FNUS75 KSLC 111038
FWSSLC

SPOT FORECAST FOR SPRING FIRE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
438 AM MDT THU AUG 11 2011

.DISCUSSION...A NEAR REPEAT OF WEATHER CONDITIONS TODAY COMPARED
TO YESTERDAY. THERE IS A VERY MINOR INCREASE IN MOISTURE TODAY SO
MINIMUM RELATIVE HUMIDITY SHOULD REMAIN ABOVE 15 PERCENT TODAY.
THE REASON FOR THE SLIGHT INCREASE IN MOISTURE IS DUE TO A WEAK
MID LEVEL DISTURBANCE WHICH WILL MOVE ACROSS THE WILDFIRE SITE
BETWEEN 0900 AND 1100 THIS MORNING. WINDS ARE EXPECTED TO SHIFT
FROM WEST SOUTHWEST THIS MORNING TO WEST NORTHWEST BEHIND THIS
DISTURBANCE. A RIDGE WILL DEVELOP FOR THURSDAY NIGHT AND FRIDAY
WHICH WILL KEEP THE PREVAILING FLOW ALOFT FROM THE WEST NORTHWEST.

.TODAY...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....72-74.
  MIN HUMIDITY........15-18 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO
                      15 MPH THIS MORNING SHIFTING TO THE WEST
                      NORTHWEST AT 10 TO 15 MPH WITH GUSTS TO
                      20-25 MPH BETWEEN 0900 AND 1100 MDT AND
                      CONTINUING AT THESE SPEEDS THROUGH THE
                      AFTERNOON.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........CLEAR (0-5 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....55-58.
  MAX HUMIDITY........26-29 PERCENT.
  WINDS - 20-FOOT.....WEST NORTHWEST WINDS 10-15 MPH EARLY IN
                      THE EVENING WITH GUSTS TO 25 MPH UP UNTIL
                      1900. BECOMING NORTHWEST 5 MPH BY MIDNIGHT.

.OUTLOOK FOR FRIDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....74-75.
  MIN HUMIDITY........12-14 PERCENT.
  WINDS - 20-FOOT.....WEST WINDS 5 MPH EARLY IN THE MORNING
                      BECOMING LIGHT AND VARIABLE...THEN BECOMING
                      WEST NORTHWEST AT 7-11 MPH WITH GUSTS 18 MPH
                      LATE IN THE AFTERNOON.



FORECASTER...STRUTHWOLF
REQUESTED BY...MARTELL GIBBONS
REASON FOR REQUEST...WILDFIRE
.TAG 20110810.SPRIN.02/SLC

$$