Area Forecast Discussion
Issued by NWS Pueblo, CO

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FXUS65 KPUB 101747

Area Forecast Discussion
National Weather Service Pueblo CO
1047 AM MST Fri Nov 10 2017

.SHORT TERM...(Today and tonight)
Issued at 419 AM MST Fri Nov 10 2017

Stratus and patchy fog persist along the I-25 corridor and across
the ern plains early this morning, as weak ely upslope has continued
through the night. Expect clouds and fog will gradually break up
this morning as layer of dry air aloft helps in dissipation once
mixing begins, though weak east flow through the Arkansas Valley may
keep clouds in place until early afternoon. Eastern mountains and
plains will likely see a fairly large temperature gradient by
afternoon, as eastern mountain slopes along and west of I-25 see
warmer air mix to the surface under increasing flow aloft, while
weak ely flow up the Arkansas Valley keeps relatively cool air in
place from Pueblo eastward to the KS border. Farther west, max temps
over the mountains and interior valleys will climb several degf from
yesterday as warmer air spreads eastward across the region.
Overnight, stratus and fog may reappear near the KS border toward
midnight as low level flow remains light and boundary layer close to
saturation, while weak downslope gradient keeps I-25 corridor
generally clear and relatively mild. Mountains and interior valleys
will be seasonably cold, with some gusty west winds at times over
higher peaks and exposed ridges.

.LONG TERM...(Saturday through Thursday)
Issued at 419 AM MST Fri Nov 10 2017

Long-range models indicate a prolonged period of generally westerly
flow aloft and dry conditions across the region.

Two disturbances are forecast to pass by to the north. The first one
will cross the northern Rockies on Saturday, pushing a weak cold
front south across Colorado Saturday afternoon and evening. This
will bring a chance for some isolated snow showers to the central
mts Saturday, and 5 to 10 degree cooler high temps for the plains on

The second shortwave will follow a similar path on Tuesday, dropping
another weak cold front Tuesday afternoon and evening. This second
disturbance will produce a better chance for some pcpn along the
continental Divide on Wednesday, as well as 5 to 10 degrees of
cooling to the eastern plains for Wednesday afternoon.

Look for maximum temps each day in the mid 50s to around 60F for the
high valleys, and 60s to around 70F for the eastern plains. For
Sunday and again on Wednesday, temps across the plains will be
cooler with highs forecast to only warm into the 50s to right around

Looking ahead to next Thursday, southwest flow aloft starts to
strengthen as a stronger upper system approaches from the Pacific
NW. This will likely produce stronger winds for the CWA into the
weekend, along with the potential for some mt snow. Moore


.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1025 AM MST Fri Nov 10 2017

Low level fog and stratus across the plains beginning to retreat,
slowly. For the most part, it has shift south of KCOS. It is
thinning rapidly along the Highway 50 corridor from Canon City to
Pueblo West. It is still holding on pretty strong over the lower
Arkansas River Valley from Pueblo eastward and also over the
plains adjoining Kansas. There are thick wave clouds over the
southern I-25 corridor from south of Pueblo to New Mexico but it
appears, based on surface reports, that the low clouds have pulled
out of this area. Clear or mostly clear skies elsewhere across
southern Colorado. The low clouds will continue to retreat gradually
eastward across the plains today but may never leave entirely
over areas east of KPUB. Then, tonight, they may advance westward
again to about KPUB. KCOS will probably stay out of the low clouds
tonight. KALS should also be alright. The low clouds will linger
over the plains into Saturday morning but should then largely move
east into Kansas by Saturday afternoon as a drier, westerly flow
advances eastward across the region.




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