Flood Watch 2, NWS Pocatello, ID

649 
WGUS65 KPIH 291516
FFAPIH

FLOOD WATCH
NATIONAL WEATHER SERVICE POCATELLO ID
816 AM MST FRI JAN 29 2016

IDZ019-023-291630-
/O.CAN.KPIH.FA.A.0002.160129T2300Z-160130T0700Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
UPPER SNAKE HIGHLANDS-CARIBOU HIGHLANDS-
INCLUDING THE CITIES OF...ST. ANTHONY...ASHTON...DRIGGS...VICTOR
816 AM MST FRI JAN 29 2016

...FLOOD WATCH IS CANCELLED...

THE FLOOD WATCH FOR PORTIONS OF IDAHO HAS BEEN CANCELLED. SNOW
LEVELS BETWEEN 5500 AND 6000 MSL ARE NOT EXPECTED TO CAUSE
SIGNIFICANT RUNOFF ACROSS THE EASTERN IDAHO MOUNTAINS. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
334 AM MST THU JAN 28 2016

.SHORT TERM...TODAY THROUGH SATURDAY NIGHT. QUIET WEATHER IS
EXPECTED FOR TODAY WITH SOME AREAS OF PATCHY FOG OVER THE
MONTANA BORDER REGION AND ACROSS PORTIONS OF THE SNAKE PLAIN.
THIS FOG SHOULD BURN OFF BY MID-MORNING.

ATTENTION THEN TURNS TO TWO STORM SYSTEMS THAT WILL HAVE
A SIGNIFICANT IMPACT ON OUR SENSIBLE WEATHER ACROSS SOUTHEAST
IDAHO. THE FIRST BAND OF SNOWFALL IS EXPECTED TO BEGIN THIS
EVENING ACROSS THE CENTRAL MOUNTAINS AND OVERSPREAD ALL OF
SOUTHEAST IDAHO OVERNIGHT. THIS SNOW WILL DIMINISH FRIDAY
MORNING...WITH A FEW SNOW SHOWERS LINGERING ACROSS THE EASTERN
HIGHLANDS. A GENERAL 1 TO 3 INCHES OF SNOW IS EXPECTED WITH THIS
FIRST WAVE.

THE SECOND AND MORE IMPACTFUL WAVE OF PRECIPITATION WILL BEGIN
FRIDAY MORNING ACROSS THE EASTERN MAGIC VALLEY AND CENTRAL
MOUNTAINS...OVERSPREADING ALL OF SOUTHEAST IDAHO BY MID-AFTERNOON.
WARMER AIR WILL BE ASSOCIATED WITH THIS SECOND SYSTEM...SO EXPECT
MAINLY RAIN FOR THE EASTERN MAGIC VALLEY WITH SNOW OR A RAIN/SNOW
MIX ACROSS THE SOUTHERN SNAKE PLAIN CHANGING TO MAINLY RAIN.
ACROSS THE UPPER SNAKE PLAIN...EXPECT SNOW OR A RAIN/SNOW MIX. MAY
SEE A BRIEF PERIOD OF FREEZING RAIN ACROSS THE EASTERN MAGIC
VALLEY AND PORTIONS OF THE SOUTHERN HIGHLAND VALLEYS LATE FRIDAY
MORNING. ALL SNOW IS EXPECTED FOR THE CENTRAL MOUNTAINS AND THE
EASTERN AND SOUTHERN HIGHLANDS. A STRONG COLD FRONT WILL SWEEP
ACROSS THE REGION FRIDAY EVENING...CAUSING TEMPERATURES TO RAPIDLY
DROP BELOW FREEZING ACROSS THE AREA AND ANY LINGERING RAIN TO
CHANGE TO SNOW. THIS MAY CREATE ICY CONDITIONS. IN
ADDITION...WINDS WILL INCREASE INTO THE 30-40 MPH RANGE FOR MANY
AREAS BY FRIDAY EVENING...CREATING HAZARDOUS TRAVEL ALONG WITH
BLOWING AND DRIFTING SNOW FOR AREAS THAT RECEIVE NEW SNOWFALL.
THERE IS ALSO THE POTENTIAL FOR SOME PONDING OF WATER ON TOP OF
FROZEN SOILS AND EXISTING SNOWPACK ACROSS PORTIONS OF THE UPPER
SNAKE PLAIN AND HIGHLAND VALLEYS OF THE EASTERN AND SOUTHERN
HIGHLANDS FRIDAY AFTERNOON WITH THE BRIEF SURGE OF WARMER
TEMPERATURES AND RAINFALL. HAVE INCREASED SNOWFALL TOTALS ACROSS
THE EASTERN AND SOUTHERN HIGHLANDS AND HAVE CHANGED AMOUNTS LITTLE
ACROSS THE CENTRAL MOUNTAINS. SEE WINTER WEATHER PRODUCT FOR A
DESCRIPTION OF AMOUNTS. FOR SATURDAY SNOW SHOWERS WILL LINGER
ACROSS PORTIONS OF THE CENTRAL MOUNTAINS AND EASTERN AND SOUTHERN
HIGHLANDS ALONG WITH MUCH COLDER TEMPERATURES. AD/RS

.LONG TERM...SUNDAY THROUGH WEDNESDAY.  GFS AND EUROPEAN MODELS
AGREE IN TRACKING THE SOUTHERN STREAM STORM SYSTEM SOUTH OF
IDAHO...AND ACROSS THE GREAT BASIN AND FOUR CORNERS AREA SUNDAY AND
MONDAY. THE NORTHERN STREAM ENERGY IN CANADA WILL CONTRIBUTE TO
SCATTERED SNOW SHOWERS IN THE EASTERN HIGHLANDS MONDAY NIGHT AND
TUESDAY WITH SOME LOCAL 1 TO 2 INCH ACCUMULATIONS POSSIBLE. THE
EUROPEAN MODEL BRINGS ANOTHER DISTURBANCE ACROSS SOUTHERN IDAHO BY
THURSDAY WHICH AT THE MOMENT THE GFS DOES NOT SUPPORT. TEMPERATURES
DO REMAIN BELOW NORMAL THROUGH THE WEEK WITH TEENS TO MIDDLE 20S IN
THE SNAKE PLAIN AND LOWER VALLEYS. RS

&&

.AVIATION...VERY PATCHY FOG THIS MORNING AT KIDA AND KPIH AND THIS
SHOULD DISSIPATE BY 16Z. STORM SYSTEM COMING IN SHOULD REACH KSUN BY
29/03Z WITH SNOW LOWERING CEILINGS TO LIFR...KBYI FOLLOWS ABOUT
29/04Z AND KIDA AND KPIH BY 29/06Z. THIS STORM SYSTEM WILL BE IN TWO
PARTS...A FEW HOURS BREAK FRIDAY MORNING. FRIDAY SNOW LEVELS RISE TO
5500-6000 FEET MSL. MODELS SUGGEST A FAIRLY POTENT FRONT FRIDAY
EVENING...FOLLOWED BY TEMPERATURES DROPPING RAPIDLY. A VERY FAST
FREEZE WILL FOLLOW THIS FRONT ALONG WITH STRONG WINDS UP TO 30
KTS. RS

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FLOOD WATCH FROM FRIDAY MORNING THROUGH FRIDAY AFTERNOON FOR
IDZ019-023-025.

WINTER STORM WATCH FROM THIS EVENING THROUGH SATURDAY AFTERNOON
FOR IDZ019-022-023-025.

WINTER STORM WATCH FROM THIS AFTERNOON THROUGH SATURDAY MORNING
FOR IDZ018-031.

&&