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983
AUUS46 KPDT 281200
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PST FRI NOV 28 2014

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 4-9 MPH.         SW 18-28 MPH.
TRANSPORT WINDS               SW 4-9 MPH.         SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT NOV 29        FAIR.

VENTILATION INDEX (CATEGORY)  34 (POOR).          691 (GOOD).
OUTLOOK FOR SAT NOV 29        214 (POOR).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 10-20 MPH.        SW 15-25 MPH.
TRANSPORT WINDS               S 10-20 MPH.        SW 20-30 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR SAT NOV 29        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          536 (FAIR).
OUTLOOK FOR SAT NOV 29        186 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 7-13 MPH.         S 15-25 MPH.
TRANSPORT WINDS               S 7-13 MPH.         S 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT NOV 29        FAIR.

VENTILATION INDEX (CATEGORY)  27 (POOR).          118 (POOR).
OUTLOOK FOR SAT NOV 29        225 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      193 (POOR)
ELLENSBURG    559 (FAIR)
GOLDENDALE     69 (POOR)
TRI-CITIES    506 (FAIR)
WALLA WALLA   300 (POOR)
YAKIMA        471 (FAIR)
BEND          320 (FAIR)
PRINEVILLE    434 (FAIR)
ENTERPRISE    105 (POOR)
HERMISTON     694 (GOOD)
JOHN DAY      148 (POOR)
LA GRANDE     183 (POOR)
MADRAS        693 (GOOD)
MEACHAM       157 (POOR)
PENDLETON     338 (FAIR)
REDMOND       529 (FAIR)
SENECA        127 (POOR)
THE DALLES    164 (POOR)

METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY
SOME OF THE FACTORS USED IN BURN DECISIONS.  BURN DECISIONS ARE
OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE.

THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT
AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS.  A VENTILATION
INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS:
HTTP://WWW.WRH.NOAA.GOV/PDT/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.

$$





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