Area Forecast Discussion
Issued by NWS Reno, NV

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000
FXUS65 KREV 252136
AFDREV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
236 PM PDT SAT APR 25 2015

.SYNOPSIS...
LOW PRESSURE THAT BROUGHT RAIN AND SNOW SHOWERS TO THE REGION
SATURDAY WILL MOVE EAST TONIGHT, BRINGING PARTIAL CLEARING AND
PATCHY AREAS OF FOG. HIGH PRESSURE WILL BUILD OVER THE SIERRA AND
WESTERN NEVADA STARTING LATE SUNDAY, WITH AFTERNOON HIGHS WARMING
INTO THE 70S AND 80S FOR MID WEEK. A WEAK SYSTEM WILL PASS NORTH
OF THE REGION WEDNESDAY AND THURSDAY WITH A FEW SPRINKLES POSSIBLE
NORTH OF SUSANVILLE.

&&

.SHORT TERM...
THE FINAL PORTION OF THE SYSTEM THAT BROUGHT SNOW TO THE MOUNTAINS
AND RAIN TO THE VALLEYS TODAY...THE COLD UPPER TROUGH...IS MOVING
EAST THIS EVENING. ENOUGH INSTABILITY REMAINS FOR A FEW THUNDERSTORMS
EAST OF YERINGTON AND MAMMOTH LAKES EARLY THIS EVENING. A SECONDARY
SHORT WAVE ROUNDING THE BASE OF THIS TROUGH WILL KEEP A SMALL CHANCE
FOR SHOWERS ACROSS MUCH OF THE AREA THROUGH THE EVENING...BUT THE
BEST CHANCES WILL BE NORTH OF A LINE FROM GERLACH TO SUSANVILLE AND
EAST OF A LINE FROM LOVELOCK TO BRIDGEPORT.

PARTIAL CLEARING OVERNIGHT AND DECREASING WINDS WILL ALLOW FOR THE
FORMATION OF PATCHY FOG IN THE FAVORED SIERRA VALLEYS LATE
TONIGHT. TEMPS SHOULD COOL A LITTLE TONIGHT FROM THEIR READINGS
LAST NIGHT IN MOST LOCATIONS.

AS THE RIDGE BEGINS TO BUILD SUNDAY...THE PRESSURE GRADIENT WILL
BE STRONG ENOUGH TO SUPPORT INCREASED NORTH-NORTHWEST FLOW OVER
THE BASIN AND RANGE. THUS...GUSTY WINDS ARE POSSIBLE THROUGH THE
BASIN AND RANGE WITH THE STRONGEST WINDS SOUTH OF HAWTHORNE. GUSTS
UP TO 40 MPH ARE POSSIBLE THERE. PYRAMID LAKE COULD BE GUSTY AS
WELL...BUT WE DO NOT ANTICIPATE ANY LAKE WIND ADVISORIES FOR
SUNDAY.

AFTER SUNDAY THE RIDGE BUILDS WITH WARMING TEMPS. HIGH TEMPS
SHOULD REACH WELL ABOVE AVERAGE BY MONDAY AND TUESDAY...POSSIBLY
TOPPING 80 IN THE WESTERN NEVADA VALLEYS TUESDAY. THE RIDGE AXIS
DOES SLIDE A LITTLE EAST TUESDAY AND THIS MAY ALLOW FOR SLIGHTLY
STRONGER WINDS AND A FEW CLOUDS OVER THE FAR NORTHWEST CWA. 20

.LONG TERM...

NO SIGNIFICANT CHANGES TO THE FORECAST TODAY. BY WEDNESDAY, A TROUGH
WILL BE MOVING INTO THE PACIFIC NORTHWEST BRUSHING BY NORTHERN
CA/NV. EXPECT MOSTLY DRY CONDITIONS WITH ABOVE AVERAGE TEMPERATURES
THROUGH NEXT WEEK. AT THIS TIME IT APPEARS ANY PRECIPITATION MAKING
INTO THE REGION WILL BE LIGHT AND CONFINED TO AROUND THE OREGON
BORDER.

TEMPERATURES WILL COOL DOWN SLIGHTLY FOR THE END OF THE WEEK AS THE
TROUGH BRUSHES BY THE AREA. HIGH TEMPERATURES IN THE LOW 80`S IN
WESTERN NEVADA SHOULD DROP TO THE MID 70`S BY THE END OF THE WEEK.
IN THE SIERRA TEMPERATURES WILL COOL SLIGHTLY FROM THE LOW 70`S TO
THE UPPER 60`S FOR THE END OF THE WEEK.

BY FRIDAY MODELS BEGIN TO DIVERGE AS A WEAK TROUGH REMAINS OVER THE
SOUTHWEST U.S. A CUTOFF LOW MAY DEVELOP NEAR THE CALIFORNIA COAST,
DEPENDING ON THE LOCATION OF THE LOW PRESSURE SOME THUNDERSTORM
ACTIVITY COULD RETURN TO THE SIERRA BY THE END OF THE WEEK. TOLBY

&&

.AVIATION...

LIGHT SHOWERS CURRENTLY IN THE SIERRA AND WESTERN NEVADA WILL
CONTINUE TO TAPER OFF THROUGH 06Z WITH BRIEF VIS/CIG RESTRICTIONS
POSSIBLE, MOSTLY AT KTVL/KTRK. A FEW LIGHTNING STRIKES HAVE
ACCOMPANIED THE SHOWERS IN WESTERN NEVADA.

WEST TO NORTHWEST SURFACE WINDS GUSTING TO 25KTS WILL BEGIN TO TAPER
AFTER 04Z. EXPECT SOME AREAS OF FREEZING FOG TO DEVELOP IN SIERRA
VALLEYS FROM 10-16Z ESPECIALLY AT KTRK. TOLBY

&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...NONE.
CA...NONE.
&&

$$

FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/RENO (ALL LOWER CASE)



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