- | Abundant surface moisture and daytime heating in tandem with a passing upper level disturbance will result in scattered thunderstorms this afternoon and early evening over the District. Temperatures today are expected to be a degree or two cooler than yesterday due to additional cloud cover with highs in the upper 80's to lower 90's over the plains. |
- | Thunderstorms will first develop over the foothills by around noon or before and then move into the I-25 corridor between 1-2pm. A round or two of storms is then expected move through into the early evening. Typical storms today will produce moderate to brief heavy rainfall with strong thunderstorms capable of producing extended periods of heavy rainfall which may lead to excessive runoff and possibly flash flooding. Strong storms may also contain large hail, frequent cloud-to-ground lightning and gusty winds. |
- | Thunderstorms will be slow moving from SW to NE at 10mph or less. Strong thunderstorms may remain nearly stationary or move erratically along outflow boundaries/gust fronts. Thunderstorm activity is expected to diminish this evening around sunset with a few lingering light showers possible past dark. |
WORST CASE SCENARIO: A large thunderstorm complex or a nearly stationary strong thunderstorm may produce up to 2.5" in 60 minutes or less.
A LOOK AHEAD: Moisture begins to decrease on Sunday but there will still be a good chance for afternoon thunderstorms with widely scattered coverage and storms a bit weaker than today but still capable of producing heavy rainfall. Temperatures on Sunday will continue to run in the upper 80's to lower 90's for highs over the plains.
Location | Prime Time | 30-Minute Rainfall and % Probability |
Message Potential |
---|---|---|---|
Plains | |||
Adams |
200 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Arapahoe |
200 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Broomfield |
200 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Denver |
200 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Boulder |
100 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Douglas |
100 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Jefferson |
100 PM TO
700 PM |
0.1" (80%) to 0.5" (40%) to 1.3" (20%) | |
Foothills above 6500ft | |||
Boulder |
1200 PM TO
700 PM |
0.1" (90%) to 0.5" (40%) to 1.3" (15%) | |
Douglas |
1200 PM TO
700 PM |
0.1" (90%) to 0.5" (40%) to 1.3" (15%) | |
Jefferson |
1200 PM TO
700 PM |
0.1" (90%) to 0.5" (40%) to 1.3" (15%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.