FNUS75 KSLC 251646
FWSSLC

SPOT FORECAST FOR HENRY KNOLLS RX
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1046 AM MDT SUN SEP 25 2011

.DISCUSSION...SOUTHWESTERLY FLOW WILL ALLOW A LIMITED AMOUNT OF
MOISTURE TO RETURN TO THE AREA TODAY...WHICH SHOULD BE SUFFICIENT
FOR ISOLATED HIGH BASED SHOWERS AND DRY THUNDERSTORMS AROUND THE
AREA THIS AFTERNOON AND EVENING. GUSTY ERRATIC WINDS CAN BE
EXPECTED NEAR THUNDERSTORMS OR AREAS OF VIRGA. THIS SOUTHWESTERLY
FLOW IS EXPECTED TO SURFACE THIS AFTERNOON AND BECOME THE DOMINANT
FLOW THROUGH THIS EVENING.

OTHERWISE A WEAKENING STORM SYSTEM FORECAST TO PASS NORTH OF THE
AREA WILL PUSH A COLD FRONT TOWARD THE SITE DURING THE DAY MONDAY.
THIS FRONT IS EXPECTED TO BE WEAKENING AS IT APPROACHES THE
AREA...THUS IS NOT EXPECTED TO HAVE A SIGNIFICANT IMPACT ON WINDS.
HOWEVER...IT MAY BE SUFFICIENT TO PRODUCE A COUPLE OF SHOWERS AND
THUNDERSTORMS MONDAY AFTERNOON THROUGH EARLY EVENING.

IN THE WAKE OF THIS SYSTEM...HIGH PRESSURE ALOFT IS FORECAST TO
STRENGTHEN ACROSS THE REGION DURING THE MIDDLE TO LATTER PORTION
OF THE UPCOMING WEEK. THIS WILL RESULT IN WARM AND DRY CONDITIONS
WITH POOR VENTILATION BEGINNING TUESDAY.

.TODAY...
  LAL.................1 UNTIL NOON...THEN 2.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......910.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF HIGH BASED SHOWERS AND DRY
                      THUNDERSTORMS AFTER NOON.
  MAX TEMPERATURE.....NEAR 70.
  MIN HUMIDITY........20-23 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE 3-8 MPH BECOMING SOUTHWEST 5-10 MPH.
                      WITH GUSTS TO 15 MPH AFTER 1200.

.TONIGHT...
  LAL.................2 UNTIL MIDNIGHT...THEN 1.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT CLOUD COVER). A
                      SLIGHT CHANCE OF HIGH BASED SHOWERS AND DRY
                      THUNDERSTORMS UNTIL MIDNIGHT.
  MIN TEMPERATURE.....43-46.
  MAX HUMIDITY........47-50 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 5-10 MPH BECOMING DOWNSLOPE 4-9 MPH
                      AFTER 2000.

.OUTLOOK FOR MONDAY...
  LAL.................2.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......580.
  SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER) THEN
                      BECOMING PARTLY CLOUDY (30-40 PERCENT CLOUD
                      COVER). A SLIGHT CHANCE OF SHOWERS AND
                      THUNDERSTORMS AFTER 1200.
  MAX TEMPERATURE.....63-66.
  MIN HUMIDITY........30-33 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE 4-9 MPH.



FORECASTER...SEAMAN
REQUESTED BY...BODE MECHAM
REASON FOR REQUEST...PRESCRIBED
.TAG 20110925.HENRY.01/SLC

$$