Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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651
AUUS46 KPDT 221354
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
555 AM PST SUN JAN 22 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 5-10 MPH.        S 5-15 MPH.
TRANSPORT WINDS               SE 5-15 MPH.        S 5-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON JAN 23        POOR.

VENTILATION INDEX (CATEGORY)  28 (POOR).          104 (POOR).
OUTLOOK FOR MON JAN 23        33 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 2-6 MPH.          NW 3-5 MPH.
TRANSPORT WINDS               NE 4-8 MPH.         W 3-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON JAN 23        POOR.

VENTILATION INDEX (CATEGORY)  40 (POOR).          26 (POOR).
OUTLOOK FOR MON JAN 23        25 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-15 MPH.         S 10-20 MPH.
TRANSPORT WINDS               S 10-20 MPH.        S 15-30 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR MON JAN 23        POOR.

VENTILATION INDEX (CATEGORY)  158 (POOR).         525 (FAIR).
OUTLOOK FOR MON JAN 23        56 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      135 (POOR)
ELLENSBURG     91 (POOR)
GOLDENDALE     25 (POOR)
TRI-CITIES     25 (POOR)
WALLA WALLA   254 (POOR)
YAKIMA         27 (POOR)
BEND         1050 (GOOD)
PRINEVILLE    610 (GOOD)
ENTERPRISE    578 (FAIR)
HERMISTON      25 (POOR)
JOHN DAY      651 (GOOD)
LA GRANDE     566 (FAIR)
MADRAS        432 (FAIR)
MEACHAM       411 (FAIR)
PENDLETON     274 (POOR)
REDMOND       539 (FAIR)
SENECA        619 (GOOD)
THE DALLES     25 (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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