Frederick County, MD Weather Alerts
Every National Weather Service alert issued for Frederick County, Maryland, pushed to your phone within moments — county code MDC021, forecast zone MDZ004. Free with StormCast.
Download on Google PlayHow the NWS identifies Frederick County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches MDC021 directly rather than matching on place names, which is why an alert arrives whether you are in Adamstown or anywhere else in the county.
NWS County Code
MDC021
Forecast Zone
MDZ004
Forecast Office
Sterling (LWX)
Radar Station
KLWX
Towns covered in Frederick County
An NWS alert for Frederick County applies to all 26 of these communities. You do not need a separate alert for each one.
River gauges in and around Frederick County
StormCast tracks 8 gauges near Frederick 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 Frederick 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 →Frederick County weather alert questions
Which NWS forecast zone is Frederick County in?
Frederick County, Maryland is NWS county code MDC021 and forecast zone MDZ004. Alerts for it are issued by the Sterling (LWX) Weather Forecast Office, and the nearest NEXRAD radar is KLWX.
Which towns in Frederick County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Frederick County covers every community inside it, including Adamstown, Braddock Heights, Brunswick, Buckeystown, Burkittsville, Emmitsburg, Frederick, Ijamsville, Jefferson, Knoxville, Ladiesburg, Libertytown, Middletown, Monrovia, Mount Airy, Myersville, New Market, New Midway, Point Of Rocks, Rocky Ridge, Sabillasville, Thurmont, Tuscarora, Unionville, Walkersville and Woodsboro.
Are there river gauges in Frederick County?
Yes — StormCast monitors 8 river gauges in and around Frederick County, including Monocacy River at Monocacy Blvd. in Frederick, Monocacy River near Frederick at Interstate 70, Catoctin Creek Near Middletown. 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 Frederick County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for MDC021, the push notification goes out within moments — even with your screen off.