| - | Message 1's have been issued for the entire District and will continue valid until midnight and possibly beyond. There are some signs that thunderstorm activity may persist and continue well past midnight into the early morning hours on Thursday resulting in Message 1's possibly being extended late this evening. |
| - | Although conditions have been quiet up to this point a cold front is expected to move through this evening and increase surface moisture from already elevated levels. Thunderstorms that develop later today and tonight will be very capable of producing heavy rainfall that may lead to excessive runoff. |
| - | Best chances for stronger thunderstorms will likely be after 7 or 8pm through about midnight. Additional rain showers and more isolated thunderstorms will remain possible into the overnight period. |
WORST CASE SCENARIO: A slower moving thunderstorm or anchored thunderstorm has the potential to produce up to 2.6" of heavy rainfall in 45-75 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Arapahoe |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Boulder |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Broomfield |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Denver |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Douglas |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Jefferson |
600 PM TO
1159 PM |
0.1" (80%) to 0.5" (50%) to 1.5" (20%) | |
| Foothills above 6500ft | |||
| Boulder |
Current TO
1159 PM WED |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Douglas |
Current TO
1159 PM WED |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Jefferson |
Current TO
1159 PM WED |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.