Flash Flood Warning 9, NWS Spokane, WA

EASTERN WASHINGTON AND NORTH IDAHO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WASHINGTON
100 PM PST TUE DEC 31 1996

APPEAR THAT MDLS ARE A LTL SLOW AND WEST WITH PLACEMENT OF BIG SYS
MOVG ONSHR.  WITH LONG FETCH OF MSTR FEEDING INTO SYS.. THE MDLS MAY
UNDERESTIMATE THE AMNT OF RAINFALL THE RGN ACTUALLY RECEIVES.  FCST
AREA FIRST GETS THE WARM AIR ADV RAIN WITH STG SLY FLOW WITHIN THE
LWR LVLS.. THEN STG JET DYNAMICS AND SPEED SHEAR AS JET NOSES ITS WAY
INTO ERN WA FROM THE SW.  KGEG MAY RECEIVE NRLY AN INCH OF RAIN BY
01/18Z WITH AS MUCH AS THREE INCHES LIKE KS06 IN THE ID PNHDL.
QPFPFD HAS COMPARED THIS MSTR PLUME AND DYNAMICS WITH THE JAN 9/10
AND MAR 10/11 1995 EVENTS.. THEREFORE WILL NOT BY SHY ABOUT RAINFALL
AMOUNTS.  WITH LOWLAND FLOODING OCCURRING AT A FEW AREAS.. WILL
UPGRADE URBAN AND SMALL STREAM FLOOD ADVY TO WARNING.  SW WND WILL
INCR AS WELL FOR WINDY CONDS THRU WED.

JET SAGS TO THE SOUTH OF RGN WED AFTN WITH MINOR IMPULSES IN SWLY
FLOW.  MDLS WILL BE HAVING TIMING PROBLEMS WITH THESE SO WILL
BROADBRUSH.  MOST OF THE ENERGY WILL BE TRAVELING THRU NRN CA.  WITH
RELATIVE UNSTBL AMS AND MOIST UPSTREAM FLOW.. WILL CONT WITH POPS ABV
MOS.  TEMPS CONT SEASONABLY MILD.  WILL NOT DEFER MUCH FROM MOS TEMP
GUIDANCE.  FRISBIE

CURRENT WRNGS.. ADVYS AND WATCHES IN EFFECT ARE..
     ..FLOOD WARNING FOR THE ST. JOE RIVER NEAR CALDER
     ..URBAN AND SMALL STREAM FLOOD WARNING FOR NE AND SE WA/ID PNHDL
         IN CWA
     ..FLOOD WATCH FOR THE SOUTH FORK OF THE PALOUSE RIVER
     ..FLOOD WATCH FOR HANGMAN CREEK

...PRODUCTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE...
...PLEASE SEE SEACCFSEA AND ZONE FORECAST PRODUCTS...

GEG 039/047 03~7/043 +855
CQV 039/045 035/042 +866
S86 040/046 035/043 +966
S06 038/046 034/043 ++77
COE 039/046 037/043 +966