Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 231133
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
433 AM PDT FRI JUN 23 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 2-5 MPH.         N 6-8 MPH.
TRANSPORT WINDS               SE 2-5 MPH.         NE 8-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUN 24        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          599 (FAIR).
OUTLOOK FOR SAT JUN 24        628 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-6 MPH.          N-E 2-6 MPH.
TRANSPORT WINDS               W 3-6 MPH.          NE 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR SAT JUN 24        FAIR.

VENTILATION INDEX (CATEGORY)  28 (POOR).          352 (FAIR).
OUTLOOK FOR SAT JUN 24        500 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 1-5 MPH.          N 6-10 MPH.
TRANSPORT WINDS               N 2-4 MPH.          NE 7-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUN 24        FAIR.

VENTILATION INDEX (CATEGORY)  31 (POOR).          309 (FAIR).
OUTLOOK FOR SAT JUN 24        277 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      239 (POOR)
ELLENSBURG    233 (POOR)
GOLDENDALE    486 (FAIR)
TRI-CITIES    513 (FAIR)
WALLA WALLA   538 (FAIR)
YAKIMA        266 (POOR)
BEND          223 (POOR)
PRINEVILLE    221 (POOR)
ENTERPRISE    218 (POOR)
HERMISTON     662 (GOOD)
JOHN DAY      182 (POOR)
LA GRANDE     317 (FAIR)
MADRAS        485 (FAIR)
MEACHAM       280 (POOR)
PENDLETON     565 (FAIR)
REDMOND       273 (POOR)
SENECA        168 (POOR)
THE DALLES    579 (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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