2026-02-16T18:00:00-07:00
...PROLONGED PERIOD OF CRITICAL FIRE WEATHER CONDITIONS EARLY TO MID NEXT WEEK... .Recent dry conditions combining with above normal temperatures and much stronger winds early next week will bring potentially critical fire weather conditions Monday and Tuesday, possibly lasting into Wednesday. There is potential for extreme fire weather conditions on Tuesday as widespread strong and gusty winds to around 60 mph are expected. The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Monday morning through Monday afternoon. A Fire Weather Watch has also been issued from Tuesday morning through Tuesday evening. * AFFECTED AREA...Fire Weather Zones 216, 240, 241, 244, 245, 246, 247 and 249. * TIMING...For the first Fire Weather Watch, from late Monday morning through Monday afternoon. For the second Fire Weather Watch, from Tuesday morning through Tuesday evening. * WINDS...Southwest 15 to 25 mph with gusts to 35 mph on Monday. On Tuesday, west winds 30 to 40 mph with gusts around 60 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. There is potential for extreme fire weather conditions on Tuesday.
Summary
Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Winnebago River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Winnebago River, the highest being situated at an altitude of ft, the .
15-Day Weather Outlook
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Winnebago River At Mason City
USGS 05459500 |
166 cfs | 5.11 ft | -1.19 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Winnebago River is a 72-mile-long (116 km) river in northern Iowa. It is a tributary of the Shell Rock River, part of the Cedar River watershed that flows via the Iowa River to the Mississippi River. The Winnebago River rises in Winnebago County, Iowa, north of Leland and flows south through Forest City, then east and southeast through Mason City on its way to the Shell Rock River at Rockford. Headwater tributaries of the Winnebago River extend north into southern Minnesota.
The river was alternately known as Lime Creek, but upon the fame of Meredith Willson's The Music Man, which has a mythical River City widely known to be based on his native Mason City, the locals felt compelled to promote their creek to a river. The U.S. Board on Geographic Names made "Winnebago River" the official name in a 1961 decision. It also runs through Mason City, Iowa.
In 2008, the Winnebago River was subjected to flood waters reaching 18.74 feet. This was the highest flood water stage in recorded history for the Winnebago River. The peak of 18.74 feet was reached on June 8, 2008. The flooding was part in due to severe rainfall in the river's basin between May 29 and June 12 of that year. Iowa had a state average of 9.03 inches during those fourteen days. The normal statewide average for that time is 2.45 inches. According to the USGS report, 77 homes were damaged in Cerro Gordo county, where the Winnebago River runs through Mason City and flows into the Shell Rock River. The damages from the flood in Cerro Gordo county reached an estimated $3 million, while the total damage along the Cedar River and Iowa River basin reached over $495 million. The hardest hit counties were Linn and Johnson counties.