Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 164, NWS Kansas City, MO

June 23, 1998Henry County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 23, 1998, 1:31 AM CDT for Henry County, Missouri. It was in force for 44 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 23, 1998, 1:31 AM CDT (06:31 UTC)
Expired: Jun 23, 1998, 2:15 AM CDT
In force: 44 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Henry County, MO

What was reported inside it

Time	Report	Where	Remark
Jun 23, 2:00 AM CDT	Hail 0.75	Clinton, MO	A severe weather spotter reported dime-size hail on the south side of Clinton.

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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.5 hours before the alert went out and 163 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: 2624 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1425 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMCI 230631 RRA
SVRMCI
MOC083-230715-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
131 AM CDT TUE JUN 23 1998

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
     HENRY COUNTY IN MISSOURI

* UNTIL 215 AM CDT

* AT 127 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED...A
  SEVERE THUNDERSTORM 3 MILES NORTHEAST OF LA DUE...OR ABOUT 4 MILES
  SOUTHWEST OF CLINTON...MOVING EAST AT 25 MILES PER HOUR.

* THE SEVERE THUNDERSTORM WILL BE...
     OVER CLINTON AT 135 AM CDT
     NEAR LEWIS AT 145 AM CDT
     OVER CALHOUN AT 155 AM CDT
     
PEOPLE IN THE PATH OF THIS STORM...CAN EXPECT GOLVF BALL SIZE HAIL.  
FOR YOUR SAFETY...MOVE INDOORS...AND STAY AWAY FROM WINDOWS.

LAT...LON 3836 9400 3823 9383 3823 9359 3847 9352
          3855 9371
MJM

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 22, 4:05 PM CDT, 9 hours 26 minutes earlier.

Area forecast discussion, Jun 22, 4:05 PM CDT, 9 hours 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
405 PM CDT MON JUN 22 1998

VIS LOOP AND MTR DATA AT 2030 UTC SHWS 2 BNDRYS WHICH MAY BECM FOCUS
FOR CNVCTN LTR TNT. FIRST BNDRY ALG KS/NE BORDER APPRS TO BE MOST
LIKLEY AREA TO FIRE UP LTR THIS EVNG THEN ROLL SE ALG THICKNESS
GRADIENT TWRDS NW MO AFT MDNT. SEC BNDRY IS AREA OF CNVGNC OVR SE KS
WHICH DOES NOT APPR TO BE AS ACTIVE AS SUN PM. WILL GO WITH LIKELY
POPS FOR LTR TNT OVR WRN CWA THEN CHC POPS FOR TUE AM. IN XTRM ERN
CWA WILL KEEP POPS IN THRU MIDDAY TUE.

WILL NOT ISSUE FFA ATTM ALTHOUGH THERE MAY BE SOME LOCAL HVY RN OVR
RATHER LO FF GUIDANCE OVR WRN CWA. STILL SOME UNCERTAINTY AS TO
WHERE HEAVIEST RN WILL SET UP AND FEEL THAT MUCH OF R+ WILL FALL IN
SEC PRD ERLY TUE AM SO WILL HOLD OFF FOR NOW.

H8 WRM FNT WHICH REPRESENTS LEADING EDGE OF HOTTEST AIR STIL APPRS
TO BE OVR NRN OK AND HAS MADE LTL PROGESS TO N. THEREFORE WILL LWR
TEMPS TO UPR 80S OVR ALL ZNS FM CRNT 90-95. NXT SHRT WV FCST BY
MODELS TO MV FM SW U.S. INTO NRN PLNS TUE NITE WHICH ONLY APPRS TO
BE A THREAT TO XTRM NW MO ATTM HOWEVER WILL KEEP FCST DRY FOR NOW.
HOT AIR SHLD ARRIVE ON WED THEN PERSIST THRU THE REST OF WORK WEEK.
MADE NO XTND FCST CHGS.

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

BODNER

In the hours before

Local storm report, Jun 22, 11:31 PM CDT, 2 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1131 PM CDT MON JUN 22 1998

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

0106 AM    EDGERTON                  KS    65 MPH TSTM GUST
06/22/98   JOHNSON

Local storm report, Jun 22, 11:31 PM CDT, 2 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1131 PM CDT MON JUN 22 1998

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

0106 AM    EDGERTON                  KS    65 MPH TSTM GUST
06/22/98   JOHNSON

Local storm report, Jun 23, 1:10 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
110 AM CDT TUE JUN 23 1998

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

1220 AM    5 E CLINTON               MO    1.5 INCH HAIL
06/23/98   HENRY

Local storm report, Jun 23, 1:10 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
110 AM CDT TUE JUN 23 1998

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

1220 AM    5 E CLINTON               MO    1.5 INCH HAIL
06/23/98   HENRY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 12:36 AM CDT	Severe Thunderstorm Warning	EAX	Henry	39 min
Jun 23, 3:59 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	61 min
Jun 23, 4:49 AM CDT	Severe Thunderstorm Warning	EAX	Lafayette	41 min
Jun 23, 5:10 AM CDT	Severe Thunderstorm Warning	EAX	Carroll, Saline	50 min
Jun 23, 5:40 AM CDT	Severe Thunderstorm Warning	EAX	Chariton	50 min
Jun 23, 5:54 AM CDT	Flash Flood Warning	EAX	Clay, Jackson, Platte	3 hr
Jun 23, 5:54 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson	3 hr
Jun 23, 5:54 AM CDT	Severe Thunderstorm Warning	EAX	Platte	3 hr
Jun 23, 8:58 AM CDT	Flash Flood Warning	EAX	Clay, Platte	92 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.