| - | Message 1's have been issued for the entire District as an area of heavy non-thunderstorm rain has developed over NW portions of the District impacting portions of Boulder, Broomfield, Adams and Jefferson Counties. These showers have already produced 1-3" of rain or more and has resulted in Message 3's (NWS Flash Flood Warning) for portions of Boulder and Broomfield Counties with minor flooding ongoing over parts of Adams and Jefferson Counties. The Message 3's are valid until 11:00 AM. |
| - | These non-thunderstorm heavy rain showers are expected to slowly sag south as the day progresses. Best chances for rain showers will be into the early afternoon. Moisture is expected to decrease this afternoon and the best chances for rain will eventually push south of the District by late afternoon. |
| - | Thunderstorm chances will hinge upon daytime heating and if we see some sunshine this afternoon a few isolated thunderstorms may develop. If thunderstorms are able to develop they will be vary capable of producing heavy rain. Due to all of the rain yesterday and overnight the ground is saturated in many areas and it may not take as much rain today to produce excessive runoff. |
WORST CASE SCENARIO: A thunderstorm is able to develop this afternoon with heavy rainfall rates of 0.8-2.2" in 10-30 minutes and up to 3.5" in 45-60 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (75%) to 1.5" (40%) | |
| Arapahoe |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (60%) to 1.5" (30%) | |
| Boulder |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (75%) to 1.5" (40%) | |
| Broomfield |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (80%) to 1.5" (60%) | |
| Denver |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (65%) to 1.5" (35%) | |
| Douglas |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (60%) to 1.5" (30%) | |
| Jefferson |
Current TO
600 PM TUE |
0.3" (100%) to 0.8" (70%) to 1.5" (35%) | |
| Foothills above 6500ft | |||
| Boulder |
Current TO
600 PM TUE |
0.3" (95%) to 0.8" (50%) to 1.5" (25%) | |
| Douglas |
Current TO
600 PM TUE |
0.3" (95%) to 0.8" (50%) to 1.5" (25%) | |
| Jefferson |
Current TO
600 PM TUE |
0.3" (95%) to 0.8" (50%) to 1.5" (25%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.