National Weather Service Forecast Discussion

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899
FXUS65 KBOU 302055
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
255 PM MDT Tue Jun 30 2026

.KEY MESSAGES...

- Critical fire weather conditions will be present in the high
  country today due to warm, dry and windy conditions.

- A couple strong storms possible across far northeastern Colorado
  late this afternoon/evening.

- Mainly dry Wednesday through Friday with elevated to critical
  fire conditions across much of the area.

&&

.DISCUSSION /Through Tuesday/...
Issued at 248 PM MDT Tue Jun 30 2026

It is sunny, dry, and breezy across much of Colorado this afternoon.
A shortwave currently sitting over Utah will continue to track
northeast into northern Colorado and Wyoming, and flow aloft is now
SSW. At the surface, strong southeasterly flow is advecting
dewpoints in the low 40s into north central Colorado as far west as
the I-25 corridor. Current satellite imagery shows cumulus cloud
coverage already increasing over the foothills. With DCAPE values in
the 1000-1500 J/kg range, virga showers are still on track to
develop this afternoon. Wind gusts up to 50-55 mph will be
possible with the outflows of the strongest dry microbursts. High-
res model guidance initially favors the northern I-25 corridor for
the development of high-based showers between 4pm and 6pm. The
far northeast plains of Colorado will have a better chance to see
a strong thunderstorm as high-based showers move into an
environment with higher precipitable water (PW ~1.00") and MLCAPE
in the early evening. Another shortwave will graze northern
Colorado tomorrow afternoon bringing a chance (20%-30%) for a few
high based showers over our northeast CWA, although the moisture
content of the airmass in place will be much lower than today`s
(PWs 

NWS BOU Office Area Forecast Discussion