Winter Storm Warning 13, NWS Pocatello, ID

000 
WWUS45 KPIH 242134
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
234 PM MST WED DEC 24 2008

...STRONG PACIFIC STORM SYSTEM TO AFFECT SOUTHEAST IDAHO
CHRISTMAS EVE AND CHRISTMAS DAY...

.ANOTHER STRONG PACIFIC STORM WILL MOVE INTO THE CENTRAL
MOUNTAINS CHRISTMAS EVE AND OVERSPREAD THE REST OF IDAHO BY EARLY
CHRISTMAS MORNING. THE SURFACE COLD FRONT WILL CROSS THE SNAKE
PLAIN LATE CHRISTMAS MORNING. SNOWFALL AMOUNTS WILL RANGE FROM 5
TO 10 INCHES IN THE SNAKE RIVER PLAIN TO UPWARDS OF A FOOT AND A
HALF IN MOUNTAIN REGIONS. WINDS WILL ALSO PICK UP CHRISTMAS
MORNING REDUCING VISIBILITIES DUE TO BLOWING AND DRIFTING SNOW.
WIND GUSTS UP TO 50 MPH ARE POSSIBLE IN THE SOUTH CENTRAL AND
CARIBOU HIGHLANDS AND THE FOOT HILLS OF THE LOWER SNAKE PLAIN.
THIS STORM SYSTEM WILL MOVE EAST OF THE STATE BY MIDNIGHT THURSDAY
NIGHT.

IDZ018-031-032-251200-
/O.CON.KPIH.WS.W.0013.081225T0000Z-081226T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE...ARCO...CHALLIS...MACKAY
234 PM MST WED DEC 24 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY
FOR HEAVY SNOW AND BLOWING SNOW.

A STRONG PACIFIC WINTER STORM SYSTEM WILL BRING SNOW...HEAVY AT
TIMES...TO THE CENTRAL MOUNTAINS OF IDAHO LATE THIS EVENING THROUGH
THURSDAY EVENING. 9 TO 10 INCHES OF SNOW IS EXPECTED AT LOWER
ELEVATIONS WHILE UP TO A FOOT AND A HALF OF SNOW IS POSSIBLE IN
THE HIGHER ELEVATIONS...PARTICULARLY AROUND THE SAWTOOTH MOUNTAINS. GUSTY
WINDS WILL ACCOMPANY THE STORM AS IT MOVES OVER THE AREA CAUSING
DRIFTING AND BLOWING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ019-022>025-251200-
/O.CON.KPIH.WS.W.0013.081225T0000Z-081226T0600Z/
UPPER SNAKE HIGHLANDS-SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...MALAD CITY...OAKLEY...ROCKLAND...DOWNEY...
LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...PRESTON...DAYTON...
MONTPELIER...GEORGETOWN...PARIS
234 PM MST WED DEC 24 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
THURSDAY FOR HEAVY SNOW AND BLOWING SNOW. 

A STRONG PACIFIC STORM SYSTEM WILL BRING SNOW HEAVY AT TIMES TO
THE SOUTHERN AND EASTERN HIGHLANDS TONIGHT THROUGH CHRISTMAS DAY.
LIGHT SNOW WILL START FALLING THIS EVENING AND BECOME
PROGRESSIVELY HEAVIER AS THE NIGHT PROGRESSES. ACCUMULATIONS OF 9 TO
12 INCHES ARE ANTICIPATED FOR MOST AREAS WHILE WASATCH MOUNTAINS
COULD SEE OVER 20 INCHES. A PROLONGED PERIOD OF SNOWFALL WILL LAST
THROUGH MOST OF CHRISTMAS DAY UNTIL SYSTEM FINALLY MOVES OUT OF
AREA LATE CHRISTMAS NIGHT. STRONG SOUTH WINDS AROUND 30 MPH WITH
GUSTS UP TO 50 MPH ARE EXPECTED BETWEEN 3 AND 9 AM MST
PARTICULARLY IN THE AREA BETWEEN BURLEY AND SODA SPRINGS. SIGNIFICANTLY
REDUCED VISIBILITIES ARE LIKELY DUE TO BLOWING AND DRIFTING SNOW.
TRAVEL WILL BE VERY HAZARDOUS IN THESE CONDITIONS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ017-020-021-251200-
/O.CON.KPIH.WS.W.0013.081225T0000Z-081226T0000Z/
EASTERN MAGIC VALLEY-UPPER SNAKE RIVER PLAIN-
LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
IDAHO FALLS...REXBURG...RIGBY...POCATELLO...BLACKFOOT...
FORT HALL...AMERICAN FALLS
234 PM MST WED DEC 24 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THURSDAY
FOR HEAVY SNOW AND BLOWING SNOW.

A STRONG PACIFIC WINTER STORM SYSTEM WILL BRING SNOW...HEAVY AT
TIMES...AND GUSTY WINDS TO THE UPPER AND LOWER SNAKE RIVER PLAIN
INCLUDING THE EASTERN MAGIC VALLEY LATER TONIGHT AND CHRISTMAS
DAY. STRONG SOUTH WINDS OF 20 TO 30 MPH WITH GUSTS UP TO 50 MPH
WILL DEVELOP ALONG THE SOUTHERN FOOT HILLS AND INTERSTATE 86
BETWEEN POCATELLO AND THE INTERSTATE 84 AND 86 INTERCHANGE BETWEEN
3 AND 9 AM MST. ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED
ACROSS MOST OF THE PLAIN. SOUTHERN AREAS TO INCLUDE BURLEY...
AMERICAN FALLS...POCATELLO...FORT HALL MIGHT SEE A FEW HOURS WITH
OUT SNOW WHILE THE SOUTH WINDS TAKE HOLD AND STRONG DOWNSLOPE
FLOW INHIBITS SNOWFALL. THESE STRONG WINDS WILL CAUSE BLOWING AND
DRIFTING SNOW CAUSING DANGEROUSLY LOW VISIBILITIES. TRAVEL OF ANY
KIND WILL BE HAZARDOUS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

000 
WWUS45 KPIH 250534
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
1034 PM MST WED DEC 24 2008



IDZ017-021-251200-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
/O.NEW.KPIH.BZ.W.0001.081225T0534Z-081226T0000Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...FORT HALL...AMERICAN FALLS
1034 PM MST WED DEC 24 2008

...BLIZZARD WARNING IN EFFECT UNTIL 5 PM MST THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST THURSDAY. THE WINTER
STORM WARNING HAS BEEN CANCELLED. 

WIDESPREAD BLIZZARD CONDITIONS ARE FORECAST TO OVERSPREAD THE
EASTERN MAGIC VALLEY AND LOWER SNAKE RIVER PLAIN OVERNIGHT. VERY
STRONG SOUTH WINDS OF 20 TO 30 MPH WITH GUSTS OVER 40 MPH WILL
DEVELOP AND REMAIN STRONG THROUGH CHRISTMAS MORNING. BANDS OF SNOW ARE
FORECAST TO MOVE THROUGH THE REGION WITH LOCALLY HEAVY ACCUMULATIONS.
SIGNIFICANTLY REDUCED VISIBILITIES AND SNOW COVERED ROADS WILL BE
THE RULE ACROSS THE AREA...AND TRAVEL WILL BE EXTREMELY HAZARDOUS.
STORM TOTAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE FORECAST FOR
THE REGION THROUGH CHRISTMAS DAY.

A BLIZZARD WARNING MEANS SNOWFALL WILL COMBINE WITH GUSTY WINDS
TO CREATE WHITEOUT CONDITIONS AND SLICK ROADWAYS. TRAVEL IS NOT
RECOMMENDED IN THE WARNED AREA.

$$

IDZ022-251200-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-081226T0600Z/
/O.NEW.KPIH.BZ.W.0001.081225T0534Z-081226T0000Z/
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...MALAD CITY...OAKLEY...ROCKLAND
1034 PM MST WED DEC 24 2008

...BLIZZARD WARNING IN EFFECT UNTIL 5 PM MST THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST THURSDAY. THE WINTER
STORM WARNING HAS BEEN CANCELLED. 

WIDESPREAD BLIZZARD CONDITIONS ARE FORECAST TO OVERSPREAD THE
SOUTH CENTRAL HIGHLANDS OVERNIGHT. VERY STRONG SOUTH WINDS OF 20
TO 30 MPH WITH GUSTS OVER 40 MPH WILL DEVELOP AND REMAIN STRONG
THROUGH CHRISTMAS MORNING. BANDS OF SNOW ARE FORECAST TO MOVE THROUGH
THE REGION WITH LOCALLY HEAVY ACCUMULATIONS. SIGNIFICANTLY
REDUCED VISIBILITIES AND SNOW COVERED ROADS WILL BE THE RULE
ACROSS THE AREA...AND TRAVEL WILL BE EXTREMELY HAZARDOUS. BY NOON
CHRISTMAS DAY...5 TO 10 INCHES OF NEW SNOW ACCUMULATIONS ARE
FORECAST.

A BLIZZARD WARNING MEANS SNOWFALL WILL COMBINE WITH GUSTY WINDS
TO CREATE WHITEOUT CONDITIONS AND SLICK ROADWAYS. TRAVEL IS NOT
RECOMMENDED IN THE WARNED AREA.

$$

IDZ018-031-032-251200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE...ARCO...CHALLIS...MACKAY
1034 PM MST WED DEC 24 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST CHRISTMAS DAY.

A STRONG PACIFIC WINTER STORM SYSTEM WILL BRING SNOW...HEAVY AT
TIMES...TO THE CENTRAL MOUNTAINS OF IDAHO LATE OVERNIGHT
THROUGH CHRISTMAS EVENING. 9 TO 10 INCHES OF SNOW IS EXPECTED AT
LOWER ELEVATIONS WHILE UP TO A FOOT AND A HALF OF SNOW IS
POSSIBLE IN THE HIGHER ELEVATIONS...PARTICULARLY AROUND THE
SAWTOOTH MOUNTAINS. GUSTY WINDS WILL ACCOMPANY THE STORM AS IT
MOVES OVER THE AREA CAUSING DRIFTING AND BLOWING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ019-023>025-251200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T0600Z/
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
1034 PM MST WED DEC 24 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST
THURSDAY. 

A STRONG PACIFIC STORM SYSTEM WILL BRING SNOW HEAVY AT TIMES TO
THE SOUTHERN AND EASTERN HIGHLANDS TONIGHT THROUGH CHRISTMAS DAY.
SNOW WILL BECOME PROGRESSIVELY HEAVIER AS THE NIGHT PROGRESSES.
ACCUMULATIONS OF 9 TO 12 INCHES ARE ANTICIPATED FOR MOST AREAS
WHILE WASATCH MOUNTAINS COULD SEE OVER 20 INCHES. A PROLONGED
PERIOD OF SNOWFALL WILL LAST THROUGH MOST OF CHRISTMAS DAY UNTIL
SYSTEM FINALLY MOVES OUT OF AREA LATE CHRISTMAS NIGHT. STRONG
SOUTH WINDS AROUND 30 MPH WITH GUSTS UP TO 50 MPH ARE EXPECTED
BETWEEN 3 AND 9 AM MST PARTICULARLY IN THE AREA BETWEEN BURLEY AND
SODA SPRINGS. SIGNIFICANTLY REDUCED VISIBILITIES ARE LIKELY DUE TO
BLOWING AND DRIFTING SNOW. TRAVEL WILL BE VERY HAZARDOUS IN THESE
CONDITIONS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ020-251200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY
1034 PM MST WED DEC 24 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST
THURSDAY...

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

A STRONG PACIFIC WINTER STORM SYSTEM WILL BRING SNOW...HEAVY AT
TIMES...AND GUSTY WINDS TO THE UPPER SNAKE RIVER PLAIN LATER
TONIGHT AND CHRISTMAS DAY. ACCUMULATIONS OF 5 TO 10 INCHES ARE
EXPECTED ACROSS MOST OF THE PLAIN. STRONG WINDS WILL CAUSE
BLOWING AND DRIFTING SNOW CAUSING DANGEROUSLY LOW VISIBILITIES.
TRAVEL OF ANY KIND WILL BE HAZARDOUS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

000 
WWUS45 KPIH 250938
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
238 AM MST THU DEC 25 2008

IDZ019-023>025-252230-
/O.EXT.KPIH.WS.W.0013.000000T0000Z-081226T1200Z/
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
238 AM MST THU DEC 25 2008

...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 AM MST FRIDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 AM MST FRIDAY. 

A STRONG PACIFIC STORM SYSTEM WILL BRING SNOW HEAVY AT TIMES TO
THE SOUTHERN AND EASTERN HIGHLANDS THROUGH CHRISTMAS NIGHT. SNOW
WILL BE HEAVY AT TIMES.  TOTAL ACCUMULATIONS OF 9 TO 13 INCHES ARE
ANTICIPATED FOR MOST AREAS WHILE WASATCH MOUNTAINS COULD SEE OVER
2 FEET. STRONG SOUTH WINDS AROUND 30 MPH WITH GUSTS UP TO 50 MPH
ARE EXPECTED THROUGH THE MORNING HOURS...PARTICULARLY IN THE AREA
BETWEEN BURLEY AND SODA SPRINGS. SIGNIFICANTLY REDUCED
VISIBILITIES ARE LIKELY DUE TO BLOWING AND DRIFTING SNOW. TRAVEL
WILL BE VERY HAZARDOUS IN THESE CONDITIONS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ017-021-252230-
/O.CON.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...FORT HALL...AMERICAN FALLS
238 AM MST THU DEC 25 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

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

BLIZZARD CONDITIONS ARE EXPECTED TO CONTINUE ACROSS THE EASTERN
MAGIC VALLEY TODAY AND LOWER SNAKE RIVER PLAIN. SUSTAINED WINDS OF 20
TO 40 MPH WITH GUSTS APPROACHING 60 MPH WILL LAST THROUGH MUCH
OF THE MORNING. BANDS OF SNOW ARE FORECAST TO MOVE THROUGH THE
REGION WITH LOCALLY HEAVY ACCUMULATIONS. SIGNIFICANTLY REDUCED
VISIBILITIES AND SNOW COVERED ROADS WILL BE THE RULE ACROSS THE
AREA...AND TRAVEL WILL BE EXTREMELY HAZARDOUS. STORM TOTAL SNOW
ACCUMULATIONS OF 5 TO 10 INCHES...WITH LOCALLY HIGHER
AMOUNTS...ARE FORECAST FOR THE REGION.

A BLIZZARD WARNING MEANS SNOWFALL WILL COMBINE WITH GUSTY WINDS
TO CREATE WHITEOUT CONDITIONS AND SLICK ROADWAYS. TRAVEL IS NOT
RECOMMENDED IN THE WARNED AREA.

$$

IDZ022-252230-
/O.CON.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...MALAD CITY...OAKLEY...ROCKLAND
238 AM MST THU DEC 25 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

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

BLIZZARD CONDITIONS ARE EXPECTED TO CONTINUE ACROSS THE SOUTH
CENTRAL HIGHLANDS TODAY. VERY STRONG SOUTH WINDS OF 20 TO 40 MPH WITH
GUSTS APPROACHING 60 MPH WILL LAST THROUGH MUCH OF THE MORNING.
BANDS OF SNOW ARE FORECAST TO MOVE THROUGH THE REGION WITH LOCALLY
HEAVY ACCUMULATIONS. SIGNIFICANTLY REDUCED VISIBILITIES AND SNOW
COVERED ROADS WILL BE THE RULE ACROSS THE AREA...AND TRAVEL WILL
BE EXTREMELY HAZARDOUS. BY LATE AFTERNOON...5 TO 10 INCHES OF
TOTAL SNOW IS ANTICIPATED.

A BLIZZARD WARNING MEANS SNOWFALL WILL COMBINE WITH GUSTY WINDS
TO CREATE WHITEOUT CONDITIONS AND SLICK ROADWAYS. TRAVEL IS NOT
RECOMMENDED IN THE WARNED AREA.

$$

IDZ018-031-032-252230-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE...ARCO...CHALLIS...MACKAY
238 AM MST THU DEC 25 2008

...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. 

A STRONG PACIFIC WINTER STORM SYSTEM WILL CONTINUE TO BRING
SNOW...HEAVY AT TIMES...TO THE CENTRAL MOUNTAINS OF IDAHO TODAY. 8
TO 12 INCHES OF TOTAL SNOW IS EXPECTED AT LOWER ELEVATIONS WHILE
UP TO 20 INCHES IS POSSIBLE IN THE HIGHER
ELEVATIONS...PARTICULARLY AROUND THE SAWTOOTH MOUNTAINS. GUSTY
WINDS WILL ACCOMPANY THE STORM AS IT MOVES OVER THE AREA CAUSING
DRIFTING AND BLOWING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ020-252230-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY
238 AM MST THU DEC 25 2008

...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. 

A STRONG PACIFIC WINTER STORM SYSTEM WILL CONTINUE TO BRING
SNOW...HEAVY AT TIMES...AND GUSTY WINDS TO THE UPPER SNAKE RIVER
PLAIN LATER TODAY. ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED
ACROSS MOST OF THE PLAIN. STRONG WINDS WILL CAUSE BLOWING AND
DRIFTING SNOW CAUSING DANGEROUSLY LOW VISIBILITIES. TRAVEL OF ANY
KIND WILL BE HAZARDOUS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

000 
WWUS45 KPIH 251937
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
1237 PM MST THU DEC 25 2008

IDZ017-260000-
/O.CAN.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
/O.EXA.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
EASTERN MAGIC VALLEY-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY
1237 PM MST THU DEC 25 2008

...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...
...BLIZZARD WARNING IS CANCELLED...

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

THE STRONG WINDS HAVE SUBSIDED ACROSS THE EASTERN MAGIC VALLEY
THIS AFTERNOON. HOWEVER...LARGE AMOUNTS OF SNOW HAVE FALLEN ACROSS
THE AREA ESPECIALLY FARTHER NORTH. WITH SOME ADDITIONAL
ACCUMULATION AND GUSTY WEST WINDS BEHIND THE COLD FRONT EXPECTED...BLOWING
AND DRIFTING SNOW WILL CONTINUE TO BE A PROBLEM.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ020-260000-
/O.EXT.KPIH.WS.W.0013.000000T0000Z-081226T1200Z/
UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY
1237 PM MST THU DEC 25 2008

...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 AM MST FRIDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 AM MST FRIDAY. 

SNOW AND GUSTY WINDS CONTINUE ACROSS THE AREA THIS AFTERNOON.
TRAVEL IS VERY HAZARDOUS AND TRAVEL IS STILL NOT RECOMMENDED. SNOW
IS EXPECTED TO CONTINUE WELL INTO THE NIGHT AS IT APPEARS A
SECONDARY AREA OF SNOW WILL MOVE THROUGH THE REGION. THIS WILL BE
DUE TO A CONVERGENCE ZONE EVENT. ON TOP OF THE SNOW CURRENTLY
EXPERIENCED AND FALLING...ANOTHER 1 TO 3 INCHES IS EXPECTED
OVERNIGHT. THIS WILL BRING STORM TOTALS UP INTO THE 8 TO 12 INCH
RANGE. 

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ021-260000-
/O.CON.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...POCATELLO...BLACKFOOT...FORT HALL...
AMERICAN FALLS
1237 PM MST THU DEC 25 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

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

WINDS CONTINUE TO SLOWLY WEAKEN THIS AFTERNOON ACROSS THE LOWER
SNAKE RIVER PLAIN. DUE TO THE VAST AMOUNTS OF SNOW ON THE GROUND
...SNOW STILL FALLING AND GUSTY WINDS...BLIZZARD CONDITIONS WILL
SILL BE A PROBLEM FOR THE REST OF THE AFTERNOON IN MANY AREAS.
TRAVEL IS STILL VERY HAZARDOUS AND NOT RECOMMENDED ACROSS THE
WARNED AREA. STORM TOTAL ACCUMULATIONS OF 5 TO 10 INCHES ARE STILL
EXPECTED BY LATE AFTERNOON. 

A BLIZZARD WARNING MEANS SNOWFALL WILL COMBINE WITH GUSTY WINDS
TO CREATE WHITEOUT CONDITIONS AND SLICK ROADWAYS. TRAVEL IS NOT
RECOMMENDED IN THE WARNED AREA.

$$

IDZ022-260000-
/O.CON.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...MALAD CITY...OAKLEY...ROCKLAND
1237 PM MST THU DEC 25 2008

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

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

WINDS CONTINUE TO SLOWLY WEAKEN THIS AFTERNOON ACROSS THE LOWER
SNAKE RIVER PLAIN. DUE TO THE VAST AMOUNTS OF SNOW ON THE GROUND
...SNOW STILL FALLING AND GUSTY WINDS...BLIZZARD CONDITIONS WILL
SILL BE A PROBLEM FOR THE REST OF THE AFTERNOON IN MANY AREAS.
TRAVEL IS STILL VERY HAZARDOUS AND NOT RECOMMENDED ACROSS THE
WARNED AREA. STORM TOTAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE
EXPECTED BY LATE AFTERNOON.  

A BLIZZARD WARNING MEANS SNOWFALL WILL COMBINE WITH GUSTY WINDS
TO CREATE WHITEOUT CONDITIONS AND SLICK ROADWAYS. TRAVEL IS NOT
RECOMMENDED IN THE WARNED AREA.

$$

IDZ018-031-032-260000-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE...ARCO...CHALLIS...MACKAY
1237 PM MST THU DEC 25 2008

...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. 

SNOW WILL CONTINUE TO WIND DOWN ACROSS THE REGION THIS AFTERNOON.
MANY AREAS HAVE ALREADY REPORTED 12 TO 18 INCHES WITH MORE TO FALL
IN THE NEXT FEW HOURS. 10 TO 20 INCHES OF TOTAL SNOW IS EXPECTED
AT LOWER ELEVATIONS WHILE UP TO 24 INCHES IS POSSIBLE IN THE
HIGHER ELEVATIONS... PARTICULARLY AROUND THE SAWTOOTH MOUNTAINS.
GUSTY WINDS WILL CONTINUE CAUSING DRIFTING AND BLOWING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ019-023>025-260000-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T1200Z/
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
1237 PM MST THU DEC 25 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. 

SNOW WILL CONTINUE INTO THE NIGHT ACROSS THE WARNED AREA. TOTAL
ACCUMULATIONS OF 8 TO 13 INCHES ARE ANTICIPATED FOR MOST AREAS
WHILE WASATCH MOUNTAINS COULD SEE OVER 2 FEET. WINDY CONDITIONS
WILL CONTINUE THIS EVENING ALTHOUGH WIND SPEEDS WILL DECREASE
OVERNIGHT. SIGNIFICANTLY REDUCED VISIBILITIES ARE LIKELY DUE TO
BLOWING AND DRIFTING SNOW. TRAVEL WILL BE VERY HAZARDOUS IN THESE
CONDITIONS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

000 
WWUS45 KPIH 252345
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
445 PM MST THU DEC 25 2008

IDZ021-260045-
/O.EXP.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...POCATELLO...BLACKFOOT...FORT HALL...
AMERICAN FALLS
445 PM MST THU DEC 25 2008

...BLIZZARD WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

THE BLIZZARD WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON. 

ONLY LIGHT SNOWS REMAIN ACROSS THE LOWER SNAKE RIVER PLAIN LATE
THIS AFTERNOON. WIDESPREAD VERY STRONG WINDS HAVE DIMINISHED IN
INTENSITY. LOCALIZED AREAS OF NEAR WHITE-OUT CONDITIONS REMAIN
POSSIBLE EARLY THIS EVENING...BUT THE THREAT OF WIDESPREAD
BLIZZARD CONDITIONS HAVE ENDED. THEREFORE THE BLIZZARD WARNING
WILL BE ALLOWED TO EXPIRE AT 5 PM MST.

$$

IDZ022-260045-
/O.EXP.KPIH.BZ.W.0001.000000T0000Z-081226T0000Z/
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...MALAD CITY...OAKLEY...ROCKLAND
445 PM MST THU DEC 25 2008

...BLIZZARD WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

THE BLIZZARD WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON. 

LIGHT SNOWS AND BREEZY WINDS WILL CONTINUE THROUGH EARLY THIS
EVENING. LOCALIZED AREAS OF NEAR WHITE- OUT CONDITIONS REMAIN
POSSIBLE...BUT THE THREAT OF WIDESPREAD BLIZZARD CONDITIONS HAVE
ENDED. THEREFORE THE BLIZZARD WARNING WILL BE ALLOWED TO EXPIRE AT
5 PM MST.

$$

IDZ017-018-031-032-260045-
/O.EXP.KPIH.WS.W.0013.000000T0000Z-081226T0000Z/
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
STANLEY...CLAYTON...HAILEY...KETCHUM...BELLEVUE...ARCO...
CHALLIS...MACKAY
445 PM MST THU DEC 25 2008

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

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

HEAVY SNOWS HAVE MOVED OUT OF THE REGION AND WINDS HAVE
DIMINISHED. THE THREAT OF HAZARDOUS WINTER WEATHER HAS ENDED AND
THEREFORE THE WINTER STORM WARNING WILL BE ALLOWED TO EXPIRE AT 5
PM MST.

$$

IDZ019-023>025-261200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T1200Z/
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
445 PM MST THU DEC 25 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. 

SNOW WILL CONTINUE INTO THE NIGHT ACROSS THE WARNED AREA. TOTAL
ACCUMULATIONS OF 8 TO 13 INCHES ARE ANTICIPATED FOR MOST AREAS
WHILE WASATCH MOUNTAINS COULD SEE OVER 2 FEET. GUSTY WINDS WILL
CONTINUE THIS EVENING ALTHOUGH WIND SPEEDS WILL DECREASE
OVERNIGHT. SIGNIFICANTLY REDUCED VISIBILITIES ARE LIKELY DUE TO
BLOWING AND DRIFTING SNOW. TRAVEL WILL BE VERY HAZARDOUS IN THESE
CONDITIONS.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IDZ020-261200-
/O.CON.KPIH.WS.W.0013.000000T0000Z-081226T1200Z/
UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY
445 PM MST THU DEC 25 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. 

SNOW AND GUSTY WINDS WILL CONTINUE ACROSS THE AREA OVERNIGHT.
TRAVEL REMAINS VERY HAZARDOUS AND IS STILL NOT RECOMMENDED. SNOW
IS EXPECTED TO CONTINUE WELL INTO THE NIGHT AS IT APPEARS A
SECONDARY AREA OF SNOW WILL MOVE THROUGH THE REGION. ON TOP OF
THE SNOW CURRENTLY EXPERIENCED AND FALLING...ANOTHER 1 TO 3 INCHES
IS EXPECTED OVERNIGHT. THIS WILL BRING STORM TOTALS UP INTO THE 8
TO 12 INCH RANGE.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

000 
WWUS45 KPIH 260421
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
921 PM MST THU DEC 25 2008


IDZ019-020-023>025-260530-
/O.CAN.KPIH.WS.W.0013.000000T0000Z-081226T1200Z/
UPPER SNAKE HIGHLANDS-UPPER SNAKE RIVER PLAIN-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...IDAHO FALLS...REXBURG...RIGBY...DOWNEY...
LAVA HOT SPRINGS...SODA SPRINGS...WAYAN...PRESTON...DAYTON...
MONTPELIER...GEORGETOWN...PARIS
921 PM MST THU DEC 25 2008

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS CANCELLED THE
WINTER STORM WARNING. 

THE COMBINATION OF WIDESPREAD HEAVY SNOW AND GUSTY WINDS HAS MOVED
OUT OF THE REGION...AND THE THREAT OF HAZARDOUS WINTER WEATHER HAS
ENDED. THEREFORE THE WINTER STORM WARNING HAS BEEN CANCELLED. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
232 PM MST TUE DEC 23 2008

.SHORT TERM...THE 12Z MODEL RUNS CONTINUE TO SHOW POTENTIAL FOR ANOTHER
SIGNIFICANT SNOW EVENT WEDNESDAY NIGHT AND CHRISTMAS DAY. GFS IS
DIGGING FEATURES A BIT MORE SOUTH ALONG THE COAST AND SPEEDING UP
THE TIMING CLOSER TO THE ECMWF. BOTH MODELS INDICATE A SIMILAR
SOURCE REGION AND TRACK TO THE STORM SYSTEM ON MONDAY AND SUBSTANTIAL
MOISTURE. MODEL QPF FOR THE MOUNTAIN AREAS IS 1.00 TO 1.40 INCH
LIQUID EQUIVALENT THAT COULD EASILY TRANSLATE INTO A FOOT OF SNOW.
THE NAM NUMERICAL OUTPUT STATISTICS SUGGEST .64 INCH LIQUID WATER
IN THE POCATELLO AREA OR A HALF FOOT OF SNOW. BOTH THE NAM AND GFS
INDICATE STRONG SOUTH WINDS IN THE POCATELLO AREA THURSDAY
MORNING. WINDS OF 38 KTS POSSIBLE NEAR OR JUST BELOW CLOUD BASE
WHICH COULD OFTEN PRODUCE PRECIPITATION SHADOWING NEAR THE FOOT
HILLS. AT 700 MB LEVEL 50 KTS PLUS ARE MORE WESTERLY AND THAT
COULD WORK AGAINST THE TERRAIN SHADOWING EFFECT. A JET WIND
SEGMENT WITH RIGHT ENTRANCE DYNAMICS FOCUSED OVER THE CENTRAL
MOUNTAINS WEDNESDAY EVENING SHIFTS TO THE EASTERN HIGHLANDS
OVERNIGHT. THOSE DETAILS COULD CHANGE IF THE LOW PRESSURE TROUGH
ELONGATES NORTH AND SOUTH MORE AS IT COMES INLAND. THEREFORE WILL
GO WITH A WINTER STORM WATCH FOR NOW AND ATTEMPT TO ADJUST OVER
THE NEXT COUPLE MODEL RUNS. PRESENT TIMING WOULD HAVE THE STORM
ENDING LATE THURSDAY. RS

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY.
TRANSITION TO A ZONAL FLOW ALOFT PATTERN BEGINNING SATURDAY WITH
SEVERAL WEAK PACIFIC SYSTEMS FILTERING THROUGH.  SHOULD SEE A
WARMING TREND WITH GFS A BIT WARMER THAN EUROPEAN MODEL.  WENT WITH
SLIGHTLY ABOVE NORMAL TEMPERATURES BY SUNDAY INTO TUESDAY BUT DID
NOT RAISE AS HIGH AS GFS HAS IT.  TEMPERATURES WILL INCREASE
NONETHELESS.  PRECIPITATION SHOULD BE MAINLY IN THE MOUNTAINS WITH
THE EXPECTED FAST MOVING PACIFIC SYSTEMS BUT KEPT AT LEAST A CHANCE
IN THE SNAKE PLAIN THROUGH THE PERIOD.  EXPECT OCCASIONALLY BREEZY
PERIODS IN THIS PATTERN.
GK

&&

.AVIATION...STRATUS HAS BEEN PERSISTENT IN SNAKE RIVER PLAIN WITH
BOTH BYI AND PIH REMAINING MVFR ALL DAY.  DENSE FOG AT THE IDAHO
FALLS AIRPORT HAS LIFTED WITH VFR CONDITIONS THERE.  HAILEY HAS BEEN
VFR UNDER CLEAR SKIES ALL DAY.  DIFFICULT FORECAST IN DETERMINING
TIMING OF FOG AND STRATUS AT THE SNAKE PLAIN TAF SITES.  FOR NOW
HAVE BYI AND PIH GOING VFR LATER TONIGHT AND IFR RETURNING TO IDA AS
THE CURRENT CLEAR SKIES WILL PRODUCE MORE RAPID COOLING TONIGHT.
ALL AREAS IMPACTED BY MAJOR WINTER STORM WEDNESDAY NIGHT AND
THURSDAY AND EXPECT IFR CONDITIONS TO MOVE INTO HAILEY BY LATE
WEDNESDAY AFTERNOON WITH SNOW.
GK

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM WEDNESDAY AFTERNOON THROUGH THURSDAY
EVENING FOR IDZ017-019>025.

WINTER STORM WATCH FROM WEDNESDAY MORNING THROUGH THURSDAY
EVENING FOR IDZ018-031-032.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
603 AM MST TUE DEC 23 2008

IDZ017>025-031-032-241315-
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-
603 AM MST TUE DEC 23 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

WEAK UPPER LEVEL DISTURBANCE WILL MOVE OVER SOUTHEASTERN IDAHO
THIS MORNING CAUSING LIGHT SNOWSHOWERS AND ACCUMULATIONS OF ABOUT
AN INCH. ONCE DISTURBANCE MOVES OUT OF AREA WEAK RIDGING WILL SET
UP TONIGHT THROUGH TOMORROW AFTERNOON.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

ANOTHER PACIFIC SYSTEM WILL AFFECT AREA WEDNESDAY NIGHT ACROSS
CENTRAL MOUNTAINS AND OVERSPREAD REMAINING AREAS BY EARLY THURSDAY
MORNING. SNOWFALL AMOUNTS OF 10 INCHES IN MOUNTAINOUS AREAS
POSSIBLE WITH 3 TO 5 INCHES ACROSS SNAKE RIVER PLAIN. WINDS ARE
ALSO EXPECTED TO BE QUITE STRONG ESPECIALLY ACROSS SOUTHERN
REGIONS WITH GUSTS UPWARDS OF 40 MPH. DRIVING CONDITIONS WILL BE
TREACHEROUS. ALL PRECIPITATION SHOULD END BY THURSDAY NIGHT. NEXT
CHANCE FOR SNOWFALL APPEARS TO BE SATURDAY NIGHT AS QUICK SYSTEM
DROPS DOWN FROM CANADA ONCE AGAIN.

.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.