Flash Flood Threat Increasing

A Flash Flood warning remains in effect for eastern Winnebago County until 9:45 PM. Scattered thunderstorms continue to move over northern Illinois producing heavy rainfall, with rainfall rates up to one inch per hour.

A new Flood Warning has been issued for Boone and McHenry counties until 9:30 PM tonight. Repeated rounds of heavy rain can produce flooding on already saturated ground.









RAINFALL REPORTS:

(9:52:58 PM) nwsbot: Local Storm Report by NWS DVN: Freeport [Stephenson Co, IL] trained spotter reports HEAVY RAIN of E1.65 INCH at 09:50 PM CDT -- total rainfall since 6 am today.

(9:17:20 PM) nwsbot: Local Storm Report by NWS LOT: 1 E Rockford [Winnebago Co, IL] trained spotter reports HEAVY RAIN of M3.00 INCH at 09:16 PM CDT -- standing water in yards and low lying areas 6 inches to a foot in spots. water starting to recede.

(7:42:22 PM) nwsbot: Local Storm Report by NWS LOT: 1 W Rockford [Winnebago Co, IL] law enforcement reports FLASH FLOOD at 06:30 PM CDT -- north central avenue was impassable due to flood from rainfall from 530 to 630.

 (2:43:31 PM) nwsbot: Local Storm Report by NWS LOT: 1 E Rockford [Winnebago Co, IL] trained spotter reports HEAVY RAIN of M1.90 INCH at 02:38 PM CDT -- total today as of report time. 0.9 inches with morning round and 1 inch with afternoon round. some minor low lying flooding/ponding...including in backyards and on some roads.

 (3:28:12 PM) nwsbot: Local Storm Report by NWS LOT: 3 ENE Roscoe [Winnebago Co, IL] trained spotter reports HEAVY RAIN of M1.63 INCH at 03:25 PM CDT -- rainfall total so far today is 1.63 inches. 1.5 inches of that fell from 2pm to 3pm.

(3:39:19 PM) nwsbot: Local Storm Report by NWS LOT: 1 WSW Rockford [Winnebago Co, IL] broadcast media reports FLOOD at 02:30 PM CDT -- 6 to 10 inches of standing water on charles street and 9th street intersection. relayed via twitter.

 (4:47:04 PM) nwsbot: Local Storm Report by NWS LOT: 3 W Poplar Grove [Boone Co, IL] emergency mngr reports FLOOD at 04:31 PM CDT -- approximately 6 inches of standing water on route 173 east of wyman school road. same report also relayed by trained spotter via twitter.

(4:49:31 PM) nwsbot: Local Storm Report by NWS LOT: N Poplar Grove [Boone Co, IL] emergency mngr reports FLOOD at 04:40 PM CDT -- about 6 inches of standing water on route 173.

Storms that have passed through earlier Tuesday afternoon produced heavy rainfall, and with additional upcoming thunderstorms, flash flooding is a huge threat in our area. The ground is very saturated so with even more rainfall headed our way, that will cause incoming rain to runoff quickly. We have a Flash Flood Watch for our area through late tonight/early Wednesday morning.

Along with the Flash Flood Watch, there are flood advisories in the northern parts of Illinois due to these rain efficient storms. This advisory covers many local areas including Rockford, Woodstock, Wheeling, Burlington, Buffalo, DeKalb, Mount Morris, Buffalo and Rochelle. The Flood Advisory is valid until 7:30 PM this evening.

Several storms rolled through Tuesday afternoon and mother nature is not done with us yet. We are expecting more showers and thunderstorms as we go into this evening. These are progressive moving storms and they wont stick around for hours unlike the storms from last Monday. There is a push in the atmosphere that is making them move along quickly. Also, because there is a lot of moisture in the atmosphere, these systems will produce heavy downpours. Flooding from these storms will be our main threat for this evening.