NAM GORGE GRADIENT FORECASTS
WEATHER NORTHWEST
WEATHER OPERATIONS CENTER
400 PM PDT WED APR 16 2025
Data from 18Z Wed 16 Apr NAM Model
Time Day Date AST PDX YKM AST-PDX PDX-YKM AST-YKM
(GMT) Pressure Pressure Pressure Gradient Gradient Gradient
============== ======== ======== ======== ======== ======== ========
18Z Wed 16 Apr 1019.1 1018.5 1013.9 +0.6 +4.6 +5.2
19Z Wed 16 Apr 1018.5 1017.8 1013.4 +0.7 +4.4 +5.1
20Z Wed 16 Apr 1018.5 1017.5 1013.7 +1.0 +3.8 +4.8
21Z Wed 16 Apr 1018.3 1016.8 1012.8 +1.5 +4.0 +5.5
22Z Wed 16 Apr 1017.6 1015.8 1012.6 +1.8 +3.2 +5.0
23Z Wed 16 Apr 1016.8 1014.6 1011.9 +2.2 +2.7 +4.9
00Z Thu 17 Apr 1017.2 1014.8 1013.6 +2.4 +1.2 +3.6
01Z Thu 17 Apr 1017.6 1015.4 1016.3 +2.2 -0.9 +1.3
02Z Thu 17 Apr 1018.0 1015.8 1016.9 +2.2 -1.1 +1.1
03Z Thu 17 Apr 1018.0 1016.0 1017.6 +2.0 -1.6 +0.4
04Z Thu 17 Apr 1018.3 1016.3 1018.6 +2.0 -2.3 -0.3
05Z Thu 17 Apr 1019.0 1017.1 1019.8 +1.9 -2.7 -0.8
06Z Thu 17 Apr 1019.1 1017.9 1020.1 +1.2 -2.2 -1.0
07Z Thu 17 Apr 1019.3 1018.5 1020.7 +0.8 -2.2 -1.4
08Z Thu 17 Apr 1019.5 1018.6 1020.8 +0.9 -2.2 -1.3
09Z Thu 17 Apr 1019.8 1019.0 1021.2 +0.8 -2.2 -1.4
10Z Thu 17 Apr 1020.1 1019.4 1021.7 +0.7 -2.3 -1.6
11Z Thu 17 Apr 1020.3 1019.6 1021.8 +0.7 -2.2 -1.5
12Z Thu 17 Apr 1020.4 1019.8 1022.0 +0.6 -2.2 -1.6
13Z Thu 17 Apr 1020.5 1019.9 1022.0 +0.6 -2.1 -1.5
14Z Thu 17 Apr 1021.2 1020.5 1022.5 +0.7 -2.0 -1.3
15Z Thu 17 Apr 1021.3 1020.8 1021.9 +0.5 -1.1 -0.6
16Z Thu 17 Apr 1021.3 1020.8 1021.2 +0.5 -0.4 +0.1
17Z Thu 17 Apr 1021.4 1021.1 1021.2 +0.3 -0.1 +0.2
18Z Thu 17 Apr 1021.3 1021.0 1020.7 +0.3 +0.3 +0.6
19Z Thu 17 Apr 1021.1 1020.7 1020.2 +0.4 +0.5 +0.9
20Z Thu 17 Apr 1020.6 1020.0 1019.5 +0.6 +0.5 +1.1
21Z Thu 17 Apr 1020.4 1019.7 1019.0 +0.7 +0.7 +1.4
22Z Thu 17 Apr 1020.3 1019.4 1018.5 +0.9 +0.9 +1.8
23Z Thu 17 Apr 1019.8 1018.7 1017.7 +1.1 +1.0 +2.1
00Z Fri 18 Apr 1019.7 1018.6 1017.7 +1.1 +0.9 +2.0
01Z Fri 18 Apr 1019.8 1018.6 1017.5 +1.2 +1.1 +2.3
02Z Fri 18 Apr 1020.3 1018.9 1017.8 +1.4 +1.1 +2.5
03Z Fri 18 Apr 1020.5 1018.9 1018.3 +1.6 +0.6 +2.2
04Z Fri 18 Apr 1020.5 1019.0 1019.1 +1.5 -0.1 +1.4
05Z Fri 18 Apr 1020.6 1019.3 1020.0 +1.3 -0.7 +0.6
06Z Fri 18 Apr 1020.7 1019.4 1020.3 +1.3 -0.9 +0.4
Time Day Date AST PDX YKM AST-PDX PDX-YKM AST-YKM
(GMT) Pressure Pressure Pressure Gradient Gradient Gradient
============== ======== ======== ======== ======== ======== ========
07Z Fri 18 Apr 1020.7 1019.6 1020.6 +1.1 -1.0 +0.1
08Z Fri 18 Apr 1020.6 1019.6 1020.9 +1.0 -1.3 -0.3
09Z Fri 18 Apr 1020.7 1019.8 1021.7 +0.9 -1.9 -1.0
10Z Fri 18 Apr 1021.0 1020.2 1022.5 +0.8 -2.3 -1.5
11Z Fri 18 Apr 1021.0 1020.4 1022.9 +0.6 -2.5 -1.9
12Z Fri 18 Apr 1021.1 1020.8 1023.5 +0.3 -2.7 -2.4
13Z Fri 18 Apr 1021.3 1021.3 1024.1 +0.0 -2.8 -2.8
14Z Fri 18 Apr 1021.9 1022.1 1025.0 -0.2 -2.9 -3.1
15Z Fri 18 Apr 1021.8 1022.2 1024.8 -0.4 -2.6 -3.0
16Z Fri 18 Apr 1021.5 1022.1 1024.4 -0.6 -2.3 -2.9
17Z Fri 18 Apr 1021.7 1022.4 1024.4 -0.7 -2.0 -2.7
18Z Fri 18 Apr 1021.9 1022.4 1024.1 -0.5 -1.7 -2.2
19Z Fri 18 Apr 1021.9 1022.3 1023.7 -0.4 -1.4 -1.8
20Z Fri 18 Apr 1021.6 1021.6 1022.8 +0.0 -1.2 -1.2
21Z Fri 18 Apr 1021.8 1021.3 1022.2 +0.5 -0.9 -0.4
22Z Fri 18 Apr 1022.2 1021.1 1021.7 +1.1 -0.6 +0.5
23Z Fri 18 Apr 1021.8 1020.4 1020.4 +1.4 +0.0 +1.4
00Z Sat 19 Apr 1021.7 1020.1 1019.7 +1.6 +0.4 +2.0
01Z Sat 19 Apr 1021.6 1019.7 1019.1 +1.9 +0.6 +2.5
02Z Sat 19 Apr 1021.8 1019.7 1019.0 +2.1 +0.7 +2.8
03Z Sat 19 Apr 1021.9 1019.6 1018.8 +2.3 +0.8 +3.1
04Z Sat 19 Apr 1022.0 1019.6 1018.8 +2.4 +0.8 +3.2
05Z Sat 19 Apr 1022.2 1019.8 1018.9 +2.4 +0.9 +3.3
06Z Sat 19 Apr 1022.0 1019.7 1018.6 +2.3 +1.1 +3.4
07Z Sat 19 Apr 1021.9 1019.7 1018.3 +2.2 +1.4 +3.6
08Z Sat 19 Apr 1021.8 1019.5 1017.7 +2.3 +1.8 +4.1
09Z Sat 19 Apr 1021.9 1019.7 1017.7 +2.2 +2.0 +4.2
10Z Sat 19 Apr 1022.2 1020.4 1017.8 +1.8 +2.6 +4.4
11Z Sat 19 Apr 1021.9 1020.6 1017.5 +1.3 +3.1 +4.4
12Z Sat 19 Apr 1022.0 1020.9 1017.4 +1.1 +3.5 +4.6
13Z Sat 19 Apr 1022.2 1021.1 1017.4 +1.1 +3.7 +4.8
14Z Sat 19 Apr 1022.9 1022.0 1018.0 +0.9 +4.0 +4.9
15Z Sat 19 Apr 1023.2 1022.3 1017.7 +0.9 +4.6 +5.5
16Z Sat 19 Apr 1023.4 1022.7 1017.3 +0.7 +5.4 +6.1
17Z Sat 19 Apr 1024.3 1023.5 1017.4 +0.8 +6.1 +6.9
18Z Sat 19 Apr 1024.8 1023.8 1017.1 +1.0 +6.7 +7.7
19Z Sat 19 Apr 1025.2 1024.1 1016.9 +1.1 +7.2 +8.3
20Z Sat 19 Apr 1025.4 1024.2 1016.5 +1.2 +7.7 +8.9
21Z Sat 19 Apr 1025.7 1024.3 1016.4 +1.4 +7.9 +9.3
22Z Sat 19 Apr 1026.3 1024.3 1016.3 +2.0 +8.0 +10.0
23Z Sat 19 Apr 1026.1 1023.9 1015.6 +2.2 +8.3 +10.5
00Z Sun 20 Apr 1026.3 1023.9 1015.6 +2.4 +8.3 +10.7
01Z Sun 20 Apr 1026.4 1024.3 1015.7 +2.1 +8.6 +10.7
02Z Sun 20 Apr 1026.7 1025.1 1016.3 +1.6 +8.8 +10.4
03Z Sun 20 Apr 1026.8 1025.7 1016.8 +1.1 +8.9 +10.0
04Z Sun 20 Apr 1027.0 1026.1 1017.7 +0.9 +8.4 +9.3
05Z Sun 20 Apr 1027.5 1026.7 1018.9 +0.8 +7.8 +8.6
06Z Sun 20 Apr 1027.4 1026.9 1019.3 +0.5 +7.6 +8.1