Jefferson County, Colorado weather alerts

Nothing is in force for Jefferson County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.

Warnings issued

1. Severe Thunderstorm WarningSun, Aug 30, 2:10 PM MDT
2. Severe Thunderstorm WarningSun, Aug 30, 2:00 PM MDT
3. Severe Thunderstorm WarningSun, Aug 30, 1:53 PM MDT
4. Severe Thunderstorm WarningWed, Aug 26, 6:37 PM MDT
5. Severe Thunderstorm WarningSat, Aug 15, 1:26 PM MDT
6. Flash Flood WarningFri, Aug 14, 3:30 PM MDT
7. Flash Flood WarningThu, Aug 13, 4:00 PM MDT
8. Severe Thunderstorm WarningTue, Jul 28, 1:31 PM MDT
9. Severe Thunderstorm WarningFri, Jul 24, 5:05 PM MDT
10. Flash Flood WarningWed, Jul 22, 3:10 PM MDT
11. Red Flag WarningWed, Jul 1, 12:00 PM MDT
12. Red Flag WarningTue, Jun 30, 12:00 PM MDT
13. Red Flag WarningMon, Jun 29, 12:00 PM MDT
14. Red Flag WarningSun, Jun 28, 11:00 AM MDT
15. Red Flag WarningSat, Jun 27, 11:00 AM MDT
16. Severe Thunderstorm WarningFri, Jun 26, 1:57 PM MDT
17. Flood WarningThu, Jun 25, 2:54 AM MDT
18. Severe Thunderstorm WarningWed, Jun 24, 10:01 PM MDT
19. Severe Thunderstorm WarningWed, Jun 24, 9:26 PM MDT
20. Severe Thunderstorm WarningMon, Jun 8, 3:29 PM MDT
21. Severe Thunderstorm WarningMon, Jun 8, 3:14 PM MDT
22. Freeze WarningWed, May 6, 8:00 PM MDT
23. Winter Storm WarningTue, May 5, 12:00 PM MDT
24. Red Flag WarningFri, Apr 24, 11:00 AM MDT
25. Red Flag WarningThu, Apr 23, 11:00 AM MDT
26. Red Flag WarningWed, Apr 22, 10:00 AM MDT
27. Freeze WarningFri, Apr 17, 8:00 PM MDT
28. Red Flag WarningThu, Apr 16, 11:00 AM MDT
29. Red Flag WarningMon, Apr 13, 11:00 AM MDT
30. Red Flag WarningSun, Apr 12, 12:00 PM MDT
31. Red Flag WarningFri, Apr 3, 8:00 AM MDT
32. Red Flag WarningMon, Mar 30, 11:00 AM MDT
33. Red Flag WarningSat, Mar 21, 11:00 AM MDT
34. Red Flag WarningWed, Mar 18, 11:00 AM MDT
35. High Wind WarningMon, Mar 16, 5:00 AM MDT
36. Red Flag WarningSat, Mar 14, 11:00 AM MDT
37. Red Flag WarningFri, Mar 13, 11:00 AM MDT
38. Red Flag WarningThu, Mar 12, 11:00 AM MDT
39. High Wind WarningThu, Mar 12, 4:00 AM MDT
40. Red Flag WarningTue, Mar 10, 12:00 PM MDT
41. Winter Storm WarningFri, Mar 6, 12:00 AM MST
42. Red Flag WarningFri, Feb 27, 8:00 AM MST
43. Red Flag WarningWed, Feb 25, 10:00 AM MST
44. High Wind WarningTue, Feb 24, 8:00 AM MST
45. Red Flag WarningTue, Feb 24, 7:30 AM MST
46. High Wind WarningWed, Feb 18, 8:00 PM MST
47. Red Flag WarningTue, Feb 17, 10:00 AM MST
48. Red Flag WarningMon, Feb 16, 11:00 AM MST
49. Red Flag WarningFri, Jan 16, 11:00 AM MST
50. Red Flag WarningThu, Jan 15, 10:00 AM MST
51. Red Flag WarningTue, Jan 6, 8:00 AM MST
52. Red Flag WarningSun, Jan 4, 10:00 AM MST
53. Red Flag WarningMon, Dec 22, 8:00 AM MST
54. Red Flag WarningFri, Dec 19, 5:00 AM MST
55. High Wind WarningThu, Dec 18, 9:00 PM MST
56. Red Flag WarningWed, Dec 17, 11:00 AM MST
57. High Wind WarningWed, Dec 17, 8:00 AM MST
58. Red Flag WarningThu, Dec 11, 8:16 AM MST
59. High Wind WarningWed, Dec 10, 11:00 AM MST
60. High Wind WarningTue, Dec 9, 12:00 AM MST

And 6 earlier warnings.

From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.

• Adams CountyNone
• Arapahoe CountyNone
• Boulder CountyNone
• Broomfield CountyNone
• Clear Creek CountyNone
• Denver CountyNone
• Douglas CountyNone
• Gilpin CountyNone
• Park CountyNone

Warning

The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.

Watch

Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.

Advisory

A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.

Statement

Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.

Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.

Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.