| Message 1’s have been issued for the entire District and will be valid until midnight. Thunderstorms are prevalent over the Front Range foothills and upper level steering winds will push these storms onto the plains as the evening progresses. These thunderstorms may dissipate on approach but may also produce an outflow boundary, or a new trigger for thunderstorm development further eastward within the District. The scenario will play out over the next few hours… Should a strong thunderstorm develop, it will be capable of producing heavy rainfall and hail. With the ground at or near saturation in many areas of the District it may not take as much rain to produce excessive runoff and possibly flash flooding. |
WORST CASE SCENARIO: A slower moving strong thunderstorm or training of thunderstorm cells may result in up to 1.8” of rain in 45-75 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
Current TO
1159 PM THU |
0.1" (75%) to 0.4" (40%) to 1" (15%) | |
| Arapahoe |
Current TO
1159 PM THU |
0.1" (75%) to 0.4" (40%) to 1" (15%) | |
| Boulder |
Current TO
1159 PM THU |
0.1" (80%) to 0.4" (50%) to 1" (20%) | |
| Broomfield |
Current TO
1159 PM THU |
0.1" (80%) to 0.4" (50%) to 1" (20%) | |
| Denver |
Current TO
1159 PM THU |
0.1" (75%) to 0.4" (40%) to 1" (15%) | |
| Douglas |
Current TO
1159 PM THU |
0.1" (80%) to 0.4" (50%) to 1" (20%) | |
| Jefferson |
Current TO
1159 PM THU |
0.1" (80%) to 0.4" (50%) to 1" (20%) | |
| Foothills above 6500ft | |||
| Boulder |
Current TO
1159 PM THU |
0.1" (90%) to 0.4" (60%) to 1" (25%) | |
| Douglas |
Current TO
1159 PM THU |
0.1" (90%) to 0.4" (60%) to 1" (25%) | |
| Jefferson |
Current TO
1159 PM THU |
0.1" (90%) to 0.4" (60%) to 1" (25%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.