Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281307
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
507 AM PST SUN DEC 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-W 10-20 MPH.     W 7-16 MPH.
TRANSPORT WINDS               SW-W 10-20 MPH.     W 11-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR MON DEC 29        GOOD.

VENTILATION INDEX (CATEGORY)  58 (POOR).          297 (POOR).
OUTLOOK FOR MON DEC 29        389 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 5-10 MPH.         W 3-8 MPH.
TRANSPORT WINDS               W 5-10 MPH.         W 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON DEC 29        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          172 (POOR).
OUTLOOK FOR MON DEC 29        679 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-6 MPH.          NW 11-12 MPH.
TRANSPORT WINDS               S 4-6 MPH.          W 9-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON DEC 29        FAIR.

VENTILATION INDEX (CATEGORY)  42 (POOR).          249 (POOR).
OUTLOOK FOR MON DEC 29        122 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      121 (POOR)
ELLENSBURG    165 (POOR)
GOLDENDALE    253 (POOR)
TRI-CITIES    110 (POOR)
WALLA WALLA   224 (POOR)
YAKIMA         78 (POOR)
BEND          725 (GOOD)
PRINEVILLE    720 (GOOD)
ENTERPRISE    214 (POOR)
HERMISTON     307 (FAIR)
JOHN DAY      368 (FAIR)
LA GRANDE     277 (POOR)
MADRAS        420 (FAIR)
MEACHAM       291 (POOR)
PENDLETON     393 (FAIR)
REDMOND       681 (GOOD)
SENECA        788 (GOOD)
THE DALLES    277 (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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