Jefferson County, Missouri 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, Sep 20, 10:47 PM CDT
2. Severe Thunderstorm WarningWed, Sep 9, 11:37 PM CDT
3. Extreme Heat WarningThu, Sep 3, 12:12 AM CDT
4. Severe Thunderstorm WarningWed, Aug 12, 5:43 PM CDT
5. Extreme Heat WarningSun, Aug 9, 12:00 PM CDT
6. Extreme Heat WarningSun, Jul 26, 11:00 AM CDT
7. Flood WarningSun, Jul 12, 6:08 PM CDT
8. Severe Thunderstorm WarningSat, Jul 4, 3:47 PM CDT
9. Extreme Heat WarningSun, Jun 28, 12:00 PM CDT
10. Flood WarningTue, Jun 16, 10:00 AM CDT
11. Severe Thunderstorm WarningThu, Jun 11, 9:40 PM CDT
12. Flash Flood WarningMon, Jun 8, 10:32 AM CDT
13. Flash Flood WarningMon, May 18, 5:06 PM CDT
14. Flood WarningWed, Apr 29, 9:00 PM CDT
15. Flood WarningWed, Apr 29, 2:30 AM CDT
16. Severe Thunderstorm WarningMon, Apr 27, 6:40 PM CDT
17. Tornado WarningMon, Apr 27, 6:31 PM CDT
18. Severe Thunderstorm WarningMon, Apr 27, 6:26 PM CDT
19. Flood WarningTue, Apr 21, 1:00 AM CDT
20. Severe Thunderstorm WarningWed, Apr 15, 10:15 PM CDT
21. Freeze WarningSat, Mar 28, 1:00 AM CDT
22. Severe Thunderstorm WarningSun, Mar 15, 4:28 PM CDT
23. Severe Thunderstorm WarningWed, Mar 11, 4:35 AM CDT
24. Flood WarningMon, Mar 9, 9:51 PM CDT
25. Flood WarningMon, Mar 9, 1:00 AM CDT
26. Flood WarningSun, Mar 8, 4:25 PM CDT
27. Flood WarningSat, Mar 7, 4:09 PM CST
28. Flood WarningSat, Mar 7, 1:36 PM CST
29. Flood WarningSat, Mar 7, 10:07 AM CST
30. Flood WarningFri, Mar 6, 12:24 AM CST
31. Extreme Cold WarningMon, Jan 26, 12:00 AM CST
32. Winter Storm WarningSat, Jan 24, 12:00 AM CST
33. Freeze WarningSun, Nov 2, 1:00 AM CST
34. Severe Thunderstorm WarningSat, Oct 18, 3:08 PM CDT

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 links to the alert's own page, with its text, map, radar and sounding.

Every alert in Jefferson County since 1986

• Franklin CountyNone
• Monroe County, ILNone
• Saint Francois CountyNone
• Saint Louis CountyNone
• Sainte Genevieve CountyNone
• Washington 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.