Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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AUUS46 KPDT 131144
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
344 AM PST SAT FEB 13 2016

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

...AIR STAGNATION ADVISORY UNTIL 10 AM FOR THE YAKIMA VALLEY AND
THE LOWER COLUMBIA BASIN/BLUE MOUNTAIN FOOTHILLS...

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 7-13 MPH.        SW 15-25 MPH.
TRANSPORT WINDS               SW 7-13 MPH.        SW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN FEB 14        GOOD.

VENTILATION INDEX (CATEGORY)  34 (POOR).          270 (POOR).
OUTLOOK FOR SUN FEB 14        384 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 0-4 MPH.         SW 10-15 MPH.
TRANSPORT WINDS               SW 0-4 MPH.         SW 12-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN FEB 14        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          192 (POOR).
OUTLOOK FOR SUN FEB 14        138 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-4 MPH.         SW 5-10 MPH.
TRANSPORT WINDS               SE 0-4 MPH.         SW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN FEB 14        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          249 (POOR).
OUTLOOK FOR SUN FEB 14        109 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      126 (POOR)
ELLENSBURG    134 (POOR)
GOLDENDALE    176 (POOR)
TRI-CITIES    113 (POOR)
WALLA WALLA   188 (POOR)
YAKIMA         25 (POOR)
BEND           97 (POOR)
PRINEVILLE    192 (POOR)
ENTERPRISE    432 (FAIR)
HERMISTON     299 (POOR)
JOHN DAY      194 (POOR)
LA GRANDE     275 (POOR)
MADRAS        255 (POOR)
MEACHAM       352 (FAIR)
PENDLETON     391 (FAIR)
REDMOND       184 (POOR)
SENECA        177 (POOR)
THE DALLES    267 (POOR)

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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