A storm aiming to dump up to a couple of feet of snow over the Sierra Nevada and wild weather in general in California Friday will swing Colorado way this weekend with heavy wet snow.
The storm has the potential to bring a foot or more of snow to the mountains and foothills of central and northern Colorado to southern Wyoming.
Portions of I-25, I-70 and I-80 are likely to be affected by slow travel for a time.
Colorado Springs, Denver, Fort Collins in Colorado and Cheyenne, Laramie and Rawlins in Wyoming appear to be in line for at least some wet snow with the foothills around Denver and Fort Collins perhaps receiving a sizable amount of the white stuff.
Due to the marginal temperatures with the storm, a significant amount of the precipitation will fall as rain out of the mountains, making for highly variable snowfall accumulations and forecast challenges.
Snow will wind down over the Sierra Nevada tonight. The bulk of the snow will fall over Colorado during Saturday night into early Sunday. This map shows accumulations through 6:00 p.m. MDT Saturday.
In addition, if the storm were to swing farther south or north from the Rockies, it could correspondingly result in a south-north shift in the accumulating snow away from the mountains.
It does appear that a band of snow will emerge from the Rockies and spill over the northern Plains and into the Upper Midwest later in the weekend. A temperature difference of a couple of degrees will make or break snowfall for these areas.
Since part of the snow will fall at night, it will have a chance of bringing slush on road surfaces even out of the mountains.
In the high country of Colorado, roads are likely to be a mess for a time.
The same storm system could produce a major tornado outbreak over the Plains this weekend.
A tropical wave is likely to become the Atlantic Basin's next tropical storm as it approaches or crosses the Caribbean Sea later this week.
Bouts of wet weather will soak the northeastern United States during the last full week of September.
Typhoon Megi will threaten lives and property across Taiwan and eastern China into the middle of the week.
Gusty winds will accompany a push of chilly air across the Great Lakes through Tuesday.
The final day of September will bring a rare lunar event that hasn’t occurred since March of 2014, a Black Moon.
Following some rain and gusty winds on Tuesday, a strong storm will target the United Kingdom on Thursday.
Portland, ME (1991)
Record combined August-September rainfall of 19.65 inches up to Sept. 25. Old record was 14.65 inches in August-September 1954.
Clearfield, PA (1994)
Tornado touched down.
Dakotas & Minn. (1942)
26th-28th, severe freeze with temperature of only degrees F. at Parshall, N.D.