| The low clouds and fog from earlier this morning is burning off quickly and with more sunshine today temperatures will warm into the 70’s over the District. Normal high for Denver today is 89 degrees. The additional heating and abundant surface moisture in place will result in stronger thunderstorms today in and around the District. Thunderstorms will first develop over the foothills between noon and 1pm, then move onto the plains between 1-3pm. Chances for thunderstorms are expected to continue well into the evening with multiple rounds of storms possible. Prime time for thunderstorms is from 2pm-midnight. Additional rain showers will continue possible beyond midnight with conditions drying out overnight. Stronger storms that develop today will have the potential to produce brief heavy rainfall and become severe with large hail and possibly a very isolated tornado. Typical storms will move from W to E or NNW to ESE at 20-30mph with stronger storms possibly moving more slowly/erratically. Fast storm motions will help to reduce point rainfall amounts but a large thunderstorm or training of thunderstorm cells could produce extended periods of heavy rainfall that may lead to excessive runoff and possibly flash flooding. Message 1’s will likely be issued by early afternoon and continue well into the evening. |
WORST CASE SCENARIO: A slower moving large thunderstorm or training of thunderstorm cells may result in up to 2.2” of rain in 45-60 minutes.
A LOOK AHEAD: A couple more active thunderstorm days are expected on Friday and Saturday then chances for thunderstorms decrease Sunday and Monday may end up being on the drier side. Storms that develop Friday and Saturday will continue to have the potential to become strong/severe with brief heavy rainfall and hail. Temperatures will be running either side of 80 degrees for afternoon highs over the plains.
| Location | Prime Time | 30-Minute Rainfall and % Probability |
Message Potential |
|---|---|---|---|
| Plains | |||
| Adams |
200 PM TO
1159 PM |
0.1" (90%) to 0.5" (50%) to 1.5" (25%) | |
| Arapahoe |
200 PM TO
1159 PM |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Broomfield |
200 PM TO
1159 PM |
0.1" (90%) to 0.5" (50%) to 1.5" (25%) | |
| Denver |
200 PM TO
1159 PM |
0.1" (90%) to 0.5" (50%) to 1.5" (25%) | |
| Boulder |
100 PM TO
1159 PM |
0.1" (90%) to 0.5" (50%) to 1.5" (25%) | |
| Douglas |
100 PM TO
1159 PM |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Jefferson |
100 PM TO
1159 PM |
0.1" (90%) to 0.5" (50%) to 1.5" (25%) | |
| Foothills above 6500ft | |||
| Boulder |
1200 PM TO
1159 PM |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Douglas |
1200 PM TO
1159 PM |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) | |
| Jefferson |
1200 PM TO
1159 PM |
0.1" (90%) to 0.5" (60%) to 1.5" (30%) |
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.