113  
FNUS76 KPQR 101852  
FWSPQR  
 
SPOT FORECAST FOR PRECISION CASTPARTS...CLACKAMAS FIRE DISTRICT 1  
NATIONAL WEATHER SERVICE PORTLAND OR  
1152 AM PDT SAT MAY 10 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 1200 PDT ON MAY 10.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
DRY CONDITIONS WILL CONTINUE THROUGH THE REST OF TODAY  
WITH A MIX OF HIGH CLOUDS AND SUN. LIGHT AND VARIABLE WINDS AROUND 5  
MPH OR LESS WILL BECOME SOUTHWESTERLY (BLOWING FROM SOUTHWEST TO  
NORTHEAST) AROUND 5-7 MPH AFTER 1 PM WITH GUSTS UP TO 15 MPH. IF THERE  
ARE ANY AIRBORNE TOXINS ASSOCIATED WITH THIS INCIDENT, EXPECT THESE  
TOXINS TO BLOW NORTHEASTWARD SLOWLY.  
 
MOSTLY CLOUDY TONIGHT AND TOMORROW WITH OCCASIONAL LIGHT RAIN SHOWERS.  
   
REST OF TODAY  
 
SKY/WEATHER.........PARTLY SUNNY.  
CHANCE OF PCPN......10 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 69.  
MIN HUMIDITY........39 PERCENT.  
DEWPOINT............42.  
SURFACE WINDS.......SOUTHWEST WINDS AROUND 6 MPH.  
MIXING HEIGHT.......5500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 12 MPH.  
RAINFALL AMOUNT.....0.00 INCHES.  
CEILING (KFT).......25.  
VISIBILITY (SM)......10.  
 
TIME (PDT) 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........51 58 70 76 83 82  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 10 10 10 10 0  
CHC OF THDR (%).0 0 0 0 0 0  
TEMP............65 67 68 68 69 68  
DEWPOINT........44 43 41 41 42 42  
RH..............46 42 37 37 37 39  
SURFACE WND DIR.SW SW SW SW SW W  
SURFACE WND SPD.6 6 6 6 6 6  
SURFACE WND GST.13 13 13 13 13 12  
MIX HGT (KFT)...4.0 4.8 5.2 5.4 5.5 5.2  
TRANSP WIND DIR.SW SW SW SW W W  
TRANSP WIND SPD.10 10 10 10 12 10  
CEILING (KFT)...25 25 25 25 25 25  
VISIBILITY (SM).10 10 10 10 10 10  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN EARLY IN  
THE MORNING.  
CHANCE OF PCPN......20 PERCENT.  
CHANCE OF THUNDER...1 PERCENT.  
MIN TEMPERATURE.....AROUND 51.  
MAX HUMIDITY........81 PERCENT.  
DEWPOINT............44.  
SURFACE WINDS.......WEST WINDS AROUND 6 MPH EARLY IN THE EVENING  
BECOMING LIGHT.  
MIXING HEIGHT.......700 FT AGL.  
TRANSPORT WINDS.....WEST 6 TO 9 MPH SHIFTING TO THE NORTHWEST 3 TO  
6 MPH IN THE LATE EVENING AND OVERNIGHT, THEN  
SHIFTING TO THE SOUTHWEST OVERNIGHT.  
RAINFALL AMOUNT.....0.02 INCHES.  
CEILING (KFT).......25 DECREASING TO 5.8.  
VISIBILITY (SM)......10.  
 
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........84 86 84 78 82 83 78 82 84 89 91 88  
WEATHER COV..... SCH  
WEATHER TYPE.... RN  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 10 20  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............67 66 62 60 58 57 56 54 54 53 52 52  
DEWPOINT........43 43 43 44 44 45 45 44 45 46 46 46  
RH..............41 44 50 56 60 64 67 70 72 76 79 81  
SURFACE WND DIR.W W W W W W W SW S SW SW SW  
SURFACE WND SPD.6 5 5 4 4 3 3 3 3 3 3 3  
SURFACE WND GST.12 10 10 8 7 7 7 7 7 7 7 8  
MIX HGT (KFT)...4.5 1.9 0.8 0.7 0.8 0.9 1.2 1.3 2.1 2.2 2.1 1.5  
TRANSP WIND DIR.W W W NW NW NW NW W SW S S SW  
TRANSP WIND SPD.9 8 7 6 6 6 5 3 3 3 5 6  
CEILING (KFT)...25 25 25 25 8.5 7.3 7.3 5.8 5.8 5.8 5.8 5.8  
VISIBILITY (SM).10 10 10 10 10 10 10 10 10 10 10 10  
   
SUNDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN IN THE MORNING,  
THEN RAIN SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......80 PERCENT.  
CHANCE OF THUNDER...15 PERCENT.  
MAX TEMPERATURE.....AROUND 63.  
MIN HUMIDITY........59 PERCENT.  
DEWPOINT............46.  
SURFACE WINDS.......LIGHT WINDS BECOMING SOUTHWEST 6 TO 9 MPH EARLY  
IN THE MORNING.  
MIXING HEIGHT.......5500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 7 TO 16 MPH.  
RAINFALL AMOUNT.....0.06 INCHES.  
CEILING (KFT).......5.8 DECREASING TO 4.5 EARLY IN THE MORNING,  
THEN INCREASING TO 5.8 LATE IN THE MORNING  
DECREASING TO 4.5 LATE IN THE MORNING  
INCREASING TO 5.8.  
VISIBILITY (SM)......10.  
 
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........87 92 84 80 83 84 87 83 84 84 86 86  
WEATHER COV.....SCH SCH SCH CHC CHC CHC LKY LKY LKY DEF  
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RW  
TSTM COV........ SCH  
CHC OF PCPN (%).20 10 10 20 20 30 30 50 60 60 60 80  
CHC OF THDR (%).0 0 0 0 0 10 10 10 10 10 10 20  
TEMP............51 51 53 53 56 57 58 60 60 61 61 59  
DEWPOINT........46 46 47 45 47 46 45 46 45 47 47 46  
RH..............83 83 81 74 71 66 62 60 58 59 60 63  
SURFACE WND DIR.SW S S S S SW S SW SW SW SW SW  
SURFACE WND SPD.4 5 6 6 8 8 9 9 9 8 8 8  
SURFACE WND GST.8 10 12 14 15 16 16 17 16 16 16 14  
MIX HGT (KFT)...1.5 1.5 2.3 3.1 3.4 4.3 4.7 5.4 5.2 5.5 4.4 4.3  
TRANSP WIND DIR.S S S S S S S S S SW SW SW  
TRANSP WIND SPD.7 7 9 10 12 15 15 16 16 16 15 14  
CEILING (KFT)...5.8 5.8 4.5 5.8 4.5 5.8 5.8 5.8 5.8 5.8 5.8 5.8  
VISIBILITY (SM).10 10 10 10 10 10 10 10 10 10 10 10  
 
 
FORECASTER...KRANZ  
REQUESTED BY...BC302  
TYPE OF REQUEST...HAZMAT  
.TAG 2513696.0/PQR  
.DELDT 05/10/25  
.FORMATTERVERSION 2.0.0  
.EMAIL ACOSTANZO@CLACKAMAS.US,MORGAN.WEST@CLACKAMASFIRE.COM  
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