Hail in Idaho, July 2, 2004

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
330 AM MDT FRI JUL 2 2004

.DISCUSSION...
SOUTHERLY FLOW ALOFT WILL TRANSITION TO A WESTERLY FLOW WITH A
SHALLOW S/WV SLIDING ACROSS E ID LATE THIS AFTN. NORTHERN STREAM
WILL SAG SOUTH INTO FCST/A OVER THE NEXT 24 HRS. THIS WILL RESULT IN
INCREASING PWS AS MOISTURE TO OUR WEST SHIFTS EAST. TODAYS
INSTABILITY LOOKS MEAGER WITH NO JET DYNAMICS AND ONLY MARGINAL
COOLING ALOFT AS SHALLOW 5H TROF SLIDES ACROSS AREA. HOWEVER... ANY
TSTMS THAT DO DEVELOP SHOULD BE WET. ACTIVITY SHOULD BE MORE
WIDESPREAD (ESPECIALLY CENTRAL MTNS) SAT AFTN AS A STRONGER S/WV
PUSHES ACROSS AREA AND INTERACTS WITH HIGH PWS OVER CWA. IN
ADDITION...VERY WEAK SFC FRONT ALSO SLIDES ACROSS AREA SAT AFTN.
NORTHWEST FLOW ALOFT OVERTAKES AREA ON SUNDAY WITH CONTINUED LOW CHC
POPS. POTENT S/WV AND ASSOCIATED COLD FRONT SLIDES ACROSS EASTERN ID
SUNDAY NIGHT. HAVE LOWERED SFC TEMPS FOR BOTH SUNDAY AND MONDAY FOR
THIS SCENARIO. MAINLY DRY FOR MON-TUE AS FLAT RIDGE BUILDS INTO
REGION. THE EXCEPTION WITH BE ZONES 19 WHERE UPSLOPE CONVECTION MAY
OCCUR. X-GFS ADVERTISING FULL LATITUDE TROF TO PUSH INTO ID LATE IN
THE WEEK. NO CHANGES MADE TO EXTENDED ATTM. WILL BE INTERESTING TO
SEE IF THE GFS TRENDS TOWARD LESS AMPLITUDE WITH THIS FEATURE.

WINTHER

&&

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
600 AM MDT FRI JUL 02 2004

IDZ017>023-031-032-031200-
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-
600 AM MDT FRI JUL 02 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO

.DAY ONE...
ISOLATED THUNDERSTORMS WILL DEVELOP ACROSS THE REGION THIS
AFTERNOON. LOCALLY HEAVY RAINFALL WILL BE THE MAJOR THREAT DUE TO
THE SLOW MOVEMENT OF THE THUNDERSTORMS ACROSS THIS AREA.

.DAYS TWO THROUGH SEVEN...
SCATTERED AFTERNOON THUNDERSTORMS WILL REMAIN IN THE FORECAST FOR
MUCH OF THE AREA THROUGH SUNDAY...DEVELOPING PRIMARILY IN THE HIGHER
TERRAIN.  CLOUD TO GROUND LIGHTNING...ISOLATED HAIL...AND SPOTTY
HEAVY RAINS WILL BE THE MAIN THREAT.

SPOTTER INFORMATION STATEMENT...
WE ASK ALL TRAINED SPOTTERS TO REPORT SIGNIFICANT WEATHER
CONDITIONS. THIS WOULD INCLUDE ALL HAIL...WIND AND HEAVY RAIN
REPORTS.  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.