Alert archive / Missouri / Tornado Warnings in 1998

Tornado Warning 18, NWS Kansas City, MO

June 20, 1998Holt County, Missouri

NWS Kansas City, MO issued this tornado warning at Jun 20, 1998, 6:05 PM CDT for Holt County, Missouri. It was in force for 40 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: Jun 20, 1998, 6:05 PM CDT (23:05 UTC)
Expired: Jun 20, 1998, 6:45 PM CDT
In force: 40 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Holt County, MO

The radar

The Omaha radar (KOAX), 153 km from the middle of the area, began a volume at 23:06 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 nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.1 hours before the alert went out and 137 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: 2555 J/kg
Mixed-layer CIN: -270 J/kg
Mixed-layer LCL: 997 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

755 
WFUS1 KMCI 202306 RRA
TORMCI
MOC087-202345-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KANSAS CITY-PLEASANT HILL MO
605 PM CDT SAT JUN 20 1998

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* TORNADO WARNING FOR...
     NORTHERN HOLT COUNTY IN MISSOURI

* UNTIL 645 PM CDT

* AT 605 PM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR...INDICATED A
  DEVELOPING TORNADO 8 MILES WEST OF CORNING...OR ABOUT 13 MILES
  SOUTH OF ROCKPORT...MOVING EAST AT 25 MILES PER HOUR.

* THE TORNADO WILL BE...
     4 MILES SOUTHWEST OF CORNING AT 610 PM CDT
     2 MILES EAST OF CRAIG AT 630 PM CDT
     3 MILES NORTHEAST OF MOUND CITY AT 645 PM CDT

IF YOU ARE IN THE PATH OF THIS TORNADO...TAKE COVER IMMEDIATELY IN
THE BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF THE BUILDING

LAT...LON 4026 9549 4010 9537 4007 9511 4027 9513
          4026 9519

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 8:27 PM CDT	Severe Thunderstorm Warning	EAX	Cass	48 min
Jun 19, 10:12 PM CDT	Severe Thunderstorm Warning	EAX	Cooper	48 min
Jun 19, 10:45 PM CDT	Severe Thunderstorm Warning	EAX	Cass	45 min
Jun 19, 11:06 PM CDT	Severe Thunderstorm Warning	EAX	Bates	39 min
Jun 19, 11:34 PM CDT	Severe Thunderstorm Warning	EAX	Henry	41 min
Jun 19, 11:50 PM CDT	Severe Thunderstorm Warning	EAX	Bates	40 min
Jun 20, 12:06 AM CDT	Severe Thunderstorm Warning	EAX	Chariton, Randolph	39 min
Jun 20, 12:14 AM CDT	Severe Thunderstorm Warning	EAX	Henry	26 min
Jun 20, 12:33 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	42 min
Jun 20, 12:45 AM CDT	Severe Thunderstorm Warning	EAX	Randolph	45 min
Jun 20, 2:52 AM CDT	Severe Thunderstorm Warning	EAX	Carroll, Lafayette	38 min
Jun 20, 3:28 AM CDT	Severe Thunderstorm Warning	EAX	Carroll	47 min
Jun 20, 5:52 AM CDT	Severe Thunderstorm Warning	EAX	Harrison	38 min
Jun 20, 7:31 AM CDT	Severe Thunderstorm Warning	EAX	Howard	44 min
Jun 20, 7:57 AM CDT	Severe Thunderstorm Warning	EAX	Linn	48 min
Jun 20, 10:14 AM CDT	Severe Thunderstorm Warning	EAX	Johnson	46 min
Jun 20, 10:32 AM CDT	Flash Flood Warning	EAX	Johnson, Pettis	5 hr
Jun 20, 10:42 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	48 min
Jun 20, 11:13 AM CDT	Flash Flood Warning	EAX	Cooper, Howard	4 hr

Nearby

Tornado Warnings in Missouri, 1998 Every tornado warning in 1998 Tornadoes 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.