Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 221210
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
510 AM PDT WED MAR 22 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-5 MPH.         SW 10-17 MPH.
TRANSPORT WINDS               SE 2-6 MPH.         SW 14-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU MAR 23        FAIR.

VENTILATION INDEX (CATEGORY)  56 (POOR).          427 (FAIR).
OUTLOOK FOR THU MAR 23        481 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-4 MPH.        SW 12-19 MPH.
TRANSPORT WINDS               VRB 0-4 MPH.        SW 16-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU MAR 23        FAIR.

VENTILATION INDEX (CATEGORY)  47 (POOR).          813 (GOOD).
OUTLOOK FOR THU MAR 23        397 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-15 MPH.         S 5-15 MPH.
TRANSPORT WINDS               S 3-10 MPH.         S 7-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU MAR 23        GOOD.

VENTILATION INDEX (CATEGORY)  91 (POOR).          553 (FAIR).
OUTLOOK FOR THU MAR 23        220 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      127 (POOR)
ELLENSBURG    155 (POOR)
GOLDENDALE    682 (GOOD)
TRI-CITIES    512 (FAIR)
WALLA WALLA   402 (FAIR)
YAKIMA        891 (GOOD)
BEND          974 (GOOD)
PRINEVILLE    817 (GOOD)
ENTERPRISE    477 (FAIR)
HERMISTON     410 (FAIR)
JOHN DAY      224 (POOR)
LA GRANDE     567 (FAIR)
MADRAS       1050 (GOOD)
MEACHAM       100 (POOR)
PENDLETON     352 (FAIR)
REDMOND       945 (GOOD)
SENECA        245 (POOR)
THE DALLES    448 (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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