Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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572
AUUS46 KPDT 271122
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
422 AM PDT WED JUL 27 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.      NW 5-8 MPH.
TRANSPORT WINDS               S-SW 5-10 MPH.      W-SW 4-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JUL 28        POOR.

VENTILATION INDEX (CATEGORY)  95 (POOR).          307 (FAIR).
OUTLOOK FOR THU JUL 28        229 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 4-9 MPH.       N-NW 3-8 MPH.
TRANSPORT WINDS               W-NW 4-9 MPH.       W 4-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JUL 28        POOR.

VENTILATION INDEX (CATEGORY)  57 (POOR).          294 (POOR).
OUTLOOK FOR THU JUL 28        210 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-5 MPH.         N-NW 5-8 MPH.
TRANSPORT WINDS               NW 3-5 MPH.         W-NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUL 28        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          269 (POOR).
OUTLOOK FOR THU JUL 28        393 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      257 (POOR)
ELLENSBURG    251 (POOR)
GOLDENDALE    145 (POOR)
TRI-CITIES    292 (POOR)
WALLA WALLA   327 (FAIR)
YAKIMA        253 (POOR)
BEND          254 (POOR)
PRINEVILLE    318 (FAIR)
ENTERPRISE    188 (POOR)
HERMISTON     317 (FAIR)
JOHN DAY      395 (FAIR)
LA GRANDE     295 (POOR)
MADRAS        289 (POOR)
MEACHAM       235 (POOR)
PENDLETON     285 (POOR)
REDMOND       330 (FAIR)
SENECA        322 (FAIR)
THE DALLES    217 (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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