Tuesday Storms

RAINFALL REPORTS:

(4:22:03 PM) nwsbot: Local Storm Report by NWS DVN: SSE Shannon [Carroll Co, IL] trained spotter reports HEAVY RAIN of E1.57 INCH at 04:20 PM CDT --

(4:14:34 PM) nwsbot: Local Storm Report by NWS DVN: 4 ENE Freeport [Stephenson Co, IL] trained spotter reports HEAVY RAIN of M1.40 INCH at 04:13 PM CDT --

6:15pm Update:  The heavy rain from Tuesday afternoon has now shifted east towards Chicago.  Skies have dried over Northern Illinois and Southern Wisconsin with only a few isolated showers developing to the west.  The cold front remains out west in Iowa and will move through during the overnight.  So we'll keep thunderstorms in the forecast through Wednesday morning.


High levels of moisture in the atmosphere per our meso-analysis is leading to the heavy rainfall most are experiencing from Highway 26 on eastward.  If we were to think of the atmosphere like a sponge, we have essentially close to an inch and a half of moisture that these storms could possibly tap in to.  That means a lot of heavy rain until the storms weaken and move on.

2:00pm Update: A Flood Advisory has been issued for Ogle and Lee counties until 5pm as estimated rainfall totals have been close to two inches in some locations.  The heavy rain will continue through at least 4pm for some, which could cause some flash flooding issues through the early evening.

 



Update:
Weather Precipitation Discussion issued for northern Illinois and southern Wisconsin with the possibility for flash flooding. Storms will continue to develop and lift north over the next several hours with heavy rainfall. Rainfall rates between 1.5/2 inches per hour are forecast and this can lead to flash flooding. Especially to areas that have already seen a lot of rain. Never drive through a flooded roadway, turn around don't drown.





1PM UPDATE: General radar trends show the storms to be weakening and not posing much of a severe threat but heavy downpours will be with us as well a some gusty winds.





Noon update: Strong storm currently moving NNE
through Coleta and Sterling along 88 with heavy rainfall and wind gusts up to 50mph possible. This storm was
showing weak rotation so will monitor for a
possible funnel cloud.

Timeline for storms in Rockford, Loves Park, and Footville.

Shelf cloud moving into Rockford. Non -severe storm but heavy rain and gusty winds.

Heavy rain, gusty winds, and lots of lightning in Amboy with strong storm. 






10:36 UPDATE Severe Thunderstorm Warning for Carroll & Whiteside Counties until 11:15am. 60mph wind gusts & nickel sized hail.






Severe Thunderstorm Warning for Carroll Co until 10:45am hail possible and heavy rain.