Loudoun County, VA Weather Alerts
Every National Weather Service alert issued for Loudoun County, Virginia, pushed to your phone within moments — county code VAC107, forecast zone 2 zones (VAZ505, VAZ506). Free with StormCast.
Download on Google PlayHow the NWS identifies Loudoun County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches VAC107 directly rather than matching on place names, which is why an alert arrives whether you are in Aldie or anywhere else in the county.
NWS County Code
VAC107
Forecast Zones
2 zones (VAZ505, VAZ506)
Forecast Office
Sterling (LWX)
Radar Station
KLWX
Towns covered in Loudoun County
An NWS alert for Loudoun County applies to all 16 of these communities. You do not need a separate alert for each one.
River gauges in and around Loudoun County
StormCast tracks 10 gauges near Loudoun County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- Goose Creek near Leesburg
- North Fork Goose Creek near Lincoln
- Beaverdam Creek near Mountville
- Limestone Branch near Leesburg
- South Fork Catoctin Creek near Waterford
- North Fork Catoctin Creek near Waterford
- Broad Run near Sterling
- Goose Creek near Middleburg
- Catoctin Creek at Taylorstown
- Piney Run (VA) near Lovettsville
Current conditions
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Alert types issued for Loudoun 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 →Loudoun County weather alert questions
Which NWS forecast zone is Loudoun County in?
Loudoun County, Virginia is NWS county code VAC107 and spans 2 forecast zones (VAZ505, VAZ506). Alerts for it are issued by the Sterling (LWX) Weather Forecast Office, and the nearest NEXRAD radar is KLWX.
Which towns in Loudoun County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Loudoun County covers every community inside it, including Aldie, Arcola, Ashburn, Chantilly, Dulles, Hamilton, Leesburg, Lincoln, Lovettsville, Middleburg, Paeonian Springs, Philomont, Purcellville, Round Hill, Sterling and Waterford.
Are there river gauges in Loudoun County?
Yes — StormCast monitors 10 river gauges in and around Loudoun County, including Goose Creek near Leesburg, North Fork Goose Creek near Lincoln, Beaverdam Creek near Mountville. 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 Loudoun County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for VAC107, the push notification goes out within moments — even with your screen off.