853
FNUS55 KSLC 291549
FWFSLC
FIRE WEATHER PLANNING FORECAST FOR UTAH
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
949 AM MDT THU OCT 29 2009
NOTICE TO ALL USERS: THE LAST FIRE WEATHER PLANNING FORECAST
FOR 2009 WILL BE ISSUED THE MORNING OF OCTOBER 30. SPOT
FORECASTS ARE AVAILABLE AT ANY TIME THROUGH THE NORMAL SPOT
FORECAST REQUEST PROCEDURES.
..STABILITY TRENDS WILL INCREASE RAPIDLY STARTING TONIGHT
BROADCAST DISCUSSION
A STRONG COLD STORM SYSTEM WILL CROSS
COLORADO AND NEAR THE PLAINS TODAY AND TONIGHT. HIGH PRESSURE
WILL RETURN TO THE AREA FOR THE WEEKEND.
DISCUSSION
THE BROAD UPPER LOW SPINNING OVER THE FOUR CORNERS
WILL SLOWLY PROGRESS EAST TODAY THROUGH TONIGHT LEAVING THE STATE
UNDER DEEP NORTHERLY FLOW THROUGH THAT TIME. LOW LEVEL INSTABILITY
REMAINS IN PLACE ACROSS THE STATE TODAY...AS DOES THE POTENTIAL FOR
MODERATE NORTHERLY WINDS. AS A RESULT...MOST AREAS WILL HAVE A
WINDOW OF CLEARING INDEX VALUES PEAKING ABOVE 500 MIDDAY THROUGH
EARLY THIS EVENING.
CLOUD COVER WILL INCREASE RAPIDLY THIS AFTERNOON IN ADVANCE OF AN
APPROACHING WARM FRONT THAT AT THIS TIME IS DRAPED NORTH TO SOUTH
OVER WESTERN NEVADA. THE COMBINATION OF THE AFOREMENTIONED LOW LEVEL
INSTABILITY WITH INCREASING MOISTURE TRENDS WILL RETAIN ISOLATED
TO SCATTERED SNOW SHOWER POTENTIAL ACROSS MAINLY THE MOUNTAINS OF
NORTHERN...CENTRAL...AND EASTERN UTAH. PASSAGE OF THE WARM FRONT
OVERNIGHT TONIGHT WILL INCREASE COVERAGE OF SNOW SHOWERS OVER NORTHERN
UTAH THROUGH MIDDAY FRIDAY...BUT OF MORE IMPORTANCE FOR FIRE WEATHER
PLANNING...WILL ALSO DRAMATICALLY INCREASE STABILITY ACROSS THE REGION
LOWERING CLEARING INDICES SIGNIFICANTLY BY EARLY FRIDAY MORNING.
HIGH PRESSURE WILL BUILD OVER NORTHERN UTAH AS A FLAT RIDGE PUSHES
THROUGH THE GREAT BASIN REGION THIS WEEKEND. A STOUT WARMING TREND
WILL ENSUE AS A RESULT UNDER AN INCREASINGLY STABLE AIRMASS. CLEARING
INDICES WILL REMAIN SUBDUED DUE TO THIS...WITH VERY LITTLE RECOVERY
THROUGH EARLY/MID NEXT WEEK.
***THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS***
***ALL WINDS ARE 20 FOOT...10-MINUTE AVERAGES***
UTZ420>427-300045-
FORECAST AREA 1...NORTHERN UTAH (NORTHERN UTAH IFC AREA)-
ZONE 420 GREAT SALT LAKE DESERT AND MOUNTAINS...ZONE 421 CACHE
VALLEY...ZONE 422 NORTHERN WASATCH FRONT...ZONE 423 SALT LAKE AND
TOOELE VALLEYS...ZONE 424 SOUTHERN WASATCH FRONT...ZONE
425 WASATCH MOUNTAIN VALLEYS...ZONE 426 WASATCH MOUNTAINS NORTH
OF I_80...ZONE 427 WASATCH MOUNTAINS SOUTH OF I_80 AND NORTHERN
AND WESTERN SLOPES OF THE UINTA MOUNTAINS-
949 AM MDT THU OCT 29 2009
TODAY
SKY/WEATHER.........PARTLY CLOUDY (30-40 PCT CLOUD COVER) IN THE
VALLEYS AND PARTLY CLOUDY (50-60 PCT CLOUD
COVER) IN THE MOUNTAINS AND ISOLATED SNOW
SHOWERS IN THE VALLEYS AND SCATTERED SNOW
SHOWERS IN THE MOUNTAINS.
MAX TEMPERATURE.....NEAR 5000 FEET...37-44.
NEAR 8000 FEET...23-29.
MIN HUMIDITY........NEAR 5000 FEET...33-43 PERCENT.
NEAR 8000 FEET...55-65 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......NORTHWEST 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
TONIGHT
SKY/WEATHER.........IN THE VALLEYS...PARTLY CLOUDY (55-65 PCT CLOUD
COVER) UNTIL 2400...THEN MOSTLY CLOUDY (75-85
PCT CLOUD COVER)...ISOLATED SNOW AFTER 2400. IN
THE MOUNTAINS...PARTLY CLOUDY (40-50 PCT CLOUD
COVER) UNTIL 2400...THEN MOSTLY CLOUDY (70-80
PCT CLOUD COVER)...ISOLATED SNOW SHOWERS.
MIN TEMPERATURE.....NEAR 5000 FEET...22-30.
NEAR 8000 FEET...9-19.
MAX HUMIDITY........NEAR 5000 FEET...77-87 PERCENT.
NEAR 8000 FEET...89-99 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......WEST 10-20 MPH SHIFTING TO THE
15-25 MPH AFTER MIDNIGHT.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PCT CLOUD COVER) UNTIL
1200...THEN PARTLY CLOUDY (50-60 PCT CLOUD
COVER). ISOLATED RAIN AND SNOW SHOWERS IN THE
VALLEYS AND SCATTERED OF SNOW SHOWERS
IN THE MOUNTAINS.
MAX TEMPERATURE.....NEAR 5000 FEET...44-54.
NEAR 8000 FEET...35-41.
MIN HUMIDITY........NEAR 5000 FEET...38-48 PERCENT.
NEAR 8000 FEET...54-64 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......WEST 20-30 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
=
UTZ433-434-436-438-300045-
FORECAST AREA 2...CENTRAL UTAH (RICHFIELD IFC AREA)-
ZONE 433 SANPETE AND SEVIER VALLEYS...ZONE 434 WEST CENTRAL
DESERTS AND MOUNTAINS...ZONE 436 CENTRAL UTAH MOUNTAINS...ZONE
438 HENRY MOUNTAINS-
949 AM MDT THU OCT 29 2009
TODAY
SKY/WEATHER.........IN THE VALLEYS...PARTLY CLOUDY (40-50 PCT CLOUD
COVER)...ISOLATED SNOW SHOWERS. IN THE
MOUNTAINS...MOSTLY CLOUDY (65-75 PCT CLOUD
COVER) UNTIL 1200...THEN PARTLY CLOUDY (45-55
PCT CLOUD COVER)...SCATTERED SNOW SHOWERS.
MAX TEMPERATURE.....NEAR 5000 FEET...35-45.
NEAR 8000 FEET...24-34.
MIN HUMIDITY........NEAR 5000 FEET...34-44 PERCENT.
NEAR 8000 FEET...50-60 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH
BECOMING NORTH 10-15 MPH IN
THE AFTERNOON.
RIDGETOPS......NORTHWEST 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (45-55 PCT CLOUD COVER) UNTIL
2400...THEN MOSTLY CLOUDY (65-75 PCT CLOUD
COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...18-28.
NEAR 8000 FEET...10-20.
MAX HUMIDITY........NEAR 5000 FEET...69-79 PERCENT.
NEAR 8000 FEET...79-89 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTHWEST 10-20 MPH SHIFTING TO
THE WEST AFTER MIDNIGHT.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PCT CLOUD COVER) UNTIL
1200...THEN PARTLY CLOUDY (45-55 PCT CLOUD
COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...47-57.
NEAR 8000 FEET...37-47.
MIN HUMIDITY........NEAR 5000 FEET...30-40 PERCENT.
NEAR 8000 FEET...40-50 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......NORTHWEST 15-25 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
=
UTZ435-437-439>441-300045-
FORECAST AREA 3...SOUTHWEST UTAH (CEDAR CITY IFC AREA)-
ZONE 435 SOUTHWEST DESERTS AND MOUNTAINS...ZONE 437 SOUTHWEST AND
SOUTH CENTRAL MOUNTAINS...ZONE 439 UTAHS DIXIE AND ZION
CANYON...ZONE 440 SOUTH CENTRAL UTAH...ZONE 441 GLEN CANYON
RECREATION AREA/LAKE POWELL-
949 AM MDT THU OCT 29 2009
TODAY
SKY/WEATHER.........PARTLY CLOUDY (35-45 PCT CLOUD COVER) IN THE
VALLEYS AND PARTLY CLOUDY (50-60 PCT CLOUD
COVER) IN THE MOUNTAINS. ISOLATED SNOW
SHOWERS.
MAX TEMPERATURE.....NEAR 3000 FEET...AROUND 55.
NEAR 5000 FEET...39-49.
NEAR 8000 FEET...27-37.
MIN HUMIDITY........NEAR 3000 FEET...20 PERCENT.
NEAR 5000 FEET...25-35 PERCENT.
NEAR 8000 FEET...43-53 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH AROUND 15 MPH.
RIDGETOPS......NORTH 15-25 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PCT CLOUD COVER) IN THE
VALLEYS AND PARTLY CLOUDY (30-40 PCT CLOUD
COVER) IN THE MOUNTAINS.
MIN TEMPERATURE.....NEAR 3000 FEET...35-41.
NEAR 5000 FEET...20-30.
NEAR 8000 FEET...11-21.
MAX HUMIDITY........NEAR 3000 FEET...37-47 PERCENT.
NEAR 5000 FEET...61-71 PERCENT.
NEAR 8000 FEET...74-84 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH AROUND 5 TO 15 MPH SHIFTING TO
THE WEST AFTER MIDNIGHT.
RIDGETOPS......NORTH 15-25 MPH SHIFTING TO THE
NORTHWEST 10-20 MPH AFTER
MIDNIGHT.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY (40-50 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 3000 FEET...65-68.
NEAR 5000 FEET...52-62.
NEAR 8000 FEET...43-51.
MIN HUMIDITY........NEAR 3000 FEET...20 PERCENT.
NEAR 5000 FEET...23-33 PERCENT.
NEAR 8000 FEET...26-36 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH
BECOMING WEST AROUND 15 MPH IN
THE AFTERNOON.
RIDGETOPS......NORTHWEST 10-20 MPH SHIFTING TO
THE 15-25 MPH IN THE AFTERNOON.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
=
UTZ431-432-445>449-300045-
FORECAST AREA 4...SOUTHEAST AND EAST CENTRAL UTAH (MOAB IFC AREA)-
ZONE 431 EASTERN SLOPE WASATCH PLATEAU AND CASTLE VALLEY...ZONE
432 SOUTHWEST TAVAPUTS PLATEAU/BOOK CLIFFS AND THE SAN RAFAEL
SWELL...ZONE 445 GRAND FLAT...ROAN AND BOOK CLIFFS...ZONE
446 ARCHES NATIONAL PARK AND SURROUNDING AREAS...ZONE
447 CANYONLANDS NATIONAL PARK AND BRIDGES NATIONAL
MONUMENT...ZONE 448 LA SAL AND ABAJO MOUNTAINS...ZONE
449 SOUTHERN SAN JUAN COUNTY-
949 AM MDT THU OCT 29 2009
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PCT CLOUD COVER) UNTIL
1200...THEN PARTLY CLOUDY (55-65 PCT CLOUD
COVER). IN THE VALLEYS...ISOLATED RAIN AND SNOW SHOWERS.
IN THE MOUNTAINS...SCATTERED SNOW SHOWERS.
MAX TEMPERATURE.....NEAR 5000 FEET...32-42.
NEAR 8000 FEET...24-34.
MIN HUMIDITY........NEAR 5000 FEET...43-53 PERCENT.
NEAR 8000 FEET...49-59 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH 10-15 MPH WITH GUSTS TO 20 MPH IN
THE AFTERNOON.
RIDGETOPS......NORTH 15-25 MPH.
LAL.................1.
CWR.................10 PERCENT.
HAINES INDEX........2 ..VERY LOW.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...18-28.
NEAR 8000 FEET...12-22.
MAX HUMIDITY........NEAR 5000 FEET...69-79 PERCENT.
NEAR 8000 FEET...72-82 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH 10-15 MPH IN THE
EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTH 15-25 MPH DECREASING TO
NORTHWEST 10-20 MPH AFTER
MIDNIGHT.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY (45-55 PCT CLOUD COVER). IN THE
MOUNTAINS...ISOLATED SNOW SHOWERS.
MAX TEMPERATURE.....NEAR 5000 FEET...39-49.
NEAR 8000 FEET...37-47.
MIN HUMIDITY........NEAR 5000 FEET...38-48 PERCENT.
NEAR 8000 FEET...38-48 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......NORTHWEST 20-30 MPH SHIFTING TO
THE WEST 10-20 MPH IN THE
AFTERNOON.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
=
FORECAST DAYS 3 THROUGH 7
SATURDAY
MOSTLY CLEAR. ISOLATED RAIN AND SNOW SHOWERS IN THE NORTHERN
MOUNTAINS. LOWS AROUND 30 IN THE VALLEYS AND IN THE MID 20S IN THE MOUNTAINS.
HIGHS IN THE UPPER 50S IN THE VALLEYS AND IN THE LOWER 50S IN THE MOUNTAINS.
WINDS GENERALLY LESS THAN 15 MPH.
SUNDAY
MOSTLY CLEAR. LOCAL RAIN AND SNOW. LOWS IN THE MID 30S
IN THE VALLEYS AND AROUND 30 IN THE MOUNTAINS. HIGHS IN THE LOWER
60S IN THE VALLEYS AND IN THE LOWER 50S IN THE MOUNTAINS. WINDS
GENERALLY LESS THAN 15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 30S IN THE VALLEYS AND
AROUND 30 IN THE MOUNTAINS. HIGHS IN THE MID 60S IN THE VALLEYS
AND IN THE MID 50S IN THE MOUNTAINS. WINDS GENERALLY LESS THAN
15 MPH.
TUESDAY
MOSTLY CLEAR. LOWS IN THE MID 30S IN THE VALLEYS AND
IN THE LOWER 30S IN THE MOUNTAINS. HIGHS IN THE MID 60S IN THE
VALLEYS AND IN THE MID 50S IN THE MOUNTAINS.
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID 30S IN THE VALLEYS AND
IN THE LOWER 30S IN THE MOUNTAINS. HIGHS IN THE MID 60S IN THE
VALLEYS AND IN THE MID 50S IN THE MOUNTAINS.
.8-14 DAY OUTLOOK FOR THURSDAY NOVEMBER 05 TO WEDNESDAY NOVEMBER 11
TEMPERATURE... ABOVE NORMAL
PRECIPITATION... NEAR NORMAL
=
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