 PM CDT, 5 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
315 PM CDT MON JUN 29 1998

LTL TIME FOR DISC AS SVR WX NEARS CWA. EXTREME NSTABILITY... STEEP
LAPSE RATES...CDFNT AND INCREASING MID LEVEL WNDS WILL PROVIDE FOR A
GOOD CHANCE OF SVR WX. WITH HI DWPTS AND CORRESPONDING HI PW AND LO
FFG VALUES...WL ISSUE FLASH FLOOD WATCH FOR TNGT FOR NRN 2/3RDS OF
CWA.

DRIER AND COOLER AIR TO ARRIVE LATE TNGT AND TUES WITH FWC GUID
GENERALLY FOLLOWED.IFT INTO 2ND PD FFA.

.EAX...
FLASH FLOOD WATCH
MO ZONES MOZ001>008-011>017-020>025-028>033-037>040-046
KS ZONES KSZ 102>105-025-

DB

In the hours before

Local storm report, Jun 29, 8:18 PM CDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
818 PM CDT MON JUN 29 1998

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

0743 PM    LIBERTY                   MO    90 MPH TSTM GUST
06/29/98   CLAY                            LIBERTY HOSPITAL DAMAGED

0807 PM    OLATHE                    KS    65 MPH TSTM GUST
06/29/98   JOHNSON                         65 MPH GUSTS ON HWY
                                           K-10 W OF OLATHE
Local storm report, Jun 29, 8:18 PM CDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
818 PM CDT MON JUN 29 1998

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

0743 PM    LIBERTY                   MO    90 MPH TSTM GUST
06/29/98   CLAY                            LIBERTY HOSPITAL DAMAGED

0807 PM    OLATHE                    KS    65 MPH TSTM GUST
06/29/98   JOHNSON                         65 MPH GUSTS ON HWY
                                           K-10 W OF OLATHE
Local storm report, Jun 29, 8:26 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
826 PM CDT MON JUN 29 1998

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

0735 PM    1 S KANSAS CITY INTL ARPT MO    67 MPH TSTM GUST
06/29/98   PLATTE                          TREES DOWN CARS BLOWN
                                           OF ROAD

0822 PM    DE SOTO                   KS    1.75 INCH HAIL
06/29/98   JOHNSON
Local storm report, Jun 29, 8:26 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
826 PM CDT MON JUN 29 1998

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

0735 PM    1 S KANSAS CITY INTL ARPT MO    67 MPH TSTM GUST
06/29/98   PLATTE                          TREES DOWN CARS BLOWN
                                           OF ROAD

0822 PM    DE SOTO                   KS    1.75 INCH HAIL
06/29/98   JOHNSON
Local storm report, Jun 29, 8:30 PM CDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
830 PM CDT MON JUN 29 1998

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

0822 PM    GARDNER                   KS    70 MPH TSTM GUST
06/29/98   JOHNSON

0830 PM    SOUTH ST JOSEPH           MO    80 MPH TSTM GUST
06/29/98   BUCHANAN                        SIGNIFICANT TREE AND
                                >           STRUCTURE DAMAGE
Local storm report, Jun 29, 8:30 PM CDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
830 PM CDT MON JUN 29 1998

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

0822 PM    GARDNER                   KS    70 MPH TSTM GUST
06/29/98   JOHNSON

0830 PM    SOUTH ST JOSEPH           MO    80 MPH TSTM GUST
06/29/98   BUCHANAN                        SIGNIFICANT TREE AND
                                >           STRUCTURE DAMAGE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 7:00 PM CDTTornado WarningEAXPlatte60 min
Jun 29, 7:03 PM CDTTornado WarningEAXAdair27 min
Jun 29, 7:28 PM CDTSevere Thunderstorm WarningEAXClay47 min
Jun 29, 7:40 PM CDTSevere Thunderstorm WarningEAXJackson60 min
Jun 29, 8:28 PM CDTSevere Thunderstorm WarningEAXJohnson62 min
Jun 29, 8:35 PM CDTSevere Thunderstorm WarningEAXCass40 min
Jun 29, 9:06 PM CDTSevere Thunderstorm WarningEAXBates54 min
Jun 29, 9:52 PM CDTFlash Flood WarningEAXMacon, Randolph3 hr
Jun 29, 10:39 PM CDTSevere Thunderstorm WarningEAXBates51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1998Every severe thunderstorm warning in 1998

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.