Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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AUUS46 KPDT 221100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT FRI JUL 22 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW-W 8-15 MPH.      SW 15-25 MPH.
TRANSPORT WINDS               SW-W 8-15 MPH.      NW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SAT JUL 23        FAIR.

VENTILATION INDEX (CATEGORY)  251 (POOR).         1037 (GOOD).
OUTLOOK FOR SAT JUL 23        531 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 6-12 MPH.      W 15-25 MPH.
TRANSPORT WINDS               W-NW 6-12 MPH.      NW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT JUL 23        POOR.

VENTILATION INDEX (CATEGORY)  141 (POOR).         926 (GOOD).
OUTLOOK FOR SAT JUL 23        235 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 10-20 MPH.       NW 10-20 MPH.
TRANSPORT WINDS               NW 10-20 MPH.       W 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SAT JUL 23        GOOD.

VENTILATION INDEX (CATEGORY)  84 (POOR).          814 (GOOD).
OUTLOOK FOR SAT JUL 23        289 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      604 (GOOD)
ELLENSBURG   1029 (GOOD)
GOLDENDALE    900 (GOOD)
TRI-CITIES    841 (GOOD)
WALLA WALLA  1050 (GOOD)
YAKIMA       1050 (GOOD)
BEND          457 (FAIR)
PRINEVILLE    517 (FAIR)
ENTERPRISE    819 (GOOD)
HERMISTON    1050 (GOOD)
JOHN DAY      736 (GOOD)
LA GRANDE     846 (GOOD)
MADRAS        563 (FAIR)
MEACHAM       882 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND       615 (GOOD)
SENECA        710 (GOOD)
THE DALLES   1050 (GOOD)

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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