Area Forecast Discussion
Issued by NWS Riverton, WY

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FXUS65 KRIW 150520
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
1120 PM MDT Fri Jul 14 2017

.SHORT TERM...(This evening through Monday)
Issued at 259 PM MDT Fri Jul 14 2017

A large upper level high pressure ridge will remain across the Great
Basin and Desert Southwest into the Southern Plains will remain in
place into early next week with the polar jet across the Pacific
Northwest and Southern Canada.  Little variation in temperatures
and Relative humidity is expected.  The air mass will be most
unstable in the afternoons and early evening hours with scattered
showers and isolated thunderstorms with strong win gusts.  Overall
winds will be light except for the thunderstorm outflow winds.

.LONG TERM...(Monday night through Friday)
Issued at 259 PM MDT Fri Jul 14 2017

A large upper level high pressure ridge will remain across the Great
Basin and Desert Southwest into the Southern Plains will remain in
place Monday night through the week with the polar jet across the
Pacific Northwest and Southern Canada.  Little variation in
temperatures and Relative humidity is expected.  The air mass will
be most unstable in the afternoons and early evening hours with
scattered showers and isolated thunderstorms with strong win gusts.
Overall winds will be light except for the thunderstorm outflow
winds.

&&

.AVIATION...(For the 06Z TAFS through 06Z Saturday night)
Issued at 1120 PM MDT Fri Jul 14 2017

VFR conditions will occur through the period. Isolated showers and
a thunderstorm or two may linger vcnty and east of a KGEY-KRWL
line until around 08z before dissipating. On Saturday, moisture
and slight instability will rotate across western and northern
Wyoming with more stable and dry conditions vicinity and south of
a KRKS-KCPR line. Isolated showers and thunderstorms are expected
across the north and west primarily from 21z Saturday until 03z
Sunday. The main hazards with these showers and storms will be
erratic outflow wind gusts 25-35 knots.

&&

.FIRE WEATHER...
Issued AT 259 PM MDT Fri Jul 14 2017

A large upper level high pressure ridge will remain across the Great
Basin and Desert Southwest into the Southern Plains will remain in
place into early next week with the polar jet across the Pacific
Northwest and Southern Canada.  Little variation in temperatures and
Relative humidity is expected.  The air mass will be most unstable
in the afternoons and early evening hours with scattered showers and
isolated thunderstorms with strong win gusts.  Overall winds will be
light except for the thunderstorm outflow winds.  Afternoon mixing
heights will be favorable with sufficient transport winds for very
good to excellent smoke dispersal.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...Baker
LONG TERM...Baker
AVIATION...Meunier
FIRE WEATHER...Baker



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