HAZARDOUS WEATHER OUTLOOK
Issue Date: 603 AM MST TUE DEC 15 2009
Expiration: 615 AM MST WED DEC 16 2009

Expires:200912161315;;
FLUS45 KBOI 151303
HWOBOI
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BOISE ID
603 AM MST TUE DEC 15 2009
IDZ012-014-016-028-029-161315-
LOWER TREASURE VALLEY ID-UPPER TREASURE VALLEY-
WESTERN MAGIC VALLEY-CAMAS PRAIRIE-OWYHEE MOUNTAINS-
603 AM MST TUE DEC 15 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
IDAHO AND SOUTHWEST IDAHO.
.DAY ONE...TODAY AND TONIGHT
A WINTER WEATHER ADVISORY IS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON. SNOW WILL MIX WITH RAIN TODAY...EXPECT SNOW
ACCUMULATIONS OF 2 TO 4 INCHES IN THE VALLEYS WITH 3 TO 7 INCHES
ALONG THE FOOTHILLS. THIS SYSTEM IS VERY DYNAMIC AND RAPIDLY CHANGING
...THEREFORE IT IS LIKELY THAT FURTHER UPDATES WILL BE NECESSARY
LATER TODAY...FOR THE LATEST UPDATES...LISTEN TO NOAA WEATHER
RADIO OR CHECK ONLINE AT WWW.WEATHER.GOV.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS SHOULD REPORT SIGNIFICANT WEATHER IN ACCORDANCE WITH
ESTABLISHED PROCEDURES.
$$

WINTER WEATHER ADVISORY
Issue Date: 432 AM MST TUE DEC 15 2009
Expiration: 500 PM MST TUE DEC 15 2009

...WINTER STORM TO AFFECT SOUTHEASTERN OREGON AND SOUTHWESTERN
IDAHO TODAY AND INTO TONIGHT...
A STRONG PACIFIC STORM ASSOCIATED WITH AN IMPRESSIVE STREAM OF
PACIFIC MOISTURE IS MOVING INLAND THIS MORNING. THE STORM HAS
BEGUN TO SPREAD SNOW INTO SOUTHEASTERN OREGON AND THE MOUNTAINS OF
SOUTHWEST IDAHO. SNOW WILL SPREAD INTO THE LOWER ELEVATIONS
THROUGH THE MORNING HOURS.
THE MAIN COMPLICATION WITH THIS STORM IS THAT THE SNOW WILL
CHANGE TO RAIN AT LOWER ELEVATIONS THIS AFTERNOON...BUT NOT
BEFORE MODERATE TO HEAVY SNOW FALLS OVER MUCH OF THE FORECAST
AREA. HEAVY SNOW WILL CONTINUE IN THE MOUNTAINS INTO TONIGHT.
IDZ012-014-016-028-151900-
/O.EXT.KBOI.WW.Y.0022.091215T1400Z-091216T0000Z/
LOWER TREASURE VALLEY ID-UPPER TREASURE VALLEY-
WESTERN MAGIC VALLEY-CAMAS PRAIRIE-
432 AM MST TUE DEC 15 2009
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
THE WINTER WEATHER ADVISORY FOR SNOW IN THE LOWER TREASURE VALLEY...
THE UPPER TREASURE VALLEY...THE WESTERN MAGIC VALLEY...AND ON THE
CAMAS PRAIRIE OF SOUTHWEST IDAHO...IS NOW IN EFFECT UNTIL 5 PM MST
THIS AFTERNOON.
* SNOW AMOUNTS...2 TO 4 INCHES IN THE VALLEYS WITH 3 TO 7 INCHES
ALONG THE FOOTHILLS. THERE WILL BE SHARP GRADIENTS IN THE
SNOWFALL AS THE SNOW CHANGES TO RAIN THIS AFTERNOON.
* SNOW LEVELS...SURFACE...RISING TO 3500 FEET THIS AFTERNOON.
* WINDS...SOUTHEAST 10 TO 20 MPH.
* TIMING...THROUGH THIS AFTERNOON.
* IMPACTS...ALL ROADS WILL BECOME SNOW COVERED LATER THIS MORNING
AND INTO THE AFTERNOON...INCLUDING I-84 AND HIGHWAYS 20...75
...AND 93.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.
$$

WINTER STORM WARNING
Issue Date: 831 PM MST MON DEC 14 2009
Expiration: 1100 PM MST TUE DEC 15 2009

...WINTER STORM TO AFFECT SOUTHEASTERN OREGON AND SOUTHWESTERN
IDAHO TUESDAY...
A STRONG PACIFIC STORM ASSOCIATED WITH AN IMPRESSIVE STREAM OF
PACIFIC MOISTURE WAS MOVING INLAND ALONG THE WEST COAST MONDAY
EVENING. THE STORM WILL SPREAD SNOW INTO SOUTHEASTERN OREGON AFTER
MIDNIGHT AND INTO IDAHO AROUND DAWN ON TUESDAY MORNING. SNOW WILL
CHANGE TO RAIN AT LOWER ELEVATIONS TUESDAY AFTERNOON...BUT NOT
BEFORE HEAVY SNOW FALLS OVER MUCH OF THE FORECAST AREA OF
SOUTHEAST OREGON AND SOUTHWEST IDAHO. HEAVY SNOW WILL CONTINUE IN
THE MOUNTAINS INTO TUESDAY EVENING.
IDZ011-013-029-033-151400-
/O.EXT.KBOI.WS.W.0008.091215T1200Z-091216T0600Z/
WEST CENTRAL MOUNTAINS-BOISE MOUNTAINS-OWYHEE MOUNTAINS-
UPPER WEISER RIVER-
831 PM MST MON DEC 14 2009
...WINTER STORM WARNING NOW IN EFFECT FROM 5 AM TO 11 PM MST
TUESDAY...
THE WINTER STORM WARNING FOR HEAVY SNOW IN THE WEST CENTRAL
MOUNTAIN AND BOISE MOUNTAINS IS NOW IN EFFECT FROM 5 AM TO 11 PM
MST TUESDAY.
* SNOW AMOUNTS...8 TO 12 INCHES OF SNOW.
* SNOW LEVELS...AT THE SURFACE TUESDAY MORNING RISING TO AROUND
4000 FEET TUESDAY AFTERNOON.
* TIMING...EARLY TUESDAY MORNING CONTINUING THROUGH TUESDAY.
* IMPACTS...HEAVY SNOW WHICH WILL MAKE DRIVING DIFFICULT AND
DANGEROUS ALONG HIGHWAYS 55... 95 AND 71.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW MEANS THAT SIGNIFICANT
AMOUNTS OF SNOW 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.
$$

WINTER WEATHER ADVISORY
Issue Date: 153 PM MST MON DEC 14 2009
Expiration: 200 PM MST TUE DEC 15 2009

...A NEW STORM IS APPROACHING THE REGION...
.A STRONG STORM WITH ABUNDANT MOISTURE IS APPROACHING THE PACIFIC
NORTHWEST. THIS STORM IS ALSO TAKING AIM ON SOUTHEAST OREGON AND
SOUTHWEST IDAHO...WHEREAS THE PREVIOUS STORM PASSED MAINLY TO OUR
SOUTH. THIS STORM SYSTEM IS WARMER...RELATIVELY SPEAKING...THAN
OUR PREVIOUS STORM. SNOW WILL CHANGE TO RAIN AT LOWER ELEVATIONS
TUESDAY AFTERNOON...BUT NOT BEFORE HEAVY SNOW FALLS OVER MUCH OF
THE FORECAST AREA OF SOUTHEAST OREGON AND SOUTHWEST IDAHO.
IDZ012-014>016-028-030-ORZ063-151200-
/O.NEW.KBOI.WW.Y.0022.091215T1200Z-091215T2100Z/
LOWER TREASURE VALLEY ID-UPPER TREASURE VALLEY-
SOUTHWEST HIGHLANDS-WESTERN MAGIC VALLEY-CAMAS PRAIRIE-
SOUTHERN TWIN FALLS COUNTY-MALHEUR COUNTY-
153 PM MST MON DEC 14 2009 /1253 PM PST MON DEC 14 2009/
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM MST /4 AM PST/ TO
2 PM MST /1 PM PST/ TUESDAY...
THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A WINTER WEATHER
ADVISORY FOR MALHEUR COUNTY OREGON...THE UPPER AND LOWER TREASURE
VALLEY OF IDAHO...SOUTHWEST HIGHLANDS...SOUTHERN TWIN FALLS
COUNTY...WESTERN MAGIC VALLEY AND CAMAS PRAIRIE FOR MODERATE SNOW
...WHICH IS IN EFFECT FROM 5 AM MST /4 AM PST/ TO 2 PM MST /1 PM
PST/ TUESDAY.
* SNOW AMOUNTS...2 TO 5 INCHES OF SNOW WITH UPWARDS OF 4 TO 7
INCHES IN THE CAMAS PRAIRIE AND SOUTHWEST HIGHLANDS ..AND
NORTHERN MALHEUR COUNTY OREGON. THE AREA AROUND BOISE MAY SEE
ONLY ABOUT TWO INCHES.
* SNOW LEVELS...SURFACE THEN RISING TO 3500 FEET BY TUESDAY
AFTERNOON.
* WINDS...LIGHT WINDS BECOMING SOUTHEAST 10 TO 20 MPH OVERNIGHT.
* TIMING...EARLY TUESDAY MORNING THROUGH MID TUESDAY AFTERNOON.
* IMPACTS...MODERATE SNOW FALLING ALONG THE I-84 CORRIDOR DURING
MORNING COMMUTE TIME TUESDAY. AREAS OF FOG WITH POOR VISIBILITY.
SNOW AND ICY HIGHWAYS 20...51 AND 95 SOUTH TO THE NEVADA STATE
LINE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.
$$

WINTER STORM WATCH
Issue Date: 155 PM MST SUN DEC 13 2009
Expiration: 1100 PM MST TUE DEC 15 2009

...A NEW STORM APPROACHING THE REGION...
.ANOTHER PACIFIC STORM SYSTEM IS DEVELOPING WEST OF CALIFORNIA
AND OREGON. THIS ONE LOOKS LIKE IT WILL BRING HEAVY PRECIPITATION
FARTHER NORTH INTO NORTHERN CALIFORNIA AND OREGON...EVENTUALLY
PUSHING EAST INTO THE BLUE MOUNTAINS...STEENS AND WALLOWA
MOUNTAINS OF OREGON...AND ALSO THE MOUNTAINS OF SOUTHWEST IDAHO
BY TUESDAY. THIS SYSTEM IS WARMER THAN THE LAST ONE AND WILL BE
ELEVATION DRIVEN AS TO HOW MUCH SNOW OCCURS AND WHEN. IT IS STILL
TOO EARLY TO FORECAST SPECIFIC DETAILS BUT POTENTIAL EXISTS FOR
HEAVY MOUNTAIN SNOW EARLY THIS WEEK.
IDZ011-013-029-141200-
/O.NEW.KBOI.WS.A.0009.091215T1200Z-091216T0600Z/
WEST CENTRAL MOUNTAINS-BOISE MOUNTAINS-OWYHEE MOUNTAINS-
155 PM MST SUN DEC 13 2009
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH
TUESDAY EVENING...
THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A WINTER STORM
WATCH FOR THE WEST CENTRAL MOUNTAINS...OWYHEE MOUNTAINS AND BOISE
MOUNTAINS...WHICH IS IN EFFECT FROM TUESDAY MORNING THROUGH LATE
TUESDAY NIGHT.
* SNOW AMOUNTS...POTENTIAL EXISTS FOR HEAVY MOUNTAIN SNOW.
* SNOW LEVELS...RISING THROUGH THE EVENT AS WARMER AIR WORKS IN.
* TIMING...TUESDAY MORNING THROUGH LATE TUESDAY NIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.
$$