Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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981
AUUS46 KPDT 251301
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
600 AM PDT WED MAY 25 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 7-15 MPH.      W 10-18 MPH.
TRANSPORT WINDS               S-SW 7-15 MPH.      SW 11-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR THU MAY 26        FAIR.

VENTILATION INDEX (CATEGORY)  162 (POOR).         810 (GOOD).
OUTLOOK FOR THU MAY 26        705 (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 7-12 MPH.
TRANSPORT WINDS               W 4-7 MPH.          W 8-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU MAY 26        GOOD.

VENTILATION INDEX (CATEGORY)  69 (POOR).          490 (FAIR).
OUTLOOK FOR THU MAY 26        512 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          NW 8-13 MPH.
TRANSPORT WINDS               W 2-5 MPH.          NW 9-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU MAY 26        FAIR.

VENTILATION INDEX (CATEGORY)  57 (POOR).          422 (FAIR).
OUTLOOK FOR THU MAY 26        416 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      481 (FAIR)
ELLENSBURG    645 (GOOD)
GOLDENDALE    592 (FAIR)
TRI-CITIES    793 (GOOD)
WALLA WALLA   710 (GOOD)
YAKIMA        483 (FAIR)
BEND          396 (FAIR)
PRINEVILLE    438 (FAIR)
ENTERPRISE    459 (FAIR)
HERMISTON     943 (GOOD)
JOHN DAY      421 (FAIR)
LA GRANDE     429 (FAIR)
MADRAS        448 (FAIR)
MEACHAM       397 (FAIR)
PENDLETON     697 (GOOD)
REDMOND       444 (FAIR)
SENECA        479 (FAIR)
THE DALLES    769 (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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