FNUS75 KSLC 181549
FWSSLC

SPOT FORECAST FOR AMOS CANYON WFM
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
949 AM MDT SAT JUL 18 2009

.DISCUSSION...A RIDGE OF HIGH PRESSURE WILL REMAIN IN PLACE
ACROSS THE REGION THROUGHOUT THE WEEKEND...RESULTING IN HOT
DAYTIME TEMPERATURES AND LOW RELATIVE HUMIDITY WITH POOR
OVERNIGHT RECOVERY. WINDS WILL GENERALLY REMAIN LIGHT AND
DRIVEN BY TERRAIN FLOWS...HOWEVER A WEAK DISTURBANCE MOVING
THROUGH THE RIDGE WILL LIKELY SWITCH RIDGELINE WINDS TO THE
WEST SUNDAY AFTERNOON. HIGH BASED MOISTURE IS EXPECTED TO
SLOWLY INCREASE TODAY THROUGH SUNDAY. THIS WILL BRING A SMALL
CHANCE FOR THUNDERSTORMS THIS AFTERNOON NEAR THE BURN
AREA...WITH A BETTER CHANCE SUNDAY AFTERNOON AND EVENING.
GIVEN THE DRY LOW LEVELS IN PLACE...DRY LIGHTNING AND STRONG
WINDS WILL BE POSSIBLE WITH ANY STORMS WHICH DEVELOP...WITH
LITTLE IF ANY PRECIPITATION EXPECTED.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......800.
  SKY/WEATHER.........MOSTLY SUNNY (0-10 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN PARTLY CLOUDY (40-50
                      PERCENT CLOUD COVER). A FEW AFTERNOON
                      BUILDUPS WITH AN ISOLATED DRY THUNDERSTORM
                      OR TWO AFTER 1200.
  MAX TEMPERATURE.....87-90.
  MIN HUMIDITY........10-13 PERCENT.
  WINDS - 20-FOOT.....UPVALLEY/UPSLOPE 4-9 MPH. GUSTY ERRATIC
                      WINDS NEAR THUNDERSTORMS OR AREAS OF VIRGA.

.TONIGHT...
  LAL.................2 UNTIL 2100...THEN 1.
  HAINES INDEX........6 ..HIGH.
  SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT CLOUD COVER)
                      WITH AN ISOLATED DRY THUNDERSTORM OR TWO
                      UNTIL 2100...THEN BECOMING MOSTLY CLEAR
                      (20-30 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....64-67.
  MAX HUMIDITY........23-26 PERCENT.
  WINDS - 20-FOOT.....DOWNVALLEY/DOWNSLOPE 4-9 MPH.

.OUTLOOK FOR SUNDAY...
  LAL.................1 UNTIL NOON...THEN 6.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER)
                      UNTIL 1100...THEN PARTLY CLOUDY (55-65
                      PERCENT CLOUD COVER). WIDELY SCATTERED
                      DRY THUNDERSTORMS AFTER 1200.
  MAX TEMPERATURE.....83-86.
  MIN HUMIDITY........12-15 PERCENT.
  WINDS - 20-FOOT.....DOWNVALLEY/DOWNSLOPE 3-6 MPH BECOMING
                      UPVALLEY/UPSLOPE 4-9 MPH AFTER 1100.
                      RIDGELINE WINDS BECOMING WEST 8-15
                      MPH DURING THE AFTERNOON. GUSTY
                      ERRATIC WINDS POSSIBLE NEAR
                      THUNDERSTORMS OR AREAS OF VIRGA.


FORECASTER...SEAMAN
REQUESTED BY...RICHFIELD DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20090718.AMOSC.01/SLC

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