Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 201111
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
411 AM PDT SAT SEP 20 2014

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-4 MPH.        N 6-10 MPH.
TRANSPORT WINDS               S 0-5 MPH.          NE 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN SEP 21        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          322 (FAIR).
OUTLOOK FOR SUN SEP 21        65 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-5 MPH.         NE 5-9 MPH.
TRANSPORT WINDS               NW 0-6 MPH.         E 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN SEP 21        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          435 (FAIR).
OUTLOOK FOR SUN SEP 21        60 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 0-3 MPH.         NE 4-8 MPH.
TRANSPORT WINDS               NE 0-3 MPH.         NE 2-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SUN SEP 21        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          155 (POOR).
OUTLOOK FOR SUN SEP 21        144 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      349 (FAIR)
ELLENSBURG    414 (FAIR)
GOLDENDALE    484 (FAIR)
TRI-CITIES    336 (FAIR)
WALLA WALLA   232 (POOR)
YAKIMA        440 (FAIR)
BEND          369 (FAIR)
ENTERPRISE    214 (POOR)
HERMISTON     386 (FAIR)
JOHN DAY      153 (POOR)
LA GRANDE     146 (POOR)
MADRAS        297 (POOR)
MEACHAM       142 (POOR)
PENDLETON     268 (POOR)
REDMOND       349 (FAIR)
SENECA        242 (POOR)
THE DALLES    336 (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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