Missouri Water Alerts — 25 Active Issues
Data source: NWS, EPA SDWIS Last verified: 2026-04-30
25 active water-related issues in Missouri. Last updated: 2026-04-30.
Weather & Safety Alerts (25)
Active alerts from the National Weather Service that may affect water safety:
Flood Warning — Severe
Areas: St. Clair, IL; St. Louis, MO; St. Louis City, MO
Flood Warning issued April 29 at 9:38PM CDT until May 3 at 5:00AM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Madison, IL; St. Charles, MO
Flood Warning issued April 29 at 9:38PM CDT until May 4 at 4:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Monroe, IL; Jefferson, MO
Flood Warning issued April 29 at 9:38PM CDT until May 3 at 10:36PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Jersey, IL; St. Charles, MO
Flood Warning issued April 29 at 9:38PM CDT until May 4 at 10:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Madison, IL; St. Charles, MO
Flood Warning issued April 29 at 9:38PM CDT until May 2 at 10:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Jackson, IL; Randolph, IL; Perry, MO; Ste. Genevieve, MO
Flood Warning issued April 29 at 9:38PM CDT until May 6 at 11:48AM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Pike, IL; Ralls, MO
Flood Warning issued April 29 at 9:28PM CDT until May 2 at 7:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Adams, IL; Lewis, MO
Flood Warning issued April 29 at 9:28PM CDT until May 1 at 2:50AM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Pike, IL; Pike, MO
Flood Warning issued April 29 at 9:28PM CDT until May 4 at 10:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Pike, IL; Marion, MO
Flood Warning issued April 29 at 9:28PM CDT until May 3 at 7:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Calhoun, IL; Pike, MO
Flood Warning issued April 29 at 9:28PM CDT until May 4 at 3:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Calhoun, IL; Lincoln, MO
Flood Warning issued April 29 at 9:28PM CDT until May 4 at 4:00PM CDT by NWS St Louis MO
Expires: May 1, 2026
Flood Warning — Severe
Areas: Hancock, IL; Clark, MO
Flood Warning issued April 29 at 8:50PM CDT until April 30 at 7:00PM CDT by NWS Quad Cities IA IL
Expires: May 1, 2026
Flood Warning — Severe
Areas: Alexander, IL; Jackson, IL; Union, IL; Cape Girardeau, MO; Perry, MO; Scott, MO
Flood Warning issued April 29 at 12:20PM CDT until May 6 at 11:17AM CDT by NWS Paducah KY
Expires: April 30, 2026
Flood Warning — Severe
Areas: Alexander, IL; Scott, MO
Flood Warning issued April 29 at 12:20PM CDT until May 6 at 1:00AM CDT by NWS Paducah KY
Expires: April 30, 2026
...and 10 more alerts. See full weather alerts for details.
High-Risk Areas (Forecast)
ZIP codes in Missouri with the highest probability of future violations:
| ZIP | City | 2-Year Probability | Trend |
|---|---|---|---|
| 63005 | Chesterfield | 95% | declining |
| 63006 | Chesterfield | 95% | declining |
| 63010 | Arnold | 95% | declining |
| 63013 | Beaufort | 95% | increasing |
| 63016 | Cedar Hill | 95% | increasing |
| 63017 | Chesterfield | 95% | declining |
| 63019 | Crystal City | 95% | declining |
| 63020 | De Soto | 95% | declining |
| 63025 | Eureka | 95% | increasing |
| 63026 | Fenton | 95% | declining |
Sources
- Weather alerts: National Weather Service
- Violations & enforcement: EPA SDWIS
- Compliance forecasts: ZipCheckup analysis
This page is regenerated daily. For real-time weather, visit weather.gov.