| - | Isolated to widely scattered thunderstorm activity will make a return to the District today as WNW flow aloft imports mid and upper level moisture into NE CO. Temperatures will continue to be hot with highs well into the 90's over the plains with some areas possibly touching 100 degrees depending upon how early the cloud cover arrives from afternoon convection. |
| - | A moist/dry line is expected to set up at the surface just E of the District with the strongest storms remaining E and SE but if this feature ends up being further W than expected then stronger storms with the potential for heavy rainfall may develop over the District this afternoon. Best chances for thunderstorm activity will be from 1-8pm with possibly some lingering isolated shower activity into the early overnight period. |
| - | Typical storms today will produce light to brief moderate rain and move from NW to SE at 15-20mph. If we are able to tap into higher surface moisture a strong thunderstorm is possible with the potential for heavy rainfall and slower, more erratic storm motions. |
WORST CASE SCENARIO: Higher dew points to the E are advected into the District allowing for a strong slower moving strong thunderstorm with the potential to produce 0.5-1.5" of heavy rainfall in 10-30 minutes.
A LOOK AHEAD: The threat for heavy rainfall producing thunderstorms will increase on Monday and continue Tuesday. Temperatures will drop 3-5 degrees on Monday with highs in the low to mid 90's and continue to cool on Tuesday with afternoon readings in the 80's over the plains.
| Location | Prime Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
100 PM TO
800 PM |
Trace (50%) to 0.2" (25%) to 0.6" (15%) | |
| Arapahoe |
100 PM TO
800 PM |
Trace (50%) to 0.2" (25%) to 0.6" (15%) | |
| Boulder |
100 PM TO
800 PM |
Trace (60%) to 0.2" (25%) to 0.6" (10%) | |
| Broomfield |
100 PM TO
800 PM |
Trace (50%) to 0.2" (25%) to 0.6" (10%) | |
| Denver |
100 PM TO
800 PM |
Trace (50%) to 0.2" (25%) to 0.6" (15%) | |
| Douglas |
100 PM TO
800 PM |
Trace (75%) to 0.2" (30%) to 0.6" (15%) | |
| Jefferson |
100 PM TO
800 PM |
Trace (60%) to 0.2" (25%) to 0.6" (10%) | |
| Foothills above 6500ft | |||
| Boulder |
1200 PM TO
800 PM |
Trace (80%) to 0.2" (40%) to 0.6" (10%) | |
| Douglas |
1200 PM TO
800 PM |
Trace (80%) to 0.2" (40%) to 0.6" (10%) | |
| Jefferson |
1200 PM TO
800 PM |
Trace (80%) to 0.2" (40%) to 0.6" (10%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.