Jefferson County, New York 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 WarningWed, Sep 2, 8:59 PM EDT
2. Severe Thunderstorm WarningFri, Aug 14, 3:25 PM EDT
3. Severe Thunderstorm WarningFri, Aug 14, 2:57 PM EDT
4. Severe Thunderstorm WarningTue, Jul 21, 1:26 PM EDT
5. Severe Thunderstorm WarningWed, Jul 1, 8:57 PM EDT
6. Severe Thunderstorm WarningWed, Jul 1, 8:36 PM EDT
7. Severe Thunderstorm WarningWed, Jul 1, 8:03 PM EDT
8. Severe Thunderstorm WarningTue, Jun 30, 11:30 PM EDT
9. Severe Thunderstorm WarningTue, Jun 30, 10:42 PM EDT
10. Severe Thunderstorm WarningTue, Jun 30, 1:56 PM EDT
11. Severe Thunderstorm WarningTue, Jun 30, 12:35 PM EDT
12. Severe Thunderstorm WarningFri, Jun 26, 5:43 AM EDT
13. Lakeshore Flood WarningThu, Jun 18, 2:00 PM EDT
14. High Wind WarningThu, Jun 18, 2:00 AM EDT
15. Severe Thunderstorm WarningTue, May 19, 10:44 PM EDT
16. Tornado WarningWed, May 13, 5:07 PM EDT
17. Severe Thunderstorm WarningWed, May 13, 4:49 PM EDT
18. Freeze WarningTue, May 12, 12:00 AM EDT
19. Severe Thunderstorm WarningTue, Apr 14, 11:14 AM EDT
20. Severe Thunderstorm WarningTue, Apr 14, 10:27 AM EDT
21. Flood WarningFri, Apr 3, 12:48 AM EDT
22. Flood WarningWed, Apr 1, 2:00 AM EDT
23. Lake Effect Snow WarningMon, Mar 16, 9:00 PM EDT
24. High Wind WarningSun, Mar 15, 5:00 PM EDT
25. Winter Storm WarningFri, Mar 13, 11:00 AM EDT
26. Flood WarningThu, Mar 12, 3:23 AM EDT
27. Extreme Cold WarningSat, Feb 7, 7:00 AM EST
28. Extreme Cold WarningThu, Jan 29, 7:00 PM EST
29. Lake Effect Snow WarningTue, Jan 27, 7:00 AM EST
30. Winter Storm WarningSun, Jan 25, 7:00 AM EST
31. Extreme Cold WarningFri, Jan 23, 7:00 PM EST
32. Winter Storm WarningSun, Jan 18, 7:00 AM EST
33. Winter Storm WarningWed, Jan 14, 12:49 PM EST
34. Winter Storm WarningMon, Dec 29, 4:00 PM EST
35. High Wind WarningMon, Dec 29, 7:00 AM EST
36. High Wind WarningThu, Dec 18, 7:00 PM EST
37. Lake Effect Snow WarningMon, Dec 15, 7:00 AM EST
38. Lake Effect Snow WarningSat, Dec 13, 1:00 PM EST
39. Winter Storm WarningWed, Dec 10, 4:00 AM EST
40. Lake Effect Snow WarningThu, Nov 27, 1:00 AM EST
41. Freeze WarningThu, Oct 9, 11:00 PM EDT
42. Freeze WarningThu, Oct 9, 12:00 AM EDT

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.

• Lewis CountyNone
• Oswego CountyNone
• St. Lawrence 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.