Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 191135
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
435 AM PDT TUE AUG 19 2014

*** 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 5-9 MPH.       SW-W 14-19 MPH.
TRANSPORT WINDS               S-SW 5-9 MPH.       W 12-17 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED AUG 20        GOOD.

VENTILATION INDEX (CATEGORY)  36 (POOR).          746 (GOOD).
OUTLOOK FOR WED AUG 20        681 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 6-8 MPH.       W 10-14 MPH.
TRANSPORT WINDS               W-NW 6-8 MPH.       W 8-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED AUG 20        POOR.

VENTILATION INDEX (CATEGORY)  31 (POOR).          606 (GOOD).
OUTLOOK FOR WED AUG 20        328 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-4 MPH.       NW 8-12 MPH.
TRANSPORT WINDS               VRBL 2-4 MPH.       W 8-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED AUG 20        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          504 (FAIR).
OUTLOOK FOR WED AUG 20        403 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      489 (FAIR)
ELLENSBURG    712 (GOOD)
GOLDENDALE    491 (FAIR)
TRI-CITIES    816 (GOOD)
WALLA WALLA   783 (GOOD)
YAKIMA        801 (GOOD)
BEND          635 (GOOD)
ENTERPRISE    453 (FAIR)
HERMISTON     679 (GOOD)
JOHN DAY      727 (GOOD)
LA GRANDE     558 (FAIR)
MADRAS        689 (GOOD)
MEACHAM       549 (FAIR)
PENDLETON     767 (GOOD)
REDMOND       640 (GOOD)
SENECA        722 (GOOD)
THE DALLES    601 (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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