NWS county zone COC069

Larimer weather alerts

Public weather alerts linked to this verified National Weather Service zone.

NWS feedSource freshLast successful check: Aug 2, 2026, 2:03 AM UTC

Current answer

2 active alerts

Open official zone data

Active Official severity: Unknown

Air Quality Alert for Adams, CO; Arapahoe, CO; Weld, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Until Aug 2, 2026, 10:00 PM UTC

Active Official severity: Unknown

Air Quality Alert for Broomfield, CO; Jefferson, CO; Adams, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Until Aug 2, 2026, 10:00 PM UTC

Official zone ID: COC069
Zone type: county
State: Colorado
Metadata verified: Yes, from NWS

Context only

Recently ended alerts

Ended Official severity: Severe

Severe Thunderstorm Warning for Northwest Boulder, CO; Northeast Boulder, CO; Larimer, CO

Boulder, Larimer

Ended Jul 28, 2026, 8:22 PM UTC

Ended Official severity: Severe

Severe Thunderstorm Warning for Larimer, CO; Weld, CO

Ended Jul 22, 2026, 6:22 AM UTC

Ended Official severity: Severe

Severe Thunderstorm Warning for Grand, CO; Jackson, CO; Larimer, CO

Grand, Jackson, Larimer

Ended Jul 22, 2026, 12:45 AM UTC

Ended Official severity: Severe

Flash Flood Warning for Larimer, CO

Ended Jul 28, 2026, 9:37 PM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 30, 2026, 12:15 AM UTC

Ended Official severity: Minor

Flood Advisory for Boulder, CO; Larimer, CO

Boulder, Larimer

Ended Jul 28, 2026, 11:00 PM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 28, 2026, 7:27 PM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 28, 2026, 7:27 PM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 24, 2026, 3:45 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 11:15 PM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 10:30 PM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 23, 2026, 12:15 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 6:15 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 9:00 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 3:15 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 4:30 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 22, 2026, 3:15 AM UTC

Ended Official severity: Minor

Flood Advisory for Larimer, CO

Ended Jul 20, 2026, 10:30 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Denver, CO; Boulder, CO; Jefferson, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Aug 1, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Boulder, CO; Jefferson, CO; Adams, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 31, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Douglas, CO; Denver, CO; Jefferson, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 30, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Larimer, CO; Douglas, CO; Weld, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 28, 2026, 6:00 AM UTC

Ended Official severity: Unknown

Air Quality Alert for Douglas, CO; Denver, CO; Larimer, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 28, 2026, 6:00 AM UTC

Ended Official severity: Unknown

Air Quality Alert for Boulder, CO; Larimer, CO; Adams, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 28, 2026, 6:00 AM UTC

Ended Official severity: Unknown

Air Quality Alert for Larimer, CO; Arapahoe, CO; Boulder, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 27, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Douglas, CO; Boulder, CO; Arapahoe, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 26, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Jefferson, CO; Boulder, CO; Douglas, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 25, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Arapahoe, CO; Jefferson, CO; Denver, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 24, 2026, 10:00 PM UTC

Ended Official severity: Unknown

Air Quality Alert for Jefferson, CO; Weld, CO; Arapahoe, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 23, 2026, 6:00 AM UTC

Ended Official severity: Unknown

Air Quality Alert for Jefferson, CO; Adams, CO; Denver, CO +6 more

Adams, Arapahoe, Boulder and 6 more

Ended Jul 22, 2026, 10:00 PM UTC

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