FXUS65 KLKN 200504
AFDLKN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ELKO NV
1003 PM PDT SUN SEP 19 2004

.SYNOPSIS...A STRONG PACIFIC LOW PRESSURE SYSTEM OVER NORTHERN
NEVADA WILL SLOWLY MOVE SOUTH AND EAST BEFORE HIGH PRESSURE RETURNS
TUESDAY. UNSEASONABLY COLD AIR WILL LINGER INTO TUESDAY. A WARMING
TREND DEVELOPS BY MIDWEEK...BUT MORNING LOWS WILL REMAIN BELOW
FREEZING THROUGH THE END OF THE WEEK.
&&

.UPDATE...COLD AIR ASSOCIATED WITH THE UPPER LEVEL TROUGH IS MOVING
ACROSS NORTHERN NEVADA. AIR OVER CENTRAL NEVADA HAS BEGUN TO
STABILIZE. OVER NORTHERN MOST PORTIONS OF NEVADA HOWEVER THE AIR
MASS IS STILL FAIRLY UNSTABLE. SAT AND RADAR IMAGERY SHOWING GOOD
MOISTURE OVER NORTHERN ELKO COUNTY AS WELL. WITH LOW FREEZING LEVELS
AND A MOIST/UNSTABLE AIR MASS...HAVE ISSUED A SNOW ADVISORY FOR
NORTHERN ELKO COUNTY FROM TONIGHT THROUGH 8 AM MONDAY MORNING FOR 2
TO 4 INCHES OF NEW SNOW. HAVE TAKEN ISOLATED THUNDERSTORMS OUT OF
ALL ZONES EXCEPT HUMBOLDT AND NORTHERN ELKO FOR TONIGHT. BY MORNING
THE COLD MOIST/UNSTABLE AIR DROPS FARTHER SOUTH. HAVE ISSUED A SNOW
ADVISORY FOR THE RUBY MOUNTAINS AND EAST HUMBOLDT RANGE FOR 3 TO 5
INCHES OF NEW SNOW MONDAY. BY LATE MONDAY THE TROUGH MOVES OFF TO THE
EAST...DRIER AIR MOVES OVER THE CWA...AND THE AIR MASS BEGINS TO
STABILIZE WITH 5H VALUES RISING. ROOD
&&

.PREV DISCUSSION...STRONG COLD FRONT LOCATED EAST OF WENDOVER TO ELY
ATTM WILL PUSH THROUGH REST OF WHITE COUNTY THIS AFTERNOON AND EARLY
EVENING. H7 FLOW WEAKENS OVERNIGHT OVER NVZ033 BUT WITH WINDS GUSTING
TO NEAR 40 MPH AT ENV WILL CONTINUE WIND ADVISORY...MAINLY DUE TO
FUNNELING EFFECT. GOOD 300/700 MB COUPLET ASSOCIATED WITH RIGHT REAR
QUADRANT OF EXITING 100 KT JET NVZ035 AND REMAINING OVER WHITE PINE
COUNTY THROUGH MONDAY. AT SAME TIME WILL CANCEL SNOW ADVISORY FOR
ELEVATIONS ABOVE 6000 FEET FOR ELKO COUNTY...BUT WILL MENTION LOCALLY
HEAVY AMOUNTS DUE TO CONVECTIVE SHOWERS AND THUNDERSTORMS AS PLENTY
OF RESIDUAL MOISTURE AND INSTABILITY PRESENT. AIRMASS STABILIZES LATE
MONDAY NIGHT AS UPPER LOW PUSHES TO NORTHWEST. WILL KEEP LINGERING
SHOWERS IN EASTERN CWA TUESDAY WITH DRY CONDITIONS REMAINDER OF CWA.
DRIER NORTHWEST FLOW MOVES IN ON TUESDAY AND CONTINUES THROUGH FRIDAY
WITH 3 TO 5 DEGREES OF WARMING EACH DAY...HOWEVER OVERNIGHT LOWS
REMAINING NEAR THE FREEZING MARK. H5 RIDGE BUILDS SATURDAY WITH
TEMPERATURES RETURNING NEAR NORMAL. HARMER
&&

.LKN WATCHES/WARNINGS/ADVISORIES...SNOW ADVISORY IN EFFECT FOR
NORTHERN ELKO COUNTY TONIGHT THROUGH 8 AM PDT MONDAY. SNOW ADVISORY
HAS BEEN ISSUED FOR THE RUBY MOUNTAINS AND EAST HUMBOLDT RANGE FOR
MONDAY FROM 4 AM PDT TO 4 PM PDT.
&&

$$