Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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517
AUUS46 KPDT 251123
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
423 AM PDT SUN SEP 25 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE-S 3-6 MPH.       N-NE 3-7 MPH.
TRANSPORT WINDS               SE-S 3-6 MPH.       S-SW 2-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON SEP 26        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          120 (POOR).
OUTLOOK FOR MON SEP 26        104 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          E-SE 2-5 MPH.
TRANSPORT WINDS               W 2-5 MPH.          S-SE 3-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON SEP 26        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          89 (POOR).
OUTLOOK FOR MON SEP 26        72 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-4 MPH.         E-SE 2-4 MPH.
TRANSPORT WINDS               SE 2-4 MPH.         W-NW 3-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON SEP 26        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          103 (POOR).
OUTLOOK FOR MON SEP 26        435 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      179 (POOR)
ELLENSBURG    201 (POOR)
GOLDENDALE     81 (POOR)
TRI-CITIES    122 (POOR)
WALLA WALLA   157 (POOR)
YAKIMA        105 (POOR)
BEND          168 (POOR)
PRINEVILLE    175 (POOR)
ENTERPRISE    208 (POOR)
HERMISTON     114 (POOR)
JOHN DAY      102 (POOR)
LA GRANDE     103 (POOR)
MADRAS         98 (POOR)
MEACHAM       107 (POOR)
PENDLETON      73 (POOR)
REDMOND       212 (POOR)
SENECA         95 (POOR)
THE DALLES     71 (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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