SIOUX CITY, Iowa (KCAU) – The first snow of the season has arrived in Siouxland!
Most areas have seen snow showers move through from late Saturday morning and throughout much of the afternoon.
Several reports of slick and/or snow-covered roads have been received through portions of Siouxland with even some reports of slide-offs and other snow-related accidents as the snow has continued to fall, mainly to the north and northwest of the Sioux City metro where the heaviest snow looks to have fallen.
Between 2-3 inches of snow has been reported in SE South Dakota and northern portions of NW Iowa this afternoon, with other areas outside the heaviest band likely seeing somewhere between a dusting and 1-2 inches of accumulation, mainly on grassy and elevated surfaces.
A Winter Weather Advisory continues through late Saturday evening and into early Sunday morning.
This advisory includes: Clay, Lincoln, and Yankton Counties in SE South Dakota and Lyon County in NW Iowa, through 10 PM Saturday night.
It also includes Cherokee, Clay, O’Brien, Osceola, Sioux, & Plymouth Counties in NW Iowa, Union County in SE South Dakota, and Dixon and Dakota counties in NE Nebraska, through 1 AM Sunday morning.
In addition, the Winter Weather Advisory extends through: Antelope, Cedar, Knox, Madison, Pierce, and Wayne counties in NE Nebraska through 7 AM Sunday.
A second and final batch of snow moves through later Saturday evening into early Sunday morning, producing some minor additional accumulations of generally less than half an inch to an inch.
On average, the first measurable snowfall (a tenth of an inch or more) usually takes place on November 9. This is the average of 133 years of records, dating back to 1889. However, we’ve seen the first measurable snow as early as September 30, back in 1961 and as late as Christmas Day, December 25 of 1933.
About 61% of all 133 years on record though, or 81 years have had the first measurable snow at some point between November 1 and November 30, while only around 27% of first measurable snows have fallen in October, about 11% in December, and less than 1% in September.
With temperatures continuing to push lower and lower, our likelihood for accumulation has been going up for the area as surface temperatures will be cold.
Accumulation still remains varied, but as temperatures have continued to drop, the chances for mixed precipitation have decreased while the snow probabilities have increased. Get ready for the first taste of winter.