308
FNUS55 KSLC 152100
FWFSLC
FIRE WEATHER PLANNING FORECAST FOR UTAH
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
300 PM MDT THU MAY 15 2008
...RED FLAG WARNING IN EFFECT UNTIL 6 PM MDT THIS AFTERNOON FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONE 439
AND 440 BELOW 8000 FEET...
BROADCAST DISCUSSION
NORTH WINDS REMAIN IN PLACE TODAY ACROSS
MUCH OF THE STATE. IN SOUTHERN UTAH...THESE GUSTY WINDS HAVE
COMBINED WITH LOW RELATIVE HUMIDITIES TO CREATE CRITICAL OR NEAR
CRITICAL FIRE WEATHER CONDITIONS. HIGH PRESSURE WILL SETTLE OVER
THE AREA STARTING FRIDAY.
DISCUSSION
WINDS HAVE BEEN GUSTY THROUGH MUCH OF THE STATE
TODAY...INCLUDING IN SOUTHERN UTAH WHERE FUELS ARE CRITICALLY DRY
BELOW 8000 FEET...BUT RELATIVE HUMIDITIES HAVE PRIMARILY REMAINED
AT OR ABOVE CRITICAL VALUES DUE TO THE INCREASED MOISTURE THAT
MOVED INTO THE AREA YESTERDAY...WITH ISOLATED LOCATIONS LOWERING
TO NEAR 15 PERCENT HUMIDITY. SKIES HAVE BEGUN TO CLEAR IN MOST
PARTS OF THE STATE TODAY AS THE WEAK DISTURBANCE THAT BROUGHT
CLOUDS AND MOISTURE YESTERDAY HAS MOVED SOUTHWARD. THIS CLEARING
WILL CONTINUE INTO TONIGHT AND FRIDAY AS HIGH PRESSURE BUILDS
INTO THE AREA FOR THE WEEKEND. THIS HIGH PRESSURE WILL ALSO BRING
LIGHTER WINDS AND DRIER WARMER WEATHER TO THE ENTIRE STATE FOR
THE NEXT FEW DAYS.
***THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS***
***ALL WINDS ARE 20 FOOT...10-MINUTE AVERAGES***
UTZ420>427-161245-
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-
300 PM MDT THU MAY 15 2008
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...43-50.
NEAR 8000 FEET...29-39.
MAX HUMIDITY........NEAR 5000 FEET...56-66 PERCENT.
NEAR 8000 FEET...71-81 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH 10 TO 20 MPH IN THE
EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTH 15-25 MPH DECREASING TO
NORTHEAST 10-20 MPH AFTER
MIDNIGHT.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........SUNNY (0-5 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...70-80.
NEAR 8000 FEET...59-69.
MIN HUMIDITY........NEAR 5000 FEET...14-24 PERCENT.
NEAR 8000 FEET...28-38 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......EAST 10-15 MPH BECOMING
LIGHT AND VARIABLE IN THE
AFTERNOON.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
FRIDAY NIGHT
SKY/WEATHER.........CLEAR (0-5 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...46-55.
NEAR 8000 FEET...32-42.
MAX HUMIDITY........NEAR 5000 FEET...43-53 PERCENT.
NEAR 8000 FEET...58-68 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......LIGHT AND VARIABLE.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...75-85.
NEAR 8000 FEET...65-75.
MIN HUMIDITY........NEAR 5000 FEET...11-21 PERCENT.
NEAR 8000 FEET...26-36 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......LIGHT AND VARIABLE.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........4 ..LOW.
=
UTZ433-434-436-438-161245-
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-
300 PM MDT THU MAY 15 2008
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...39-49.
NEAR 8000 FEET...33-42.
MAX HUMIDITY........NEAR 5000 FEET...60-70 PERCENT.
NEAR 8000 FEET...60-70 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH 10-20 MPH IN THE
EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTH 15-25 MPH DECREASING TO
NORTHEAST 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........SUNNY (0-10 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...72-82.
NEAR 8000 FEET...58-68.
MIN HUMIDITY........NEAR 5000 FEET...10-20 PERCENT.
NEAR 8000 FEET...15-25 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......EAST 10-20 MPH BECOMING
LIGHT AND VARIABLE IN THE
AFTERNOON.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
FRIDAY NIGHT
SKY/WEATHER.........CLEAR (0-5 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...42-52.
NEAR 8000 FEET...36-46.
MAX HUMIDITY........NEAR 5000 FEET...47-57 PERCENT.
NEAR 8000 FEET...62-72 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......LIGHT AND VARIABLE.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (15-25 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...78-88.
NEAR 8000 FEET...65-75.
MIN HUMIDITY........NEAR 5000 FEET...9-19 PERCENT.
NEAR 8000 FEET...13-23 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......LIGHT AND VARIABLE.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........4 ..LOW.
=
UTZ435-437-439>441-161245-
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-
300 PM MDT THU MAY 15 2008
...RED FLAG WARNING IN EFFECT UNTIL 6 PM MDT THIS AFTERNOON FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONE 439
AND 440 BELOW 8000 FEET...
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 3000 FEET...57-63.
NEAR 5000 FEET...42-52.
NEAR 8000 FEET...33-43.
MAX HUMIDITY........NEAR 3000 FEET...34-43 PERCENT.
NEAR 5000 FEET...54-64 PERCENT.
NEAR 8000 FEET...58-68 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH 15-25 MPH IN THE
EVENING BECOMING
DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTH 25-35 MPH DECREASING TO
NORTHEAST 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (0-10 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 3000 FEET...85-91.
NEAR 5000 FEET...71-81.
NEAR 8000 FEET...61-71.
MIN HUMIDITY........NEAR 3000 FEET...9-11 PERCENT.
NEAR 5000 FEET...10-18 PERCENT.
NEAR 8000 FEET...13-23 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......NORTHEAST 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
FRIDAY NIGHT
SKY/WEATHER.........CLEAR (0-5 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 3000 FEET...60-62.
NEAR 5000 FEET...45-55.
NEAR 8000 FEET...36-46.
MAX HUMIDITY........NEAR 3000 FEET...30-37 PERCENT.
NEAR 5000 FEET...44-54 PERCENT.
NEAR 8000 FEET...53-63 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTHWEST 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (15-25 PCT CLOUD COVER). IN
THE MOUNTAINS...ISOLATED THUNDERSTORMS
AFTER 1200.
MAX TEMPERATURE.....NEAR 3000 FEET...93-99.
NEAR 5000 FEET...78-88.
NEAR 8000 FEET...69-79.
MIN HUMIDITY........NEAR 3000 FEET...8-10 PERCENT.
NEAR 5000 FEET...9-15 PERCENT.
NEAR 8000 FEET...10-20 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......LIGHT AND VARIABLE.
LAL.................1 IN THE VALLEYS AND 2 IN THE MOUNTAINS.
CWR.................0 PERCENT.
HAINES INDEX........4 ..LOW.
=
UTZ431-432-445>449-161245-
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 LAS SAL AND ABAJO MOUNTAINS...ZONE
449 SOUTHERN SAN JUAN COUNTY-
300 PM MDT THU MAY 15 2008
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...40-50.
NEAR 8000 FEET...34-44.
MAX HUMIDITY........NEAR 5000 FEET...48-58 PERCENT.
NEAR 8000 FEET...61-71 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...NORTH 10-20 MPH SHIFTING TO
THE NORTHEAST AFTER MIDNIGHT.
RIDGETOPS......NORTH 20-30 MPH SHIFTING TO THE
NORTHEAST 15-25 MPH AFTER
MIDNIGHT.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........2 ..VERY LOW.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...67-77.
NEAR 8000 FEET...57-67.
MIN HUMIDITY........NEAR 5000 FEET...10-17 PERCENT.
NEAR 8000 FEET...17-27 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......NORTH 15-25 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PCT CLOUD COVER).
MIN TEMPERATURE.....NEAR 5000 FEET...43-53.
NEAR 8000 FEET...39-49.
MAX HUMIDITY........NEAR 5000 FEET...47-57 PERCENT.
NEAR 8000 FEET...47-57 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...DOWNSLOPE/DOWNVALLEY 5-10 MPH.
RIDGETOPS......NORTH 10-20 MPH.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........3 ..VERY LOW.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PCT CLOUD COVER).
MAX TEMPERATURE.....NEAR 5000 FEET...75-85.
NEAR 8000 FEET...65-75.
MIN HUMIDITY........NEAR 5000 FEET...7-13 PERCENT.
NEAR 8000 FEET...14-24 PERCENT.
20-FOOT WINDS.......SLOPE/VALLEY...UPSLOPE/UPVALLEY 5-10 MPH.
RIDGETOPS......LIGHT AND VARIABLE.
LAL.................1.
CWR.................0 PERCENT.
HAINES INDEX........4 ..LOW.
=
FORECAST DAYS 3 THROUGH 7
SUNDAY...IN THE VALLEYS...CLEAR...LOWS IN THE LOWER 50S
HIGHS
IN THE UPPER 80S. IN THE MOUNTAINS...MOSTLY CLEAR...LOWS IN THE
LOWER 40S...HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN
15 MPH.
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S IN THE VALLEYS AND
IN THE MID 40S IN THE MOUNTAINS. HIGHS IN THE LOWER 90S IN THE
VALLEYS AND IN THE MID 70S IN THE MOUNTAINS. WINDS GENERALLY LESS
THAN 15 MPH.
TUESDAY
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 50S IN THE VALLEYS AND IN THE UPPER 40S IN THE
MOUNTAINS. HIGHS IN THE UPPER 80S IN THE VALLEYS AND IN THE LOWER
70S IN THE MOUNTAINS. SOUTHWEST WINDS AROUND 15 MPH.
WEDNESDAY...PARTLY CLOUDY. IN THE VALLEYS
ISOLATED SHOWERS AND
THUNDERSTORMS...LOWS IN THE LOWER 50S...HIGHS IN THE UPPER 70S.
IN THE MOUNTAINS...ISOLATED RAIN SHOWERS...SCATTERED SNOW SHOWERS
AND ISOLATED THUNDERSTORMS...LOWS IN THE LOWER 40S...HIGHS IN THE
LOWER 60S.
THURSDAY...PARTLY CLOUDY. IN THE VALLEYS
ISOLATED RAIN
SHOWERS...LOWS IN THE MID 40S...HIGHS IN THE MID 70S. IN THE
MOUNTAINS...ISOLATED RAIN SHOWERS AND SCATTERED SNOW SHOWERS...
LOWS IN THE MID 30S...HIGHS AROUND 60.
.8-14 DAY OUTLOOK FOR FRIDAY MAY 23 TO THURSDAY MAY 29
TEMPERATURE... ABOVE NORMAL
PRECIPITATION... NEAR NORMAL
=
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