Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 57, NWS Kansas City, MO

May 23, 1998Chariton County, Macon County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 23, 1998, 8:27 PM CDT for Chariton County, Macon County, Missouri. It was in force for 48 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: May 23, 1998, 8:27 PM CDT (01:27 UTC)
Expired: May 23, 1998, 9:15 PM CDT
In force: 48 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Chariton County, MO, Macon County, MO

The radar

The Pleasant Hill radar (KEAX), 160 km from the middle of the area, began a volume at 01:29 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 23, 5:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.5 hours before the alert went out and 257 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: 1632 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 533 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

585 
WUUS1 KMCI 240129 RRA
SVRMCI
MOC041-121-240215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL KANSAS CITY MO
827 PM CDT SAT MAY 23 1998

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
     MACON COUNTY IN MISSOURI
     CHARITON COUNTY IN MISSOURI

* UNTIL 915 PM CDT

* AT 827 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES WEST OF BYNUMVILLE...MOVING NORTHEAST
  AT 30 MILES PER HOUR.

* THE SEVERE THUNDERSTORM WILL BE
     5 MILES WEST OF BYNUMVILLE AT 830 PM CDT
     3 MILES NORTH OF WIEN AT 845 PM CDT
     2 MILES SOUTHEAST OF NEW CAMBRIA AT 850 PM CDT      
     4 MILES NORTH OF CALLAO AT 905 PM CDT

PEOPLE IN THE PATH OF THIS STORM...CAN EXPECT HAIL UP TO ONE INCH IN 
DIAMETER...AND WIND GUSTS UP TO 60 MPH.

SEVERE THUNDERSTORMS CAN 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 3968 9285 3999 9281 4001 9241 3970 9234
          3965 9274 3941 9279 3934 9299 3961 9327
DB

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 May 23, 3:10 PM CDT, 5 hours 17 minutes earlier.

Area forecast discussion, May 23, 3:10 PM CDT, 5 hours 17 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
310 PM CDT SAT MAY 23 1998

AIRMASS ONCE AGAIN EXTREMELY UNSTABLE THIS PM. CNVCTN FIRING OVER
SRN MO WHERE CAP IS WEAKER. VSBL STLT IMAGERY SHOWS LEADING EDGE OF
SPEED MAX OVER WRN OK. XPCT CONVECTION FURTHER NORTH NEAR BOUNDARY
LATE THIS AFTERNOON/EVENING. PRIND ARE THAT CONVECTION SHOULD DIE
OFF AS SPEED MAX EXITS SOON AFTER MIDNIGHT BUT COULD CONTINUE INTO
ERY AM HOURS IF IT INITIATES FAR ENOUGH WEST.

ATMOSPHERE REMAINS UNSTABLE THROUGH PD...BUT WITH NO TRIGGERS TO BE
FOUND WILL WAIT ON SRN STREAM WV TO REINDRODUCE POPS. MOST ACTIVITY
SHOULD BE S OF CWA...BUT WL PUT IN LOW POPS ACRS CWA MONDAY FOR
AIRMASS CONVECTION.

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

JHV

In the hours before

Local storm report, May 23, 6:47 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
647 PM CDT SAT MAY 23 1998

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

0605 PM    5 N PERRIN                MO    .75 INCH HAIL
05/23/98   CLINTON

0620 PM    2 SW CAMERON              MO    .75 INCH HAIL
05/23/98   CLINTON

0625 PM    BRUNSWICK                 MO    .75 INCH HAIL
05/23/98   CHARITON

Local storm report, May 23, 6:47 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
647 PM CDT SAT MAY 23 1998

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

0605 PM    5 N PERRIN                MO    .75 INCH HAIL
05/23/98   CLINTON

0620 PM    2 SW CAMERON              MO    .75 INCH HAIL
05/23/98   CLINTON

0625 PM    BRUNSWICK                 MO    .75 INCH HAIL
05/23/98   CHARITON

Local storm report, May 23, 7:23 PM CDT, 1 hour 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
723 PM CDT SAT MAY 23 1998

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

0656 PM    CAMERON                   MO    .75 INCH HAIL
05/23/98   CLINTON

0700 PM    OSBORN                    MO    .75 INCH HAIL
05/23/98   DE KALB

Local storm report, May 23, 7:23 PM CDT, 1 hour 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
723 PM CDT SAT MAY 23 1998

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

0656 PM    CAMERON                   MO    .75 INCH HAIL
05/23/98   CLINTON

0700 PM    OSBORN                    MO    .75 INCH HAIL
05/23/98   DE KALB

Local storm report, May 23, 7:44 PM CDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
744 PM CDT SAT MAY 23 1998

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

0715 PM    LINNEUS                   MO    .75 INCH HAIL
05/23/98   LINN

Local storm report, May 23, 7:44 PM CDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
744 PM CDT SAT MAY 23 1998

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

0715 PM    LINNEUS                   MO    .75 INCH HAIL
05/23/98   LINN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:10 PM CDT	Severe Thunderstorm Warning	EAX	Linn	50 min
May 23, 7:50 PM CDT	Severe Thunderstorm Warning	EAX	Macon	40 min
May 23, 8:25 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Ray	45 min
May 23, 8:30 PM CDT	Severe Thunderstorm Warning	EAX	Daviess	30 min
May 23, 8:44 PM CDT	Severe Thunderstorm Warning	EAX	Livingston	61 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1998 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.