On Wednesday thunderstorms formed near mid day in Clay, Geary, Riley, and Pottawatomie Counties.  Excessive rainfall in the area was caused by many storms producing heavy rain passing over the same area.  Heavy rain during the previous day caused the ground to become saturated.  During the afternoon of June 16th nearly 2 more inches fell across this area in a short period of time causing flash flooding.  As the storm system moved eastward it continued to produce heavy rain.  As it went through Topeka it dropped 2.31 inches of rain in one hour and an additional .45 inch the next hour for a total of 2.76 inches over the two hour span between 5 pm and 7 pm.  By the time the rain stopped 2.78 inches of rain fell at Billard Airport which broke the one day record rainfall total for June 16th.  The record was previously held by the year 1996.   Many cars stalled in flooded streets in Topeka as the water rose.  In Lawrence heavy rain caused significant flooding to streets and parks within the city.  At one point the Buford M. Watson park at Tennessee St and 7th St. near downtown Lawrence was under eight feet of rushing water.  Numerous water rescues were conducted throughout town as motorists became stranded by the quickly rising water.  Aside from Topeka and Lawrence, the hardest hit areas from the deluge were portions of Pottawatomie and Riley Counties as heavy rain caused many roads to be closed.
Flooding was not the only type of hazardous weather to impact northeastern Kansas on June 16.  Some of the storms responsible for the flash flooding also brought severe hail and wind to the area.  Many reports of quarter sized hail were received by the National Weather Service office in Topeka, and a storm near Junction City brought golf ball sized hail to that area around 2 PM.  Strong, damaging winds associated with the  storms also affected portions of Shawnee and Douglas Counties.  The NWS in Topeka observed a 62 mph wind gust, and an automated weather station at Lawrence Municipal Airport reported a 58 mph wind gust.  As a result of the strong winds many tree limbs up to 6 inches in diameter snapped off of trees in Topeka and Lawrence.

Flash Flood in CLAY, KANSAS
From 16-JUN-10 15:15:00 to 16-JUN-10 16:15:00 (CST-6)
Location: WAKEFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Numerous County Roads were flooded due to measured rainfall of 2.30 inches in approximately 30 to 40 minutes.

Flash Flood in WABAUNSEE, KANSAS
From 16-JUN-10 15:29:00 to 16-JUN-10 16:29:00 (CST-6)
Location: MC FARLAND
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 99 near mile marker 156 closed due to water running over the road.

Flash Flood in SHAWNEE, KANSAS
From 16-JUN-10 15:36:00 to 16-JUN-10 16:45:00 (CST-6)
Location: MENOKEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Shawnee County emergency manager reported Shunga creek out of its banks and flooding Shunga Park. Traffic was diverted around flooding over 2nd Street due to Tecumseh Creek exceeding its banks.

Flash Flood in DOUGLAS, KANSAS
From 16-JUN-10 16:07:00 to 16-JUN-10 17:05:00 (CST-6)
Location: LAWRENCE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In Lawrence heavy rain caused significant flooding to streets and parks within the city.  At one point the Buford M. Watson park at Tennessee St and 7th St. near downtown Lawrence was under eight feet of rushing water.  Numerous water rescues were conducted throughout town as motorists became stranded by the quickly rising water.

Flash Flood in JEFFERSON, KANSAS
From 16-JUN-10 17:15:00 to 16-JUN-10 18:15:00 (CST-6)
Location: WILLIAMSTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding on 3rd Street and 5th Street in Williams down rendered those streets impassible.

Flash Flood in FRANKLIN, KANSAS
From 16-JUN-10 17:30:00 to 16-JUN-10 18:30:00 (CST-6)
Location: PRINCETON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding was reported in the Princeton area.

Funnel Cloud in LYON, KANSAS
From 16-JUN-10 15:57:00 to 16-JUN-10 15:59:00 (CST-6)
Location: EMPORIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A funnel cloud was reported near Emporia with strong rotation, extending nearly half way to the ground, before dissipating.

Hail in GEARY, KANSAS
From 16-JUN-10 12:56:00 to 16-JUN-10 12:56:00 (CST-6)
Location: CAMP FORSYTHE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter sized hail was reported on the dam at Milford Lake.

Hail in GEARY, KANSAS
From 16-JUN-10 13:02:00 to 16-JUN-10 13:02:00 (CST-6)
Location: JUNCTION CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RILEY, KANSAS
From 16-JUN-10 13:13:00 to 16-JUN-10 13:13:00 (CST-6)
Location: OGDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in RILEY, KANSAS
From 16-JUN-10 13:15:00 to 16-JUN-10 13:17:00 (CST-6)
Location: CAMP FUNSTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WABAUNSEE, KANSAS
From 16-JUN-10 14:30:00 to 16-JUN-10 14:33:00 (CST-6)
Location: MAPLE HILL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 3 inch Walnut tree limb snapped.

Thunderstorm Wind in SHAWNEE, KANSAS
From 16-JUN-10 14:55:00 to 16-JUN-10 15:15:00 (CST-6)
Location: MENOKEN
Magnitude: 54.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at Philip Billard Airport reported a 62 mph wind gust. Damage to large trees also occurred in the city of Topeka and near the airport. A large tree also fell on a power line creating a brief power outage.

Flash Flood in RILEY, KANSAS
From 16-JUN-10 13:00:00 to 16-JUN-10 14:00:00 (CST-6)
Location: KEATS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads were reported flooded between Manhattan, Keats, and Ogden. Fort Riley Blvd and Wildcat Creek near Manhattan Airport closed. Anderson Avenue near Keats was also closed due to high water running over the road.

Flash Flood in POTTAWATOMIE, KANSAS
From 16-JUN-10 13:30:00 to 16-JUN-10 14:30:00 (CST-6)
Location: BELVUE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two vehicles were washed off the road on Oregon Trail Road 3 miles northwest of St. Mary's. Onaga Road closed due to flood waters about 18 inches deep flowing over the road 6 to 7 miles north of Belvue and 4 miles south of Onaga.

Flash Flood in GEARY, KANSAS
From 16-JUN-10 13:42:00 to 16-JUN-10 14:42:00 (CST-6)
Location: MILFORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Two roads flooded near the north end of Milford Lake. Also 3 inches of water covered the west bound lanes of Interstate 70.

Flash Flood in POTTAWATOMIE, KANSAS
From 16-JUN-10 14:00:00 to 16-JUN-10 15:00:00 (CST-6)
Location: FLUSH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flush road was closed 10 miles northwest of Wamego near Hopkins Creek. Two roads also flooded on the north side of Milford Lake near Milford.

Thunderstorm Wind in OSAGE, KANSAS
From 16-JUN-10 15:15:00 to 16-JUN-10 15:35:00 (CST-6)
Location: MELVERN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An NWS employee reported a 65 mph wind gust in Carbondale. A trained spotter reported a 60 mph wind gust in Melvern twenty minutes prior.

Thunderstorm Wind in ANDERSON, KANSAS
From 16-JUN-10 15:40:00 to 16-JUN-10 15:43:00 (CST-6)
Location: HARRIS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

An emergency manager reported an estimated 60 mph wind gust.

Thunderstorm Wind in DOUGLAS, KANSAS
From 16-JUN-10 16:05:00 to 16-JUN-10 16:17:00 (CST-6)
Location: CLINTON
Magnitude: 59.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The ASOS at Lawrence Municipal Airport reported a 58 mph wind gust, while a member of the public measured a 68 mph wind gust in Lawrence. Large trees and power lines were damaged within Lawrence.

Flash Flood in RILEY, KANSAS
From 16-JUN-10 15:13:00 to 16-JUN-10 16:13:00 (CST-6)
Location: ROCKY FORD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Riley County emergency manager reported Phoenix Drive and Highland Ridge Road near Anderson Avenue have been closed due to water running over the banks.

Flood in DOUGLAS, KANSAS
From 16-JUN-10 18:45:00 to 16-JUN-10 19:45:00 (CST-6)
Location: LAWRENCE ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Creeks and streams remain out of their banks, particularly in rural areas of Douglas County.

Thunderstorm Wind in JEFFERSON, KANSAS
From 16-JUN-10 15:35:00 to 16-JUN-10 15:38:00 (CST-6)
Location: GRANTVILLE
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A trained spotter reported a 2 foot diameter tree snapped near Grantville.

Hail in RILEY, KANSAS
From 16-JUN-10 13:06:00 to 16-JUN-10 13:11:00 (CST-6)
Location: CAMP FUNSTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LYON, KANSAS
From 16-JUN-10 16:01:00 to 16-JUN-10 16:04:00 (CST-6)
Location: (EMP)EMPORIA MUNI AR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a 60 mph wind gust near Emporia.