Severe Thunderstorm Warning 17, NWS Pocatello, ID

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
240 PM MDT FRI JUN 4 2004

.DISCUSSION...
LATEST SATELLITE IMAGERY SHOWING CONVECTION FIRING ALONG SOUTHERN
EXPOSURE TO CNTRL MOUNTAINS AND NEAR WYOMING BORDER THIS AFTERNOON.
VIGOROUS 300 MB WAVE THAT AIDED IN THE SEVERE THUNDERSTORM ACTIVITY
YESTERDAY HAS CLEARED EAST INTO NW COLORADO. EARLY MORNING SOUNDINGS
FROM ELKO INDICATED DRIER CONDITIONS IN LOWER LEVELS AND LESS
INSTABILITY WHEREAS THE SALT LAKE SOUNDING CAME IN WITH ELEVATED
MOISTURE IN THE BOUNDARY LAYER PRODUCING A CAPE CLOSE TO 2000 J/KG.
LATEST MESO-ETA CONTINUES TO SHOW 500 MB REFLECTION OF YESTERDAYS
WAVE POSITIONED OVER SNAKE PLAINS AND THIS REALLY NOT VISIBLE IN
SATELLITE IMAGERY. SURFACE ANALYSIS PLACES TROUGH AXIS ON A NE
WYOMING TO SALT LAKE CITY LINE WHERE STRONG THUNDERSTORMS ARE
ALREADY DEVELOPING THIS AFTERNOON.  MESO-ETA DRIVES 500 MB WAVE ENE
ACROSS FORECAST AREA THIS AFTERNOON WITH INCREASING STABILITY FROM
WEST TO EAST BEHIND WAVE THIS EVENING. WILL CONTINUE MENTION OF
EVENING CONVECTION IN AFOREMENTIONED AREAS KEEPING SW PORTION OF
FORECAST AREA DRY.  MODELS CONTINUE WITH IDEA OF LIFTING NEGATIVE
TILT TROUGH THROUGH WASHINGTON/IDAHO PANHANDLE SATURDAY AS SE
IDAHO REMAINS RATHER DRY. WILL CONTINUE WITH A SLIGHT CHANCE MENTION
OF CONVECTION ACROSS THE CNTRL MOUNTAINS SATURDAY THROUGH MONDAY AS
FORECAST AREA REMAINS ON PERIPHERY OF ADVANCING GULF LOW. LOW SHIFTS
EAST ACROSS SRN CANADA SUNDAY AND THEN LIFTS NE INTO CNTRL CANADA
MONDAY/TUESDAY AS SECONDARY PACIFIC SHORT-WAVE ENERGY DIGS SHARPLY
SE INTO NW STATES SPINNING UP A CLOSED LOW CIRCULATION OVER SW IDAHO
BY TUESDAY MORNING.  THE LOW REMAINS ANCHORED OVER SW IDAHO THROUGH
WEDNESDAY BEFORE LIFTING NE INTO MONTANA SOMETIME THURSDAY.  THUS
HAVE BROAD BRUSHED GRIDS/FORECAST WITH SLIGHT CHANCE POPS UNTIL LOW
CLEARS AREA SOMETIME FRIDAY AFTERNOON. HUSTON
&&

.PIH WATCHES/WARNING/ADVISORIES...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
500 AM MDT FRI JUN 4 2004

IDZ017>023-031-032-051200-
EASTERN MAGIC VALLEY-BIG AND LITTLE WOOD RIVER REGION-
SAWTOOTH MOUNTAINS-LOST RIVER/PAHSIMEROI-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
500 AM MDT FRI JUN 4 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO

.DAY ONE...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
WE ASK ALL TRAINED SPOTTERS TO REPORT SIGNIFICANT WEATHER
CONDITIONS. THIS INFORMATION SHOULD BE CALLED INTO THE LOCAL
NATIONAL WEATHER SERVICE OFFICE IN POCATELLO USING THE 1-800 SEVERE
WEATHER HOTLINE...OR OTHER STANDARD OPERATING PROCEDURES.