Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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302
AUUS46 KPDT 241100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT TUE MAY 24 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S-SW 4-9 MPH.       SW-W 6-12 MPH.
TRANSPORT WINDS               S-SW 4-9 MPH.       NW 7-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED MAY 25        GOOD.

VENTILATION INDEX (CATEGORY)  156 (POOR).         789 (GOOD).
OUTLOOK FOR WED MAY 25        732 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         SW 5-10 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED MAY 25        FAIR.

VENTILATION INDEX (CATEGORY)  63 (POOR).          463 (FAIR).
OUTLOOK FOR WED MAY 25        469 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-5 MPH.         NW 5-10 MPH.
TRANSPORT WINDS               SE 0-5 MPH.         SW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED MAY 25        GOOD.

VENTILATION INDEX (CATEGORY)  43 (POOR).          439 (FAIR).
OUTLOOK FOR WED MAY 25        398 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      491 (FAIR)
ELLENSBURG    900 (GOOD)
GOLDENDALE    664 (GOOD)
TRI-CITIES    629 (GOOD)
WALLA WALLA   763 (GOOD)
YAKIMA        496 (FAIR)
BEND          290 (POOR)
PRINEVILLE    450 (FAIR)
ENTERPRISE    501 (FAIR)
HERMISTON     892 (GOOD)
JOHN DAY      503 (FAIR)
LA GRANDE     465 (FAIR)
MADRAS        463 (FAIR)
MEACHAM       544 (FAIR)
PENDLETON     792 (GOOD)
REDMOND       438 (FAIR)
SENECA        439 (FAIR)
THE DALLES    625 (GOOD)

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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