| Message 1’s has been issued for the entire District effective until 7:00pm as the threat of heavy rainfall with a chance for severe storms, favoring eastern portions of the District. Severe storms may contain large hail up to 1.5” and gusty winds 60+ mph. The best chance for widespread showers/thunderstorm activity within the District will be between 1pm-6pm with a few isolated lingering showers possible through 10/11pm. The initial round of storms will produce the strongest storms of the day with moderate to heavy rainfall likely at times. Storm intensities will decrease into the evening hours tapering off completely by midnight. Storm motions will be west/southwest to east/northeast between 10-15mph which could limit point rainfall amounts. However, outflow boundaries will likely produce some erratic storm movement which will increase chances for heavy rainfall across the District. Skies will clear this evening with dry conditions expected through the overnight as temperatures drop into the upper 50s to low 60s on the plains with low to mid 50s along the foothills. |
WORST CASE SCENARIO: A strong, stationary thunderstorm, or training of thunderstorm cells will have the potential to produce up to 2.25” total in under 60 minutes.
| County-specific Quantitative Precipitation Outlook |
Precipitation Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Arapahoe |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Boulder |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Broomfield |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Denver |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Douglas |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Jefferson |
1200 PM TO
700 PM |
0.25" (75%) to 0.75" (50%) to 1.25" (25%) | |
| Foothills above 6500ft | |||
| Boulder |
1200 PM TO
700 PM |
0.25" (60%) to 0.75" (30%) to 1.25" (15%) | |
| Douglas |
1200 PM TO
700 PM |
0.25" (60%) to 0.75" (30%) to 1.25" (15%) | |
| Jefferson |
1200 PM TO
700 PM |
0.25" (60%) to 0.75" (30%) to 1.25" (15%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.