Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 231211
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
510 AM PDT MON OCT 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                 S 0-7 MPH.          VRB 1-4 MPH.
TRANSPORT WINDS               S 3-9 MPH.          SW 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE OCT 24        POOR.

VENTILATION INDEX (CATEGORY)  36 (POOR).          124 (POOR).
OUTLOOK FOR TUE OCT 24        52 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 0-5 MPH.          SE 0-4 MPH.
TRANSPORT WINDS               W 4-8 MPH.          S 1-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE OCT 24        POOR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          32 (POOR).
OUTLOOK FOR TUE OCT 24        49 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-3 MPH.        S 0-4 MPH.
TRANSPORT WINDS               S 0-3 MPH.          S 0-3 MPH.
MIXING HEIGHT                 4000 FT MSL.        6000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE OCT 24        POOR.

VENTILATION INDEX (CATEGORY)  29 (POOR).          89 (POOR).
OUTLOOK FOR TUE OCT 24        71 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       46 (POOR)
ELLENSBURG     51 (POOR)
GOLDENDALE     33 (POOR)
TRI-CITIES     62 (POOR)
WALLA WALLA   145 (POOR)
YAKIMA         28 (POOR)
BEND           52 (POOR)
PRINEVILLE    101 (POOR)
ENTERPRISE     36 (POOR)
HERMISTON      64 (POOR)
JOHN DAY       53 (POOR)
LA GRANDE      98 (POOR)
MADRAS         54 (POOR)
MEACHAM        86 (POOR)
PENDLETON     105 (POOR)
REDMOND        92 (POOR)
SENECA         51 (POOR)
THE DALLES     33 (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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