Flash Flood Warning 9, NWS Boise, ID

379 
WGUS75 KBOI 050229
FFSBOI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BOISE ID
829 PM MDT MON AUG 4 2014

IDC015-039-050235-
/O.CAN.KBOI.FF.W.0009.000000T0000Z-140805T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BOISE ID-ELMORE ID-
829 PM MDT MON AUG 4 2014

...THE FLASH FLOOD WARNING FOR BOISE AND NORTH CENTRAL ELMORE
COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO 
POSE A THREAT. RURAL ROADS COULD BE WASHED OUT OR FLOODED. PLEASE 
USE CAUTION IF TRAVELING IN THIS AREA TONIGHT. MORE HEAVY RAIN IS 
EXPECTED IN THE BOISE MOUNTAINS ON TUESDAY AND WEDNESDAY.

LAT...LON 4361 11598 4386 11607 4423 11604 4424 11530
      4390 11518

$$

JDS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
248 PM MDT MON AUG 4 2014

.SHORT TERM...TONIGHT THROUGH WEDNESDAY...VERY MOIST DEFORMATION
AXIS HAS REACHED SOUTH-CENTRAL IDAHO. LATEST RADAR LOOPS INDICATE
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS OVER THE BOISE/WEST
CENTRAL MTNS...SOUTH TO THE NEVADA BORDER AND WEST INTO SOUTHERN
MALHEUR COUNTY. SO FAR...THE CONVECTION IS NOT THAT IMPRESSIVE
ALTHOUGH RAINFALL RATES OF UP TO 0.5 INCHES PER HOUR WERE
INDICATED WITH THE STRONGER CELLS. THERE ARE STILL SEVERAL HOURS
OF HEATING LEFT TO INITIATE DEEPER CONVECTION...AND THUS THE FLASH
FLOOD THREAT ASSOCIATED WITH THUNDERSTORMS WILL CONTINUE MAINLY
FOR PORTIONS OF SW IDAHO. MODELS CONTINUE TO SHOW THAT THE MOIST
AND UNSTABLE DEFORMATION AXIS WILL REMAIN SITUATED ACROSS MUCH OF
SW IDAHO AND PORTIONS OF SE OREGON THROUGH TUESDAY. THE MODELS
DIVERGE AFTER THAT AS THE NAM SHIFTS THE MOISTURE EAST OF THE AREA
QUICKER THAN THE GFS AND ECMWF. THE FORECAST WILL REFLECT A BLEND
OF THE SLOWER GFS/ECMWF WHICH HOLDS THE MOISTURE IN PLACE THROUGH
WEDNESDAY. THE FLASH FLOOD WATCHES THAT ARE CURRENTLY IN EFFECT
WILL CONTINUE THROUGH TUESDAY EVENING. THE WATCHES MAY NEED TO BE
EXTENDED INTO WEDNESDAY IF FUTURE MODEL RUNS CONTINUE TO SUPPORT A
SLOWER DEPARTURE OF THE MOISTURE. TEMPERATURE CONTRASTS ACROSS
THE CWA WILL CONTINUE...WITH BELOW NORMAL TEMPERATURES CENTERED
IN THE WESTERN MAGIC VALLEY TO NEAR NORMAL TEMPERATURES IN THE
DRIER AIR MASS...WHICH INCLUDES MOST OF SE OREGON.

.LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY...LATEST MODEL RUNS
KEEP THE MONSOONAL MOISTURE OVER THE AREA AND POSSIBLE FLASH FLOOD
THREAT THROUGH THURSDAY. THIS SYSTEM WILL SLOWLY EXIT THE AREA BY
FRIDAY. RESIDUAL MOISTURE WILL KEEP A THREAT OF AFTERNOON SHOWERS
AND THUNDERSTORMS MAINLY OVER THE HIGHER TERRAIN THROUGH MONDAY AS
A WEAK TROUGH LINGERS OFF THE NORTHERN CA COAST THROUGH MONDAY.
SLIGHTLY BELOW NORMAL TEMPERATURES WILL GRADUALLY WARM TO NORMAL
BY SATURDAY AND ABOVE NORMAL BY SUNDAY AND BEYOND.

&&

.AVIATION...VFR. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
SURFACE WINDS EASTERLY 5-15KT...EXCEPT IN VICINITY OF
THUNDERSTORMS WHERE GUSTS TO 40KT POSSIBLE. WINDS ALOFT AT 10K FT
MSL...NORTHEAST 5-15KT.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...FLASH FLOOD WATCH THROUGH TUESDAY EVENING IDZ013>016-028>030.
OR...NONE.

&&

WEATHER.GOV/BOISE

SHORT TERM...BW
LONG TERM....KA/AB
AVIATION.....KA