A strong storm system lifted northeast into the region from Oklahoma, during the late afternoon and early evening hours on February 28th. The dynamics from this storm system provided the lift for rapid thunderstorm development along and north of a warm front by the early evening hours. There were numerous reports of hail with the storms, as well as some flash flooding.
The most significant severe thunderstorm produced a tornado in Anderson county Kansas, which then tracked east into Linn county Kansas. The EF4 tornado took a nearly 24 mile continuous path, where it caused damage to mainly rural areas. Just north of Blue Mound a single residence, garage, and several farm buildings were completely destroyed. The tornado was historic, since it was the first time anywhere in the country that a tornado was rated as high as EF4, since switching to the new Enhanced Fujita scale February 1st, 2007.

Hail in JOHNSON, KANSAS
From 28-FEB-07 18:16:00 to 28-FEB-07 18:16:00 (CST-6)
Location: LEAWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail with a diameter of one inch was reported at the intersection of 135th and Stateline.

Hail in LINN, KANSAS
From 28-FEB-07 19:42:00 to 28-FEB-07 19:42:00 (CST-6)
Location: PARKER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, KANSAS
From 28-FEB-07 20:14:00 to 28-FEB-07 20:14:00 (CST-6)
Location: LENEXA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in LINN, KANSAS
From 28-FEB-07 19:35:00 to 28-FEB-07 19:35:00 (CST-6)
Location: CENTERVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in MIAMI, KANSAS
From 28-FEB-07 20:56:00 to 28-FEB-07 20:56:00 (CST-6)
Location: PAOLA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, KANSAS
From 28-FEB-07 18:13:00 to 28-FEB-07 18:13:00 (CST-6)
Location: STANLEY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in JOHNSON, KANSAS
From 28-FEB-07 18:15:00 to 28-FEB-07 18:15:00 (CST-6)
Location: LEAWOOD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in JOHNSON, KANSAS
From 28-FEB-07 18:16:00 to 28-FEB-07 18:16:00 (CST-6)
Location: OVERLAND PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, KANSAS
From 28-FEB-07 19:27:00 to 28-FEB-07 19:27:00 (CST-6)
Location: LENEXA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in JOHNSON, KANSAS
From 28-FEB-07 20:14:00 to 28-FEB-07 20:14:00 (CST-6)
Location: LENEXA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MIAMI, KANSAS
From 28-FEB-07 21:08:00 to 28-FEB-07 21:08:00 (CST-6)
Location: HILLSDALE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Lightning in WYANDOTTE, KANSAS
From 28-FEB-07 22:00:00 to 28-FEB-07 22:00:00 (CST-6)
Location: BONNER SPGS
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a transformer on the roof of a middle school.

Hail in JOHNSON, KANSAS
From 28-FEB-07 18:28:00 to 28-FEB-07 18:28:00 (CST-6)
Location: OVERLAND PARK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in JOHNSON, KANSAS
From 28-FEB-07 19:14:00 to 28-FEB-07 19:14:00 (CST-6)
Location: ROELAND PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in JOHNSON, KANSAS
From 28-FEB-07 18:40:00 to 28-FEB-07 18:40:00 (CST-6)
Location: OVERLAND PARK
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, KANSAS
From 28-FEB-07 20:24:00 to 28-FEB-07 20:24:00 (CST-6)
Location: OLATHE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in JOHNSON, KANSAS
From 28-FEB-07 23:43:00 to 28-FEB-07 23:59:00 (CST-6)
Location: MISSION
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

I-35 near Turkey Creek closed due to high water.

Hail in MIAMI, KANSAS
From 28-FEB-07 21:08:00 to 28-FEB-07 21:08:00 (CST-6)
Location: PAOLA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in JOHNSON, KANSAS
From 28-FEB-07 21:15:00 to 28-FEB-07 23:59:00 (CST-6)
Location: LENEXA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains flooded portions of Interstate 35, from 87th Street to 75th Street.

Tornado in LINN, KANSAS
From 28-FEB-07 19:30:00 to 28-FEB-07 20:10:00 (CST-6)
Location: BLUE MOUND
Tornado F-scale: EF4
Property damage: 400.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

EF4 tornado crossed from Anderson county into Linn county in Kansas at 7:30 PM CST, 4 miles northwest of Blue Mound. The tornado moved east-northeast over mainly rural areas of the county. A home, several farm buildings, and garage were completely destroyed. Other buildings received minor to moderate damage. There were no injuries or deaths with this tornado. The tornado also downed trees and power lines. The tornado lifted 6 miles north-northeast of Pleasanton at 8:10 PM CST.