FNUS75 KSLC 141505
FWSSLC

SPOT FORECAST FOR PRETTY TREE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
905 AM MDT FRI MAY 14 2010

.DISCUSSION...A WEAK UPPER LEVEL LOW PRESSURE SYSTEM WILL CONTINUE
TO SPIN OVERHEAD TODAY BEFORE GRADUALLY PULLING OFF TO THE EAST
OVERNIGHT TONIGHT. RAIN AND SNOW SHOWERS WILL CONTINUE THIS
MORNING...STEADY AT TIMES...BEFORE PARTIALLY BREAKING AND LETTING
UP THIS AFTERNOON. SHOWER THREATS THIS AFTERNOON ARE EXPECTED TO
BE MORE CONVECTIVE AND SHORT LIVED...WITH ISOLATED THUNDER
POSSIBLE. LOW LEVEL INSTABILITY IS SUFFICIENT ENOUGH TO OVERWHELM
LACK OF SIGNIFICANT TRANSPORT WINDS FOR SOLID CLEARING INDICES
OVER 500 FOR TODAY...WITH TRENDS INCREASING AGAIN ON SATURDAY.
WARM AND DRY CONDITIONS WILL SET UP SUNDAY THROUGH THE EARLY PART
OF NEXT WEEK.


.TODAY...
LAL...................1 UNTIL NOON...THEN 3.
HAINES INDEX..........3 ..VERY LOW.
CLEARING INDEX........670.
SKY/WEATHER...........CLOUDY (90-100 PERCENT CLOUD COVER)
                      UNTIL NOON...THEN MOSTLY CLOUDY (80-90
                      PERCENT CLOUD COVER). RAIN AND SNOW THROUGH
                      NOON...THEN SCATTERED THUNDERSTORMS
                      AND SNOW SHOWERS AFTER NOON.
MAX TEMPERATURE.......45-50.
MIN HUMIDITY..........37-40 PERCENT.
WIND (20 FT)..........NORTHEAST WINDS 5 MPH.

.TONIGHT...
LAL...................3 UNTIL MIDNIGHT...THEN 1.
HAINES INDEX..........3 ..VERY LOW.
SKY/WEATHER...........MOSTLY CLOUDY (65-75 PERCENT CLOUD COVER)
                      UNTIL MIDNIGHT...THEN MOSTLY CLEAR (10-20
                      PERCENT CLOUD COVER). SCATTERED THUNDERSTORMS
                      AND SNOW SHOWERS UNTIL 2100.
MIN TEMPERATURE.......33-35.
MAX HUMIDITY..........58-60 PERCENT.
WIND (20 FT)..........NORTHWEST WINDS 5 TO 10 MPH.

.OUTLOOK FOR SATURDAY...
LAL...................1.
HAINES INDEX..........3 ..VERY LOW.
CLEARING INDEX........950.
SKY/WEATHER...........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER).
MAX TEMPERATURE.......60-62.
MIN HUMIDITY..........19-21 PERCENT.
WIND (20 FT)..........NORTHWEST WINDS 5 TO 10 MPH.



FORECASTER...MERRILL
REQUESTED BY...KEITH ADAMS
REASON FOR REQUEST...PRESCRIBED
.TAG 20100514.PRETT.01/SLC

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