Yet another winter storm, in an already active winter season, impacted much of Kansas and Missouri, during the weekend of February 20-21, 2010. This challenging winter storm, brought numerous forecast problems with hazards ranging from heavy snow, to sleet, ice, rain, and even flooding. This upper level storm system originated well off the California coast. Its general track was typical of a classic El Nino pattern, moving across the Southwest and lifting northeast into the Missouri, and eventually the Ohio River Valley regions. At the surface, several waves of precipitation moved through the area, with periodic sleet, snow, and rain showers, persisting from late Saturday afternoon through daybreak Sunday. However, the heaviest precipitation was still to come.
Late on the 21st, a large area of thunderstorms developed in Texas, Oklahoma, and Kansas and began streaming northeast towards the area. While thunderstorm activity diminished as precipitation arrived, heavy rainfall still took place across portions of central Missouri. Numerous streams, rivers, and creeks went above flood stage. This precipitation area also produced rapid ice accumulations, south of the Missouri River.
However, this was only the beginning of the heavy precipitation. As an area of surface low pressure and upper level low passed just south of the area, a large but incredibly intense band of snowfall, developed in areas of northern Kansas and northern Missouri on the morning of the 21st. This band of snow persisted through the evening hours of the 21st, producing snowfall rates between 1 and 2 inches per hour at times. Snowfall tapered off by the 22nd, as the upper level storm system moved well east of the region. Snowfall totals reached a foot in several locations.

Winter Storm in MIAMI, KANSAS
From 21-FEB-10 03:00:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A mixture of snow, sleet, and freezing rain, caused hazardous driving conditions across the area. Ice accumulations reached a quarter of an inch in spots.

Winter Storm in WYANDOTTE, KANSAS
From 21-FEB-10 03:00:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A mixture of snow, freezing rain, and sleet, caused hazardous driving conditions across the area. Ice accumulations were up to a quarter of an inch in spots.

Winter Storm in ATCHISON, KANSAS
From 21-FEB-10 02:30:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to 6 inches of snow was reported across the county. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in DONIPHAN, KANSAS
From 21-FEB-10 02:30:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Four to six inches of snow was reported across the county. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in JOHNSON, KANSAS
From 21-FEB-10 03:00:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A mixture of snow, freezing rain, and sleet, was reported across the county. Ice accumulations were up to one quarter of an inch.

Winter Storm in LEAVENWORTH, KANSAS
From 21-FEB-10 02:30:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Six inches of snow was measured in Leavenworth. Blowing and drifting snow caused hazardous driving conditions.