Area Forecast Discussion
Issued by NWS Pocatello, ID

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
000
FXUS65 KPIH 301930
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
130 PM MDT TUE SEP 30 2014

.SHORT TERM...TONIGHT THROUGH FRIDAY.

A COLD FRONT IS MOVING ACROSS EAST IDAHO THIS AFTERNOON. SHOWERS AND
A FEW THUNDERSTORMS WILL PERSIST AHEAD OF THE FRONT. EXPECT A
CONVERGENCE EVENT TO WORK DOWN THE SNAKE PLAIN THIS EVENING AND
THROUGH THE OVERNIGHT HOURS. THIS WILL PRODUCE A SECOND ROUND OF
ISOLATED TO SCATTERED SHOWERS ACROSS THE SNAKE PLAIN TONIGHT.
RAINFALL AMOUNTS WITH THIS SECOND BATCH OF SHOWERS SHOULD BE
RELATIVELY LIGHT...GENERALLY A TENTH OF AN INCH OR LESS. ON
WEDNESDAY...A SECONDARY COLD FRONT WILL MOVE THROUGH EAST IDAHO AND
PRODUCED CONTINUED CHANCES FOR SCATTERED LIGHT RAIN SHOWERS...MAINLY
ALONG THE EASTERN HIGHLANDS. DRIER WEATHER WILL ARRIVE WEDNESDAY
NIGHT. TEMPERATURES COULD BE COLD ENOUGH THURSDAY MORNING FOR A
POTENTIAL FROST/FREEZE SITUATION. HOWEVER WINDS WILL LIKELY STAY UP
SOME WHICH COULD KEEP THE BOUNDARY LAYER SOMEWHAT MIXED...PREVENTING
TEMPS FROM FALLING DRASTICALLY. MENTIONING PATCHY FROST FOR
NOW...WILL CONTINUE TO MONITOR FOR POSSIBLE WARNINGS/ADVISORIES.
EXPECT WARMER AND DRY CONDITIONS FOR FRIDAY AS A RIDGE OF HIGH
PRESSURE BUILDS INTO THE AREA.

VALLE

.LONG TERM...FRIDAY NIGHT THROUGH TUESDAY.

QUIESCENT CONDITIONS ARE EXPECTED TO PERSIST THROUGH
THE EXTENDED AS A BROAD RIDGE REMAINS IN PLACE OVER THE WESTERN
CONUS. AS A RESULT...DRY CONDITIONS WERE MAINTAINED THROUGH THE
PERIOD. TEMPERATURES WILL AVERAGE SLIGHTLY ABOVE SEASONAL NORMS
UNDER THIS REGIME.

AD

&&

.AVIATION...CLOUDS WILL DECREASE AND NO RETURN OF STRATUS OR FOG IS
EXPECTED WITH THIS DRIER AIRMASS...AIDED BY A BREEZY BOUNDARY LAYER.
THIS IS DESPITE QUITE A BIT OF STANDING WATER...SO THE POTENTIAL FOR
STRATUS DEVELOPMENT IS NOT ZERO...JUST HIGHLY UNLIKELY AT THIS TIME.
WIND WILL SUBSIDE SLIGHTLY DURING THE OVERNIGHT AND RETURN TO GUSTY
CONDITIONS AGAIN WED AFTERNOON...FORTUNATELY WITH LITTLE CROSS-WIND
COMPONENT FOR THE MAJOR RUNWAY DIRECTIONS. MESSICK

&&

.FIRE WEATHER...NOTE TO OUR CUSTOMERS...THE FIRE WEATHER PROGRAM
WILL BE REDUCED FROM TWO FORECASTS PER DAY TO ONE PLANNING FORECAST
ISSUED IN THE MORNING STARTING OCTOBER 1. LOW PRESSURE CONTINUES TO
BE SLOW TO MOVE EASTWARD AND A SECOND WEAKER COLD FRONT WILL PASS
THROUGH DURING THE OVERNIGHT HOURS...BRINGING SOME ISOLATED TO
SCATTERED SHOWERS TO THE FIRE WEATHER DISTRICT. BY WED MORNING...DRY
AND COLD AIR WILL HAVE REPLACED THE MOIST AIR MASS CURRENTLY OVER
EASTERN IDAHO. HIGH PRESSURE WILL HAVE REPLACED THE LOW...AND
WEATHER FOR THE REMAINDER OF THE WEEK WILL BE DRY AND NEARLY CLOUD
FREE. THIS WILL ALLOW A WARM UP...BUT EVEN VALLEY TEMPERATURES WILL
ONLY BE IN THE LOWER 70S WITH AFTERNOON HUMIDITY STAYING IN THE 20
TO 30 PERCENT RANGE. AFTER THE FRONTS EXPECTED THIS AFTERNOON AND
TONIGHT...WINDS WILL BE LESS GUSTY ON WED AND THU...THEN LIGHT AND
VARIABLE WINDS FOR MOST OF THE REST OF THE SEVEN DAY PERIOD.
MESSICK

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.