Alert archive / Kansas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 81, NWS Kansas City, MO

May 21, 2000Johnson County, Wyandotte County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at May 21, 2000, 2:35 PM CDT for Johnson County, Wyandotte County, Kansas. It was in force for 40 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: May 21, 2000, 2:35 PM CDT (19:35 UTC)
Expired: May 21, 2000, 3:15 PM CDT
In force: 40 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Johnson County, KS, Wyandotte County, KS

The radar

The Pleasant Hill radar (KEAX), 48 km from the middle of the area, began a volume at 19:38 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.

What was reported inside it

Time	Report	Where	Remark
May 21, 3:15 PM CDT	Hail 1.5	Overland Park, KS	The same thunderstorm that produced large hail in Kansas City, KS continued south-southeast into Johnson County, tracking from Merriam across Overland Park, and into Leawood. Numerous reports of hail were received, with hail size ranging from pea size to ping

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

Topeka, KS (KTOP), launched 12:00Z, 7.6 hours before the alert went out and 76 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: 18 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 1217 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

150 
WUUS53 KEAX 211935
SVRMCI
KSC091-209-212015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
235 PM CDT SUN MAY 21 2000

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JOHNSON COUNTY IN EAST CENTRAL KANSAS
  THIS INCLUDES THE CITY OF OLATHE
  WYANDOTTE COUNTY IN NORTHEAST KANSAS

* UNTIL 315 PM CDT

* AT 233 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER MERRIAM...OR ABOUT 10 MILES NORTHEAST OF
  OLATHE...MOVING SOUTH AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LEAWOOD AT 240 PM CDT
  STANLEY AT 245 PM CDT

LAT...LON 3918 9484 3876 9491 3874 9461 3910 9463

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 21, 3:00 AM CDT, 11 hours 35 minutes earlier.

Area forecast discussion, May 21, 3:00 AM CDT, 11 hours 35 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
300 AM CDT SUN MAY 21 2000

88D SHOWING THE NICE LINE OF SHRA RAPIDLY DISSIPATING AS SOON AS IT
REACHES WRN EDGE OF CWA. RAIN DANCE DIDNT HELP. NW FLOW LOOKS TO
KEEP THE WEAK IMPULSES MOVG ACROSS THRU AT LEAST TUES. FCST
CHALLENGE IS PER USUAL TEMPS AND WHEN TO ADD POPS.

FM SFC MAP AND PROFILES...LOOKS LIKE FRNT STILL REMAINS WEST BHND
THE TEASING LINE OF CONVECTION. IR SAT CONFIRMS THIS THOUGHT WITH
SECONDARY CLD LINE. ANY SCT SPITS OF PCPN MOVG ACROSS WRN ZONES SHUD
END BEFORE 12Z THIS MORNING. AND WHEN ACTUAL FRNT MVS THRU THE WEST...
INSTABILITY LITTLE TO NONE FOR ANYTHING TO GENERATE. HOWEVER...WILL
RETAIN POPS ALREADY IN PLACE FOR THE ERN CWA. INSTABILITY AXIS FROM
NE TO SW CORNER OF MO ALONG WITH MOISTURE POOL ALONG FRNT MAY BE
ENUF EVEN THO H8 FLOW STILL WEAK...THEREFOR WAA LOW TO DO MUCH. IN
LINE WITH GUID...GOING FCST HAS HIGHS TDY COVERED. WARMER IN
WEST...COOLER IN EAST W/MORE CLDS.

GET TO PLAY SAME GAME AGAIN ON MONDAY. ANOTHER WEAK IMPULSE ALOFT
WITH ACCOMPANYING SFC FEATURE LATE TONITE/EARLY MON MORNING. THIS
TIME THE SHTWV LOOKS A BIT WEAKER AND FARTHER NORTH...WITH BETTER
MOISTURE AND INSTABILITY PARAMETERS TO THE SOUTH. SO FOR NOW...WILL
GO SILENT 20 AND NOT INTRODUCE POPS FOR SUN NITE/MON AM.  TIME
SECTIONS SHOW MID AND HIGH LEVEL CLDS OVERNITE. THIS SHUD KEEP SUN
NITE LOW TEMPS IN THE MID 50S WITH WEAK WAA. AVN TRIES TO SPEED UP
THE STRENGTH OF WAA THRU THE REST OF THE RUN. FEEL THAT IT MAY BE A
BIT SPEEDY...BUT FWC HAS ALREADY CAUGHT UP FOR MON HIGHS. WILL KEEP
THE RANGE IN TO ACCOUNT FOR SOME CLDS...BUT SPEED OF CLEARING MAY
PUT TEMPS AT THE HIER END OF THE RANGE. LITTLE TO NO OTHER CHANGES
NEEDED.

.EAX...NONE.

LVQ

In the hours before

Special weather statement, May 21, 1:00 PM CDT, 1 hour 35 minutes before

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-221100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
100 PM CDT SUN MAY 21 2000

FORECAST: WIDELY SCATTERED SHOWERS...WITH POSSIBLY A FEW
THUNDERSTORMS...ARE POSSIBLE ACROSS THE ENTIRE OUTLOOK AREA THIS
AFTERNOON. ANY STORMS THAT DO DEVELOP ARE NOT EXPECTED TO BECOME
SEVERE.

DISCUSSION: THE COMBINATION OF DAYTIME HEATING...AND A FRONTAL
BOUNDARY DRAPED ACROSS NORTHWEST MISSOURI AND EASTERN KANSAS...WILL
ALLOW FOR WIDELY SCATTERED SHOWERS...ALONG A WITH A FEW
THUNDERSTORMS...TO DEVELOP THIS AFTERNOON. THE FRONT SHOULD
PUSH ACROSS THE REMAINDER OF THE OUTLOOK AREA LATER
TONIGHT...BRINGING AN END TO THE CHANCE FOR PRECIPITATION.

MJM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 3:05 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	40 min
May 21, 3:45 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	45 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2000 Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.