| - | The upper level pattern remains similar to the past several days with a trough of low pressure remaining in place southwest of the District. However, low level moisture has decreased compared to previous days. Highs today will reach the low 80s on the plains. |
| - | Although moisture has decreased overall, there will still be enough lingering moisture combined with daytime heating to trigger 1-2 rounds of afternoon thunderstorms. Storms will initially develop over the foothills by midday before tracking across the lower elevations of the District from east to west at 12-17mph by early afternoon. |
| - | Typical storms today will produce light to moderate rainfall with dewpoints ranging from the upper 30s to low 40s. However, if a strong thunderstorm develops then brief heavy rainfall cannot be ruled out. In addition, there is a chance that outflow from eastern plains or Palmer Divide thunderstorms could back its way into the District and increase low level moisture. Similar to previous days, most of the thunderstorm activity should taper off by late afternoon. |
WORST CASE SCENARIO: A strong, slow-moving thunderstorm produces heavy rainfall of up to 1.3" in 45-75 minutes.
A LOOK AHEAD: A trough of low pressure will track south of the District on Wednesday, while at the surface a cold front will arrive, leading to easterly upslope flow and increasing low level moisture. As a result, scattered thunderstorms can be expected Wednesday afternoon and evening with the potential for heavy rainfall. On Thursday and Friday, thunderstorm activity should become more isolated in coverage but enough low level moisture will remain to result in a modest threat for heavy rainfall.
| Location | Prime Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
100 PM TO
800 PM |
0.1" (80%) to 0.3" (50%) to 0.6" (25%) | |
| Arapahoe |
100 PM TO
800 PM |
0.1" (80%) to 0.3" (50%) to 0.6" (25%) | |
| Boulder |
100 PM TO
800 PM |
0.1" (75%) to 0.3" (40%) to 0.6" (20%) | |
| Broomfield |
100 PM TO
800 PM |
0.1" (75%) to 0.3" (40%) to 0.6" (20%) | |
| Denver |
100 PM TO
800 PM |
0.1" (80%) to 0.3" (45%) to 0.6" (20%) | |
| Douglas |
100 PM TO
800 PM |
0.1" (80%) to 0.3" (50%) to 0.6" (25%) | |
| Jefferson |
100 PM TO
800 PM |
0.1" (75%) to 0.3" (40%) to 0.6" (20%) | |
| Foothills above 6500ft | |||
| Boulder |
1200 PM TO
800 PM |
0.1" (85%) to 0.3" (40%) to 0.6" (20%) | |
| Douglas |
1200 PM TO
800 PM |
0.1" (90%) to 0.3" (50%) to 0.6" (25%) | |
| Jefferson |
1200 PM TO
800 PM |
0.1" (90%) to 0.3" (40%) to 0.6" (20%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.