Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 211100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT THU AUG 21 2014

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-10 MPH.        W 10-15 MPH.
TRANSPORT WINDS               SW 5-10 MPH.        SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 22        POOR.

VENTILATION INDEX (CATEGORY)  30 (POOR).          520 (FAIR).
OUTLOOK FOR FRI AUG 22        344 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-9 MPH.         NW 5-10 MPH.
TRANSPORT WINDS               NW 4-9 MPH.         W 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI AUG 22        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          206 (POOR).
OUTLOOK FOR FRI AUG 22        859 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         NW 10-15 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 22        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          143 (POOR).
OUTLOOK FOR FRI AUG 22        419 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      146 (POOR)
ELLENSBURG    152 (POOR)
GOLDENDALE    289 (POOR)
TRI-CITIES    519 (FAIR)
WALLA WALLA   412 (FAIR)
YAKIMA        133 (POOR)
BEND          435 (FAIR)
ENTERPRISE    100 (POOR)
HERMISTON     546 (FAIR)
JOHN DAY      272 (POOR)
LA GRANDE     156 (POOR)
MADRAS        412 (FAIR)
MEACHAM       190 (POOR)
PENDLETON     464 (FAIR)
REDMOND       410 (FAIR)
SENECA        281 (POOR)
THE DALLES    425 (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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