Williamson County, Illinois weather alerts

Nothing is in force for Williamson 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 WarningSat, Sep 5, 6:56 PM CDT
2. Extreme Heat WarningTue, Sep 1, 11:46 AM CDT
3. Extreme Heat WarningThu, Aug 13, 2:43 AM CDT
4. Extreme Heat WarningSun, Jul 26, 11:00 AM CDT
5. Extreme Heat WarningTue, Jul 21, 11:00 AM CDT
6. Flood WarningSat, Jul 11, 7:26 AM CDT
7. Flash Flood WarningFri, Jul 10, 10:40 PM CDT
8. Severe Thunderstorm WarningFri, Jul 10, 7:53 PM CDT
9. Severe Thunderstorm WarningFri, Jul 10, 7:20 PM CDT
10. Flash Flood WarningFri, Jul 10, 12:31 AM CDT
11. Extreme Heat WarningMon, Jun 29, 11:00 AM CDT
12. Severe Thunderstorm WarningMon, Apr 27, 9:52 PM CDT
13. Severe Thunderstorm WarningMon, Apr 27, 9:16 AM CDT
14. Severe Thunderstorm WarningMon, Apr 27, 8:44 AM CDT
15. Severe Thunderstorm WarningMon, Apr 27, 8:21 AM CDT
16. Severe Thunderstorm WarningMon, Apr 27, 7:32 AM CDT
17. Severe Thunderstorm WarningMon, Apr 27, 6:53 AM CDT
18. Red Flag WarningSun, Mar 29, 1:31 PM CDT
19. Freeze WarningSat, Mar 28, 1:00 AM CDT
20. Tornado WarningSun, Mar 15, 7:15 PM CDT
21. Severe Thunderstorm WarningSun, Mar 15, 6:52 PM CDT
22. Tornado WarningSun, Mar 15, 6:42 PM CDT
23. Severe Thunderstorm WarningSun, Mar 15, 6:36 PM CDT
24. High Wind WarningSun, Mar 15, 10:45 AM CDT
25. Severe Thunderstorm WarningSat, Mar 7, 5:57 AM CST
26. Extreme Cold WarningMon, Jan 26, 12:00 AM CST
27. Winter Storm WarningSat, Jan 24, 12:00 AM CST
28. Severe Thunderstorm WarningSun, Dec 28, 5:44 PM CST
29. Severe Thunderstorm WarningSun, Dec 28, 5:15 PM CST

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.

• Franklin CountyNone
• Jackson CountyNone
• Johnson CountyNone
• Saline CountyNone
• Union 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.