Olmsted County, MN Weather Alerts
Every National Weather Service alert issued for Olmsted County, Minnesota, pushed to your phone within moments — county code MNC109, forecast zone MNZ087. Free with StormCast.
Download on Google PlayHow the NWS identifies Olmsted County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches MNC109 directly rather than matching on place names, which is why an alert arrives whether you are in Byron or anywhere else in the county.
NWS County Code
MNC109
Forecast Zone
MNZ087
Forecast Office
La Crosse (ARX)
Radar Station
KARX
Towns covered in Olmsted County
An NWS alert for Olmsted County applies to all 6 of these communities. You do not need a separate alert for each one.
River gauges in and around Olmsted County
StormCast tracks 11 gauges near Olmsted County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- Silver Creek (MN) near Rochester
- Bear Creek (MN) near Rochester
- Cascade Creek at Rochester
- South Fork Zumbro River at Rochester Beltline
- South Fork Zumbro River at Rochester
- Cascade Creek near Rochester
- South Fork Zumbro River near Oronoco
- South Fork Zumbro River near Rochester
- South Branch Middle Fork Zumbro River at Oronoco
- North Branch Middle Fork Zumbro River near Oronoco 1W
- Middle Fork Whitewater River near Whitewater State Park
Current conditions
Loading current conditions…
Alert types issued for Olmsted County
Tornado
Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.
How tornado alerts work →Flooding
Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.
How flood alerts work →Winter
Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.
Winter warnings explained →Fire Weather
Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.
Fire weather alerts →Heat & Cold
Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.
Frost & freeze alerts →Olmsted County weather alert questions
Which NWS forecast zone is Olmsted County in?
Olmsted County, Minnesota is NWS county code MNC109 and forecast zone MNZ087. Alerts for it are issued by the La Crosse (ARX) Weather Forecast Office, and the nearest NEXRAD radar is KARX.
Which towns in Olmsted County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Olmsted County covers every community inside it, including Byron, Dover, Eyota, Oronoco, Rochester and Stewartville.
Are there river gauges in Olmsted County?
Yes — StormCast monitors 11 river gauges in and around Olmsted County, including Silver Creek (MN) near Rochester, Bear Creek (MN) near Rochester, Cascade Creek at Rochester. You can set a flood-stage alert on any of them and get a push notification when the water rises.
How fast are alerts for Olmsted County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for MNC109, the push notification goes out within moments — even with your screen off.