Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

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FXUS65 KBOU 260203
AFDBOU

Area Forecast Discussion
National Weather Service Denver/Boulder CO
803 PM MDT MON JUL 25 2016

.UPDATE...
Issued at 751 PM MDT Mon Jul 25 2016

CWA is almost storm free this evening except some lingering
showers over Southern Lincoln county which will be ending between
9-10 pm. 00Z sounding showed warming in all levels of the
atmosphere which have kept storms at bay for the most part this
evening. Have removed thunderstorms from most of the area this
evening except Southern Lincoln county.

&&

.SHORT TERM...(This afternoon through Tuesday)
Issued at 249 PM MDT Mon Jul 25 2016

Upper level ridge centered near the four corner will drift west
the next 24 hours. This will cause flow aloft to turn from west to
northwest on Tuesday. Precipitable water values are up to a
quarter inch drier today. This will help favor gusty outflow winds
as the main threat with the storms. Best chance for storms will be
south of I-70 where moisture will be a little better. On the
eastern plains where CAPE and shear is better, can`t rule out a
severe thunderstorm or two with large hail and winds to 70 mph.

For Tuesday, a weak wave embedded in the flow aloft along with
slightly more moisture will bring a better chance for
thunderstorms. Heavy rain and gusty outflow winds will be the main
threat with the storms. A severe storm or two will be possible
over far eastern Colorado where the best shear and instability
will reside. Temperatures will be slightly warmer with highs
climbing above 90 degrees over much of northeast Colorado.

.LONG TERM...(Tuesday night through Sunday)
Issued at 249 PM MDT Mon Jul 25 2016

An upper trough and surface front passing southeast across the
area Tuesday night will help push scattered thunderstorms east
into Kansas through midnight, with gusty outflow winds, small
hail and brief moderate to heavy rainfall the main impacts. A
stronger storm may be possible with strong winds and large hail
east of a line from Sterling to Akron. Cooler air behind the
trough and clearing skies will allow for minimum temperatures to
cool a degree or two cooler than tonight`s readings.

The upper ridge will build over the southeastern Great Basin
Wednesday and remain there through the rest of the week putting
northwest flow aloft over Colorado. This will push subtropical
moisture southeast and thereby decreasing the chances for storms
over the high terrain to a slight chance. Shortwaves in the flow
aloft coming out of Canada will send a couple fronts into the
northeastern Colorado plains, though different models have
different solutions for the timing and extent. Overall, expect
some cooling over the northeastern corner of the state with an
increase in moisture as it wraps in from the Great Plains. The
cold frontal boundary will provide a focus for isolated to
scattered storms to form each afternoon and evening over the
northeastern plains, with a slight chance for strong to severe
storms near the NE/KS state borders. The forecast area further
west will have little to no chance of showers...although this may
depend on how far west the frontal boundary moves west.
Temperatures Thursday and Friday will be back in the mid to upper
80s for the plains.

The upper ridge will begin pushing east across the state on
Saturday then develop southwesterly flow aloft for Sunday and
Monday as a trough drops into the Pacific Northwest. This will
allow for warming temperatures and a return of subtropical
moisture. Look for increasing chances for storms in the mountains
with a slight chance over the plains.

&&

.AVIATION...(For the 00Z TAFS through 00Z Tuesday evening)
Issued at 751 PM MDT Mon Jul 25 2016

Earlier outflow boundaries still resulting in gusty South to
Southeast winds at kden/kapa to 28kt and should these begin to
relax through 04z. the boundary is just moving into kbjc at this
time. No expecting any showers/storms through the rest of tonight.

&&

.BOU Watches/Warnings/Advisories...
None.
&&

$$

UPDATE...Entrekin
SHORT TERM...Meier
LONG TERM...Kriederman
AVIATION...Entrekin



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