| Message 2’s have been issued for the entire District effective from 10am until 10pm this evening. The Message 2’s have been issued effective prior to the start time of the NWS Flood Watch as the threat for moderate to heavy rain will be possible throughout most of the day today. A few scattered rain showers are currently over the District which could help limit the potential for stronger storm development this afternoon and evening. However, good upper-level support, which will increase as the day moves on will likely produce stronger storms this afternoon and evening with widespread moderate to heavy rainfall likely across the District. The best chance for impactful showers will start at 10am this morning, with increasing chances into the afternoon and evening before chances for heavy rainfall subsides after 10pm. With today’s storms there will be a good threat for both 0.5” or more in 10-30 minutes as well as a few areas that could have persistent moderate to heavy rainfall with over 1” per hour possible in some spots. Expect Low Impact Flooding triggering with lower initial storm amounts today between 0.35-0.45” which will likely result in pooling of water as the surface remains saturated at this time. Storms may also contain large hail, gusty winds and frequent cloud-to-ground lightning. |
WORST CASE SCENARIO: A stationary strong thunderstorm, or training of moderate to heavy showers/thunderstorms has the potential to produce 3.0” of rainfall in 60 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (50%) to 1.5" (25%) | |
| Arapahoe |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (50%) to 1.5" (25%) | |
| Boulder |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (50%) to 1.5" (25%) | |
| Broomfield |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (50%) to 1.5" (25%) | |
| Denver |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (50%) to 1.5" (25%) | |
| Douglas |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (60%) to 1.5" (30%) | |
| Jefferson |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (60%) to 1.5" (30%) | |
| Foothills above 6500ft | |||
| Boulder |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (60%) to 1.5" (30%) | |
| Douglas |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (60%) to 1.5" (30%) | |
| Jefferson |
1000 AM TO
1000 PM |
0.2" (100%) to 0.5" (60%) to 1.5" (30%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.