Area Forecast Discussion
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
889 FXUS65 KBOU 221144 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 544 AM MDT Sun Sep 22 2024 .KEY MESSAGES... - Scattered showers end this afternoon. - Well below normal temperatures for today but likely a short- lived cooldown. - Warmer and drier this upcoming week with no significant precipitation chances. && .SHORT TERM /Through Tonight/... Issued at 346 AM MDT Sun Sep 22 2024 Upslope flow continues over northeastern Colorado this morning producing stratiform rainfall for lower elevations. Weather stations suggest a few areas along the plains and Palmer Divide received 0.10- 0.40 inches overnight. Scattered showers will continue for these areas until early afternoon as the upper level trough pushes northeast. Light snow continues across mountain webcams this morning. Snow showers should begin to decrease in intensity this morning leading to an additional 1-2 inches for areas above 10 thousand feet. As upper level forcing exits the region by this afternoon, cross sections indicate low to mid level clouds clearing over the forecast areas through this evening. Tonight, drier air enters. && .LONG TERM /Monday through Saturday/... Issued at 346 AM MDT Sun Sep 22 2024 Some patchy fog and/or frost may linger into the first half of the morning, but otherwise Monday should be a quiet day as drier northwesterly flow develops. Mostly sunny skies should prevail through the day with temperatures back above normal (mid/upper 70s). Though we`ve talked about the potential for a shortwave/cold front passing through late Monday into Tuesday, guidance has started to back away from this, keeping the better moisture/cooler temperatures off to the east of our CWA. Can`t completely rule out a couple of showers overnight but have reduced PoPs quite a bit compared to a few cycles ago. Guidance is also in much better agreement in the longer term, developing a large ridge axis over the region Tuesday into Wednesday. There`s a pretty good signal for temperatures to reach the mid/upper 80s, especially on Thursday. The ridge should slowly break down towards next weekend, but above normal temperatures will likely persist through at least Saturday. && .AVIATION /12Z TAFS through 12Z Monday/... Issued at 544 AM MDT Sun Sep 22 2024 MVFR will continue for KDEN and KBJC as moderate rain showers and low ceilings drop visibilities. Heavier rainfall continue this morning until 14-16Z. Rain showers should end between 18-19Z for all terminals. VFR conditions could return as early as 20Z. Wind should remain easterly then shifting southeast late this afternoon. Typical drainage winds will occur overnight. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory until noon MDT today for COZ033-034. && $$ SHORT TERM...AD LONG TERM...Hiris AVIATION...AD