396
FXUS65 KBOU 212346
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
546 PM MDT Sat Jun 21 2025

.KEY MESSAGES...

- Above normal temperatures with no precipitation for Sunday.

- Cooler with more moisture and scattered to likely showers and
  thunderstorms Monday through Wednesday.

- Drier Thursday through Saturday with warming temperatures.

&&

.DISCUSSION /Through Saturday/...
Issued at 220 PM MDT Sat Jun 21 2025

Currently, temperatures are in the mid to upper 90s across the
plains at this time. There should be one more day (Sunday) of
above normal heat for the CWA, but not as hot as today.

Southwesterly flow aloft is expected over the CWA for the next
several days.  The flow is pretty strong from Monday through
Wednesday with jet level speeds from 60 to 100 knots. The QG
Omega fields show weak upward motion over the CWA from Sunday,
pretty much through Wednesday. At the surface, models continue to
show a decent cold front to move into the CWA Sunday night.

Moisture increases from the divide eastward on Monday and sticks
around through Wednesday. In fact, moisture gets better west of
the divide on Wednesday as well. QPF fields show measurable
rainfall in several areas all three days, with the wettest day to
be Wednesday. Will leave pops in the 30%-60% range from the
18Z-06Z time frames all three days.

Moisture decreases from Thursday onward, but there should still be
enough around for a chances of late day storms in the mountains and
isolated coverage out on the plains.

For temperatures, Sunday`s highs will be above normal but not hot
enough to break any records. Monday`s highs cool down into the
70s over the plains, with only slightly higher readings Tuesday,
then 70s again on Wednesday. Thursday highs will warm to normal
values, then Friday and Saturday could be around 90 over the
plains.

&&

.AVIATION /00Z TAFS through 00Z Monday/...
Issued at 534 PM MDT Sat Jun 21 2025

VFR conditions expected through the TAF period. Gusty winds should
decrease in the next couple of hours and turn to drainage
overnight. For tomorrow, winds will predominantly come from
SW/W before a cold front arrives as early as 04Z.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning until 9 PM MDT this evening for COZ214.

Heat Advisory until 6 PM MDT this evening for COZ038>051.

&&

$$

DISCUSSION...rjk
AVIATION...Ideker