Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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443
AUUS46 KPDT 171354
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
554 AM PST TUE JAN 17 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 3-7 MPH.          NE 6-12 MPH.
TRANSPORT WINDS               NE 1-7 MPH.         NE 3-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JAN 18        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          31 (POOR).
OUTLOOK FOR WED JAN 18        78 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E 2-5 MPH.          E 5-9 MPH.
TRANSPORT WINDS               E 3-8 MPH.          E 5-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JAN 18        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          41 (POOR).
OUTLOOK FOR WED JAN 18        27 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 18-35 MPH.        S 22-39 MPH.
TRANSPORT WINDS               S 15-20 MPH.        S 22-31 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR WED JAN 18        FAIR.

VENTILATION INDEX (CATEGORY)  62 (POOR).          127 (POOR).
OUTLOOK FOR WED JAN 18        340 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       49 (POOR)
ELLENSBURG     34 (POOR)
GOLDENDALE     25 (POOR)
TRI-CITIES     33 (POOR)
WALLA WALLA    31 (POOR)
YAKIMA         44 (POOR)
BEND           26 (POOR)
PRINEVILLE     42 (POOR)
ENTERPRISE     25 (POOR)
HERMISTON      37 (POOR)
JOHN DAY       49 (POOR)
LA GRANDE     156 (POOR)
MADRAS         25 (POOR)
MEACHAM        58 (POOR)
PENDLETON      36 (POOR)
REDMOND        46 (POOR)
SENECA         47 (POOR)
THE DALLES     52 (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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