Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 134, NWS Kansas City, MO

June 20, 1998Carroll County, Lafayette County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 20, 1998, 2:52 AM CDT for Carroll County, Lafayette County, Missouri. It was in force for 38 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 20, 1998, 2:52 AM CDT (07:52 UTC)
Expired: Jun 20, 1998, 3:30 AM CDT
In force: 38 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Carroll County, MO, Lafayette County, MO

What was reported inside it

Time	Report	Where	Remark
Jun 20, 3:15 AM CDT	Hail 1	Norborne, MO	The Carroll county Sheriff's office reported dime to quarter-size hail in Norborne.
Jun 20, 3:35 AM CDT	Hail 0.88	Roads, MO	Nickel-size hail was reported by the public 4 miles southeast of Roads.

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.

Issued	Product	Office	Lasted
Jun 19, 10:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 7.9 hours before the alert went out and 174 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: 948 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2347 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 20, 2:50 AM CDT, 2 minutes earlier.

Area forecast discussion, Jun 20, 2:50 AM CDT, 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
250 AM CDT SAT JUN 20 1998

CALENDAR AND VERY WARM TEMPS REMIND ME THAT IS INDEED LATE JUN
THOUGH PATTERN SURE LOOKS A LOT MORE LIKE LATE MAY.  TSRA CHCS THE
MAIN CONCERN THROUGHOUT.

LAST VESTIGES OF IMPRESSIVE WAA ACTIVITY SHD BE EXITING ERN ZONES BY
ISSUANCE TIME THOUGH WILL HAVE TO WATCH SOME REDEVELOPMENT JUST EAST
OF KC.  700 MB TEMPS WARM CONSIDERABLY TODAY WHICH SHD EFFECTIVELY
CAP EXTREMELY UNSTABLE AIRMASS UNTIL SHORT WAVE TROF AND FRONT
ARRIVE LATE IN DAY.

BY 00Z...NICE LOOKING PV LOBE ARRIVES FROM W ALONG WITH SIGNIFICANT
COOLING AT 700 AND 500 MB WHICH SHOULD ALLOW FOR EXPLOSIVE
DEVELOPMENT ALONG FRONT MOVING INTO NW MO.  THINK OUTFLOW BOUNDARY
FROM CURRENT MCS SHOULD WASH OUT DURING DAY AND WITH CAP IN
PLACE...THINK ONLY CHC FOR SEEING ANY DVLPMT DURING 1ST PD WILL BE
IN NW MO ALG FRONT.  WITH CAPES IN EXCESS OF 4K...DECENT SHEAR AND
AT LEAST 40 KT MID LEVEL WINDS...BELIEVE TONIGHT WILL BE ANOTHER
BUSY NIGHT...IF NOT BUSIER.  BETTER TORNADIC THREAT PROBABLY UP
INTO IA IN SPCS MDT RISK...BUT WITH VERY HI CAPES...CANT COUNT THE
THREAT OUT.  WILL MENTION IN AM SPS.

ALSO WITH VERY HI PWS...DAY SHIFT WILL NEED TO CONSIDER FFW
(PARTICULARLY FOR NW COUNTIES WHERE THINGS ARE STILL PRETTY
WET)...DONT WANT TO TIE THEIR HANDS YET.  ANOTHER THING TO MENTION
IN THE HAZ WX OUTLOOK.

ETA SHOWS BOUNDARY PUTTING ON THE BRAKES SOMEWHERE ACRSS SRN ZONES
FOR SUN.  WITH CAP ALL BUT GONE...WILL HAVE TO ADD DAYTIME POPS FOR
SUN.

FINALLY...FWC TEMPS LOOK WAY TOO COOL FOR TODAY.  PLAN ON RAISING
GOING FCST A CAT...AND THAT MAY EVEN BE TOO COOL AFTER LOOKING AT
FCST 850 TEMPS.  WITH TEMPS IN M90S AND DWPTS 70-75 HEAT INDEXES
WILL LIKELY MEET OR EXCEED DAYTIME HEAT ADVISORY CRIT DURING AFTN.
SHOLD DROP BELOW CRITERIA TONIGHT THOUGH.

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

JM

In the hours before

Local storm report, Jun 20, 12:30 AM CDT, 2 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1230 AM CDT SAT JUN 20 1998

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

1222 AM    RICH HILL                 MO    1 INCH HAIL
06/20/98   BATES

JULY

Local storm report, Jun 20, 12:37 AM CDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1237 AM CDT SAT JUN 20 1998

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

1223 AM    (SZL)WHITEMAN AFB         MO    70 MPH TSTM GUST
06/20/98   JOHNSON                         WIND GUST TO 61 KT

JULY

Local storm report, Jun 20, 12:37 AM CDT, 2 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1237 AM CDT SAT JUN 20 1998

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

1223 AM    (SZL)WHITEMAN AFB         MO    70 MPH TSTM GUST
06/20/98   JOHNSON                         WIND GUST TO 61 KT

JULY

Local storm report, Jun 20, 1:05 AM CDT, 1 hour 47 minutes before

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Local storm report, Jun 20, 1:05 AM CDT, 1 hour 47 minutes before

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Special weather statement, Jun 20, 1:25 AM CDT, 1 hour 27 minutes before

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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, 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
Jun 20, 6:05 PM CDT	Tornado Warning	EAX	Holt	40 min
Jun 19, 9:49 PM CDT	Severe Thunderstorm Warning	EAX	Linn	41 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.