Blizzard Warning 1, NWS Pocatello, ID

000 
WWUS45 KPIH 291122
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
422 AM MST SAT DEC 29 2007

IDZ019-020-292330-
/O.CON.KPIH.BZ.W.0001.071230T0600Z-071231T0600Z/
UPPER SNAKE HIGHLANDS-UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...IDAHO FALLS...REXBURG...RIGBY
422 AM MST SAT DEC 29 2007

...BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SUNDAY...

A BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SUNDAY. 

A POWERFUL WINTER STORM COMING FROM THE PACIFIC WILL BRING HIGH
WINDS AND LIGHT TO MODERATE AMOUNTS OF SNOW TO THE UPPER SNAKE
RIVER PLAIN AND THE UPPER SNAKE HIGHLANDS. THE COMBINATION OF
SNOW ALREADY ON THE GROUND...ADDITIONAL SNOW OF 2 TO 12 INCHES...
AND WINDS OF 35 TO 45 MPH WITH GUSTS TO 60 MPH WILL MEAN
DANGEROUS TRAVEL CONDITIONS. HEAVY DRIFTING OF SNOW WILL CAUSE
WIDESPREAD TEMPORARY ROAD CLOSURES. BLOWING SNOW WILL REDUCE
VISIBILITY TO NEAR ZERO...CREATING THE DANGER KNOWN AS WHITEOUT
CONDITIONS. THIS INCLUDES THE MAIN ROADS OF INTERSTATE 15 TO
MONIDA PASS AND U S ROUTE 20 FROM ARCO TO TARGHEE PASS ON THE
MONTANA-IDAHO BORDER.

THE PEAK DANGER TIME WILL BE IN THE AFTERNOON HOURS ON SUNDAY...
WHEN WINDS ARE EXPECTED TO BE THE STRONGEST IN THIS AREA.

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.

$$

IDZ018-031-292330-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
422 AM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A POWERFUL PACIFIC WINTER STORM WILL BRING HIGH WIND AND LIGHT TO
MODERATE SNOW TO THE MOUNTAINS OF CENTRAL IDAHO. IN THE SAWTOOTH
AND WOOD RIVER BASINS...EXPECT ADDITIONAL SNOW TOTALING 4 TO
12 INCHES. COMBINED WITH THE HIGH WIND OF 35 TO 45 MPH WITH GUSTS
TO 60 MPH...THE RESULT WILL BE HEAVY DRIFTING OF THE SNOW AND
NEAR ZERO VISIBILITY IN BLOWING SNOW. THE STRONGEST WIND AND
WORST CONDITIONS CAN BE EXPECTED LATE SATURDAY NIGHT UNTIL AROUND
SUNDAY NOON.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS
OR IMPOSSIBLE.

$$

IDZ017-021-022-292330-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...MALAD CITY...OAKLEY...
ROCKLAND
422 AM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A VICIOUS WINTER STORM WILL MOVE ACROSS SOUTHERN IDAHO FROM LATE
TONIGHT UNTIL SUNDAY EVENING. THIS STORM WILL BRING WIND OF 35 TO
45 MPH WITH HIGHER GUSTS AND 2 TO 8 INCHES OF SNOW. WHILE THE
SNOW AMOUNT IS ONLY MODERATE IN ACCUMULATION...WHEN COMBINED WITH
THE HIGH WIND...THE WEATHER CONDITIONS BECOME DANGEROUS. HEAVY
DRIFTING OF SNOW CAN CAUSE TEMPORARY ROAD CLOSURES AND BLOWING
SNOW CAN REDUCE VISIBILITY TO ZERO.

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

$$

IDZ023>025-292330-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
CARIBOU HIGHLANDS-CACHE VALLEY/IDAHO PORTION-
WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DOWNEY...LAVA HOT SPRINGS...
SODA SPRINGS...WAYAN...PRESTON...DAYTON...MONTPELIER...
GEORGETOWN...PARIS
422 AM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

THE STRONGEST WINTER STORM OF THE SEASON IS EXPECTED TO ARRIVE
LATE SATURDAY NIGHT AND CONTINUE INTO SUNDAY NIGHT IN THE
SOUTHEASTERN IDAHO HIGHLANDS AND BEAR LAKE BASIN. ADDITIONAL SNOW
OF 4 TO 12 INCHES WILL ACCUMULATE DURING THIS TIME. ADDED TO THE
SNOW WILL BE HIGH WIND OF 35 TO 45 MPH WITH STRONGER GUSTS. THE
COMBINATION OF SNOW ALREADY ON THE GROUND...ADDITIONAL SNOW...AND
HIGH WIND WILL CAUSE HEAVY DRIFING OF SNOW AND LOW VISIBILITY...
NEAR ZERO AT TIMES...IN BLOWING SNOW. THIS WILL LIKELY MEAN AT
LEAST TEMPORARY ROAD CLOSURES. PEOPLE PLANNING TRAVEL THROUGH
EASTERN IDAHO ON SUNDAY SHOULD PREPARE THEIR MOTOR VEHICLE FOR
EXTREME WINTER CONDITIONS. THE WORST TIME FOR THIS AREA SHOULD BE
FROM SUNDAY MID-MORNING UNTIL MIDNIGHT SUNDAY NIGHT.

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.

$$

IDZ032-292330-
/O.CON.KPIH.SB.Y.0005.071230T0600Z-071231T0600Z/
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...ARCO...CHALLIS...MACKAY
422 AM MST SAT DEC 29 2007

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 PM
THIS EVENING TO 11 PM MST SUNDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 PM
THIS EVENING TO 11 PM MST SUNDAY. 

A POWERFUL WINTER STORM WILL PUSH THROUGH CENTRAL IDAHO LATE
SATURDAY NIGHT AND SUNDAY. AS IT DOES...IT WILL PRODUCE SOME
ADDITIONAL LIGHT SNOW...1 TO 6 INCHES...IN THE LOST RIVER AND
PAHSIMEROI BASINS. IT WILL ALSO BRING WIND IN EXCESS OF 30 MPH
WITH HIGHER GUSTS. THIS WILL CAUSE LOCALIZED HEAVY DRIFTING THAT
MAY MAKE DRIVING DIFFICULT. EXPECT LOW VISIBILITY IN BLOWING SNOW
THAT COULD ALSO CAUSE SOME LOCALIZED WHITEOUT CONDITIONS.

THE STRONGEST WIND...AND WORST CONDITIONS...SHOULD OCCUR FROM
VERY EARLY SUNDAY MORNING UNTIL THE EARLY AFTERNOON ON SUNDAY.

$$

000 
WWUS45 KPIH 291138
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
438 AM MST SAT DEC 29 2007

IDZ019-020-292345-
/O.CON.KPIH.BZ.W.0001.071230T0600Z-071231T0600Z/
UPPER SNAKE HIGHLANDS-UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...IDAHO FALLS...REXBURG...RIGBY
438 AM MST SAT DEC 29 2007

...BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SUNDAY...

A BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SUNDAY. 

A POWERFUL WINTER STORM COMING FROM THE PACIFIC WILL BRING HIGH
WINDS AND LIGHT TO MODERATE AMOUNTS OF SNOW TO THE UPPER SNAKE
RIVER PLAIN AND THE UPPER SNAKE HIGHLANDS. THE COMBINATION OF
SNOW ALREADY ON THE GROUND...ADDITIONAL SNOW OF 2 TO 12 INCHES...
AND WINDS OF 35 TO 45 MPH WITH GUSTS TO 60 MPH WILL MEAN
DANGEROUS TRAVEL CONDITIONS. HEAVY DRIFTING OF SNOW WILL CAUSE
WIDESPREAD TEMPORARY ROAD CLOSURES. BLOWING SNOW WILL REDUCE
VISIBILITY TO NEAR ZERO...CREATING THE DANGER KNOWN AS WHITEOUT
CONDITIONS. THIS INCLUDES THE MAIN ROADS OF INTERSTATE 15 TO
MONIDA PASS AND U S ROUTE 20 FROM ARCO TO TARGHEE PASS ON THE
MONTANA-IDAHO BORDER.

THE PEAK DANGER TIME WILL BE IN THE AFTERNOON HOURS ON SUNDAY...
WHEN WINDS ARE EXPECTED TO BE THE STRONGEST IN THIS AREA.

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.

$$

IDZ018-031-292345-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
438 AM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A POWERFUL PACIFIC WINTER STORM WILL BRING HIGH WIND AND LIGHT TO
MODERATE SNOW TO THE MOUNTAINS OF CENTRAL IDAHO. IN THE SAWTOOTH
AND WOOD RIVER BASINS...EXPECT ADDITIONAL SNOW TOTALING 4 TO
12 INCHES. COMBINED WITH THE HIGH WIND OF 35 TO 45 MPH WITH GUSTS
TO 60 MPH...THE RESULT WILL BE HEAVY DRIFTING OF THE SNOW AND
NEAR ZERO VISIBILITY IN BLOWING SNOW. THE STRONGEST WIND AND
WORST CONDITIONS CAN BE EXPECTED LATE SATURDAY NIGHT UNTIL AROUND
SUNDAY NOON.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS
OR IMPOSSIBLE.

$$

IDZ017-021-022-292345-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...MALAD CITY...OAKLEY...
ROCKLAND
438 AM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A VICIOUS WINTER STORM WILL MOVE ACROSS SOUTHERN IDAHO FROM LATE
TONIGHT UNTIL SUNDAY EVENING. THIS STORM WILL BRING WIND OF 35 TO
45 MPH WITH HIGHER GUSTS AND 2 TO 8 INCHES OF SNOW. WHILE THE
SNOW AMOUNT IS ONLY MODERATE IN ACCUMULATION...WHEN COMBINED WITH
THE HIGH WIND...THE WEATHER CONDITIONS BECOME DANGEROUS. HEAVY
DRIFTING OF SNOW CAN CAUSE TEMPORARY ROAD CLOSURES AND BLOWING
SNOW CAN REDUCE VISIBILITY TO ZERO.

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

$$

IDZ023>025-292345-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
CARIBOU HIGHLANDS-CACHE VALLEY/IDAHO PORTION-
WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DOWNEY...LAVA HOT SPRINGS...
SODA SPRINGS...WAYAN...PRESTON...DAYTON...MONTPELIER...
GEORGETOWN...PARIS
438 AM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

THE STRONGEST WINTER STORM OF THE SEASON IS EXPECTED TO ARRIVE
LATE SATURDAY NIGHT AND CONTINUE INTO SUNDAY NIGHT IN THE
SOUTHEASTERN IDAHO HIGHLANDS AND BEAR LAKE BASIN. ADDITIONAL SNOW
OF 4 TO 12 INCHES WILL ACCUMULATE DURING THIS TIME. ADDED TO THE
SNOW WILL BE HIGH WIND OF 35 TO 45 MPH WITH STRONGER GUSTS. THE
COMBINATION OF SNOW ALREADY ON THE GROUND...ADDITIONAL SNOW...AND
HIGH WIND WILL CAUSE HEAVY DRIFING OF SNOW AND LOW VISIBILITY...
NEAR ZERO AT TIMES...IN BLOWING SNOW. THIS WILL LIKELY MEAN AT
LEAST TEMPORARY ROAD CLOSURES. PEOPLE PLANNING TRAVEL THROUGH
EASTERN IDAHO ON SUNDAY SHOULD PREPARE THEIR MOTOR VEHICLE FOR
EXTREME WINTER CONDITIONS. THE WORST TIME FOR THIS AREA SHOULD BE
FROM SUNDAY MID-MORNING UNTIL MIDNIGHT SUNDAY NIGHT.

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.

$$

IDZ032-292345-
/O.CON.KPIH.SB.Y.0005.071230T0600Z-071231T0600Z/
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...ARCO...CHALLIS...MACKAY
438 AM MST SAT DEC 29 2007

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 PM
THIS EVENING TO 11 PM MST SUNDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 PM
THIS EVENING TO 11 PM MST SUNDAY. 

A POWERFUL WINTER STORM WILL PUSH THROUGH CENTRAL IDAHO LATE
SATURDAY NIGHT AND SUNDAY. AS IT DOES...IT WILL PRODUCE SOME
ADDITIONAL LIGHT SNOW...1 TO 6 INCHES...IN THE LOST RIVER AND
PAHSIMEROI BASINS. IT WILL ALSO BRING WIND IN EXCESS OF 30 MPH
WITH HIGHER GUSTS. THIS WILL CAUSE LOCALIZED HEAVY DRIFTING THAT
MAY MAKE DRIVING DIFFICULT. EXPECT LOW VISIBILITY IN BLOWING SNOW
THAT COULD ALSO CAUSE SOME LOCALIZED WHITEOUT CONDITIONS.

THE STRONGEST WIND...AND WORST CONDITIONS...SHOULD OCCUR FROM
VERY EARLY SUNDAY MORNING UNTIL THE EARLY AFTERNOON ON SUNDAY.

$$

000 
WWUS45 KPIH 292134
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
234 PM MST SAT DEC 29 2007

IDZ019-020-301100-
/O.CON.KPIH.BZ.W.0001.071230T0600Z-071231T0600Z/
UPPER SNAKE HIGHLANDS-UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...IDAHO FALLS...REXBURG...RIGBY
234 PM MST SAT DEC 29 2007

...BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SUNDAY...

A BLIZZARD WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SUNDAY. 

A STRONG COLD FRONT WILL BRING HIGH WINDS AND LIGHT TO MODERATE
AMOUNTS OF SNOW TO THE UPPER SNAKE RIVER PLAIN AND THE UPPER SNAKE
HIGHLANDS. THE COMBINATION OF SNOW ALREADY ON THE
GROUND...ADDITIONAL SNOW OF 1 TO 2 INCHES IN THE SNAKE RIVER PLAIN
AND UP TO 10 INCHES IN THE MOUNTAINS... AND WINDS OF 35 TO 45 MPH WITH
GUSTS TO 50 MPH WILL MEAN DANGEROUS TRAVEL CONDITIONS. HEAVY
DRIFTING OF SNOW WILL CAUSE WIDESPREAD TEMPORARY ROAD CLOSURES.
BLOWING SNOW WILL REDUCE VISIBILITY TO NEAR ZERO...CREATING THE
DANGER KNOWN AS WHITEOUT CONDITIONS. THIS INCLUDES THE MAIN ROADS
OF INTERSTATE 15 TO MONIDA PASS AND U S ROUTE 20 FROM ARCO TO
TARGHEE PASS ON THE MONTANA-IDAHO BORDER.

THE PEAK DANGER TIME WILL BE IN THE AFTERNOON HOURS ON SUNDAY...
WHEN WINDS ARE EXPECTED TO BE THE STRONGEST IN THIS AREA.

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.

$$

IDZ018-031-301100-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
234 PM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A STRONG COLD FRONT WILL BRING HIGH WIND AND LIGHT TO MODERATE SNOW TO
THE MOUNTAINS OF CENTRAL IDAHO. IN THE SAWTOOTH AND WOOD RIVER
BASINS...EXPECT ADDITIONAL SNOW TOTALING 4 TO 10 INCHES. COMBINED
WITH THE HIGH WIND OF 35 TO 45 MPH WITH GUSTS TO 50 MPH...THE
RESULT WILL BE HEAVY DRIFTING OF THE SNOW AND NEAR ZERO VISIBILITY
IN BLOWING SNOW. THE STRONGEST WIND AND WORST CONDITIONS CAN BE
EXPECTED LATE SATURDAY NIGHT UNTIL AROUND SUNDAY NOON.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS
OR IMPOSSIBLE.

$$

IDZ017-021-022-301100-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...MALAD CITY...OAKLEY...
ROCKLAND
234 PM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A STRONG COLD FRONT WILL MOVE ACROSS SOUTHERN IDAHO LATE TONIGHT.
THIS STORM WILL BRING WINDS OF 35 TO 45 MPH WITH HIGHER GUSTS AND
1 TO 2 INCHES OF SNOW IN THE VALLEYS AND UP TO 8 INCHES IN THE MOUNTAINS.
WHILE THE SNOW AMOUNT IS ONLY MODERATE IN ACCUMULATION...WHEN
COMBINED WITH THE HIGH WIND...THE WEATHER CONDITIONS BECOME
DANGEROUS. HEAVY DRIFTING OF SNOW CAN CAUSE TEMPORARY ROAD
CLOSURES AND BLOWING SNOW CAN REDUCE VISIBILITY TO ZERO.

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

$$

IDZ023>025-301100-
/O.CON.KPIH.WS.W.0009.071230T0600Z-071231T0600Z/
CARIBOU HIGHLANDS-CACHE VALLEY/IDAHO PORTION-
WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DOWNEY...LAVA HOT SPRINGS...
SODA SPRINGS...WAYAN...PRESTON...DAYTON...MONTPELIER...
GEORGETOWN...PARIS
234 PM MST SAT DEC 29 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 11 PM MST SUNDAY. 

A STRONG COLD FRONT WILL BRING HIGH WIND AND LIGHT TO MODERATE SNOW TO
THE MOUNTAINS OF SOUTHEAST IDAHO. ADDITIONAL SNOW OF 4 TO 10 INCHES
WILL ACCUMULATE BY SUNDAY EVENING. IN ADDITION TO THE SNOW WILL
BE HIGH WINDS OF 35 TO 45 MPH WITH STRONGER GUSTS. THE COMBINATION
OF SNOW ALREADY ON THE GROUND...ADDITIONAL SNOW...AND HIGH WIND
WILL CAUSE HEAVY DRIFTING OF SNOW AND LOW VISIBILITY... NEAR ZERO
AT TIMES...IN BLOWING SNOW. THIS WILL LIKELY MEAN AT LEAST
TEMPORARY ROAD CLOSURES. PEOPLE PLANNING TRAVEL THROUGH EASTERN
IDAHO ON SUNDAY SHOULD PREPARE THEIR MOTOR VEHICLE FOR EXTREME
WINTER CONDITIONS. THE WORST TIME FOR THIS AREA SHOULD BE FROM
SUNDAY MID-MORNING UNTIL MIDNIGHT SUNDAY NIGHT.

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.

$$

IDZ032-301100-
/O.CON.KPIH.SB.Y.0005.071230T0600Z-071231T0600Z/
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...ARCO...CHALLIS...MACKAY
234 PM MST SAT DEC 29 2007

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 PM
THIS EVENING TO 11 PM MST SUNDAY...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT FROM 11 PM
THIS EVENING TO 11 PM MST SUNDAY. 

A STRONG COLD FRONT WILL PUSH THROUGH CENTRAL IDAHO LATE TONIGHT. AS IT
DOES...IT WILL PRODUCE SOME ADDITIONAL LIGHT SNOW...1 TO 6
INCHES...IN THE LOST RIVER AND PAHSIMEROI BASINS. IT WILL ALSO
BRING WIND IN EXCESS OF 30 MPH WITH HIGHER GUSTS. THIS WILL CAUSE
LOCALIZED HEAVY DRIFTING THAT MAY MAKE DRIVING DIFFICULT. EXPECT
LOW VISIBILITY IN BLOWING SNOW THAT COULD ALSO CAUSE SOME
LOCALIZED WHITEOUT CONDITIONS.

THE STRONGEST WIND...AND WORST CONDITIONS...SHOULD OCCUR FROM
VERY EARLY SUNDAY MORNING UNTIL THE EARLY AFTERNOON ON SUNDAY.

$$

000 
WWUS45 KPIH 301055
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
355 AM MST SUN DEC 30 2007

IDZ019-020-302300-
/O.CON.KPIH.BZ.W.0001.000000T0000Z-071231T0600Z/
UPPER SNAKE HIGHLANDS-UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY...IDAHO FALLS...REXBURG...RIGBY
355 AM MST SUN DEC 30 2007

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING. 

A POWERFUL STORM SYSTEM WILL BRING HIGH WINDS AND LIGHT TO
MODERATE AMOUNTS OF SNOW TO THE UPPER SNAKE RIVER PLAIN AND THE
UPPER SNAKE HIGHLANDS. THE COMBINATION OF SNOW ALREADY ON THE
GROUND...1 TO 4 INCHES IN THE VALLEYS AND BENCHES WITH UPWARDS OF
8 INCHES FOR THE MOUNTAINS...AND WINDS OF 35 TO 45 MPH WITH GUSTS
TO 50 MPH WILL MEAN DANGEROUS TRAVEL CONDITIONS. HEAVY DRIFTING OF
SNOW WILL CAUSE WIDESPREAD TEMPORARY ROAD CLOSURES. BLOWING SNOW
WILL REDUCE VISIBILITY TO NEAR ZERO...CREATING THE DANGER KNOWN AS
WHITEOUT CONDITIONS. THIS INCLUDES THE MAIN ROADS OF INTERSTATE 15
TO MONIDA PASS AND U S ROUTE 20 FROM ARCO TO TARGHEE PASS ON THE
MONTANA-IDAHO BORDER.

THE PEAK DANGER TIME WILL BE LATER IN THE MORNING INTO THE
AFTERNOON HOURS ON SUNDAY... WHEN WINDS ARE EXPECTED TO BE THE
STRONGEST IN THIS AREA.

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.

$$

IDZ018-031-302300-
/O.CON.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
355 AM MST SUN DEC 30 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

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

A POWERFUL STORM SYSTEM WILL BRING HIGH WIND AND LIGHT TO MODERATE
SNOW TO THE MOUNTAINS OF CENTRAL IDAHO. IN THE SAWTOOTH AND WOOD
RIVER BASINS...EXPECT SNOW TOTALING 4 TO 8 INCHES WITH LOCALLY
HIGHER AMOUNTS IN THE MOUNTAINS AND UP TO 4 INCHES IN THE
VALLEYS. THIS COMBINED WITH THE HIGH WIND OF 35 TO 45 MPH WITH
GUSTS TO 50 MPH...THE RESULT WILL BE HEAVY DRIFTING OF THE SNOW
AND NEAR ZERO VISIBILITY IN BLOWING SNOW. THE STRONGEST WIND AND
WORST CONDITIONS CAN BE EXPECTED AFTER SUNRISE LASTING INTO THE
AFTERNOON HOURS.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS
OR IMPOSSIBLE.

$$

IDZ017-021-022-302300-
/O.CON.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...MALAD CITY...OAKLEY...
ROCKLAND
355 AM MST SUN DEC 30 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

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

A POWERFUL STORM SYSTEM WILL MOVE ACROSS SOUTHERN IDAHO TODAY. THIS
STORM WILL BRING WINDS OF 35 TO 45 MPH WITH HIGHER GUSTS AND 1 TO
4 INCHES OF SNOW IN THE VALLEYS AND BENCHES WITH UPWARDS OF 6 INCHES
IN THE MOUNTAINS. WHILE THE SNOW AMOUNT IS ONLY MODERATE IN
ACCUMULATION...WHEN COMBINED WITH THE HIGH WIND...THE WEATHER
CONDITIONS BECOME DANGEROUS. HEAVY DRIFTING OF SNOW CAN CAUSE
TEMPORARY ROAD CLOSURES AND BLOWING SNOW CAN REDUCE VISIBILITY TO
ZERO.

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

$$

IDZ023>025-302300-
/O.CON.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
CARIBOU HIGHLANDS-CACHE VALLEY/IDAHO PORTION-
WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DOWNEY...LAVA HOT SPRINGS...
SODA SPRINGS...WAYAN...PRESTON...DAYTON...MONTPELIER...
GEORGETOWN...PARIS
355 AM MST SUN DEC 30 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

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

A STRONG COLD FRONT WILL BRING HIGH WIND AND LIGHT TO MODERATE
SNOW TO THE MOUNTAINS OF SOUTHEAST IDAHO. TOTAL SNOW OF 4 TO 8
INCHES WITH LOCALLY HIGHER AMOUNTS WILL ACCUMULATE BY SUNDAY
EVENING. IN ADDITION TO THE SNOW WILL BE HIGH WINDS OF 35 TO 45
MPH WITH STRONGER GUSTS. THE COMBINATION OF SNOW ALREADY ON THE
GROUND...ADDITIONAL SNOW...AND HIGH WIND WILL CAUSE HEAVY DRIFTING
OF SNOW AND LOW VISIBILITY... NEAR ZERO AT TIMES...IN BLOWING
SNOW. THIS WILL LIKELY MEAN AT LEAST TEMPORARY ROAD CLOSURES.
PEOPLE PLANNING TRAVEL THROUGH EASTERN IDAHO ON SUNDAY SHOULD
PREPARE THEIR MOTOR VEHICLE FOR EXTREME WINTER CONDITIONS. THE
WORST TIME FOR THIS AREA WILL BEGIN LATER IN THE MORNING INTO SUNDAY
EVENING.

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.

$$

IDZ032-302300-
/O.CON.KPIH.SB.Y.0005.000000T0000Z-071231T0600Z/
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...ARCO...CHALLIS...MACKAY
355 AM MST SUN DEC 30 2007

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING. 

A POWERFUL STORM SYSTEM WILL PUSH THROUGH CENTRAL IDAHO DURING
THE DAY. AS IT DOES...IT WILL PRODUCE TOTAL SNOW ACCUMULATIONS OF 1
TO 6 INCHES...IN THE LOST RIVER AND PAHSIMEROI BASINS. IT WILL
ALSO BRING WIND IN EXCESS OF 30 MPH WITH HIGHER GUSTS. THIS WILL
CAUSE LOCALIZED HEAVY DRIFTING THAT MAY MAKE DRIVING DIFFICULT.
EXPECT LOW VISIBILITY IN BLOWING SNOW THAT COULD ALSO CAUSE SOME
LOCALIZED WHITEOUT CONDITIONS.

THE STRONGEST WIND...AND WORST CONDITIONS...SHOULD OCCUR LATER
THIS MORNING INTO THE AFTERNOON HOURS.

$$

000 
WWUS45 KPIH 301754
WSWPIH

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
1054 AM MST SUN DEC 30 2007

IDZ019-310600-
/O.CAN.KPIH.BZ.W.0001.000000T0000Z-071231T0600Z/
/O.EXA.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
UPPER SNAKE HIGHLANDS-
INCLUDING THE CITIES OF...DRIGGS...DUBOIS...ISLAND PARK...
ST. ANTHONY
1054 AM MST SUN DEC 30 2007

...WINTER STORM WARNING IN EFFECT UNTIL 11 PM MST THIS EVENING...
...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING.
THE BLIZZARD WARNING HAS BEEN CANCELLED. 

STRONG WINDS BEHIND A COLD FRONT WILL CONTINUE TO PRODUCE AREAS OF
BLOWING SNOW SEVERELY REDUCING VISIBILITIES IN EXPOSED AREAS. IN
ADDITION...1 TO 4 INCHES OF SNOW MAY STILL FALL BEFORE CONDITIONS
IMPROVE LATE THIS EVENING. TRAVELING WILL BE VERY DIFFICULT AT TIMES
...AND ROAD CLOSURES CAN BE EXPECTED.

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

$$

IDZ020-310600-
/O.CAN.KPIH.BZ.W.0001.000000T0000Z-071231T0600Z/
/O.NEW.KPIH.BS.Y.0003.071230T1754Z-071231T0600Z/
UPPER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF...IDAHO FALLS...REXBURG...RIGBY
1054 AM MST SUN DEC 30 2007

...BLOWING SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING...
...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A BLOWING
SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING.
THE BLIZZARD WARNING HAS BEEN CANCELLED. 

STRONG WINDS BEHIND A COLD FRONT WILL CONTINUE TO PRODUCE AREAS OF
BLOWING SNOW SEVERELY REDUCING VISIBILITIES IN EXPOSED AREAS. TRAVELING
WILL BE VERY DIFFICULT AT TIMES...AND ROAD CLOSURES CAN BE
EXPECTED UNTIL CONDITIONS IMPROVE LATE THIS EVENING.

A BLOWING SNOW ADVISORY MEANS THAT GUSTY WINDS WILL GENERATE
AREAS OF REDUCED VISIBILITY DUE TO BLOWING SNOW.

$$

IDZ017-021-022-310600-
/O.CAN.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
/O.NEW.KPIH.BS.Y.0003.071230T1754Z-071231T0600Z/
EASTERN MAGIC VALLEY-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-
INCLUDING THE CITIES OF...BURLEY...RUPERT...SHOSHONE...CAREY...
POCATELLO...BLACKFOOT...AMERICAN FALLS...MALAD CITY...OAKLEY...
ROCKLAND
1054 AM MST SUN DEC 30 2007

...BLOWING SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A BLOWING
SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING.
THE WINTER STORM WARNING HAS BEEN CANCELLED. 

STRONG WINDS BEHIND A COLD FRONT WILL CONTINUE TO PRODUCE AREAS OF
BLOWING SNOW SEVERELY REDUCING VISIBILITIES IN EXPOSED AREAS. TRAVELING
WILL BE VERY DIFFICULT AT TIMES...AND ROAD CLOSURES CAN BE
EXPECTED UNTIL CONDITIONS IMPROVE LATE THIS EVENING.

A BLOWING SNOW ADVISORY MEANS THAT GUSTY WINDS WILL GENERATE
AREAS OF REDUCED VISIBILITY DUE TO BLOWING SNOW.

$$

IDZ018-031-310600-
/O.CON.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
SAWTOOTH MOUNTAINS-BIG AND LITTLE WOOD RIVER REGION-
INCLUDING THE CITIES OF...STANLEY...CLAYTON...HAILEY...KETCHUM...
BELLEVUE
1054 AM MST SUN DEC 30 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

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

STRONG WINDS BEHIND A COLD FRONT WILL CONTINUE TO PRODUCE AREAS OF
BLOWING SNOW SEVERELY REDUCING VISIBILITIES IN EXPOSED AREAS. IN
ADDITION...1 TO 2 INCHES OF SNOW MAY STILL FALL BEFORE CONDITIONS
IMPROVE THIS EVENING. TRAVELING WILL BE VERY DIFFICULT AT TIMES
...AND ROAD CLOSURES CAN BE EXPECTED.

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. THIS WILL MAKE TRAVEL VERY HAZARDOUS
OR IMPOSSIBLE.

$$

IDZ023>025-310600-
/O.CON.KPIH.WS.W.0009.000000T0000Z-071231T0600Z/
CARIBOU HIGHLANDS-CACHE VALLEY/IDAHO PORTION-
WASATCH MOUNTAINS/IDAHO PORTION-
INCLUDING THE CITIES OF...DOWNEY...LAVA HOT SPRINGS...
SODA SPRINGS...WAYAN...PRESTON...DAYTON...MONTPELIER...
GEORGETOWN...PARIS
1054 AM MST SUN DEC 30 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...

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

STRONG WINDS BEHIND A COLD FRONT WILL CONTINUE TO PRODUCE AREAS OF
BLOWING SNOW SEVERELY REDUCING VISIBILITIES TO NEAR ZERO IN EXPOSED
AREAS. IN ADDITION...1 TO 4 INCHES OF SNOW MAY STILL FALL BEFORE
CONDITIONS IMPROVE LATE THIS EVENING. TRAVELING WILL BE VERY
DIFFICULT AT TIMES ...AND ROAD CLOSURES CAN BE EXPECTED.

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.

$$

IDZ032-310600-
/O.CON.KPIH.SB.Y.0005.000000T0000Z-071231T0600Z/
LOST RIVER/PAHSIMEROI-
INCLUDING THE CITIES OF...ARCO...CHALLIS...MACKAY
1054 AM MST SUN DEC 30 2007

...SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING...

A SNOW AND BLOWING SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM
MST THIS EVENING. 

STRONG WINDS BEHIND A COLD FRONT WILL CONTINUE TO PRODUCE AREAS OF
BLOWING SNOW SHARPLY REDUCING VISIBILITIES IN EXPOSED AREAS. IN
ADDITION...1 TO 2 INCHES OF SNOW MAY STILL FALL BEFORE CONDITIONS
IMPROVE LATE THIS EVENING. TRAVELING WILL BE VERY DIFFICULT AT
TIMES ...AND ROAD CLOSURES CAN BE EXPECTED.



$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
255 PM MST FRI DEC 28 2007

.SHORT TERM...FRIDAY AFTERNOON THROUGH MONDAY. VERY PERSISTENT
WEATHER PATTERN ACROSS EASTERN IDAHO WILL CONTINUE THRU THE
WEEKEND WITH A STRONG WIND EVENT EXPECTED ON SUNDAY. CURRENT
ANALYSIS SHOWS CWA STILL UNDER WEST TO NORTHWEST FLOW ALOFT WITH
SEVERAL WEAK UPPER TROFS EMBEDDED WITHIN THE FLOW PATTERN.
MOISTURE ACCOMPANYING EACH OF THESE DISTURBANCES IS BROAD IN AREAL
COVERAGE BUT LOW IN AMOUNT OF PRECIPITABLE WATER...MAKING FOR
WIDESPREAD CLOUD COVER BUT ONLY LIGHT SNOWFALL. STRONGEST OF THE
TROFS BEGINNING TO TAKE SHAPE OUT OVER THE N. PACIFIC WITH VERY
TIGHT 500MB HEIGHT GRADIENT FROM 130W TO 170W. THIS SYSTEM WILL
CONTINUE TO PUSH EWD ON SAT AND ARRIVE IN CENTRAL ID LATE SAT
NIGHT. MODELS VERY CONSISTENT IN BRINGING 150 MPH JET CORE OVER
THE CWA ON SUNDAY...PROGRESSING IT FROM NORTH TO SOUTH ACROSS THE
REGION. COUPLING THE JET DYNAMICS WITH STRONG COLD AIR ADVECTION
ALOFT AND AN 8 TO 10 MB SURFACE PRESSURE GRADIENT SETS UP A HIGH
POSSIBILITY FOR A SIGNIFICANT WIND EVENT...PARTICULARLY OVER THE
SNAKE RIVER PLAIN...ON SUNDAY. CURRENT SNOWFALL ESTIMATES RANGE
FROM AROUND 6 INCHES IN THE CENTRAL MTNS TO ONLY 2 TO 4 INCHES IN
THE SNAKE PLAIN. THE CARIBOU AND WASATCH MTNS MAY SEE IN EXCESS OF
8 INCHES BY SUNDAY NIGHT. THE SNOW COMBINED WITH WINDS GUSTING 30
TO 45 MPH WILL PRODUCE WIDESPREAD BLOWING AND DRIFTING AND
LOCALLY WHITEOUT CONDITIONS ARE POSSIBLE IN MTN AREAS AND LIKELY
IN THE SNAKE PLAIN. SO HAVE ISSUED A WINTER STORM WATCH FOR ALL
ZONES BEGINNING 11PM SAT NIGHT.

SUNDAY SYSTEM MOVES INTO WY/UT DURING THE OVERNIGHT HOURS WITH
RESIDUAL LIGHT SNOWSHOWERS LINGERING IN THE UPPER SNAKE PLAIN AND
EASTERN HIGHLANDS UNTIL MIDDAY ON MONDAY. TEMPERATURES WILL
NOSEDIVE BEGINNING SUNDAY NIGHT AS MUCH COLDER AIRMASS WILL SETTLE
INTO THE AREA AFTER THE TROF AND JET CORE MOVE DOWNSTREAM. GOING
TEMPERATURES GRIDS WERE ALREADY HANDLING THE CHANGE QUITE
WELL...SO JUST MADE MINOR TWEAKS THERE.

WARANAUSKAS

.LONG TERM...MONDAY NIGHT THROUGH FRIDAY NIGHT...STRONG UPPER RIDGE
EXPECTED OVERHEAD FOR MIDWEEK. SFC HIGH AS STRONG AS 1050ISH
MB/STRONG SUBSIDENCE SHOULD LEAD TO STRONG VALLEY INVERSIONS
THROUGHOUT THE FCST AREA WITH THE EXCEPTION OF THE EASTERN MAGIC
VALLEY WHERE WINDS ARE CURRENTLY EXPECTED TO KEEP THE ATMOSPHERE
MIXED.  WHERE INVERSIONS ARE EXPECTED...DIURNAL TEMP CURVE WILL BE
SMALL AND EXPECT RATHER COLD TEMPERATURES WITH FRESH SNOWCOVER.
GRIDS REFLECT PATCHY FOG FOR AFOREMENTIONED VALLEY LOCALES AND WOULD
NOT BE SURPRISED IF AIR QUALITY ISSUES ARISE. TEMP FCST CALLS FOR
TEMPERATURES AT OR BELOW GUIDANCE AT THIS TIME. FOR THE
MTNS...DURING THIS TIME STRONG WAA WOULD LEAD TO SOME WARMING ABOVE
INVERSION LAYER.  GFS/EC/ENSEMBLES ALL PUSH RIDGE FAR ENOUGH EAST BY
THU PM TO ALLOW SOME CLOUDS TO RETURN. AM CONCERNED THAT MODELS MAY
BE HASTY IN PUSHING RIDGE EAST TOO QUICKLY WHICH SOMETIMES CAN
HAPPEN WITH A STRONG RIDGE IN PLACE. HEADING INTO NEXT WEEKEND...IT
APPEARS WESTERLIES WILL BRING MOISTURE BACK INTO THE REGION FOR AN
INCREASING CHC OF PRECIPITATION. KEYES

&&

.AVIATION...WNW FLOW ALOFT CONTINUES ACROSS EASTERN ID TODAY. QUITE
A VARIETY AGAIN TODAY WITH SNOW CONTINUING IN SOME
AREAS...ESPECIALLY UPSLOPE. WHERE SNOW HAS OCCURRED AND WILL OCCUR
INTO TONIGHT...MVFR/IFR CIGS AND VIS EXPECTED WITH SOME AREAS
DROPPING TO LIFR.  WHERE SNOW DOESNT FALL ESPECIALLY VALLEY
LOCALES...CROSS SECTIONS INDICATE A BKN TO OVC LOW STRATUS DECK ONCE
AGAIN DEVELOPING TONIGHT AND LASTING INTO THE DAY SAT. EXPECT A
SIMILAR DAY TOMORROW WX WISE AHEAD OF NEXT SYSTEM IN THE MTNS.
MODELS TRY OT SHOW A BETTER BREAK IN -SN ACROSS SNAKE PLAIN BUT WITH
WNW FLOW ALOFT WOULD NOT BE SURPRISED TO SEE -SN ONCE AGAIN
ESPECIALLY KPIH AND KIDA.  KSUN IN THIS TYPE PATTERN WILL REMAIN VFR
EXPECT FOR -SN/-SHSN MOVES THROUGH THE AREA. CURRENT TREND IS FOR
MORE WIDESPREAD -SN TO ARRIVE DURING THE AFTN THERE ON SAT.  THE BIG
STORY IS SNOW AND WIND SAT NIGHT AND SUN AS STRONG STORM SYSTEM
MOVES INTO EASTERN ID.  VERY STRONG WINDS EXPECTED AREAWIDE WITH
-SN/SN EXPECTED TO FALL...CREATING BLOWING AND DRIFTING SNOW AND
VERY LOW VIS AT TIMES.  KEYES

&&

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

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
515 AM MST FRI DEC 28 2007

IDZ017>025-031-032-291200-
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-
515 AM MST FRI DEC 28 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A LARGE STORM IS EXPECTED TO BRING LIGHT TO MODERATE AMOUNTS OF SNOW
ON SATURDAY NIGHT AND SUNDAY.  IN ADDITION...THE STORM WILL GENERATE
VERY WINDY CONDITIONS.  EXPECT 30 TO 40 MPH WIND ACROSS MUCH OF
CENTRAL AND EASTERN IDAHO FROM LATE SATURDAY NIGHT UNTIL SUNDAY
EVENING.  THE COMBINATION OF FRESH SNOW AND HIGH WIND WILL MEAN
HEAVY DRIFTING OF SNOW AND LOW VISIBILITY IN BLOWING SNOW.  TRAVEL
MAY BE DANGEROUS DURING THE TIME OF THIS STORM AND IS NOT
RECOMMENDED.  PERSONS EXPECTING TO TRAVEL AT THIS TIME SHOULD KEEP
UP ON EXPECTED WEATHER CONDITIONS PRIOR TO DEPARTURE.

.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.