Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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814
AUUS46 KPDT 291132
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
432 AM PDT MON MAY 29 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 3-6 MPH.          NE 4-7 MPH.
TRANSPORT WINDS               SE 4-8 MPH.         N 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE MAY 30        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          204 (POOR).
OUTLOOK FOR TUE MAY 30        398 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-8 MPH.         E 4-7 MPH.
TRANSPORT WINDS               N 5-10 MPH.         NE 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE MAY 30        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          283 (POOR).
OUTLOOK FOR TUE MAY 30        486 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-6 MPH.         S 4-7 MPH.
TRANSPORT WINDS               SE 3-6 MPH.         S 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       12000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE MAY 30        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          426 (FAIR).
OUTLOOK FOR TUE MAY 30        1034 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      451 (FAIR)
ELLENSBURG    364 (FAIR)
GOLDENDALE    483 (FAIR)
TRI-CITIES    222 (POOR)
WALLA WALLA    35 (POOR)
YAKIMA        260 (POOR)
BEND         1050 (GOOD)
PRINEVILLE   1050 (GOOD)
ENTERPRISE    419 (FAIR)
HERMISTON     287 (POOR)
JOHN DAY      492 (FAIR)
LA GRANDE     434 (FAIR)
MADRAS        432 (FAIR)
MEACHAM       307 (FAIR)
PENDLETON     225 (POOR)
REDMOND      1038 (GOOD)
SENECA        483 (FAIR)
THE DALLES    303 (FAIR)

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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