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(12:45PM - 10/19/20) A disturbance moving through the region will bring a surprise snow event to portions of Northern Illinois this afternoon.
Summary... A disturbance moving through the region will bring a surprise snow event to portions of Northern Illinois this afternoon. This event has not been well modeled, as most model guidance had little to no precipitation, let alone snow. (Kudos to the GFS model for consistently being the model to show some snow). An area of snow has been moving across Iowa this morning into early this afternoon, with a swath of accumulation across the heart of Iowa...Upwards of 3-8" in some areas north of Des Moines. While temperatures have been well above freezing this morning across Northwest Illinois, dynamic and evaporative cooling is accruing, which will allow precipitation to fall as snow. This area of snow is now entering Northwest Illinois, where a period of moderate to heavy snow is likely this afternoon. Accumulation is possible, if not likely, in a swath across portions of Northwest Illinois...Where upwards of 1-4" may be possible in the heaviest axis. Outside of this axis, only up to a dusting is possible. Further east, warmer temperatures will into the 40's exist across North-Central and Northeast Illinois. While some cooling of temperatures may occur due to the aforementioned dynamic and evaporative cooling processes occurring, not enough cooling will be possible...Thus, across North-Central Illinois rain may only change over to snow or a rain/snow mix for a short time and only rain is expected across Northeast Illinois. Below is the snowfall forecast for this snow event. 
JP
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(10:15AM - 10/17/20) A storm system moving through the region today will bring high winds and elevated fire danger to much of the state.
Summary... A storm system moving through the region will bring high winds and elevated fire danger to the state today. Winds are gradually increasing across the state this morning, with the period of highest winds likely from late this morning through early this evening, before diminishing during the evening. Wind gusts of 35-55MPH will be common across a large portion of the state during this period. Winds will be strong enough to blow around loose and light weight items, and potentially be enough to cause isolated minor tree damage. In addition to the high wind threat, an elevated fire danger will exist as well across the heart of the state. The combination of continued overall dry conditions across much of the state, lower dew points/humidity, and high winds...will lead to an elevated fire danger. Any fall field and foliage burning should be held off for calmer weather day. Below is the high wind and fire danger forecasts for this morning - tonight.
(8:45PM - 10/16/20) A storm system moving through the region on Saturday will bring high winds and elevated fire danger to much of the state.
Summary... A storm system moving through the region will bring high winds and elevated fire danger to the state on Saturday. Winds will gradually increase across the state Saturday morning, then continuing through the day, before diminishing during the evening. The period of highest winds will be roughly from late Saturday morning through early Saturday evening, when wind gusts of 35-55MPH will be common across a large portion of the state. Winds will be strong enough to blow around loose and light weight items, and potentially be enough to cause isolated minor tree damage. In addition to the high wind threat, an elevated fire danger will exist as well across the heart of the state. The combination of continued overall dry conditions across much of the state, lower dew points/humidity, and high winds...will lead to an elevated fire danger. Any fall field and foliage burning should be held off for calmer weather day. Below is the high wind and fire danger forecasts for Saturday morning - Saturday night.
(5:45PM - 10/15/20) A storm system moving through the region today will bring high winds and elevated fire danger to much of the state.
Summary... While a good portion of Northern and Central Illinois already saw a freeze and several occurrences of frost this month, the growing season has still not been deemed over...which is usually designated after a killing freeze (lows 28 degrees or colder) or by November. Thus, frost advisories and freeze warnings have been issued by the NWS across much of the state. A freeze to near freeze is expected across a large portion of the state tonight, with a frost likely across just about the entire state. Low temperatures will range from the upper 20's to low 30's across Northern Illinois (Low-upper 30's in immediate Chicago metro), the upper 20's to mid 30's across Central Illinois, to the low to upper 30's across Southern Illinois. It is possible that if conditions become prime, that a few usual rural/prone cold locations in Illinois could reach the mid 20's. 
JP
(11:30AM - 10/14/20) A storm system moving through the region today will bring high winds and elevated fire danger to much of the state.
Summary... A storm system moving through the region will bring high winds and elevated fire danger to the state today. Winds have been gradually increasing across the state this morning, and will continue to do so into the early afternoon. The period of highest winds will be roughly from midday into this evening, when wind gusts of 35-50MPH will be common across a large portion of the state. During the evening winds will quickly diminish, when a cold front will be quickly sweeping across the state. On the backside of the storm system, winds will once again increase overnight across Northern and Central Illinois, with wind gusts of 20-35MPH possible. In addition to the high wind threat, an elevated fire danger will exist as well across the heart of the state. The combination of continued overall dry conditions across much of the state, lower dew points/humidity, and high winds...will lead to an elevated fire danger. Any fall field and foliage burning should be held off for calmer weather day. Below is the high wind forecast for this morning - tonight.
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