High Wind Watch 1, NWS Salt Lake City, UT

000 
WWUS75 KSLC 042039
NPWSLC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
139 PM MST THU JAN 4 2007

.STRONG NORTHERLY WINDS ALOFT WILL COMBINE WITH A TIGHT SURFACE
GRADIENT BEHIND A COLD FRONT ACROSS EXTREME SOUTHWEST UTAH
AFTER MIDNIGHT TONIGHT THROUGH FRIDAY.

UTZ019-050600-
/O.UPG.KSLC.HW.A.0001.070105T0700Z-070106T0300Z/
/O.NEW.KSLC.HW.W.0001.070105T0700Z-070106T0300Z/
UTAHS DIXIE AND ZION NATIONAL PARK-
139 PM MST THU JAN 4 2007

...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 PM MST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A HIGH
WIND WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 PM
MST FRIDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

THIS WARNING IS FOR THE CANYONS AND GAPS OF UTAHS DIXIE.
THIS INCLUDES WASHINGTON COUNTY.

A COLD FRONT WILL MOVE THROUGH SOUTHWEST UTAH AFTER MIDNIGHT
AND STRONG NORTHERLY WINDS WILL DEVELOP BEHIND IT.

NORTH WINDS WILL BLOW AT SPEEDS OF 20 TO 40 MPH WITH
GUSTS TO 60 MPH POSSIBLE ALONG THE I-15 CORRIDOR. THE
STRONGEST WINDS WILL OCCUR AFTER MIDNIGHT AND THROUGH
FRIDAY MORNING IN THE GAPS AND CANYONS OF SOUTHWEST UTAH.

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE.

$$

TARDY

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1015 PM MST WED JAN 3 2007

UPDATED AVIATION DISCUSSION

.SYNOPSIS...A MILD AND INCREASINGLY MOIST WESTERLY FLOW IS OVER THE
GREAT BASIN TONIGHT AHEAD OF A PACIFIC COLD FRONT. THE FRONT WILL
CROSS THE AREA THURSDAY AFTERNOON THROUGH EARLY FRIDAY. HIGH
PRESSURE WILL RETURN LATE FRIDAY THROUGH SATURDAY.

&&

.DISCUSSION...FORECAST IN GOOD SHAPE AND NO MID-EVENING UPDATE
PLANNED. SHORTWAVE PASSED THIS EVENING AND IS NOW CROSSING THE
CONTINENTAL DIVIDE. JET STREAM LIFTED NORTH OF UTAH THIS AFTERNOON
IN WAKE OF THE SHORTWAVE AND NOW LIES ACROSS SOUTHERN OREGON AND
SOUTHERN IDAHO. INCOMING TROUGH WILL PUSH THE JET BACK SOUTH ACROSS
UTAH THURSDAY...OVER KSLC AT 21Z AND KCDC AT 03Z. PRECIPITATION WILL
INCREASE WITH AND NORTH OF THE JET STREAM IN LOW STATIC STABILITY
AIRMASS. THIS TROUGH IS NOT SPLITTING AND IS MORE PROGRESSIVE THAN
RECENT DEVELOPMENTAL SYSTEMS. HOWEVER...THE SYSTEM WILL MOVE QUICKLY
ACROSS THE FORECAST AREA...LIMITING TOTAL SNOWFALL MOSTLY TO
ADVISORY LEVELS. INCOMING AIRMASS IS COLD...DOWN TO -16C AT 700 MB
NEARLY STATEWIDE BY FRIDAY MORNING AND COLDER THAN -30 AT 500 MB AT
THE SAME TIME. THIS SHOULD LEAD TO LAKE ENHANCEMENT FRIDAY MORNING
WITH A NORTH WIND ACROSS THE LAKE...FAVORING THE WESTERN SALT LAKE
VALLEY AND TOOELE VALLEY...FOR ANY BANDS THAT DEVELOP. MID SHIFT
WILL NEED TO CONSIDER SNOW ADVISORIES FOR THE VALLEY AREAS IN
ADDITION TO MOUNTAIN HIGHLIGHTS ALREADY OUT. COULD BE A DIFFICULT
COMMUTE FOR THE WASATCH FRONT THURSDAY EVENING.

&&

.AVIATION...LOCAL SURFACE WINDS WILL BE AFFECTED BY PASSING
VIRGA/SHOWERS TO THE NORTH OF THE FIELD THROUGH ABOUT 07Z. WINDS
JUST ABOVE THE SURFACE WILL REMAIN SOUTHERLY...BUT LIGHT NORTH OR
NORTHWEST AT THE SURFACE WILL CONTINUE LOCALLY. EXPECT A RETURN TO
SOUTHERLY WINDS AFTER ABOUT 08Z. CEILINGS EXPECTED TO REMAIN ABOVE
7000FT THROUGH THE EVENING PUSH...AND ON TO ABOUT 15Z THURSDAY. NO
OTHER AVIATION CONCERNS OVERNIGHT. LOWERING CEILINGS WITH SNOW
DEVELOPING THURSDAY AFTERNOON AS INDICATED IN THE TAFSLC.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...

UT...WINTER STORM WARNING TONIGHT UNTIL 8PM THU NRN WASATCH MTS.
      UTZ007.
  ...SNOW ADVISORY TONIGHT UNTIL 8PM THU SRN WASATCH AND WRN UINTA
      MTS. UTZ008-009.

WY...SNOW AND BLOWING SNOW ADVISORY TONIGHT UNTIL 8PM THU. WYZ021.

&&

GIBSON

AVIATION...SMITH

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
337 PM MST WED JAN 3 2007

UTZ001>009-WYZ021-041400-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-SOUTHWEST WYOMING-
337 PM MST WED JAN 3 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN UTAH
AND SOUTHWEST WYOMING.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A PACIFIC COLD FRONT IS HEADED TOWARD NORTHERN UTAH AND SOUTHWEST
WYOMING. SNOW AND RAIN WILL INCREASE ACROSS THE OUTLOOK AREA LATE
TONIGHT. STRONG RIDGETOP WINDS AND MOUNTAIN SNOW WILL BEGIN AFTER
MIDNIGHT. VARIOUS WINTER WEATHER WARNING AND ADVISORIES HAVE BEEN
ISSUED. SEE THE LATEST WINTER WEATHER PRODUCTS FOR DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

RAIN AND MOUNTAIN SNOW WILL CONTINUE ACROSS THE OUTLOOK AREA
THURSDAY. MUCH COLDER AIR WILL THEN ARRIVE AS THE FRONT MOVES
THROUGH THE REGION THURSDAY EVENING. A PERIOD OF SNOW WILL RESULT
BEFORE THE PRECIPITATION ENDS IN MOST AREAS BY EARLY FRIDAY
MORNING.

FRIDAY WILL BE 10 TO 20 DEGREES COLDER THAN THURSDAY WITH A COLD
MORNING EXPECTED SATURDAY MORNING UNDER CLEARING SKIES WITH FRESH
SNOW COVER.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

UTZ010>021-041400-
WASATCH PLATEAU/BOOK CLIFFS-WESTERN UINTA BASIN-CASTLE COUNTRY-
SAN RAFAEL SWELL-SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-
SOUTHWEST UTAH-CENTRAL AND SOUTHWEST MOUNTAINS-HENRY MOUNTAINS-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-
337 PM MST WED JAN 3 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN UTAH.

.DAY ONE...THIS AFTERNOON AND TONIGHT

HIGH CLOUDS WILL INCREASE ACROSS THE OUTLOOK AREA TONIGHT AS A
PACIFIC COLD FRONT APPROACHES UTAH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SOUTHWEST WINDS WILL INCREASE THURSDAY AS THE FRONT APPROACHES.
THE WINDS WILL SHIFT TO NORTHERLY LATE FRIDAY NIGHT WITH MUCH
COLDER AIR ARRIVING OVER SOUTHERN AND EASTERN UTAH. A PERIOD OF
MOUNTAIN SNOW AND LOWER ELEVATION RAIN WILL OCCUR LATE FRIDAY
NIGHT AS THE STORM PUSHES ACROSS THE AREA. FOLLOWING THE COLD
FRONT...STRONG AND GUSTY NORTH WINDS WILL DEVELOP EARLY FRIDAY
THEN CONTINUE THROUGH FRIDAY NIGHT. THE STRONGEST WINDS WILL BE
OVER UTAHS DIXIE AND SURROUNDING MOUNTAINS...MAINLY WITHIN
WASHINGTON COUNTY. THE WINDS WILL DIMINISH SATURDAY MORNING WITH A
SLOW WARMING TREND THROUGH THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

GIBSON

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)