Mercer County, IL Weather Alerts
Every National Weather Service alert issued for Mercer County, Illinois, pushed to your phone within moments — county code ILC131, forecast zone 2 zones (ILZ024, ILZ026). Free with StormCast.
Download on Google PlayHow the NWS identifies Mercer County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches ILC131 directly rather than matching on place names, which is why an alert arrives whether you are in Aledo or anywhere else in the county.
NWS County Code
ILC131
Forecast Zones
2 zones (ILZ024, ILZ026)
Forecast Office
Davenport (DVN)
Radar Station
KDVN
Towns covered in Mercer County
An NWS alert for Mercer County applies to all 12 of these communities. You do not need a separate alert for each one.
River gauges in and around Mercer County
StormCast tracks 5 gauges near Mercer County. Set a flood-stage alert on any of them to get notified before the water reaches you.
Current conditions
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Alert types issued for Mercer 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 →Mercer County weather alert questions
Which NWS forecast zone is Mercer County in?
Mercer County, Illinois is NWS county code ILC131 and spans 2 forecast zones (ILZ024, ILZ026). Alerts for it are issued by the Davenport (DVN) Weather Forecast Office, and the nearest NEXRAD radar is KDVN.
Which towns in Mercer County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Mercer County covers every community inside it, including Aledo, Alexis, Joy, Keithsburg, Matherville, New Boston, New Windsor, North Henderson, Preemption, Seaton, Sherrard and Viola.
Are there river gauges in Mercer County?
Yes — StormCast monitors 5 river gauges in and around Mercer County, including Pope Creek near Keithsburg, Edwards River near New Boston, Mississippi River at Keithsburg. 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 Mercer County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for ILC131, the push notification goes out within moments — even with your screen off.