Area Forecast Discussion
Issued by NWS Riverton, WY

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FXUS65 KRIW 250445
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
1045 PM MDT SUN JUL 24 2016

.SHORT TERM...Tonight THROUGH Monday (Issued at 308 PM MDT)

STRONGER WINDS ALOFT WILL MOVE OVER CENTRAL WYOMING MONDAY. A
WEAK COLD FRONT THAT HAS BROUGHT EAST WINDS AND LOW LEVEL
MOISTURE TO THE AREA WILL ERODE RAPIDLY WITH THE STRONGER WINDS
AND VERY DRY AIR MIXING DOWN TO THE SURFACE FROM NOON TO 3 PM
MDT. THE AIR MASS WILL BECOME VERY UNSTABLE ALLOWING SMOKE COLUMNS
TO RISE SEVERAL THOUSAND FEET ABOVE THE GROUND. THE STRONG WIND
AND LOW RELATIVE HUMIDITY WILL CONTINUE UNTIL ABOUT 9 PM MDT.
in the west STRONGER WIND AND VERY DRY AIR WILL MOVE OVER WESTERN
WYOMING ON MONDAY. IN THE FAR NORTH ISOLATED SHOWERS AND
THUNDERSTORMS ARE EXPECTED IN THE AFTERNOON AND EVENING ON MONDAY.

.LONG TERM...Monday night THROUGH Sunday

A series of cold fronts will move south from montana across
northern and central wyoming with increasing shower and
thunderstorm activity especially over the mountains across the
north spreading south through the week. Saturday and Sunday
some monsoon moisture may move into the southwest and west from
utah and southern idaho.

&&

.AVIATION.../06Z ISSUANCE/

VFR conditions will prevail through Monday night. Isolated showers
or storms in southern WY after 19z through 03z Tue. Isolated showers
or storms over far northern WY from 21z through 05z Tue. Outflow
wind gusts to 30 knots will be the main hazard near showers or
storms.

Smoke will continue to be an issue near active wildfires. This will
impact visibility at times in the valleys through 18z. Smoke plumes
are expected Monday afternoon into the evening which will send
columns of smoke across portions of the sky.

&&

.FIRE WEATHER...

...FIRE WEATHER WATCH FOR STRONG WIND GUSTS...LOW HUMIDITY AND A
VERY UNSTABLE AIR MASS ACROSS CENTRAL WYOMING MONDAY AFTERNOON AND
EVENING for zones 280 283 285 287 and 288...

STRONGER WINDS ALOFT WILL MOVE OVER CENTRAL WYOMING MONDAY. A WEAK
COLD FRONT THAT HAS BROUGHT EAST WINDS AND LOW LEVEL MOISTURE TO THE
AREA WILL ERODE RAPIDLY WITH THE STRONGER WINDS AND VERY DRY AIR
MIXING DOWN TO THE SURFACE FROM NOON TO 3 PM MDT. THE AIR MASS WILL
BECOME VERY UNSTABLE ALLOWING SMOKE COLUMNS TO RISE SEVERAL THOUSAND
FEET ABOVE THE GROUND. THE STRONG WIND AND LOW RELATIVE HUMIDITY
WILL CONTINUE UNTIL ABOUT 9 PM MDT.

in the west STRONGER WIND AND VERY DRY AIR WILL MOVE OVER WESTERN
WYOMING ON MONDAY. IN THE FAR NORTH ISOLATED SHOWERS AND
THUNDERSTORMS ARE EXPECTED IN THE AFTERNOON AND EVENING ON MONDAY.
SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED TO INCREASE AND
SPREAD SOUTH TO THE NORTHERN TETONS AND TOGWOTEE PASS THROUGH THE
WEEK. TO THE SOUTH DRY CONDITIONS ARE EXPECTED TO CONTINUE.

&&

.RIW Watches/Warnings/Advisories...

Fire Weather Watch from Monday afternoon through Monday evening
for WYZ280-283-285-287-288.

&&

$$

SHORT TERM...C.Baker
LONG TERM...C.Baker
AVIATION...AR
FIRE WEATHER...C.Baker



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