Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 041100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT SAT JUL 4 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S-SW 5-10 MPH.      SW 8-14 MPH.
TRANSPORT WINDS               S-SW 5-10 MPH.      SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN JUL 5         GOOD.

VENTILATION INDEX (CATEGORY)  91 (POOR).          454 (FAIR).
OUTLOOK FOR SUN JUL 5         566 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 6-12 MPH.        W 10-15 MPH.
TRANSPORT WINDS               NW 6-12 MPH.        W 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN JUL 5         FAIR.

VENTILATION INDEX (CATEGORY)  54 (POOR).          219 (POOR).
OUTLOOK FOR SUN JUL 5         510 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 0-4 MPH.         NW 5-10 MPH.
TRANSPORT WINDS               SW 0-4 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN JUL 5         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          252 (POOR).
OUTLOOK FOR SUN JUL 5         595 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      245 (POOR)
ELLENSBURG    232 (POOR)
GOLDENDALE    212 (POOR)
TRI-CITIES    463 (FAIR)
WALLA WALLA   482 (FAIR)
YAKIMA        171 (POOR)
BEND          240 (POOR)
PRINEVILLE    309 (FAIR)
ENTERPRISE    292 (POOR)
HERMISTON     438 (FAIR)
JOHN DAY      376 (FAIR)
LA GRANDE     232 (POOR)
MADRAS        279 (POOR)
MEACHAM       200 (POOR)
PENDLETON     332 (FAIR)
REDMOND       249 (POOR)
SENECA        530 (FAIR)
THE DALLES    349 (FAIR)

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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