Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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126
AUUS46 KPDT 261238
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
538 AM PDT THU MAY 26 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 10-15 MPH.       SW 16-22 MPH.
TRANSPORT WINDS               SW 14-19 MPH.       SW 18-24 MPH.
MIXING HEIGHT                 2000 FT MSL.        7000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR FRI MAY 27        GOOD.

VENTILATION INDEX (CATEGORY)  281 (POOR).         769 (GOOD).
OUTLOOK FOR FRI MAY 27        924 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-7 MPH.          W 10-16 MPH.
TRANSPORT WINDS               W 4-7 MPH.          W 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI MAY 27        FAIR.

VENTILATION INDEX (CATEGORY)  68 (POOR).          361 (FAIR).
OUTLOOK FOR FRI MAY 27        668 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 10-16 MPH.     NW 9-15 MPH.
TRANSPORT WINDS               W 7-13 MPH.         W 10-16 MPH.
MIXING HEIGHT                 4000 FT MSL.        8500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR FRI MAY 27        GOOD.

VENTILATION INDEX (CATEGORY)  70 (POOR).          450 (FAIR).
OUTLOOK FOR FRI MAY 27        597 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      418 (FAIR)
ELLENSBURG    642 (GOOD)
GOLDENDALE    563 (FAIR)
TRI-CITIES    514 (FAIR)
WALLA WALLA   807 (GOOD)
YAKIMA        390 (FAIR)
BEND          411 (FAIR)
PRINEVILLE    451 (FAIR)
ENTERPRISE    329 (FAIR)
HERMISTON     852 (GOOD)
JOHN DAY      404 (FAIR)
LA GRANDE     485 (FAIR)
MADRAS        484 (FAIR)
MEACHAM       542 (FAIR)
PENDLETON     888 (GOOD)
REDMOND       430 (FAIR)
SENECA        425 (FAIR)
THE DALLES    677 (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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