474
FNUS76 KPDT 191825
FWSPDT

Spot Forecast for Tiddly Winks RX 8, 9...USFS
National Weather Service Pendleton OR
1125 AM PDT Sun May 19 2024

Forecast is based on ignition time of 0800 PDT on May 20.
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Monday will be several degrees warmer with lower
humidity and less wind than today, but winds will increase
slightly on Monday evening. On Tuesday, a Pacific front will
spread precipitation across the Cascades and will increase the
potential for rain along the east slopes in the afternoon.
Rainfall amounts Tuesday afternoon through Wednesday morning are
forecast to be around 0.1 inch at the burn site.

.MONDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....61-63.
Min humidity........20-25 percent.
Wind (20 ft)........Light winds becoming north 5 to 8 mph with
                    gusts to around 16 mph late in the morning.
Ridgetop wind.......Light winds becoming 6 to 10 mph with gusts
                    to 20 mph late in the morning.
Mixing height.......Near surface rising to 8300 ft AGL in the
                    afternoon.
Transport winds.....North to northwest winds 4 to 9 mph becoming
                    north 11 to 16 mph in the afternoon.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM
Temp............38  44  48  52  55  58  61  62  62  61  59  56
RH..............72  61  51  41  35  30  26  25  26  28  32  38
20 FT wind dir..NW  NW  NW  N   N   N   N   N   N   N   N   N
20 FT wind spd..4   4   4   5   5   5   7   7   7   8   8   8
20 FT wind gust.5   5   5   8   8   8   13  13  13  16  16  16

.MONDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....31-35.
Max humidity........84-89 percent.
Wind (20 ft)........Northwest winds 4 to 8 mph with gusts to around
                    16 mph in the evening becoming light.
Ridgetop wind.......Northwest winds 5 to 10 mph with gusts to around
                    19 mph in the evening becoming light.
Mixing height.......700 ft AGL in the evening becoming near surface
                    overnight.
Transport winds.....Northwest winds 10 to 15 mph shifting to the
                    southwest 5 to 8 mph late in the evening.
Haines Index........2 increasing to 4 overnight or very low to low
                    potential for large plume dominated fire growth.

.TUESDAY...

Sky/weather.........Sunny (20-30 percent) then becoming mostly
                    cloudy (65-75 percent) in the afternoon. Rain
                    showers likely late in the afternoon.
CWR.................6 percent.
LAL.................1.
Max temperature.....58-62.
Min humidity........40-45 percent.
Wind (20 ft)........Light winds becoming west 5 to 8 mph late in
                    the morning.
Ridgetop wind.......Light winds becoming west 6 to 10 mph late in
                    the morning.
Mixing height.......Near surface rising to 5200 ft AGL in the
                    afternoon.
Transport winds.....Southwest winds 5 to 7 mph shifting to the
                    west 9 to 15 mph late in the morning.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Perry
Requested by...Jessie Creech
Type of request...PRESCRIBED
.TAG 2414578.0/PDT
.DELDT 05/19/24
.FormatterVersion 2.0.0
.EMAIL natalie.kuntz@usda.gov,jessie.creech@usda.gov