Lyon storm history

Freezing drizzle and freezing rain caused icy surfaces, resulting in a few vehicle accidents. One of the accidents, on Highway 23 about 11 p.m., was fatal.

Two episodes of extended blizzard conditions occurred over a slightly less than 24 hour period, with a slight improvement in conditions during the mid-afternoon to early evening. Gusty northwest winds from 35 to 55 mph were concurrent with light to moderate snowfall, which totale…

Sustained northwest winds occasionally reached 40 to 45 mph with a peak gust of 60 mph at Tracy and 59 mph near Florence.

Synoptic northwest winds were occasionally sustained from 40 to 50 mph at an Automated Weather Observing System site at Marshall with gusts at high as 65 mph at a Minnesota Road Weather Information System site at Florence.

Snowfall totaled 2.0 inches at Tracy.

A long-duration snowfall totaled 6.5 inches 2 miles southeast of Balaton. During a brief break in snowfall starting late evening of November 28, a period of light freezing rain and freezing drizzle resulted in a few hundredths of an inch ice accumulation.

Sustained winds reached 40 to 46 mph at times with a peak gust of 66 mph at a Minnesota Road Weather Information System site near Florence, 59 mph at an Automated Weather Observing System site at Tracy, and 58 mph at a Minnesota Road Weather Information System site at Taunton.

Strong winds and light snowfall which totaled 1.5 inches 5 miles south of Cottonwood and 1.0 inch at Marshall and Minneota produced several hours of visibility around one-quarter mile.

Thunderstorm winds snapped a 3-inch diameter tree in half.

Thunderstorm wind gusts as high as 63 mph were measured by AWOS station KMML at the Marshall Municipal Airport.

Widespread flooding occurred in Tracy between Rowland Street and Front Street and from S 1st Street to S 4th Street, which required pumping of water.

Heavy rainfall caused water to overrun 170th Street between 190th and 200th Avenue. The roadway was closed as water remained ponded over the road for several hours.

Heavy rainfall caused inundation and persistent flooding of County Road 6 between U.S. Highway 59 and County Road 35, resulting in closing of the road for several hours.

Several county roads were under water and closed for several hours after the initial flooding, including 170th Street northwest of Balaton and County Road 6 south of Marshall.

Six to eight inch diameter tree limbs downed by thunderstorm winds.

Several healthy tree limbs from 3 to 6 inches in diameter were broken by thunderstorm winds.

Thunderstorm wind gusts caused major tree damage across the city of Marshall, with several downed trees blocking roadways.

Thunderstorm wind gusts snapped off a cottonwood tree of 6 to 8 inches diameter at the base.

Thunderstorm wind gusts were measured by AWOS station KMML Marshall Municipal Airport.

Thunderstorm wind gusts were measured by a Road Weather Information System sensor near Florence.

A 63 mph wind gust was recorded on a personal weather station just northeast of Minneota.

Thunderstorm wind gusts up to 70 mph were measured by AWOS station KMML at Marshall Regional Airport.

Hail was mostly dime size, but some was as large as a quarter.

Hail varied from quarter to half dollar size, mixed with moderate to heavy rain.

Heat index values peaked as high as 103 degrees in Marshall and 102 degrees in Taunton.

Dangerous heat index readings reached an afternoon peak on July 27 as high as 112 degrees at Marshall, 109 degrees at Tracy, and 105 degrees at Taunton.

Dangerous heat index readings reached afternoon peaks as high as 107 degrees at Marshall on July 22.

Heavy rainfall from 4 to 8 inches in just a couple of hours led to flooding of numerous roads around Marshall.

Video showed flowing water roughly one foot deep across U.S. Highway 59 near the intersection of MN Highway 23.

The Marshall Fire Department performed a water rescue for a person trapped in a flooded car.

Strong thunderstorm wind gusts broke off several 2 inch diameter tree limbs.

Thunderstorm wind gusts measured by the Minnesota RWIS station at Taunton.

Daily afternoon and evening heat indices ranged from 105 to 109 degrees with a maximum heat index of 109 degrees at Automated Weather Observing System sites in Marshall and Tracy on June 21, and 106 degrees at a Road Weather Information System site at Taunton on June 21.

Sustained easterly winds reached 30 to 32 mph at Taunton.

While the highest winds were inconsistent over the period, winds did reach sustained levels from 40 to 48 mph at times with gusts up to 60 mph at Marshall and 59 mph near Florence.

Snowfall totaled 4.5 inches 4.1 miles south-southwest of Milroy and 2.1 miles southeast of Balaton, and 4.4 inches at Marshall.

Severe (D2) drought conditions improved to moderate (D1) early month.

Ice totaled 0.12 inches 2.1 miles southeast of Balaton.

Sustained winds occasionally reached 40 to 45 mph during the morning and early afternoon at the Minnesota Department of Transportation site near Florence. The peak wind gust was 56 mph.

After a period of evening rainfall, snow developed and became briefly heavy with accumulation of 2.5 inches at Tracy and 2.0 inches 5 miles south of Cottonwood and 4 miles south-southwest of Milroy. As northwest winds increased to a sustained 40 to 44 mph at Marshall and Tracy an…

Northwest winds increased to a sustained 40 to 44 mph at Marshall and Tracy and gusted as high as 59 mph at Tracy.

Moderate (D1) drought worsened to severe (D2) conditions early in March.