Thunderstorms drop 7+ inches in parts of Johnson County — check out rainfall totals in your area

Johnson County rain

Teachers at John Diemer Elementary School in Overland Park needed umbrellas on Thursday afternoon to help dismiss students on the first day of school in Shawnee Mission. A series of thunderstorms from Thursday night into Friday morning dropped upwards of 7 inches of rain in some parts of Johnson County. Image via Rob Shackelford Twitter account.

Some areas of Johnson County received upwards of 7 inches of rain from late Thursday afternoon into Friday morning, following a series of punishing thunderstorms that prompted several major downpours overnight.

One rainfall reporting station in Olathe recorded a 12-hour total topping 10 inches.

“That’s a fairly rare event,” said meteorologist Brett Williams with the National Weather Service’s Kansas City field office.

He noted that historical averages put the chance of Johnson County receiving that much rain in a 12-hour period at just 2%.

And while the Kansas City metro as a whole got hit hard Thursday night, Williams said the heaviest rains appeared to have been concentrated in Johnson County, especially around Olathe, Lenexa and Shawnee.

“The storms kept reproducing and redeveloping over the same areas,” he said.

The rain prompted the NWS to issue a flash flood warning early Friday morning, which expired at 8 a.m., but Williams said they received hardly any reports of high water.

He attributes that to the fact that the last several weeks in the Kansas City area have been extremely dry.

“The ground could handle it, could absorb the rain, and streams were low,” he said.

The severe weather has wreaked havoc in other ways.

Investigators are blaming lightning strikes for causing two separate house fires Thursday night in Overland Park. No residents were injured in either of those incidents.

And the lingering storms and rain Friday morning prompted flight delays and cancellations at Kansas City International Airport.

The good news: rain is expected to taper off Friday morning, leaving more temperate weather in its wake after a week of triple-digit heat indexes and oppressive humidity.

Here are some of the highest rainfall totals recorded in Johnson County since Thursday evening:

  • Sheridan St. @ Indian Creek (Olathe) — 10.68 in.
  • K-10 and K-7 (near Lenexa and Olathe) — 7.84 in.
  • College Blvd. @ Mill Creek (Olathe) — 7.8 in.
  • 75th St. @ K-7 (Shawnee) — 7.09 in.
  • 87th Ln. @ Mill Creek (Lenexa) — 6.9 in.
  • 151st St. and Ridgeview Rd. (Olathe) — 6.66 in.
  • Blackbob Rd. @ Indian Creek (Olathe) — 6.46 in.

And here are some other rainfall totals from around Johnson County:

  • 67th St. and Caenen St. (Shawnee) — 5.63 in.
  • Switzer Rd. @ Tomahawk Creek (Overland Park) — 5 in.
  • 79th St. @ Little Mill Creek (Lenexa) — 4.92 in.
  • Metcalf Ave. @ Tomahawk Creek (Overland Park) — 4.73 in.
  • Johnson Dr. @ Turkey Creek (Merriam) — 3.62 in.
  • Overland Park City Hall — 3.47 in.
  • Roe Ave. @ Tomahawk Creek (Overland Park ) — 3.31 in.
  • Antioch Rd. @ Turkey Creek (Mission) — 3.27 in.
  • Nall Ave. @ Brush Creek (Prairie Village) — 3.15 in.