000
FXUS65 KSLC 180320
AFDSLC
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
920 PM MDT FRI SEP 17 2010
.SYNOPSIS...A VERY DRY AND UNSEASONABLY WARM SOUTHWESTERLY FLOW
WILL REMAIN ACROSS THE GREAT BASIN THROUGH THE WEEKEND. A COLD
FRONT WILL PUSH THROUGH THE STATE MONDAY. SOUTHWEST FLOW WILL
RETURN BY MIDWEEK BEFORE ANOTHER TROUGH AFFECTS THE REGION ON
THURSDAY.
&&
.DISCUSSION...A VERY DRY AND UNSEASONABLY WARM SOUTHWESTERLY FLOW
ALOFT WILL RESIDE ACROSS THE GREAT BASIN THROUGH THE UPCOMING
WEEKEND. VERY LITTLE CHANGES IN THE GUIDANCE FROM FRIDAY TO
SATURDAY WITH THE EXCEPTION OF PERHAPS SOME THIN CIRRUS ACROSS THE
NORTH. AS SUCH EXPECT A CARBON COPY ON SATURDAY WITH VERY LOW RH
AND ABOVE CLIMO TEMPS.
SOUTHWESTERLY FLOW INCREASES ON SUNDAY WHICH SHOULD RESULT IN
BREEZY TO WINDY CONDITIONS AREAWIDE...AS WELL AS SLIGHTLY WARMER
MAX TEMPERATURES. THIS IS IN ADVANCE OF A DRY COLD FRONT WHICH IS
FORECAST TO PUSH THROUGH NORTHERN UT DURING THE DAY MONDAY...THEN
ACROSS THE REMAINDER OF THE AREA MONDAY NIGHT. THIS FRONT LOOKS TO
KNOCK TEMPS BACK DOWN TO NEAR CLIMO FOR TUESDAY.
OVERALL A QUIET NIGHT WITH NO UPDATES ANTICIPATED.
&&
.AVIATION...VFR CONDITIONS WITH SOUTH WINDS CAN BE EXPECTED
THROUGHOUT THE OVERNIGHT AT KSLC.
&&
.FIRE WEATHER...THE VERY DRY AND WARM AIRMASS ACROSS THE GREAT BASIN
WILL REMAIN THROUGH THE WEEKEND. INCREASING SOUTHERLY WINDS THE NEXT
COUPLE OF DAYS COMBINED WITH DRY FUELS...VERY LOW RH VALUES AND POOR
OVERNIGHT RECOVERIES WILL RESULT IN SEVERE FIRE WEATHER CONDITIONS
THROUGH AT LEAST SUNDAY. RED FLAG WARNINGS WILL REMAIN IN EFFECT
OVER MOST FIRE DISTRICTS DURING THE AFTERNOON/EVENING HOURS THROUGH
THE WEEKEND.
THE APPROACHING PACIFIC TROUGH RESPONSIBLE FOR THE INCREASING
SOUTHERLY WINDS WILL WEAKEN AND ACCELERATE EAST ACROSS THE NRN
ROCKIES/FAR NRN GREAT BASIN SUNDAY NIGHT/MONDAY. THE ASSOCIATED COLD
FRONT LOOKS TO BE FOR THE MOST PART DRY ACROSS FAR NRN UTAH MONDAY.
SIGNIFICANTLY COOLER AIR WILL STREAM SOUTH THROUGH NRN/CNTRL EARLY
IN THE WEEK. SOME OF THE COOLER AIR WILL TRICKLE INTO SRN UTAH LATE
MONDAY...THOUGH THE AFFECTS ON TEMPS/RH LOOK MINIMAL AT THIS TIME. A
DRY WEST SOUTHWESTERLY FLOW WILL QUICKLY RETURN MIDWEEK AND REMAIN
OVER THE AREA DURING THE BALANCE OF THE WEEK.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...RED FLAG WARNING UNTIL 9 PM MDT THIS EVENING FOR
UTZ420-423-424-426-427-431>441.
RED FLAG WARNING FROM NOON SATURDAY TO 9 PM MDT SUNDAY FOR
UTZ420-423-424-426-427-431>441-445>449.
FIRE WEATHER WATCH FROM NOON SUNDAY TO 9 PM SUNDAY FOR
UTZ445>449.
WY...NONE.
&&
$$
SEAMAN/CONGER
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
FOR FREQUENTLY ASKED QUESTIONS ABOUT THE AREA FORECAST DISCUSSION
VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/GENERAL/AFD_FAQS.PHP (ALL LOWER CASE)
