017
FNUS76 KPDT 112245
FWSPDT
SPOT FORECAST FOR DARIGOLD HAZMAT...YCFD5
NATIONAL WEATHER SERVICE PENDLETON OR
ISSUED BY NATIONAL WEATHER SERVICE SEATTLE WA
345 PM PDT MON AUG 11 2025
FORECAST IS BASED ON FORECAST START TIME OF 1600 PDT ON AUGUST 11.
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES***
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***
***VENTILATION INDEX IS DERIVED FROM THE
TRANSPORT WIND MULTIPLIED BY THE MIXING
HEIGHT IN 100'S OF FEET. INDEX CATEGORIES
ARE A GENERALIZED INDICATOR ONLY.***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
..EXTREME HEAT WARNING IN EFFECT THROUGH 10 PM TUESDAY
...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...
DISCUSSION
HOT AND DRY CONDITIONS ARE EXPECTED AT THE INCIDENT
LOCATION THE REST OF TODAY. EXPECT LIGHT WINDS AT AROUND 5 MPH,
INCREASING WITH GUSTS TO 10 MPH FROM THE NORTHWEST LATE THIS
AFTERNOON. SURFACE WINDS SHIFT TO BE FROM THE NE LATE THIS EVENING.
EXPECT WELL-MIXED CONDITIONS WITH THE MIXING HEIGHT ABOVE 7500
FEET THIS EVENING, BUT WEAK INVERSION SETTING UP OVERNIGHT WILL
INCREASE STABILITY AND HOLD THE MIXING HEIGHT BELOW 1000 FT. THE
INVERSION SHOULD BREAK SHORTLY AFTER SUNRISE TUESDAY WITH ANOTHER
HOT, DRY, AND WELL-MIXED AFTERNOON AT THE INCIDENT SITE.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....100-103.
MIN HUMIDITY........16-21 PERCENT.
SURFACE WINDS (MPH).NORTHWEST WINDS AROUND 6 MPH WITH GUSTS TO 10 MPH,
SHIFTING TO THE NORTHEAST LATE THIS EVENING.
MIXING HEIGHT.......7600 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 6 MPH THIS AFTERNOON, BECOMING
NORTHEAST THIS EVENING.
TIME (PDT) 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM
TEMP............99 100 100 98 92 86 82 79 77 74 73 70
RH..............22 21 22 24 29 34 37 38 39 43 49 54
SURFACE WND DIR.NW NW NW NW NE NE NE NW NW NW W W
SURFACE WND SPD.6 6 6 6 5 7 7 5 5 5 5 5
SURFACE WND GST.8 9 9 9 9 9 9 6 6 6 6 6
TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....65-68.
MAX HUMIDITY........54-59 PERCENT.
SURFACE WINDS (MPH).NORTHWEST WINDS 6 TO 9 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING WEST AROUND 6 MPH
EARLY IN THE MORNING.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....NORTH 5 TO 9 MPH, BECOMING WEST EARLY IN THE
MORNING.
TUESDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....102-105.
MIN HUMIDITY........14-19 PERCENT.
SURFACE WINDS (MPH).WEST WINDS 6 TO 9 MPH SHIFTING TO THE SOUTHWEST
6 TO 10 MPH LATE IN THE MORNING.
MIXING HEIGHT.......8800 FT AGL.
TRANSPORT WINDS.....NORTH 7 TO 8 MPH IN THE MORNING BECOMING LIGHT,
THEN BECOMING WEST 7 TO 8 MPH LATE IN THE
AFTERNOON.
FORECASTER...NWS SEATTLE
REQUESTED BY...ANDREW
TYPE OF REQUEST...HAZMAT
.TAG 2519734.0/PDT
.DELDT 08/11/25
.FORMATTERVERSION 2.0.0
.EMAIL DISPATCH@YCFD5.ORG
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