| Subtropical moisture continues improving today following last night’s cold front, while afternoon high temperatures are expected to be much cooler, reaching the mid 80s across the Front Range Urban Corridor. Dewpoints will be in the low 50s with precipitable water (PWAT) values around 0.85”. These conditions will support scattered to widespread thunderstorms this afternoon and evening. Like yesterday, convection initiation will begin around noon across complex terrain, with storms moving east onto the plains between 15-20 mph. Conditions for heavy rain are better across the foothills and east of the District. However, stronger storms across the eastern Plains of Colorado have the potential to produce outflow boundaries that move west into the District, initiating slow-moving storms with the potential to produce meaningful rainfall. Thunderstorm activity is expected to dissipate by the late evening, with skies gradually clearing overnight. |
WORST CASE SCENARIO: A slow-moving, strong thunderstorm may be capable of producing up to 1.50” or more in 30 minutes or less.
A LOOK AHEAD: Dry(er) air and hot afternoon temperatures return Thursday, with highs climbing into the 90s across the Plains with chances for showers and thunderstorms through the evening. Storms are expected to produce light to briefly moderate rainfall as drying continues through the day.
| Location | Prime Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Arapahoe |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Boulder |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Broomfield |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Denver |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Douglas |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Jefferson |
100 PM TO
800 PM |
0.25" (50%) to 0.5" (30%) to 1" (10%) | |
| Foothills above 6500ft | |||
| Boulder |
100 PM TO
800 PM |
0.25" (60%) to 0.5" (40%) to 1" (20%) | |
| Douglas |
100 PM TO
800 PM |
0.25" (60%) to 0.5" (40%) to 1" (20%) | |
| Jefferson |
100 PM TO
800 PM |
0.25" (60%) to 0.5" (40%) to 1" (20%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.