Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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439
AUUS46 KPDT 261129
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
429 AM PDT MON SEP 26 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-6 MPH.       N-NE 3-7 MPH.
TRANSPORT WINDS               VRBL 2-6 MPH.       S-SW 3-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE SEP 27        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          87 (POOR).
OUTLOOK FOR TUE SEP 27        287 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-8 MPH.          SE 2-5 MPH.
TRANSPORT WINDS               W 4-8 MPH.          SE 3-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE SEP 27        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          60 (POOR).
OUTLOOK FOR TUE SEP 27        295 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-3 MPH.       S 7-10 MPH.
TRANSPORT WINDS               VRBL 2-3 MPH.       S 14-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE SEP 27        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          436 (FAIR).
OUTLOOK FOR TUE SEP 27        179 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      120 (POOR)
ELLENSBURG    175 (POOR)
GOLDENDALE     99 (POOR)
TRI-CITIES     48 (POOR)
WALLA WALLA   201 (POOR)
YAKIMA        102 (POOR)
BEND          540 (FAIR)
PRINEVILLE    675 (GOOD)
ENTERPRISE    334 (FAIR)
HERMISTON      48 (POOR)
JOHN DAY      412 (FAIR)
LA GRANDE     472 (FAIR)
MADRAS        523 (FAIR)
MEACHAM       334 (FAIR)
PENDLETON      78 (POOR)
REDMOND       698 (GOOD)
SENECA        366 (FAIR)
THE DALLES    101 (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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