Montgomery County, MD Weather Alerts
Every National Weather Service alert issued for Montgomery County, Maryland, pushed to your phone within moments — county code MDC031, forecast zone 2 zones (MDZ504, MDZ503). Free with StormCast.
Download on Google PlayHow the NWS identifies Montgomery County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches MDC031 directly rather than matching on place names, which is why an alert arrives whether you are in Ashton or anywhere else in the county.
NWS County Code
MDC031
Forecast Zones
2 zones (MDZ504, MDZ503)
Forecast Office
Sterling (LWX)
Radar Station
KLWX
Towns covered in Montgomery County
An NWS alert for Montgomery County applies to all 30 of these communities. You do not need a separate alert for each one.
River gauges in and around Montgomery County
StormCast tracks 12 gauges near Montgomery County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- Turkey Branch near Aspen Hill
- Northwest Branch at Kemp Mill
- Little Seneca Creek Tributary at Brink, MD
- Paint Branch Tributary Near Colesville, MD
- Little Seneca Creek Tributary Near Germantown, MD
- Cabin Branch Near Boyds, MD - 01644380
- LITTLE SENECA CREEK TRIBUTARY NEAR CLARKSBURG, MD
- Seneca Creek at Dawsonville
- Ten Mile Creek near Boyds
- Ten Mile Creek near Clarksburg
- Potomac River near Washington DC (Little Falls)
- Potomac River at Edwards Ferry
Current conditions
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Alert types issued for Montgomery 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 →Montgomery County weather alert questions
Which NWS forecast zone is Montgomery County in?
Montgomery County, Maryland is NWS county code MDC031 and spans 2 forecast zones (MDZ504, MDZ503). Alerts for it are issued by the Sterling (LWX) Weather Forecast Office, and the nearest NEXRAD radar is KLWX.
Which towns in Montgomery County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Montgomery County covers every community inside it, including Ashton, Barnesville, Beallsville, Bethesda, Boyds, Brinklow, Brookeville, Burtonsville, Cabin John, Chevy Chase, Clarksburg, Damascus, Derwood, Dickerson, Gaithersburg, Garrett Park, Germantown, Glen Echo, Kensington, Montgomery Village, Olney, Poolesville, Potomac, Rockville, Sandy Spring, Silver Spring, Spencerville, Suburb Maryland Fac, Takoma Park and Washington Grove.
Are there river gauges in Montgomery County?
Yes — StormCast monitors 12 river gauges in and around Montgomery County, including Turkey Branch near Aspen Hill, Northwest Branch at Kemp Mill, Little Seneca Creek Tributary at Brink, MD. 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 Montgomery County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for MDC031, the push notification goes out within moments — even with your screen off.