Alert archive / Illinois / River Flood Advisories in 2020

River Flood Advisory 21, NWS Chicago, IL

March 19, 2020Winnebago County, Illinois

NWS Chicago, IL issued this river flood advisory at Mar 19, 2020, 10:39 AM CDT for Winnebago County, Illinois. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued
Mar 19, 2020, 10:39 AM CDT (15:39 UTC)
Expired
Mar 20, 2020, 6:35 AM CDT
In force
20 hr
Issued by
NWS Chicago, IL
Area
Storm-based polygon

County Winnebago County, IL

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 15:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Rock River at Rockton (ROKI2). The gauge peaked at 9.21 ft at Mar 21, 2020, 6:00 AM CDT.

actionminormoderate8101203/1903/2003/21
Action stage
8.5 ft
Minor stage
10 ft
Moderate stage
11 ft
Major stage
14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05437500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 18, 9:33 PM CDTRiver Flood WatchLOTLaSalle37 hr
Mar 19, 4:58 AM CDTMarine Dense Fog AdvisoryLOT14 hr
Mar 19, 6:41 AM CDTDense Fog AdvisoryLOTBoone, Cook, DeKalb, DuPage, Kane, Lake and 4 more3 hr
Mar 19, 8:51 AM CDTRiver Flood AdvisoryLOTIroquois43 hr
Mar 19, 10:07 AM CDTDense Fog AdvisoryLOTLake113 min
Mar 19, 10:34 AM CDTRiver Flood WatchLOTWinnebago10 hr
Mar 19, 10:39 AM CDTRiver Flood AdvisoryLOTWinnebago21 days
Mar 19, 10:39 AM CDTRiver Flood AdvisoryLOTOgle21 days
Mar 19, 11:27 AM CDTRiver Flood AdvisoryLOTLaSalle23 hr
Mar 19, 3:59 PM CDTLakeshore Flood AdvisoryLOTCook39 hr
Mar 19, 3:48 AM CDTLakeshore Flood WatchLOTLake, Porter12 hr

Nearby

River Flood Advisories in Illinois, 2020Every river flood advisory in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.