Alert archive / Missouri / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 76, NWS Kansas City, MO

June 28, 1999Jackson County, Missouri; Johnson County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at Jun 28, 1999, 8:54 AM CDT for Jackson County, Missouri; Johnson County, Kansas. It was in force for 51 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 28, 1999, 8:54 AM CDT (13:54 UTC)
Expired: Jun 28, 1999, 9:45 AM CDT
In force: 51 min
Issued by: NWS Kansas City, MO
Area: Whole counties

Counties Johnson County, KS, Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 32 km from the middle of the area, began a volume at 13:58 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
Jun 28, 9:00 AM CDT	Thunderstorm Wind 60	Countywide, MO	Numerous reports of downed trees were received from around Jackson County, including Kansas City, Lees Summit, and Blue Springs.
Jun 28, 9:00 AM CDT	Thunderstorm Wind 70	Stanley, KS	Several large trees were uprooted by thunderstorm winds.

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 28, 8:30 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 1.9 hours before the alert went out and 91 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: 1511 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

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 28, 4:24 AM CDT, 4 hours 30 minutes earlier.

Area forecast discussion, Jun 28, 4:24 AM CDT, 4 hours 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
330 AM CDT MON JUN 28 1999

RAIN RAIN GO AWAY IS THE CHALLENGE OF THE DAY. MCS CURRENTLY MOVING
SOUTHEAST ACROSS SOUTHERN ZONES. SO FAR THERE IS NO TRAINING BEHIND
IT. SO IT LOOKS LIKE WE SIT AND WAIT TO SEE WHAT HAPPENS WITH THE
MCS OUT IN SW NEB/NW KS. THIS MCS IS LAGGING BEHINDS LAST
NITES...ALTHOUGH THERE IS CURRENTLY SOME CONVECTION DEVELOPING OUT
AHEAD OF IT. 850-300 THKNS WOULD KEEP IT MOVING ALMOST DUE EAST.
SFC FRONT IS HARD TO PICK OUT...BUT IT LOOKS TO BE STRETCHING FROM
EASTERN IA TO NW MO TO N KS. ETA PROGS DONT HAVE IT MOVING TOO MUCH
FARTHER SOUTH UNTIL 00Z. THIS ALONG WITH LLVL JET AND GOOD THETA/E
ADV MAKES TSRA CHCS GOOD AGAIN TODAY. LOOKS LIKE BY PRESS TIME CURNT
CONVECTION WILL HAVE CLEARED ALL BUT FAR SOUTHERN CWA. SO WILL PLAN
ON STARTING OUT WITH 50 POPS NORTH OF I70 TO COVER MORE DEVELOPMENT
ALONG FRONT...AND WAITING FOR MCS TO SHOW UP.

TEMPS TODAY AGAIN TRICKY. HAD A 10 DEGREE SPREAD IN THE METRO
YESTERDAY AND CAN SEE SIMILAR PROBLEMS TODAY. WILL PLAN ON FOLLOWING
A FAN/FWC COMBO AND TRIMMING A BIT OFF CURRENT FCST.

FOR TUES...CURRENT FCST LOOKS ON TRACK. THINK THE GUID TEMPS LOOK A
BIT COOL FOR GOOD SUNSHINE AT THE END OF JUNE. WILL TACK ON A CATEGORY.
WAA ALREADY GOING STRONG AGAIN IN KS BY TUES AFTERNOON. WARM FRONT
SETS UP SOUTH OF CWA...ALSO LOOKS LIKE CONVECTION COULD FIRE AHEAD
OF LLVL JET IN W KS. ALTHOUGH NO IMPRESSIVE UPPER LEVEL
FEATURES...FEEL THAT POPS ARE WARRANTED FOR ALL BUT NORTHEASTERN CWA
FOR TUES NITE.

.EAX...

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

LVQ

In the hours before

Special weather statement, Jun 28, 6:00 AM CDT, 2 hours 54 minutes before

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Special weather statement, Jun 28, 6:00 AM CDT, 2 hours 54 minutes before

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Local storm report, Jun 28, 8:39 AM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
839 AM CDT MON JUN 28 1999

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

0825 AM    PAOLA                     KS    60-65 MPH TSTM GUST
06/28/99   MIAMI

Local storm report, Jun 28, 8:39 AM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
839 AM CDT MON JUN 28 1999

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

0825 AM    PAOLA                     KS    60-65 MPH TSTM GUST
06/28/99   MIAMI

Local storm report, Jun 28, 8:48 AM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
848 AM CDT MON JUN 28 1999

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

0840 AM    BONITA                    KS    65 MPH TSTM GUST
06/28/99   JOHNSON

Local storm report, Jun 28, 8:48 AM CDT, 6 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 28, 1:10 AM CDT	Flash Flood Warning	EAX	Bates, Cass, Henry	5 hr
Jun 28, 1:38 AM CDT	Severe Thunderstorm Warning	EAX	Bates	52 min
Jun 28, 8:30 AM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	45 min
Jun 28, 8:49 AM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson	56 min
Jun 28, 9:02 AM CDT	Flash Flood Warning	EAX	Jackson	3 hr
Jun 28, 7:56 AM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	54 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1999 Severe Thunderstorm Warnings in Kansas, 1999 Every severe thunderstorm warning in 1999

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.