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159
AUUS46 KPDT 221159
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
500 AM PDT MON SEP 22 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 0-7 MPH.          SW 7-11 MPH.
TRANSPORT WINDS               S 3-8 MPH.          SW 10-17 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE SEP 23        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          512 (FAIR).
OUTLOOK FOR TUE SEP 23        176 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 0-5 MPH.          SW 3-8 MPH.
TRANSPORT WINDS               NW 2-7 MPH.         SW 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE SEP 23        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          331 (FAIR).
OUTLOOK FOR TUE SEP 23        679 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 0-6 MPH.          SW 4-8 MPH.
TRANSPORT WINDS               S 4-8 MPH.          SW 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE SEP 23        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          374 (FAIR).
OUTLOOK FOR TUE SEP 23        1004 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      200 (POOR)
ELLENSBURG    295 (POOR)
GOLDENDALE    417 (FAIR)
TRI-CITIES    581 (FAIR)
WALLA WALLA   451 (FAIR)
YAKIMA        248 (POOR)
BEND          322 (FAIR)
ENTERPRISE    240 (POOR)
HERMISTON     539 (FAIR)
JOHN DAY      675 (GOOD)
LA GRANDE     564 (FAIR)
MADRAS        313 (FAIR)
MEACHAM       296 (POOR)
PENDLETON     387 (FAIR)
REDMOND       272 (POOR)
SENECA        740 (GOOD)
THE DALLES    202 (POOR)

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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