FNUS75 KSLC 172101
FWSSLC

SPOT FORECAST FOR WIGNAL
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
301 PM MDT WED JUL 17 2013

.DISCUSSION...UPPER LEVEL RIDGE OVER THE EASTERN GREAT BASIN TODAY
WILL SHIFT SLOWLY TO THE WEST OVER THE NEXT SEVERAL DAYS. VERY
MOIST AIRMASS IN PLACE TODAY WILL RESULT IN SCATTERED
THUNDERSTORMS OVER THE HIGHER TERRAIN IN THE VICINITY OF THE FIRE
TODAY. THERE IS A GOOD CHANCE THAT OUTFLOW BOUNDARIES FROM NEARBY
CONVECTION WILL IMPACT THE FIRE LOCATION AT TIMES THIS AFTERNOON
AND EVENING. THE OUTFLOW WILL BE CAPABLE OF BRINGING GUSTY AND
ERRATIC WINDS TO THE FIRE. OTHERWISE...AWAY FROM OUTFLOW WINDS
WILL LARGELY BE TERRAIN DRIVEN. WITH THE MOIST AIRMASS IN
PLACE...AFTERNOON MINIMUM RELATIVE HUMIDITY READINGS WILL BE HIGH
WITH GOOD OVERNIGHT RECOVERY EXPECTED.

A LITTLE DRIER AIR WILL BEGIN TO MOVE INTO NORTHWEST UTAH ON
THURSDAY AFTERNOON AND EXPECT A LITTLE LESS COVERAGE OF
THUNDERSTORMS ON THURSDAY AS A RESULT. HEADING INTO THE LATTER
PORTION OF THE WEEK TEMPERATURES WILL SLOWLY CLIMB AND AFTERNOON
HUMIDITY VALUES WILL DROP. OVERNIGHT RECOVERY WILL NOT BE NEARLY
AS GOOD AND WINDS WILL LARGELY BE TERRAIN DRIVEN BENEATH LIGHT
FLOW ALOFT. WITH MUCH DRIER AIR MOVING INTO THE STATE THE TREAT
FOR THUNDERSTORMS WILL DECREASE DRAMATICALLY FRIDAY THROUGH THE
WEEKEND.


.REST OF TODAY...
  LAL.................4.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......830.
  SKY/WEATHER.........PARTLY CLOUDY (60-70 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS.
  MAX TEMPERATURE.....86-89.
  MIN HUMIDITY........30-34 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE WINDS FROM THE SOUTHWEST WINDS 5 TO
                      10 MPH WITH GUSTS TO 15 MPH. GUSTY ERRATIC
                      WINDS POSSIBLE NEAR THUNDERSTORMS.

.TONIGHT...
  LAL.................4 UNTIL MIDNIGHT...THEN 2.
  HAINES INDEX........3 ..VERY LOW.
  SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL
                      MIDNIGHT...THEN A SLIGHT CHANCE OF SHOWERS
                      AND THUNDERSTORMS.
  MIN TEMPERATURE.....55-59.
  MAX HUMIDITY........75-80 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST 5 TO 10 MPH WITH GUSTS TO 15 MPH BECOMING
                      DOWNSLOPE 3 TO 8 MPH.

.OUTLOOK FOR THURSDAY...
  LAL.................1 UNTIL NOON...THEN 3.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......580.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
                      AFTERNOON.
  MAX TEMPERATURE.....86-90.
  MIN HUMIDITY........28-32 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST UPSLOPE WINDS 5 TO 10 MPH WITH GUSTS
                      TO 15 MPH. GUSTY ERRATIC WINDS POSSIBLE NEAR
                      THUNDERSTORMS.

FORECASTER...GRAHAM
REQUESTED BY...KALLIE BAILEY
REASON FOR REQUEST...WILDFIRE
.TAG 20130717.WIGNA.01/SLC

$$