| Message 2’s (NWS Flood/Flash Flood Watch) will remain valid until 6:00 AM Friday as rain showers will continue to fall over the District. Rainfall totals from roughly sunrise this morning until now range from 0.5-1.5” over NW portions of the District with 1.0-2.5” or more for central/eastern and southern areas and has resulted in creeks and streams running high resulting in minor flooding for many areas with isolated areas of moderate impact. Rainfall rates appear to have peaked, and intensities have been backing off over the past couple hours and creeks and streams should begin to subside slightly but remain elevated as the ground is saturated and additional rainfall will easily result in runoff. Rainfall intensities peaked earlier today in the 0.5-1.0” in 60 minute range and are now in the 0.1-0.3” in 60 minute range and this type of intensity is expected to continue for the duration of the event with isolated higher rates of 0.2-0.6” in 60 minutes under the heavier showers. With temperatures in the mid 40’s to lower 50’s the threat for thunderstorms is very low but not zero. Should a weak thunderstorm develop higher rainfall rates are possible and could exacerbate runoff already occurring and result in flash flooding. There could be a few lulls in the precipitation this evening only to fill in again overnight with some snow possible for higher elevations at or above the 8,000ft level. Rain showers are expected to continue into tomorrow morning before starting to break up later in the morning or during the afternoon as the slow moving low pressure system over SE Colorado continues to churn and stream moisture into the area. |
WORST CASE SCENARIO: A weak to briefly moderate thunderstorm is able to develop in a cold air mass with the potential to produce heavy rainfall of 0.4-1.2" in 10-30 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 60-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Arapahoe |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Boulder |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Broomfield |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Denver |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Douglas |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Jefferson |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Foothills above 6500ft | |||
| Boulder |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Douglas |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) | |
| Jefferson |
Current TO
600 AM FRI |
0.1" (100%) to 0.3" (75%) to 0.8" (25%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.