Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 221132
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
432 AM PDT SUN OCT 22 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 14-30 MPH.       SW 15-23 MPH.
TRANSPORT WINDS               SW 30-46 MPH.       W 25-35 MPH.
MIXING HEIGHT                 2500 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR MON OCT 23        POOR.

VENTILATION INDEX (CATEGORY)  676 (GOOD).         1036 (GOOD).
OUTLOOK FOR MON OCT 23        105 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW  5-15 MPH.       W 15-20 MPH.
TRANSPORT WINDS               SW 15-34 MPH.       W 20-28 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR MON OCT 23        POOR.

VENTILATION INDEX (CATEGORY)  297 (POOR).         1050 (GOOD).
OUTLOOK FOR MON OCT 23        64 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S  5-23 MPH.        W 5-15 MPH.
TRANSPORT WINDS               S 15-17 MPH.        W 10-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR MON OCT 23        POOR.

VENTILATION INDEX (CATEGORY)  151 (POOR).         654 (GOOD).
OUTLOOK FOR MON OCT 23        82 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      744 (GOOD)
ELLENSBURG   1050 (GOOD)
GOLDENDALE   1050 (GOOD)
TRI-CITIES    924 (GOOD)
WALLA WALLA  1050 (GOOD)
YAKIMA       1050 (GOOD)
BEND          904 (GOOD)
PRINEVILLE    907 (GOOD)
ENTERPRISE    870 (GOOD)
HERMISTON     906 (GOOD)
JOHN DAY      215 (POOR)
LA GRANDE     731 (GOOD)
MADRAS       1050 (GOOD)
MEACHAM      1037 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND      1047 (GOOD)
SENECA        244 (POOR)
THE DALLES    784 (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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