A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >
FWUS46 KPQR 200904
AVGPQR
Avalanche Weather Guidance
National Weather Service Portland OR
203 AM PDT Fri Mar 20 2026
...Mount St. Helens...
Date Friday 03/20/26 Saturday 03/21/26
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover BK OV OV OV OV OV OV OV OV BK BK BK FW FW FW FW SC
Cloud Cover (%) 70 80 80 95 95 90 85 75 75 65 50 50 25 25 10 10 40
Temperature 40 40 40 41 39 37 34 31 28 26 29 33 32 28 26 25 24
Max/Min Temp 41 26 34 23
Wind Dir SW SW SW W W W W W NW NW W W NW NW NW NW NW
Wind (mph) 13 13 12 11 12 11 10 11 11 11 12 16 17 11 8 6 8
Wind Gust (mph) 23 21 21 21 21 19 17 18 19 19 19 26 27 18
Precip Prob (%) 40 70 70 100 90 50 40 30 50 50 30 30 10 10 10 10 20
Precip Type R R R R R S S S S S S S S S S
6 Hour QPF 0.27 0.29 0.18 0.09 0.01 0.00 0.00 0.00
6 Hour Snow 0.0 0.0 0.2 0.6 0.1 0.0 0.0 0.0
12 Hour Snow 0.0 0.8 0.1 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.0 1.2 0.4 0.0
6 Hour Ice 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Snow Level (kft) 9.3 9.2 8.9 8.4 7.7 6.5 5.3 3.9 2.7 1.8 2.0 2.5 2.7 2.2 1.5 1.4 1.2
...Mount Hood...
Date Friday 03/20/26 Saturday 03/21/26
Time (LT) 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
5a 8a 11a 2p 5p 8p 11p 2a 5a 8a 11a 2p 5p 8p 11p 2a 5a
Cloud Cover FW SC SC BK OV OV OV OV OV OV SC SC FW FW FW FW FW
Cloud Cover (%) 25 30 30 55 75 85 85 85 70 70 45 45 10 5 10 5 10
Temperature 38 39 42 44 40 37 34 32 27 24 28 29 28 24 22 20 19
Max/Min Temp 45 24 32 18
Wind Dir SW SW SW SW W W W W W W W W W W W W W
Wind (mph) 20 21 23 26 26 20 17 19 23 21 21 24 26 19 14 12 11
Wind Gust (mph) 31 31 37 41 40 32 26 29 33 32 33 35 37 28 23 19 18
Precip Prob (%) 10 20 20 40 70 70 60 60 60 60 20 20 10 10 5 5 5
Precip Type S S S S S S S S S S S
6 Hour QPF 0.00 0.08 0.17 0.22 0.06 0.01 0.00 0.00
6 Hour Snow 0.0 0.0 0.4 1.2 0.6 0.1 0.0 0.0
12 Hour Snow 0.0 1.6 0.7 0.0
Low End Snow 0.0 0.0 0.0 0.0
High End Snow 0.2 1.8 1.2 0.0
6 Hour Ice 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Snow Level (kft) 9.3 9.0 8.9 8.7 8.6 8.1 7.1 6.0 4.1 2.7 2.8 2.7 2.6 2.3 2.0 2.0 1.7
$$
--- Precip Type Codes ---
CODE TYPE
T Thunderstorms
R Rain
S Snow
I Sleet
Z Freezing Rain
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