Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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746
AUUS46 KPDT 311100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT WED AUG 31 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 6-11 MPH.         W 9-12 MPH.
TRANSPORT WINDS               S 8-14 MPH.         SW 7-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU SEP 1         GOOD.

VENTILATION INDEX (CATEGORY)  114 (POOR).         535 (FAIR).
OUTLOOK FOR THU SEP 1         715 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 6-9 MPH.          S 6-9 MPH.
TRANSPORT WINDS               W 4-9 MPH.          SW 6-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU SEP 1         FAIR.

VENTILATION INDEX (CATEGORY)  80 (POOR).          596 (FAIR).
OUTLOOK FOR THU SEP 1         524 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 6-8 MPH.         W 7-9 MPH.
TRANSPORT WINDS               NW 1-3 MPH.         SW 4-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU SEP 1         GOOD.

VENTILATION INDEX (CATEGORY)  46 (POOR).          547 (FAIR).
OUTLOOK FOR THU SEP 1         369 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      348 (FAIR)
ELLENSBURG    549 (FAIR)
GOLDENDALE    719 (GOOD)
TRI-CITIES    639 (GOOD)
WALLA WALLA   426 (FAIR)
YAKIMA        611 (GOOD)
BEND          631 (GOOD)
PRINEVILLE    555 (FAIR)
ENTERPRISE    648 (GOOD)
HERMISTON     605 (GOOD)
JOHN DAY     1009 (GOOD)
LA GRANDE     518 (FAIR)
MADRAS        531 (FAIR)
MEACHAM       250 (POOR)
PENDLETON     397 (FAIR)
REDMOND       514 (FAIR)
SENECA       1047 (GOOD)
THE DALLES    435 (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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