Northeastern Kansas was hit by three waves of thunderstorms on June 27 and 28, which produced excessive rainfall and eventually resulted in significant flash flooding in the Kansas City area. The first complex of storms moved through on the morning of June 27, without much in the way of excessive rain or severe weather.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS EAX wrote it up.
Northeastern Kansas was hit by three waves of thunderstorms on June 27 and 28, which produced excessive rainfall and eventually resulted in significant flash flooding in the Kansas City area. The first complex of storms moved through on the morning of June 27, without much in the way of excessive rain or severe weather. However, storms continued to re-develop across eastern Kansas, just south of the Nebraska-Kansas border, during the afternoon. By late afternoon, 2-3 inch rainfall totals were commonplace in the northeast corner of Kansas. The focus for thunderstorm development slowly shifted southward, closer to Kansas City, during the evening hours. The thunderstorm activity shifted southward out of the area after midnight, but on the morning of the 28th, another complex of storms moved through the area. The rains that these storms dropped on already saturated ground produced significant flash flooding. Storm total rainfall amounts were 3 inches or more through most of northeast Kansas. A few of the highest storm totals were 5.35 inches in Bonner Springs, 4.77" in Easton, 4.73" in Olathe, 4.50" in Overland Park, and 4.06" in Stilwell.
The Pleasant Hill radar (KEAX), 80 km away, was scanning. The volume nearest the first event began at 13:18 UTC.
4 thunderstorm wind, 3 flash flood, 1 flood. Local standard time, as filed.
Heavy rainfall during the late evening hours resulted in urban flooding that required road closings and water rescues around midnight, local time.
Gutters were blown off of a house
Trees 10 to 16 inches in diameter were downed.
Several large trees were uprooted by thunderstorm winds.
Damaging flash flooding occurred in and around Kansas City, Kansas on the morning of June 28. Emergency crews rescued residents from approximately 30 flooded cars and 15 to 20 flooded homes. Dozens of homes were evacuated due to the flood waters. A bridge in Kansas City was damaged by the fast-moving flood waters, and sections of Interstates 35 and 635 were closed due to high water. Three buildings in Kansas City collapsed, as walls and foundations gave way under the force of the water.
Several homes were flooded in Olathe and Mission Hills, and fire and rescue units responded to 74 emergency calls during the morning of June 28. Unofficial reports were received of 4 inches of rain in an hour, and a storm total of 7.8 inches was received at 131st and Kenneth Road. Near Stanley, flood waters from the Blue River were over the 151st Street bridge. Sections of Interstate 35 were closed due to high water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 1999Every state in 1999This day in weather historyWarnings in Kansas, June 1999
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5706547, 5706464, 5706463, 5706465, 5706466, 5706546, 5706467, 5706526.