Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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696
AUUS46 KPDT 281120
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
420 AM PDT THU JUL 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 3-8 MPH.       N-NW 4-7 MPH.
TRANSPORT WINDS               S-SW 3-8 MPH.       N 5-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JUL 29        POOR.

VENTILATION INDEX (CATEGORY)  48 (POOR).          235 (POOR).
OUTLOOK FOR FRI JUL 29        249 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-8 MPH.         SE 2-6 MPH.
TRANSPORT WINDS               NW 5-8 MPH.         W-SW 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI JUL 29        FAIR.

VENTILATION INDEX (CATEGORY)  37 (POOR).          242 (POOR).
OUTLOOK FOR FRI JUL 29        370 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         N 5-9 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         N 6-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI JUL 29        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          373 (FAIR).
OUTLOOK FOR FRI JUL 29        303 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      262 (POOR)
ELLENSBURG    356 (FAIR)
GOLDENDALE    216 (POOR)
TRI-CITIES    253 (POOR)
WALLA WALLA   212 (POOR)
YAKIMA        273 (POOR)
BEND          121 (POOR)
PRINEVILLE    169 (POOR)
ENTERPRISE    369 (FAIR)
HERMISTON     222 (POOR)
JOHN DAY      348 (FAIR)
LA GRANDE     367 (FAIR)
MADRAS        246 (POOR)
MEACHAM       265 (POOR)
PENDLETON     276 (POOR)
REDMOND       167 (POOR)
SENECA        367 (FAIR)
THE DALLES     74 (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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