National Weather Service Forecast Discussion

Thornton Weather Forecast   
Today's Forecast Story   
151
FXUS65 KBOU 190835
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
235 AM MDT Fri Jun 19 2026

.KEY MESSAGES...

- Isolated showers and thunderstorms possible near the southern
  foothills and Palmer Divide today. A few storms could become
  strong to severe in the late afternoon.

- Elevated fire weather conditions in the mountains and valleys
  today with critical conditions expected on Saturday.

- Strong to severe storms possible across the eastern plains on
  Saturday and Sunday.

- Scattered coverage of showers and storms on Sunday and Monday.


&&

.DISCUSSION /Through Thursday/...
Issued at 208 AM MDT Fri Jun 19 2026

Another relatively quiet day for most of the forecast area, as
the axis of the upper level ridge begins shifting east into
Colorado. Elevated fire weather conditions are possible again for
the mountains and high valleys, as relative humidity values
plummet to 8-15% in the afternoon. However, with weak flow aloft
due to the ridging, winds will be relatively light (

NWS BOU Office Area Forecast Discussion