Winter Storm Warning 8, NWS Pocatello, ID

000 
WWUS45 KPIH 232157
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
257 PM MST SUN DEC 23 2007

THE PACIFIC STORM SYSTEM MOVING INTO IDAHO THIS EVENING IS
PROGRESSING ABOUT SIX HOURS FASTER. THEREFORE TIMING OF THE EVENT
HAS BEEN ADJUST FASTER. THE STORM SYSTEM WILL PROGRESS ACROSS
SOUTHEAST IDAHO TONIGHT AND MONDAY...MOVING EAST OF THE STATE BY
MONDAY EVENING. THE SYSTEM IS CARRYING ENOUGH MOISTURE TO PRODUCE
MODERATE SNOWFALL IN THE VALLEYS AND HEAVY SNOWFALL IN THE
MOUNTAINS. THE PRESSURE GRADIENT WITH THE SURFACE COLD FRONT WILL
ALSO GENERATE WINDS GUSTS OF 15 TO 30 MPH MAKING FOR AREAS OF
BLOWING AND DRIFTING SNOW. 

RESIDENTS AND TRAVELERS EXPECTING TO DRIVE...FLY...OR PARTICIPATE
IN WINTER OUTDOOR ACTIVITIES ON CHRISTMAS EVE AND CHRISTMAS DAY
SHOULD CLOSELY MONITOR FORECAST DEVELOPMENTS AND BE PREPARED FOR
INCREASED TRAVEL TIMES AND LOCALLY HAZARDOUS CONDITIONS.

IDZ018-031-241130-
/O.EXT.KPIH.WS.W.0008.071224T0000Z-071225T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
257 PM MST SUN DEC 23 2007

...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 PM MST MONDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 PM MST MONDAY. 

A PACIFIC WINTER STORM SYSTEM WILL CROSS THE IDAHO CENTRAL
MOUNTAINS TONIGHT AND MONDAY. SNOW FALL TOTALS OF 4 TO 9 INCHES
IS EXPECTED ABOVE 7000 FEET ELEVATION WITH 3 TO 5 INCHES IN THE
VALLEYS. THE SNOW WILL BE ACCOMPANIED BY BRISK WEST TO NORTHWEST
WINDS GUSTING TO 20 TO 30 MPH...CAUSING CONSIDERABLE BLOWING AND
DRIFTING OF THE SNOW.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ019-023>025-241130-
/O.EXT.KPIH.WS.W.0008.071224T0600Z-071225T0000Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...DOWNEY...LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...
PRESTON...DAYTON...MONTPELIER...GEORGETOWN...PARIS
257 PM MST SUN DEC 23 2007

...WINTER STORM WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO
5 PM MST MONDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT FROM 11 PM THIS EVENING
TO 5 PM MST MONDAY. 

A PACIFIC STORM SYSTEM WILL CROSS THE EASTERN HIGHLANDS OF IDAHO
TONIGHT AND MONDAY. SNOW WILL BEGIN AROUND MIDNIGHT TONIGHT AND
CONTINUE UNTIL MONDAY EVENING. SNOWFALL TOTALS OF 4 TO 9 INCHES IN
THE MOUNTAINS AND 3 TO 5 INCHES IN THE VALLEYS ARE POSSIBLE WITH
THIS STORM. THE SNOW WILL BE ACCOMPANIED BY BRISK WEST TO
SOUTHWEST WINDS GUSTING TO 20 TO 25 MPH...CAUSING CONSIDERABLE
BLOWING AND DRIFTING OF THE SNOW.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ017-020>022-032-241130-
/O.EXT.KPIH.SB.Y.0004.071224T0600Z-071225T0000Z/
EASTERN MAGIC VALLEY-UPPER SNAKE RIVER PLAIN-
LOWER SNAKE RIVER PLAIN-SOUTH CENTRAL HIGHLANDS-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
IDAHO FALLS...REXBURG...RIGBY...POCATELLO...BLACKFOOT...
AMERICAN FALLS...MALAD CITY...OAKLEY...ROCKLAND...ARCO...
CHALLIS...MACKAY
257 PM MST SUN DEC 23 2007

...SNOW AND BLOWING SNOW ADVISORY NOW IN EFFECT FROM 11 PM THIS
EVENING TO 5 PM MST MONDAY...

THE SNOW AND BLOWING SNOW ADVISORY IS NOW IN EFFECT FROM 11 PM
THIS EVENING TO 5 PM MST MONDAY. 

A PACIFIC WINTER STORM SYSTEM IS FORECAST TO MOVE INTO THE SNAKE
RIVER AND MAGIC VALLEYS TONIGHT AND SOUTH CENTRAL HIGHLANDS ON
MONDAY. SNOW WILL BEGIN NEAR MIDNIGHT TONIGHT AND GRADUALLY
SPREAD SOUTHWARD DURING THE MORNING...AND COME TO END IN ALL AREAS
BY MONDAY EVENING. SNOWFALL TOTALS OF 2 TO 4 INCHES ARE EXPECTED ACROSS
THE VALLEYS. BRISK WESTERLY WINDS GUSTING TO 20 TO 30 MPH WILL
CAUSE CONSIDERABLE BLOWING AND DRIFTING OF THE SNOW.

A SNOW AND BLOWING SNOW ADVISORY MEANS THE COMBINATION OF GUSTY
WINDS AND SNOWFALL WILL LEAD TO HAZARDOUS TRAVELING CONDITIONS IN
NEAR WHITEOUT CONDITIONS AT TIMES.

$$

000 
WWUS45 KPIH 241034
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
334 AM MST MON DEC 24 2007

THE EXPECTED PACIFIC STORM SYSTEM HAS ENTERED CENTRAL AND EASTERN
IDAHO THIS MORNING AND WILL MOVE ACROSS THE STATE TODAY. WARM AIR
AHEAD OF THE UPPER LEVEL TROUGH AND SURFACE COLD FRONT WILL CREATE
AREAS OF LIGHT FREEZING DRIZZLE THROUGH THE EASTERN MAGIC VALLEY
AND MIDDLE SNAKE RIVER PLAIN THIS MORNING BEFORE CHANGING TO SNOW
THIS AFTERNOON. WINDS GUSTING TO 20 TO 30 MPH ARE EXPECTED TO
DEVELOP THIS AFTERNOON AS THE COLD FRONT PUSHED THROUGH THE REGION
CREATING BROAD AREAS OF BLOWING AND DRIFTING OF SNOW.

THE MIX OF FREEZING DRIZZLE...MODERATE SNOW...AND GUSTY WINDS WILL
MAKE TRAVEL AND OUTDOOR RECREATION QUITE HAZARDOUS...ESPECIALLY
THIS AFTERNOON. RESIDENTS AND TRAVELERS SHOULD USE A HIGH LEVEL OF
CAUTION IF TRAVELING TODAY AND INTO CHRISTMAS MORNING AND CONTINUE
TO MONITOR FORECAST AND ROAD CONDITIONS FOR THE LATEST INFORMATION.

IDZ017-022-242245-
/O.CAN.KPIH.SB.Y.0004.000000T0000Z-071225T0000Z/
/O.NEW.KPIH.WW.Y.0001.071224T1034Z-071225T0000Z/
EASTERN MAGIC VALLEY-SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
MALAD CITY...OAKLEY...ROCKLAND
334 AM MST MON DEC 24 2007

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
...SNOW AND BLOWING SNOW ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. THE SNOW AND BLOWING SNOW ADVISORY HAS BEEN CANCELLED.

THE EXPECTED WINTER STORM SYSTEM IS ALREADY PRODUCING A MIX OF
SNOW AND FREEZING DRIZZLE IN THE EASTERN MAGIC VALLEY AND SOUTH
CENTRAL HIGHLANDS AND WILL CONTINUE TO DO SO UNTIL MIDDAY. A
COLD FRONT WILL PUSH ACROSS THE AREA ABOUT MIDDAY AND CHANGE THE
PRECIPITATION TO ALL SNOW. THE SNOW WILL CONTINUE THROUGH EARLY
MONDAY EVENING...WITH SNOW TOTALS OF 2 TO 4 INCHES. IN ADDITION...BRISK
WEST TO SOUTHWEST WINDS WITH GUSTS OF 20 TO 30 MPH WILL CAUSE
CONSIDERABLE BLOWING AND DRIFTING OF SNOW.

A WINTER WEATHER ADVISORY MEANS THAT ACCUMULATIONS OF SNOW...
ICE...OR SLEET AND GUSTY WINDS CAUSING REDUCED VISIBILITIES DUE TO
BLOWING SNOW ARE EXPECTED TO CREATE HAZARDOUS TRAVEL CONDITIONS FOR
TRAVELERS AND RESIDENTS WITHIN THE ADVISORY AREA.

$$

IDZ018-031-242245-
/O.CON.KPIH.WS.W.0008.000000T0000Z-071225T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
334 AM MST MON DEC 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

THE EXPECTED WINTER STORM SYSTEM SNOW HAS REACHED THE CENTRAL
MOUNTAIN THIS MORNING AND WILL CONTINUE TO IMPACT THE AREA TODAY. SNOWFALL
TOTALS OF 4 TO 9 INCHES IS EXPECTED ABOVE 7000 FEET ELEVATION WITH
2 TO 4 INCHES IN THE VALLEYS. THE SNOW WILL BE ACCOMPANIED BY BRISK
WEST TO NORTHWEST WINDS GUSTING TO 20 TO 30 MPH...CAUSING
CONSIDERABLE BLOWING AND DRIFTING OF THE SNOW. THE SYSTEM WILL
DISSIPATE LATE THIS AFTERNOON WITH A FEW LIGHT SNOWSHOWERS
POSSIBLE INTO THE EVENING HOURS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ019-023>025-242245-
/O.CON.KPIH.WS.W.0008.000000T0000Z-071225T0000Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...DOWNEY...LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...
PRESTON...DAYTON...MONTPELIER...GEORGETOWN...PARIS
334 AM MST MON DEC 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

THE EXPECTED WINTER STORM SYSTEM HAS MOVED INTO THE AREA THIS
MORNING AND WILL CONTINUE TO MOVE THROUGH EASTERN IDAHO TODAY.
STEADY LIGHT TO MODERATE SNOW SHOULD BEGIN LATE THIS MORNING AND
CONTINUE INTO THE EVENING HOURS.  SNOWFALL TOTALS OF 4 TO 9 INCHES
IN THE MOUNTAINS AND 3 TO 5 INCHES IN THE VALLEYS ARE POSSIBLE
WITH THIS STORM. THE SNOW WILL BE ACCOMPANIED BY BRISK WEST TO
SOUTHWEST WINDS GUSTING TO 20 TO 25 MPH...CAUSING CONSIDERABLE
BLOWING AND DRIFTING OF THE SNOW.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ020-021-032-242245-
/O.EXT.KPIH.SB.Y.0004.000000T0000Z-071225T0000Z/
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...ARCO...CHALLIS...MACKAY
334 AM MST MON DEC 24 2007

...SNOW AND BLOWING SNOW ADVISORY NOW IN EFFECT UNTIL 5 PM MST
THIS AFTERNOON...

THE SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON.

THE EXPECTED WINTER STORM SYSTEM HAS REACHED CENTRAL AND PORTIONS
OF EASTERN IDAHO THIS MORNING AND WILL CONTINUE TO PUSH ACROSS THE
REGION TODAY. SNOW SHOULD BECOME CONTINUOUS BY LATE MORNING AND
CONTINUE INTO THE LATE AFTERNOON HOURS.  SNOWFALL TOTALS OF 2 TO 4
INCHES ARE EXPECTED ACROSS THE VALLEYS. BRISK WESTERLY WINDS
GUSTING TO 20 TO 30 MPH WILL CAUSE CONSIDERABLE BLOWING AND
DRIFTING OF THE SNOW.

A SNOW AND BLOWING SNOW ADVISORY MEANS THE COMBINATION OF GUSTY
WINDS AND SNOWFALL WILL LEAD TO HAZARDOUS TRAVELING CONDITIONS IN
NEAR WHITEOUT CONDITIONS AT TIMES.

$$

000 
WWUS45 KPIH 241755
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
1055 AM MST MON DEC 24 2007

A SURFACE COLD FRONT ASSOCIATED WITH A PACIFIC STORM SYSTEM WILL
CROSS THE UPPER SNAKE RIVER VALLEY BY 1100 AM MST. TEMPERATURES
WILL COOL ABOUT 10 DEGREES AS THE FRONT PASSES..ESPECIALLY IN
SOUTHERN PORTIONS OF THE STATE WHERE TEMPERATURES JUMPED TO AROUND
40 DEGREES THIS MORNING. THE FRONTAL BAND IS EXPECTED TO STALL
ACROSS THE UPPER SNAKE PLAIN BETWEEN BLACKFOOT AND IDAHO FALLS THIS
AFTERNOON AND SNOW MAY FOCUS IN THE AT AREA FOR A FEW HOURS AND
ACCUMULATE 2 TO 4 INCHES. SOUTHWEST WINDS GUSTING TO 25 TO 35 MPH
WILL CAUSE BROAD AREAS OF BLOWING AND DRIFTING SNOW. IN THE
CENTRAL MOUNTAINS...SNOW WILL GRADUALLY DIMINISH TO SCATTERED
SHOWERS THIS AFTERNOON. 

TRAVEL AND OUTDOOR RECREATION WILL BE HAZARDOUS QUITE HAZARDOUS...
ESPECIALLY THIS AFTERNOON. RESIDENTS AND TRAVELERS SHOULD USE A
HIGH LEVEL OF CAUTION IF TRAVELING TODAY AND INTO CHRISTMAS
MORNING AND CONTINUE TO MONITOR FORECAST AND ROAD CONDITIONS FOR
THE LATEST INFORMATION.

IDZ018-031-250000-
/O.CON.KPIH.WS.W.0008.000000T0000Z-071225T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
1055 AM MST MON DEC 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

THE EXPECTED WINTER STORM SYSTEM SNOW HAS REACHED THE CENTRAL
MOUNTAIN THIS MORNING AND WILL CONTINUE TO IMPACT THE AREA TODAY.
SNOWFALL TOTALS OF 4 TO 9 INCHES IS EXPECTED ABOVE 7000 FEET
ELEVATION WITH 2 TO 4 INCHES IN THE VALLEYS. THE SNOW WILL BE
ACCOMPANIED BY BRISK WEST TO NORTHWEST WINDS GUSTING TO 20 TO
30 MPH...CAUSING CONSIDERABLE BLOWING AND DRIFTING OF THE SNOW.
THE SYSTEM WILL DISSIPATE LATE THIS AFTERNOON WITH A FEW LIGHT
SNOW SHOWERS POSSIBLE INTO THE EVENING HOURS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ019-023>025-250000-
/O.CON.KPIH.WS.W.0008.000000T0000Z-071225T0000Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...DOWNEY...LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...
PRESTON...DAYTON...MONTPELIER...GEORGETOWN...PARIS
1055 AM MST MON DEC 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

THE EXPECTED WINTER STORM SYSTEM HAS MOVED INTO THE AREA THIS
MORNING AND WILL CONTINUE TO MOVE THROUGH EASTERN IDAHO TODAY.
STEADY LIGHT TO MODERATE SNOW SHOULD BEGIN LATE THIS MORNING AND
CONTINUE INTO THE EVENING HOURS.  SNOWFALL TOTALS OF 4 TO
9 INCHES IN THE MOUNTAINS AND 3 TO 5 INCHES IN THE VALLEYS ARE
POSSIBLE WITH THIS STORM. THE SNOW WILL BE ACCOMPANIED BY BRISK
WEST TO SOUTHWEST WINDS GUSTING TO 20 TO 25 MPH...CAUSING
CONSIDERABLE BLOWING AND DRIFTING OF THE SNOW.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ020-021-032-250000-
/O.CON.KPIH.SB.Y.0004.000000T0000Z-071225T0000Z/
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...ARCO...CHALLIS...MACKAY
1055 AM MST MON DEC 24 2007

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM
MST THIS AFTERNOON...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
THIS AFTERNOON. 

THE SURFACE COLD FRONT ASSOCIATED WITH A PACIFIC STORM SYSTEM WILL
CROSS THE UPPER SNAKE RIVER VALLEY BY 1100 AM MST. TEMPERATURES
WILL COOL ABOUT 10 DEGREES AS THE FRONT PASSES..ESPECIALLY IN
SOUTHERN PORTIONS OF THE STATE WHERE TEMPERATURES JUMPED TO AROUND
40 DEGREES THIS MORNING. THE FRONTAL BAND IS EXPECTED TO STALL
ACROSS THE UPPER SNAKE PLAIN BETWEEN BLACKFOOT AND IDAHO FALLS THIS
AFTERNOON AND SNOW MAY FOCUS IN THE AT AREA FOR A FEW HOURS AND
ACCUMULATE 2 TO 4 INCHES. SOUTHWEST WINDS GUSTING TO 25 TO 35 MPH
WILL CAUSE BROAD AREAS OF BLOWING AND DRIFTING SNOW. 

A SNOW AND BLOWING SNOW ADVISORY MEANS THE COMBINATION OF GUSTY
WINDS AND SNOWFALL WILL LEAD TO HAZARDOUS TRAVELING CONDITIONS IN
NEAR WHITEOUT CONDITIONS AT TIMES.

$$

IDZ017-022-250000-
/O.CON.KPIH.WW.Y.0001.000000T0000Z-071225T0000Z/
EASTERN MAGIC VALLEY-SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
MALAD CITY...OAKLEY...ROCKLAND
1055 AM MST MON DEC 24 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. 

THE EXPECTED WINTER STORM SYSTEM IS ALREADY PRODUCING A MIX OF
SNOW AND FREEZING DRIZZLE IN THE EASTERN MAGIC VALLEY AND SOUTH
CENTRAL HIGHLANDS AND WILL CONTINUE TO DO SO UNTIL MIDDAY. A COLD
FRONT WILL PUSH ACROSS THE AREA ABOUT MIDDAY AND CHANGE THE
PRECIPITATION TO ALL SNOW. THE SNOW WILL CONTINUE THROUGH EARLY
MONDAY EVENING...WITH SNOW TOTALS OF 2 TO 4 INCHES. IN ADDITION...
BRISK WEST TO SOUTHWEST WINDS WITH GUSTS OF 20 TO 30 MPH WILL
CAUSE CONSIDERABLE BLOWING AND DRIFTING OF SNOW.

A WINTER WEATHER ADVISORY MEANS THAT ACCUMULATIONS OF SNOW...
ICE...OR SLEET AND GUSTY WINDS CAUSING REDUCED VISIBILITIES DUE
TO BLOWING SNOW ARE EXPECTED TO CREATE HAZARDOUS TRAVEL
CONDITIONS FOR TRAVELERS AND RESIDENTS WITHIN THE ADVISORY AREA.

$$

000 
WWUS45 KPIH 242357
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
457 PM MST MON DEC 24 2007


IDZ018-031-250100-
/O.EXP.KPIH.WS.W.0008.000000T0000Z-071225T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
457 PM MST MON DEC 24 2007

...WINTER STORM WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

HEAVY SNOW THAT OCCURRED WITH A STRONG PACIFIC STORM SYSTEM HAS
PUSHED EAST OF THE REGION. SOME BLOWING AND DRIFTING OF SNOW
REMAINS POSSIBLE AT PASSES OR IN EXPOSED NORTHWEST ORIENTED
VALLEYS. A FEW LIGHT SNOW SHOWERS REMAIN POSSIBLE OVERNIGHT...BUT
THE THREAT OF SIGNIFICANT PRECIPITATION HAS ENDED. THEREFORE THE
WINTER STORM WARNING WILL EXPIRE AT 5 PM MST.

$$

IDZ032-250100-
/O.EXP.KPIH.SB.Y.0004.000000T0000Z-071225T0000Z/
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...ARCO...CHALLIS...MACKAY
457 PM MST MON DEC 24 2007

...SNOW AND BLOWING SNOW ADVISORY WILL EXPIRE AT 5 PM MST THIS
AFTERNOON...

HEAVY SNOW THAT OCCURRED WITH A STRONG PACIFIC STORM SYSTEM HAS
PUSHED EAST OF THE REGION. SOME BLOWING AND DRIFTING OF SNOW
REMAINS POSSIBLE AT PASSES AND IN THE LOST RIVER VALLEY. A FEW
LIGHT SHOWERS REMAIN POSSIBLE OVERNIGHT...BUT THE THREAT OF
SIGNIFICANT PRECIPITATION HAS ENDED. THEREFORE THE SNOW AND
BLOWING SNOW ADVISORY WILL EXPIRE AT 5 PM MST.

$$

IDZ017-022-250100-
/O.EXP.KPIH.WW.Y.0001.000000T0000Z-071225T0000Z/
EASTERN MAGIC VALLEY-SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
MALAD CITY...OAKLEY...ROCKLAND
457 PM MST MON DEC 24 2007

...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 PM MST THIS
AFTERNOON...

THE MIXED BAG OF PRECIPITATION ASSOCIATED WITH A STRONG PACIFIC
STORM SYSTEM HAS PUSHED EAST OF THE REGION. STRONG GUSTY WINDS
AND A FEW LIGHT SNOW SHOWERS WILL REMAIN POSSIBLE THROUGH THE
EARLY PART OF THE EVENING. BUT THE THREAT OF SIGNIFICANT SNOWFALL
HAS ENDED...THEREFORE THE WINTER WEATHER ADVISORY WILL EXPIRE AT 5
PM MST.

$$

IDZ019-023>025-250300-
/O.EXT.KPIH.WS.W.0008.000000T0000Z-071225T0300Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...DOWNEY...LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...
PRESTON...DAYTON...MONTPELIER...GEORGETOWN...PARIS
457 PM MST MON DEC 24 2007

...WINTER STORM WARNING NOW IN EFFECT UNTIL 8 PM MST THIS
EVENING...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 8 PM MST THIS
EVENING. 

SECONDARY BANDS OF LOCALLY HEAVY SNOWFALL HAVE DEVELOPED BEHIND
THE MAIN COLD FRONT ASSOCIATED WITH A STRONG PACIFIC STORM SYSTEM.
THESE BANDS WILL CONTINUE TO AFFECT THE HIGHLANDS ALONG THE IDAHO
WYOMING BORDER THROUGH MOST OF THE EVENING. ADDITIONAL SNOWFALL OF
2 TO 3 INCHES ARE POSSIBLE WITH THESE BANDS. IN ADDITION...GUSTY
WINDS MAY PRODUCE AREAS OF BLOWING AND DRIFTING SNOW...REDUCING
VISIBILITIES BELOW ONE HALF MILE AT TIMES.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

$$

IDZ020-021-250300-
/O.EXT.KPIH.SB.Y.0004.000000T0000Z-071225T0300Z/
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY...
POCATELLO...BLACKFOOT...AMERICAN FALLS
457 PM MST MON DEC 24 2007

...SNOW AND BLOWING SNOW ADVISORY NOW IN EFFECT UNTIL 8 PM MST
THIS EVENING...

SECONDARY BANDS OF LOCALLY HEAVY SNOWFALL HAVE DEVELOPED BEHIND
THE MAIN COLD FRONT ASSOCIATED WITH A STRONG PACIFIC STORM SYSTEM.
THESE BANDS WILL CONTINUE TO AFFECT THE HIGHLANDS ALONG THE IDAHO
WYOMING BORDER THROUGH MOST OF THE EVENING. ADDITIONAL SNOWFALL OF
1 TO 3 INCHES ARE POSSIBLE WITH THESE BANDS. IN ADDITION...GUSTY
WINDS MAY PRODUCE AREAS OF BLOWING AND DRIFTING SNOW...REDUCING
VISIBILITIES BELOW ONE HALF MILE AT TIMES.

A SNOW AND BLOWING SNOW ADVISORY MEANS THE COMBINATION OF GUSTY
WINDS AND SNOWFALL WILL LEAD TO HAZARDOUS TRAVELING CONDITIONS IN
NEAR WHITEOUT CONDITIONS AT TIMES.

$$

000 
WWUS45 KPIH 250251
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
751 PM MST MON DEC 24 2007


IDZ019-023>025-250400-
/O.EXP.KPIH.WS.W.0008.000000T0000Z-071225T0300Z/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...DOWNEY...LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...
PRESTON...DAYTON...MONTPELIER...GEORGETOWN...PARIS
751 PM MST MON DEC 24 2007

...WINTER STORM WARNING WILL EXPIRE AT 8 PM MST THIS EVENING...

HEAVY SNOW ASSOCIATED WITH A STRONG PACIFIC STORM SYSTEM HAS
PUSHED EAST INTO WYOMING. IN ADDITION...WINDS HAVE BEGUN TO
SUBSIDE ACROSS THE REGION. THEREFORE THE WINTER STORM WARNING WILL
EXPIRE AT 8 PM MST.

$$

IDZ020-021-250400-
/O.EXP.KPIH.SB.Y.0004.000000T0000Z-071225T0300Z/
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY...
POCATELLO...BLACKFOOT...AMERICAN FALLS
751 PM MST MON DEC 24 2007

...SNOW AND BLOWING SNOW ADVISORY WILL EXPIRE AT 8 PM MST THIS
EVENING...

BOTH WINDS AND SNOW HAVE BEGUN TO SUBSIDE ACROSS THE SNAKE RIVER
VALLEY THIS EVENING. A FEW SNOW SHOWERS WILL LINGER ACROSS THE
SOUTHERN EDGE OF THE VALLEY NEAR POCATELLO...BUT SIGNIFICANT
ACCUMULATIONS ARE NO LONGER EXPECTED. BREEZY WEST OR NORTHWEST
WINDS WILL CONTINUE TO SUBSIDE THROUGH THE REMAINDER OF THE
EVENING...ENDING THE THREAT OF BLOWING SNOW. THEREFORE THE SNOW
AND BLOWING SNOW ADVISORY WILL EXPIRE AT 8 PM MST.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
808 PM MST SAT DEC 22 2007

.UPDATE...NO CHANGES TO GOING FORECAST TONIGHT. RADAR MOSAIC AND
SFC OBS SHOWS PRECIP SHIELD GRADUALLY MAKING PROGRESS EAST. EXPECT
MOST OF THE REGION TO SEE SNOW AFTER MIDNIGHT. SHOULD PICK UP A
QUICK INCH OR TWO IN THE VALLEYS TONIGHT AND EARLY TOMORROW. NEW
00Z NAM SHOVES PRECIP OUT OF THE REGION BY AFTERNOON...WITH NEXT
WAVE ALREADY HITTING COAST. THIS THE WAVE OF CONCERN THROUGH SHORT
TERM WITH HEADLINES ALREADY HOISTED FOR HEAVY CHRISTMAS EVE TRAVEL
DAY. CENTER OF NEXT WAVE TIGHTLY WOUND PER WV AIMGERY WITH
IMPRESSIVE HIGH PW MOISTURE FETCH POINTED AT WEST COAST. 00Z NAM
SHOWS PW VALUES .5-.75 WIDESPREAD FOR MONDAY WITH RUNNING QPF
VALUES AROUND .5 INCH. TREND OF EARLIER RUNS CONTINUES WITH BRIEF
WEDGE OF ABOVE FREEZING 850MB WET BULB TEMPS...INDICATING BRIEF
PERIOD OF MIX. SFC GRADIENT STILL QUITE TIGHT BEHIND FRONT WITH
40KT 700MB WINDS AND 25KT BLAYER WINDS. GIVEN NEW NAM
INFO...EXPECT NO SIGNIFICANT CHANGES TO GOING FORECASTS AND
THEREFORE WILL LEAVE WINTER STORM WATCH IN PLACE. DMH

&&

.PREV DISCUSSION... /ISSUED 228 PM MST SAT DEC 22 2007/

SHORT TERM...TONIGHT...QUICK MOVING DISTURBANCE APPROACHING THE
WEST SIDE OF STATE THIS AFTERNOON. SNOW SHOWERS SHOULD SPREAD INTO
THE CENTRAL MOUNTAINS EARLY THIS EVENING AND THE UPPER SNAKE RIVER
VALLEY AFTER MIDNIGHT. AROUND ONE INCH SNOW EXPECTED IN THE
VALLEYS...LOCALLY TWO INCHES ON BENCH AREAS...MOSTLY AFTER
MIDNIGHT FOR KPIH AND KIDA AREAS. BY SUNDAY MORNING SNOW WILL
LINGER OVER THE CARIBOU HIGHLANDS AND DIMINISH STEADILY THROUGH
AFTERNOON. THE 12Z NAM MODEL RUN CONTINUES TO SUPPORT KEEPING THE
WINTER STORM WATCH IN EFFECT FOR SOUTHEAST IDAHO ESPECIALLY WITH
HIGH SNOW TO WATER RATIOS....HOWEVER THE NAM12 HAS WARMED THE
AIRMASS BY MONDAY MORNING AS THE WARM FRONTAL BOUNDARY LIFTS
NORTHEAST. WET BULB ZERO REAL CLOSE TO 32F IN THE KBYI AREA.
TEMPERATURES FALL AS COLD FRONT COMES THROUGH. MOS GUIDANCE
INDICATES 21KTS WINDS AT KBYI MONDAY AFTERNOON...RESPECTABLE FOR
BLOWING AND DRIFTING OF SNOW. GFS IS QUITE A BIT HIGHER WITH QPF
THAN THIS TIME YESTERDAY. GFS SO FAR DOES NOT SHOW SIGNS OF
DIGGING THE SYSTEM FURTHER SOUTH. AS LONG AS IT HOLDS TRACK...THE
LEFT FRONT QUAD DYNAMICS OF JET SHOULD BE FAVORABLE ON MONDAY.
WITH WARM ADVECTION MONDAY MORNING HAVE ADJUSTED TEMPERATURES UP A
FEW DEGREES. RS

LONG TERM...TUESDAY THROUGH SATURDAY. AN ACTIVE EXTENDED PERIOD IS
IN STORE WITH STORM SYSTEMS EXPECTED TO IMPACT EASTERN IDAHO NEARLY
EVERY 48 HOURS. THERE IS PLENTY OF VARIABILITY ON HOW THE MAJOR
MODELS ARE HANDLING INDIVIDUAL DISTURBANCES...HOWEVER THEY DO AGREE
THAT AN ACTIVE PATTERN WILL CONTINUE. FOR NOW IT LOOKS AS IF STORMS
MAY MOVE THROUGH WEDNESDAY...FRIDAY...AND LATE SATURDAY.

CANTIN

AVIATION...MVFR CONDITIONS IN STRATUS ARE LINGERING OVER THE UPPER
SNAKE PLAIN...INCLUDING KIDA. ELSEWHERE VFR CONDITIONS ARE WELL
ESTABLISHED.  MID AND HIGH LEVEL CLOUDINESS WILL BE ON THE INCREASE
THIS AFTERNOON/EVENING AS A DISTURBANCES APPROACHES THE AREA.
MVFR/IFR CONDITIONS IN LOW CEILINGS AND REDUCED VISIBILITY ARE
EXPECTED OVERNIGHT...MAINLY AFTER 06Z AS THE SYSTEM PUSHES THROUGH
EASTERN IDAHO.

CANTIN

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM LATE SUNDAY NIGHT THROUGH MONDAY EVENING
FOR IDZ017>025-031-032.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
518 AM MST SAT DEC 22 2007

IDZ017>025-031-032-231230-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
518 AM MST SAT DEC 22 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. CLOUDS
WILL INCREASE TODAY IN ADVANCE OF A PACIFIC STORM SYSTEM. LIGHT
SNOW IS EXPECTED TO DEVELOP OVER THE MOUNTAINS TONIGHT AND MOVE
INTO THE LOWER ELEVATIONS BY SUNDAY MORNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A POTENT PACIFIC STORM SYSTEM IS SLATED TO IMPACT CENTRAL AND SOUTHEAST
IDAHO BEGINNING SUNDAY NIGHT AND LASTING INTO EARLY TUESDAY.
ACCUMULATING SNOWFALL IS EXPECTED ACROSS THE AREA INCLUDING LOWER ELEVATIONS.
PLEASE REFER TO BOIWSWPIH FOR MORE INFORMATION.

SNOW IS ALSO FORECAST FOR THE REGION WEDNESDAY AND AGAIN FRIDAY
AS WE REMAIN IN AN ACTIVE WINTER WEATHER PATTERN.

.SPOTTER INFORMATION STATEMENT...

WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT
WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY
INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL...
EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE
FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS
CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE
OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR
208-233-0834.