Broomfield, Colorado 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

487
FXUS65 KBOU 200007
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
607 PM MDT Thu Jun 19 2025

.KEY MESSAGES...

- Hot Friday and Saturday, with record setting heat possible in
  some areas of the plains Friday.

- Dry conditions Friday through Sunday.

- Cooler with a decent moisture return allowing for scattered to
  likely late day showers and thunderstorms Monday through next
  Thursday.

&&

.DISCUSSION /Through Thursday/...
Issued at 224 PM MDT Thu Jun 19 2025

The mid/late June heat is the main weather feature for the CWA
through the weekend.  Record heat is possible over some plains
locations; mainly on Friday. But cooler more moist conditions
should return by next Monday.

Upper ridging will dominate over the CWA today into tonight.  By
Friday, the upper ridge center pushes southeastward and on into the
mid Mississippi River Valley area by Saturday.  Southwesterly flow
aloft is over our CWA from Friday afternoon well into next weak. The
flow gets fairly strong Friday night and again Sunday through
Tuesday of next week.  The synoptic scale energy on the QG Omega
fields is benign from now through Sunday.  Thickness grids show
Friday to be the hottest day, with some location`s record highs to
potentially be broken.  Denver`s record for June 20 is 99, so
there is a chance for a new record there.

Looking at moisture, precipitable water proggs are low across the
CWA Friday into Sunday with values of 0.20 inch for most of the CWA.
There are some 0.50 inch values over the far east.  It doesn`t look
like any of the forecast area will see rainfall through Sunday.

Models show a decent cold front for the CWA on Sunday afternoon or
Sunday night depending on the model.  The upper ridge is centered
over the eastern U.S. from Sunday afternoon through most of next
weak. The airmass for the CWA looks to stay a bit cooler than normal
much of next week.  Precipitable water values come up into the 0.50
to 1.30 inch from the Continental Divide eastward Monday through
Thursday. There is some upward synoptic scale energy around as
well much of that time. Will keep in the decent late day pops
going Monday through Tuesday for much of the CWA.

For temperatures, highs look to stay a bit below The highs look to
be seasonal normals for the plains and foothills next week. Will
leave the heat highlights as is.

&&

.AVIATION /00Z TAFS through 00Z Saturday/...
Issued at 547 PM MDT Thu Jun 19 2025

VFR conditions expected through the TAF period. The enhanced
southeasterlies finally arrived late this afternoon. We are
expecting them to persist through the daylight hours this evening
before we see some slackening when decoupling takes hold. Winds
are expected to turn to drainage late tonight, then begin
increasing somewhere between 14-16Z Friday morning, where 25-35 kt
gusts are expected at all TAF sites, with the higher gusts
occurring near peak heating in the afternoon. Hot temperatures and
a well mixed environment will will keep gusty southwesterly winds
in place through Friday evening. Gusts should begin to slacken
after sunset again Friday night.



&&

.BOU WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from 11 AM Friday to 6 PM MDT Saturday for
COZ038>051.

&&

$$

DISCUSSION...rjk
AVIATION...Bonner