Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT SAT MAY 28 2016

*** 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-W 8-14 MPH.
TRANSPORT WINDS               S-SW 5-10 MPH.      W 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN MAY 29        GOOD.

VENTILATION INDEX (CATEGORY)  145 (POOR).         506 (FAIR).
OUTLOOK FOR SUN MAY 29        927 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        S 5-10 MPH.
TRANSPORT WINDS               NW 5-10 MPH.        W 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN MAY 29        GOOD.

VENTILATION INDEX (CATEGORY)  47 (POOR).          253 (POOR).
OUTLOOK FOR SUN MAY 29        720 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-9 MPH.         S 4-9 MPH.
TRANSPORT WINDS               NW 4-9 MPH.         W 20-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN MAY 29        GOOD.

VENTILATION INDEX (CATEGORY)  30 (POOR).          304 (FAIR).
OUTLOOK FOR SUN MAY 29        430 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      473 (FAIR)
ELLENSBURG    592 (FAIR)
GOLDENDALE    300 (POOR)
TRI-CITIES    266 (POOR)
WALLA WALLA   563 (FAIR)
YAKIMA        264 (POOR)
BEND          262 (POOR)
PRINEVILLE    284 (POOR)
ENTERPRISE    291 (POOR)
HERMISTON     500 (FAIR)
JOHN DAY      330 (FAIR)
LA GRANDE     316 (FAIR)
MADRAS        305 (FAIR)
MEACHAM       385 (FAIR)
PENDLETON     573 (FAIR)
REDMOND       282 (POOR)
SENECA        281 (POOR)
THE DALLES    398 (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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