Boulder County, CO Weather Alerts
Every National Weather Service alert issued for Boulder County, Colorado, pushed to your phone within moments — county code COC013, forecast zone 3 zones (COZ039, COZ035, COZ034). Free with StormCast.
Download on Google PlayHow the NWS identifies Boulder County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches COC013 directly rather than matching on place names, which is why an alert arrives whether you are in Allenspark or anywhere else in the county.
NWS County Code
COC013
Forecast Zones
3 zones (COZ039, COZ035, COZ034)
Forecast Office
Boulder (BOU)
Radar Station
KFTG
Towns covered in Boulder County
An NWS alert for Boulder County applies to all 14 of these communities. You do not need a separate alert for each one.
River gauges in and around Boulder County
StormCast tracks 12 gauges near Boulder County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- Boulder Creek (CO) at Boulder
- Left Hand Creek (CO) below Jamestown
- Boulder Creek (CO) below Boulder
- Boulder Creek (CO) near Orodell
- Boulder Creek (CO) below Nederland
- South Boulder Creek (CO) below Eldorado Springs
- South Saint Vrain Creek (CO) above Lyons
- Saint Vrain Creek at Hygiene
- South Boulder Creek (CO) above Eldorado Springs
- Saint Vrain Creek at Lyons
- North Saint Vrain Creek (CO) above Lyons
- Saint Vrain Creek below Longmont
Current conditions
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Alert types issued for Boulder 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 →Boulder County weather alert questions
Which NWS forecast zone is Boulder County in?
Boulder County, Colorado is NWS county code COC013 and spans 3 forecast zones (COZ039, COZ035, COZ034). Alerts for it are issued by the Boulder (BOU) Weather Forecast Office, and the nearest NEXRAD radar is KFTG.
Which towns in Boulder County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Boulder County covers every community inside it, including Allenspark, Boulder, Eldorado Springs, Erie, Hygiene, Jamestown, Lafayette, Longmont, Louisville, Lyons, Nederland, Niwot, Pinecliffe and Ward.
Are there river gauges in Boulder County?
Yes — StormCast monitors 12 river gauges in and around Boulder County, including Boulder Creek (CO) at Boulder, Left Hand Creek (CO) below Jamestown, Boulder Creek (CO) below Boulder. 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 Boulder County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for COC013, the push notification goes out within moments — even with your screen off.