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, more typical of late February, 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 GRUNDY, MISSOURI
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: COOP Observer

Nine and one half inches of snow was reported in Trenton. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in CALDWELL, MISSOURI
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: COOP Observer

Six inches of snow was reported in Hamilton. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in PUTNAM, MISSOURI
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: COOP Observer

The observer in Unionville measured 10.4 inches of snow. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in LIVINGSTON, MISSOURI
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: Amateur Radio

Twelve inches of snow was measured seven miles northwest of Chillicothe. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in CLINTON, MISSOURI
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

Up to eight inches of snow fell across the county. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in SULLIVAN, MISSOURI
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: COOP Observer

Up to 8.5 inches of snow was measured in Green City. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in HOLT, MISSOURI
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: COOP Observer

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

Winter Storm in MERCER, MISSOURI
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: COOP Observer

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

Winter Storm in BUCHANAN, MISSOURI
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

Six to eight inches of snow was reported across the county. Blowing and drifting snow produced hazardous driving conditions.

Winter Storm in CLAY, MISSOURI
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

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

Winter Storm in CARROLL, MISSOURI
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

Up to 6 inches of snow, was mixed at times, with freezing rain and sleet across the county.

Winter Storm in HARRISON, MISSOURI
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 DAVIESS, MISSOURI
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: COOP Observer

Twelve inches of snow was measured in Gallatin. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in MACON, MISSOURI
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: Trained Spotter

A trained spotter in La Plata measured 7.4 inches of snow. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in JACKSON, MISSOURI
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. Up to one quarter of an inch of ice accumulation was observed.

Winter Storm in DE KALB, MISSOURI
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: COOP Observer

Up to 9 inches of snow was reported across the county. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in PLATTE, MISSOURI
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 LAFAYETTE, MISSOURI
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, fell across the county. Ice accumulations ranged from one quarter to one half inch.

Winter Storm in CHARITON, MISSOURI
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: COOP Observer

Seven inches of snow was reported in Sumner. Blowing and drifting snow created hazardous driving conditions.

Winter Storm in LINN, MISSOURI
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: COOP Observer

Brookfield measured 10 inches of snow. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in GENTRY, MISSOURI
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

The southern portion of the county had up to 6 inches of snow. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in RAY, MISSOURI
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 SCHUYLER, MISSOURI
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: COOP Observer

Up to 6 inches of snow was reported in Downing. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in ADAIR, MISSOURI
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: COOP Observer

Around 8 inches of snow was reported across the county. Blowing and drifting snow caused hazardous driving conditions.

Winter Storm in ANDREW, MISSOURI
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

Six to eight inches of snow was reported across the county. Blowing and drifting snow produced hazardous driving conditions.

Winter Storm in CASS, MISSOURI
From 21-FEB-10 08:00:00 to 21-FEB-10 23:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Up to one quarter of an inch of ice accumulation was reported, from freezing rain that fell across the county. Snowfall of up to 2 inches was also observed.