If the track is wrong and goes north, we will be facing a threat of heavy rain with thunderstorms. The modeling for the 10-mile long Arlington Heights community is shaping up to receive a wet snow dump of about 7.4 inches near Lake Cook Road, 7.4 inches near Palatine Road, and 7.2 inches near Algonquin Road. The margin from 7 inches to 8 inches is taking shape west of South Barrington in a line to around northern Buffalo Grove, Long Grove, Vernon Hills, and Lindenhurst. As the track of this system still has some minor movement over the next couple of days, an exact location of rain/snow lines or amounts are expected to change.Ĭurrently, GFS/ECMWF models are close in agreement for the storm track, and the deepest snow (high 8-inch to mid 9-inch range) near Chicagoland is modeling around Algonquin, Cary, Crystal Lake, Prairie Grove, McHenry, Johnsburg, Spring Grove, Hebron, Genoa City (Wisconsin) and Twin Lakes (Wisconsin). NWS Chicago is predicting Snow ratios of less than 9:1 (9 inches of snow holding 1 inch of water). Precipitation with the Friday system currently appears very messy - wet snow and sleet. The system is forecast to continue tracking into the eastern Great Lakes Friday night.

The NBM (National Blend of Model) was too high with long term winds, so collaboration with neighboring weather service offices reduced values of sustained and gusts to less than advisory criteria.

With the track of this system close to the area, winds will ramp up Friday. The cut-off Low is forecast to track northeast through the mid-Mississippi River Valley Friday, impacting the local area beginning late Thursday night through Friday. This system gets driven north northeast late Thursday evening into Friday, while a ridge of High pressure east of the Bahamas dominates the weather pattern across the southeast United States. According to NWS Chicago, the weather system will waste no time sitting around, with rapid ejection of a cut-off Low Thursday through the southwest United States into Texas by Thursday evening.Īs this system rapidly arrives in the southern Plains - along with the frontal boundary lingering - a strong moisture ingest will occur from the Gulf of Mexico.

Snow totals chicago il