| - | Message 1's have been issued for the entire District and will be valid until 10pm this evening. |
| - | Thunderstorms are beginning to initiate over the higher terrain to the W of the District currently. Upper level steering winds from W to E at around 20mph will push the storms eastward onto the plains as the afternoon progresses. As the storms move onto the lower elevations they will encounter a moist airmass and be capable of producing heavy rainfall. Multiple rounds (1-3) of thunderstorms are expected into the evening. |
| - | Training of thunderstorm cells or a large, slower moving thunderstorm will produce the greatest risk for extended periods of heavy rainfall that may lead to excessive runoff and possibly flash flooding. Most storms will move fast enough from W to E to keep the heavy rainfall relatively brief. |
WORST CASE SCENARIO: Training of thunderstorm cells or a large/slower moving thunderstorm may result in up to 1.6" of rain in 45-60 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Arapahoe |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Boulder |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Broomfield |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Denver |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Douglas |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Jefferson |
100 PM TO
1000 PM |
0.1" (85%) to 0.3" (60%) to 0.8" (30%) | |
| Foothills above 6500ft | |||
| Boulder |
Current TO
1000 PM SAT |
0.1" (95%) to 0.3" (60%) to 0.8" (20%) | |
| Douglas |
Current TO
1000 PM SAT |
0.1" (95%) to 0.3" (60%) to 0.8" (20%) | |
| Jefferson |
Current TO
1000 PM SAT |
0.1" (95%) to 0.3" (60%) to 0.8" (20%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.