Tuesday morning weather

All severe thunderstorm warnings have expired for the viewing area.  There have been numerous reports of power outages across northern Illinois as well as reports of trees/tree branches down on roadways.  If you encounter an intersection that is without power remember to treat it as a four way stop. 


There are a few more showers/storms upstream moving out of Minnesota that may be here later this morning.  With the stalled boundary just to our southwest the storm threat will continue into the afternoon.   

(6:09:43 AM) nwsbot: Local Storm Report by NWS LOT: DE Kalb [Dekalb Co, IL] emergency mngr reports NON-TSTM WND DMG at 05:35 AM CDT -- tree and power lines down blocking intersection of bethany road and first street. winds estimated at 70 mph at kishwaukee hospital in dekalb.

(5:57:50 AM) nwsbot: Local Storm Report by NWS LOT: DE Kalb [Dekalb Co, IL] emergency mngr reports TSTM WND GST of M56 MPH at 05:40 AM CDT -- at northern illinois university.


5: 55am Update: Severe Thunderstorm Warning for Boone, Winnebago and Ogle counties has been expired.  However, the Severe Thunderstorm Warning continues for DeKalb and McHenry counties until 6:30am.  Strongest of the thunderstorms moving through through McHenry county where a 67 mph wind gust was reported in Harvard.  There have been several reports of tree branches down when the intial line came through.  Once this band passes skies will remain mostly cloudy with a few scattered showers through the morning.

(5:30:32 AM) nwsbot: LOT issues Severe Thunderstorm Warning [wind: 70 MPH, hail: <.50 IN] for Cook, De Kalb, DuPage, Kane, Kendall, Lake, McHenry, Will [IL] till 6:30 AM CDT





5:25am Update:  Strongest part of the storm now entering into western Boone county.  A Severe Thunderstorm Warning continues for Winnebago, Boone, McHenry, Ogle and DeKalb counties until 5:45am.  There have been numerous reports of wind gusts near 60 mph along with numerous reports of tree branches down.  Heads up near Belvidere, Capron, Caledonia and Poplar Grove.  These storms will continue to produce strong winds, frequent lightning and heavy rainfall.

(5:16:32 AM) nwsbot: MKX continues Severe Thunderstorm Warning [wind: 60 MPH, hail: 0.75 IN] for Walworth [WI] till 5:45 AM CDT

(5:05:39 AM) nwsbot: Local Storm Report by NWS MKX: 2 S Janesville Airport [Rock Co, WI] trained spotter reports TSTM WND GST of M52 MPH at 05:02 AM CDT -- peak gust before lost power.


(5:07:40 AM) nwsbot: MKX: Unverified/Non-NWS Report -- from Tom Purdy (via spotternetwork.org) @ 05:06 AM CDT -- (S) Other -- -- Spotter is 1 miles NNE of Afton, WI (Rock county) [42.619/-89.063] -- Large power flash 1-2 miles north of current location, power is now out at current location. (SN#12549)

(5:09:05 AM) nwsbot: Local Storm Report by NWS MKX: Janesville Airport [Rock Co, WI] awos reports TSTM WND GST of M50 MPH at 05:08 AM CDT --


(4:55:53 AM) nwsbot: Local Storm Report by NWS DVN: 1 SSW Rock City [Stephenson Co, IL] trained spotter reports TSTM WND GST of E50 MPH at 04:45 AM CDT -- estimated 50+ mph


(4:58:10 AM) nwsbot: Local Storm Report by NWS DVN: Freeport [Stephenson Co, IL] trained spotter reports TSTM WND GST of E60 MPH at 04:56 AM CDT -- received from spotter st256 who was in freeport

(5:04:56 AM) nwsbot: Local Storm Report by NWS DVN: Freeport Albertus Airpo [Stephenson Co, IL] awos reports TSTM WND GST of M58 MPH at 04:55 AM CDT --

(5:05:17 AM) nwsbot: Local Storm Report by NWS DVN: 1 N Freeport [Stephenson Co, IL] trained spotter reports TSTM WND DMG at 05:01 AM CDT -- huge tree blocking west bound lane of rt 75 near intersection of highway 26
(5:00:50 AM) nwsbot: MKX issues Severe Thunderstorm Warning [wind: 60 MPH, hail: 0.75 IN] for Walworth [WI] till 5:45 AM CDT
(4:47:52 AM) nwsbot: LOT issues Severe Thunderstorm Watch for Boone, Cook, De Kalb, DuPage, Kane, Kendall, Lake, Lee, McHenry, Ogle, Will, Winnebago [IL] and Lake, Porter [IN] till 9:00 AM CDT


(4:42:29 AM) nwsbot: LOT issues Severe Thunderstorm Warning [wind: 60 MPH, hail: <.50 IN] for Boone, De Kalb, McHenry, Ogle, Winnebago [IL] till 5:45 AM CDT
(4:33:40 AM) nwsbot: MKX issues Severe Thunderstorm Warning [wind: 60 MPH, hail: 0.75 IN] for Rock [WI] till 5:15 AM CDT

(4:27:25 AM) nwsbot: LOT issues STRONG THUNDERSTORMS MOVING INTO NORTHERN ILLINOIS for Boone, De Kalb, Kane, Lake, McHenry, Ogle, Winnebago [IL] till 6:30 AM CDT

(4:27:21 AM) nwsbot: Local Storm Report by NWS DVN: 1 ESE Nora [Jo Daviess Co, IL] trained spotter reports TSTM WND GST of E50 MPH at 04:26 AM CDT -- gusts 40-50+ estimated

Severe Thunderstorm Warning for Stephenson and Jo Daviess Counties until 5:15 am


Severe Thunderstorm Warning continues for Green county until 4:45am.  Storms extend from Madison southwest to near Warren in far southern Stephenson county.  Heavy rainfall and brief, gusty winds will remain possible.








MKX issues Severe Thunderstorm Warning [wind: 60 MPH, hail: 0.75 IN] for Dane, Green, Iowa, Lafayette [WI] till 4:45 AM CDT

A line of severe thunderstorms are currently moving through southwest Wisconsin and will continue to move southeast around 45 mph.  I expect the southern edge of this line to move through Jo Daviess and western Stephenson county within the next 45 minutes.  Wind gusts near 50 mph, or greater, heavy rain and frequent lightning can be expected.