| - | Message 1's have been issued for all areas of the District EXCEPT Boulder and Broomfield Counties at this time. Boulder and Broomfield Counties may be included over the next hour. |
| - | An outflow boundary has moved into the District and is beginning to initiate thunderstorm development along the I-25 corridor S of I-70 currently. These storms are expected to become stronger and will have the potential to produce heavy rainfall this evening and overnight. |
| - | Best chances for thunderstorm activity will be along and E of the I-25 corridor where moisture is deeper with a lesser chance for strong storms further W, but conditions may evolve. Best chances for thunderstorms will be until about 2am Friday morning. Should thunderstorm activity linger through 3am, Message 1's may need to be extended. |
WORST CASE SCENARIO: A nearly stationary strong thunderstorm may result in up to 2.5" of heavy rain in 45-60 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
Current TO
300 AM FRI |
0.2" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Arapahoe |
Current TO
300 AM FRI |
0.2" (100%) to 0.5" (80%) to 1.5" (40%) | |
| Boulder |
Current TO
300 AM FRI |
0.2" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Broomfield |
Current TO
300 AM FRI |
0.2" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Denver |
Current TO
300 AM FRI |
0.2" (100%) to 0.5" (80%) to 1.5" (40%) | |
| Douglas |
Current TO
300 AM FRI |
0.2" (100%) to 0.5" (80%) to 1.5" (40%) | |
| Jefferson |
Current TO
300 AM FRI |
0.2" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Foothills above 6500ft | |||
| Boulder |
Current TO
300 AM FRI |
0.2" (60%) to 0.5" (40%) to 1.5" (20%) | |
| Douglas |
Current TO
300 AM FRI |
0.2" (100%) to 0.5" (80%) to 1.5" (40%) | |
| Jefferson |
Current TO
300 AM FRI |
0.2" (80%) to 0.5" (50%) to 1.5" (25%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.