A Freezing Rain Advisoryis in effect for all of northern Illinois through Sunday night. Boone, Carroll, DeKalb, Jo Daviess, Lee, McHenry, Ogle, Stephenson & Winnebago County is under this advisory until 9pm. Whiteside County is under
the advisory until 6pm. In southern Wisconsin, a Winter Weather Advisory is in effect for Green, Rock & Walworth County until midnight. Ice accumulation is possible Sunday afternoon. Generally 0.1″ to 0.3″ of ice is possible, which would create hazardous travel conditions on untreated roads. A glaze of ice may also cause scattered power outages.
(9:47 PM) nwsbot: Local Storm Report by NWS LOT: Polo [Ogle Co, IL] co-op observer reports FREEZING RAIN of E0.15 INCH at 09:44 PM CST — 0.15 inches ice accumulation with 0.24 inches total liquid including rain and freezing rain.
9:00pm update: All Freezing Rain Advisories have been cancelled in Illinois. That doesn’t mean it won’t be icy, though. Drizzle, fog, and a few showers will still fall on top of the sleet/ice we saw from earlier, keeping things a bit slippery. Until the temperatures warm into the upper 30s around midnight, use caution! -Joe
7:15pm update: The last of the significant precipitation is moving out of southern Lee and DeKalb County. We will have patchy drizzle and patchy freezing drizzle possible tonight. Roads remain slippery and will remain so until temperatures climb into the upper 30s around the midnight hour. The Freezing Rain Advisory for northern Illinois is set to expire at 9pm. Winter Weather Advisories for southern Wisconsin are still set to expire at midnight. A few rain showers may redevelop in eastern Iowa and drift northeast overnight. -Joe
(7:03 PM) nwsbot: Local Storm Report by NWS DVN: Freeport [Stephenson Co, IL] broadcast media reports FREEZING RAIN of E0.15 INCH at 07:01 PM CST — total ice accumulation
6:00pm update: The Freezing Rain Advisory for Whiteside County has expired. -Joe
5:15pm update: There are a lot of brighter echos on ExacTrack|HD this evening. A low level jet has allow some convection to form, producing some brief moderate-to-heavy downpours (with isolated thunder and lightning). We just had a quick downpour at WREX….it fell as rain and melted some sleet, but quickly REFROZE as temperatures hover near freezing. We will have this threat for the next few hours. -Joe
(3:20 PM) nwsbot: Local Storm Report by NWS MKX: 2 W Brodhead [Green Co, WI] law enforcement reports LIGHTNING at 03:14 PM CST — thunderstorm with lightning and sleet near brodhead. indicated by nws radar confirmed by green co. law enforcement.
3:10pm update: The freezing rain and sleet has become scattered in nature. Temperatures are hovering around 32 degrees. Numerous roll over accidents have been reported. -Joe
2:15pm update: The back edge of the bulk of the precipitation is along the Rock River. However, more freezing rain redevelopment is expected in eastern Iowa and will move through the area, although it will be more scattered in nature. Ice and sleet accumulations have generally been around 0.1″ and we will continue to add to that this afternoon. Temperatures will begin to rise about freezing later this evening, allowing things to begin to melt. There have been numerous reports of accidents. Please use caution if you must travel this afternoon. -Joe
(1:37 PM) nwsbot: Local Storm Report by NWS LOT: W Rockford [Winnebago Co, IL] broadcast media reports FREEZING RAIN of U0.00 INCH at 01:33 PM CST — freezing rain with sleet. minor ice glaze
(1:27 PM) nwsbot: Local Storm Report by NWS MKX: Edgerton [Rock Co, WI] trained spotter reports SNOW of M0.3 INCH at 01:24 PM CST — 3/10 inch new snow in last 1/2 hour. visibility near 1/8 mile. temperature fell from 31 to 28 in last hour.
1:15pm update: Sleet, snow, and freezing rain is occurring across the WREX viewing area with accumulation reports beginning to come in. The bulk of the precipitation shield is overhead and becoming more scattered in nature over eastern Iowa and far northwest Illinois. More development is expected this afternoon, although the sleet and freezing rain will become more scattered in nature. Slippery road conditions will continue to be a concern, with all local temperature reporting stations seeing readings of 29 to 32 degrees
(1:06 PM) nwsbot: Local Storm Report by NWS LOT: Mendota [La Salle Co, IL] amateur radio reports FREEZING RAIN of E0.00 INCH at 01:05 PM CST — light glaze on surface
(1:05 PM) nwsbot: Local Storm Report by NWS LOT: W Rockford [Winnebago Co, IL] broadcast media reports SLEET of U0.00 INCH at 01:01 PM CST — reported by wtvo.
(12:51 PM) nwsbot: Local Storm Report by NWS LOT: Woodstock [Mchenry Co, IL] co-op observer reports SLEET of U0.00 INCH at 12:49 PM CST — sleet first then turned to snow
12:15pm update: Sleet mixed with snow and freezing rain is falling across the Rockford area. Minor accumulations have been observed, including here at WREX-TV.
11:15am update: Freezing rain mixed with sleet and very fine, light snow has been observed in the counties closest to the Mississippi River. -Joe
This post was written by Joe Astolfi on January 27, 2013