Alert archive / Kansas / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 143, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Jun 20, 1998, 8:39 PM CDT for Johnson County, Leavenworth County, Wyandotte County, Kansas. It was in force for 36 min. 3 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, 8:39 PM CDT (01:39 UTC)
- Expired
- Jun 20, 1998, 9:15 PM CDT
- In force
- 36 min
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties
Counties Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 8:50 PM CDT | Thunderstorm Wind | Leavenworth, KS | Severe thunderstorm winds blew trees down onto a transformer causing a fire at Leavenworth. Thunderstorm winds in Jarbalo took the roof off a barn and blew down a grain bin. |
| Jun 20, 8:55 PM CDT | Hail 0.88 | Bonner Spgs, KS | Wyandotte County Emergency Management reported nickel-size hail at Bonner Springs. |
| Jun 20, 9:01 PM CDT | Hail 1.75 | Shawnee, KS | A severe thunderstorm produced large hail over much of Johnson County. Golfball-size hail was reported by local police along I-35 between I-435 and 95th Street. Further south dime to quarter-size hail was reported in Overland Park at 91st and Nall, in Stanley |
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 20, 7:15 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 1.7 hours before the alert went out and 67 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.
- Mixed-layer CAPE
- 4942 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 337 m²/s²
- 0-3 km storm-relative helicity
- 629 m²/s²
- Significant tornado parameter
- 13.7
- Supercell composite
- 52.8
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, 17 hours 49 minutes earlier.
Area forecast discussion, Jun 20, 2:50 AM CDT, 17 hours 49 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, 5:39 PM CDT, 3 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
539 PM CDT SAT JUN 20 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0300 AM 7 SW NORBORNE MO .88 INCH HAIL
06/20/98 CARROLL
0300 AM 10 SW NORBORNE MO 1 INCH HAIL
06/20/98 CARROLL
0335 AM 4 ESE ROADS MO .88 INCH HAIL
06/20/98 CARROLL
0810 AM FOUNTAIN GROVE MO .88 INCH HAIL
06/20/98 LINN JUST NORTHEAST OF
FOUNTAIN GROVE WILDLIFE.
1030 AM 5 NE LEETON MO 1 INCH HAIL
06/20/98 JOHNSON
1030 AM 5 NE LEETON MO WIND DAMAGE
06/20/98 JOHNSON POWER LINES DOWN. TREES
DOWN ON ROADWAYLocal storm report, Jun 20, 5:39 PM CDT, 3 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
539 PM CDT SAT JUN 20 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0300 AM 7 SW NORBORNE MO .88 INCH HAIL
06/20/98 CARROLL
0300 AM 10 SW NORBORNE MO 1 INCH HAIL
06/20/98 CARROLL
0335 AM 4 ESE ROADS MO .88 INCH HAIL
06/20/98 CARROLL
0810 AM FOUNTAIN GROVE MO .88 INCH HAIL
06/20/98 LINN JUST NORTHEAST OF
FOUNTAIN GROVE WILDLIFE.
1030 AM 5 NE LEETON MO 1 INCH HAIL
06/20/98 JOHNSON
1030 AM 5 NE LEETON MO WIND DAMAGE
06/20/98 JOHNSON POWER LINES DOWN. TREES
DOWN ON ROADWAYLocal storm report, Jun 20, 8:03 PM CDT, 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
803 PM CDT SAT JUN 20 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0740 PM EFFINGHAM KS WIND DAMAGE
06/20/98 ATCHISON POWER LINES DOWNLocal storm report, Jun 20, 8:03 PM CDT, 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
803 PM CDT SAT JUN 20 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0740 PM EFFINGHAM KS WIND DAMAGE
06/20/98 ATCHISON POWER LINES DOWNThe office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:02 PM CDT | Severe Thunderstorm Warning | EAX | Platte | 43 min |
| Jun 20, 8:57 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Platte | 48 min |
| Jun 20, 8:57 PM CDT | Severe Thunderstorm Warning | EAX | Jackson | 48 min |
| Jun 20, 9:40 PM CDT | Severe Thunderstorm Warning | EAX | Cass, Jackson | 35 min |
| Jun 20, 10:13 PM CDT | Severe Thunderstorm Warning | EAX | Cass | 47 min |
| Jun 20, 10:35 PM CDT | Severe Thunderstorm Warning | EAX | Henry, Johnson | 40 min |
| Jun 20, 7:10 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 50 min |
| Jun 20, 9:13 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Wyandotte | 47 min |
| Jun 20, 9:52 PM CDT | Severe Thunderstorm Warning | EAX | Leavenworth | 38 min |
Nearby
Severe Thunderstorm Warnings in Kansas, 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.