Alert archive / Illinois / River Flood Warnings in 2017
River Flood Warning 81, NWS Chicago, IL
NWS Chicago, IL issued this river flood warning at May 10, 2017, 9:56 AM CDT for Iroquois County, Illinois. It took effect at May 11, 2017, 1:00 PM CDT. It was in force for 45 hr.
The area
The counties it named.
The facts
- Issued
- May 10, 2017, 9:56 AM CDT (14:56 UTC)
- In effect from
- May 11, 2017, 1:00 PM CDT
- Expired
- May 13, 2017, 10:00 AM CDT
- In force
- 45 hr
- Issued by
- NWS Chicago, IL
- Area
- Storm-based polygon
- Flood severity
- Minor
County Iroquois County, IL
The radar
The Chicago radar (KLOT), 98 km from the middle of the area, began a volume at 15:02 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 Iroquois River at Iroquois (IRQI2). The gauge peaked at 17.89 ft at May 10, 2017, 2:00 AM CDT.
- Action stage
- 17 ft
- Minor stage
- 18 ft
- Moderate stage
- 24 ft
- Major stage
- 25 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05525000, 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 9:08 PM CDT | River Flood Warning | LOT | Iroquois | 38 hr |
| May 10, 9:33 AM CDT | River Flood Advisory | LOT | Grundy, Will | 36 hr |
| May 10, 10:37 AM CDT | River Flood Advisory | LOT | Iroquois | 3 days |
| May 10, 11:35 AM CDT | River Flood Advisory | LOT | Grundy | 52 hr |
| May 10, 12:00 PM CDT | River Flood Watch | LOT | LaSalle | 3 days |
| May 10, 9:29 AM CDT | River Flood Advisory | LOT | Newton | 36 hr |
Nearby
River Flood Warnings in Illinois, 2017Every river flood warning in 2017
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.