Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 241228
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
528 AM PDT THU APR 24 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 10-15 MPH.        SW 16-20 MPH.
TRANSPORT WINDS               S 10-15 MPH.        SW 27-32 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR FRI APR 25        FAIR.

VENTILATION INDEX (CATEGORY)  37 (POOR).          1043 (GOOD).
OUTLOOK FOR FRI APR 25        605 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 11-15 MPH.        SW 18-23 MPH.
TRANSPORT WINDS               S 11-15 MPH.        SW 23-32 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR FRI APR 25        FAIR.

VENTILATION INDEX (CATEGORY)  108 (POOR).         1050 (GOOD).
OUTLOOK FOR FRI APR 25        534 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 9-11 MPH.         SW 9-11 MPH.
TRANSPORT WINDS               S 9-11 MPH.         SW 15-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI APR 25        GOOD.

VENTILATION INDEX (CATEGORY)  36 (POOR).          546 (FAIR).
OUTLOOK FOR FRI APR 25        449 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      649 (GOOD)
ELLENSBURG   1047 (GOOD)
GOLDENDALE   1050 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA  1035 (GOOD)
YAKIMA       1050 (GOOD)
BEND         1050 (GOOD)
ENTERPRISE    414 (FAIR)
HERMISTON    1050 (GOOD)
JOHN DAY      939 (GOOD)
LA GRANDE     492 (FAIR)
MADRAS       1050 (GOOD)
MEACHAM       725 (GOOD)
PENDLETON     975 (GOOD)
REDMOND      1050 (GOOD)
SENECA       1050 (GOOD)
THE DALLES    597 (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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