3rd snowfall in the past 11 days moves into the area Tuesday, as two systems merge just to our west. While there are still some questions on precipitation type during the day for parts of the area, it looks likely that some accumulation is likely for most of central Illinois.
COMPLEX FORECAST
As we first mentioned late last week, a northern low pressure system will phase with a secondary low in the southern Plains early Tuesday morning. The low looks to move almost directly over central Illinois, which gives many in our area a little bit of everything. Heaviest snow amounts will be north of the low, which will see all snow. Areas along the track will see a range of rain, to freezing rain, to snow. Eventually all areas will see the change to snow by mid afternoon as colder air moves in behind the storm.
ANOTHER WET AND HEAVY SNOW
Expect initial bands of precipitation to begin during pre dawn hours of Tuesday morning in a scattered fashion. More widespread precipitation will fill in just in time for the morning drive. Areas along and south of the I-74 may see mostly rain during this time, while areas north of I-74 may see a mix of rain and snow. Areas along I-80 will see mostly snow for the morning to mid day time period.
Plenty of moisture will be available with this storm. 4 model average around 0.6" of liquid in Peoria. The average among 6 different computer models is 4.4" for Peoria, with the low end 2.5", and the high end at 6.0"
Amounts will be much higher to the north where this will be a mainly snow event. Based on this, the National Weather Service has issued Winter Storm Warnings for counties along the I-80 corridor, while everyone else in a Winter Weather Advisory.
From the 18z GFS Model:
Peoria 3.6", Bloomington 3.6", Pontiac 5.5", Galesburg 4.5", Peru 8.1" Canton 2.7"
This is just one model of many that we look at, so is subject to change. Be sure to check in Tuesday morning for updates.
No comments:
Post a Comment