COLUMBIA GORGE GRADIENT FORECASTS
WEATHER NORTHWEST
WEATHER OPERATIONS CENTER
500 PM PDT FRI APR 19 2024
Data from 18Z Fri 19 Apr NAM Model
Positive gradients are onshore or westerly,
negative gradients are offshore or easterly.
Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX
(GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient
============== ======== ======== ======== ======== ======== ======== ========
18Z Fri 19 Apr 1024.5 1023.1 1019.3 1016.4 -8.1 -5.2 -3.8
19Z Fri 19 Apr 1022.7 1021.6 1018.6 1016.1 -6.6 -4.1 -3.0
20Z Fri 19 Apr 1022.4 1021.0 1018.3 1015.5 -6.9 -4.1 -2.7
21Z Fri 19 Apr 1021.8 1020.6 1018.2 1015.9 -5.9 -3.6 -2.4
22Z Fri 19 Apr 1020.8 1019.6 1017.3 1015.1 -5.7 -3.5 -2.3
23Z Fri 19 Apr 1020.3 1019.2 1016.9 1014.9 -5.4 -3.4 -2.3
00Z Sat 20 Apr 1019.9 1018.9 1016.6 1014.5 -5.4 -3.3 -2.3
01Z Sat 20 Apr 1019.6 1018.8 1016.2 1014.4 -5.2 -3.4 -2.6
02Z Sat 20 Apr 1019.5 1018.7 1015.8 1014.0 -5.5 -3.7 -2.9
03Z Sat 20 Apr 1019.1 1018.3 1015.2 1013.6 -5.5 -3.9 -3.1
04Z Sat 20 Apr 1019.5 1018.6 1015.5 1013.7 -5.8 -4.0 -3.1
05Z Sat 20 Apr 1020.3 1019.2 1015.8 1013.9 -6.4 -4.5 -3.4
06Z Sat 20 Apr 1020.3 1019.1 1015.6 1013.7 -6.6 -4.7 -3.5
07Z Sat 20 Apr 1020.2 1018.9 1015.2 1013.4 -6.8 -5.0 -3.7
08Z Sat 20 Apr 1020.0 1018.6 1014.7 1013.1 -6.9 -5.3 -3.9
09Z Sat 20 Apr 1020.0 1018.5 1014.4 1013.0 -7.0 -5.6 -4.1
10Z Sat 20 Apr 1020.1 1018.6 1014.4 1013.3 -6.8 -5.7 -4.2
11Z Sat 20 Apr 1020.1 1018.5 1014.3 1013.4 -6.7 -5.8 -4.2
12Z Sat 20 Apr 1020.5 1018.9 1014.5 1013.6 -6.9 -6.0 -4.4
13Z Sat 20 Apr 1021.0 1019.2 1014.6 1014.0 -7.0 -6.4 -4.6
14Z Sat 20 Apr 1021.7 1020.0 1015.1 1014.7 -7.0 -6.6 -4.9
15Z Sat 20 Apr 1021.1 1019.7 1015.0 1014.5 -6.6 -6.1 -4.7
16Z Sat 20 Apr 1020.6 1019.2 1014.7 1014.1 -6.5 -5.9 -4.5
17Z Sat 20 Apr 1020.3 1019.0 1014.5 1014.8 -5.5 -5.8 -4.5
18Z Sat 20 Apr 1019.5 1018.3 1014.3 1015.7 -3.8 -5.2 -4.0
19Z Sat 20 Apr 1018.7 1017.5 1014.6 1017.3 -1.4 -4.1 -2.9
20Z Sat 20 Apr 1017.6 1016.6 1014.9 1018.2 +0.6 -2.7 -1.7
21Z Sat 20 Apr 1016.7 1016.3 1016.0 1019.0 +2.3 -0.7 -0.3
22Z Sat 20 Apr 1016.2 1016.2 1017.9 1020.0 +3.8 +1.7 +1.7
23Z Sat 20 Apr 1015.5 1016.1 1019.9 1021.0 +5.5 +4.4 +3.8
00Z Sun 21 Apr 1015.3 1017.0 1020.8 1022.1 +6.8 +5.5 +3.8
01Z Sun 21 Apr 1015.3 1018.3 1021.3 1023.2 +7.9 +6.0 +3.0
02Z Sun 21 Apr 1015.8 1019.4 1022.1 1024.1 +8.3 +6.3 +2.7
03Z Sun 21 Apr 1015.9 1020.5 1022.9 1024.9 +9.0 +7.0 +2.4
04Z Sun 21 Apr 1016.8 1021.5 1023.9 1025.6 +8.8 +7.1 +2.4
05Z Sun 21 Apr 1018.6 1023.2 1025.2 1026.8 +8.2 +6.6 +2.0
06Z Sun 21 Apr 1020.2 1024.3 1026.0 1027.5 +7.3 +5.8 +1.7
Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX
(GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient
============== ======== ======== ======== ======== ======== ======== ========
07Z Sun 21 Apr 1021.8 1025.2 1026.7 1028.0 +6.2 +4.9 +1.5
08Z Sun 21 Apr 1022.8 1026.0 1027.2 1028.2 +5.4 +4.4 +1.2
09Z Sun 21 Apr 1023.7 1026.8 1027.7 1028.5 +4.8 +4.0 +0.9
10Z Sun 21 Apr 1024.8 1027.6 1028.4 1029.0 +4.2 +3.6 +0.8
11Z Sun 21 Apr 1025.4 1028.0 1028.6 1029.0 +3.6 +3.2 +0.6
12Z Sun 21 Apr 1026.1 1028.6 1029.0 1029.3 +3.2 +2.9 +0.4
13Z Sun 21 Apr 1026.5 1029.0 1029.2 1029.4 +2.9 +2.7 +0.2
14Z Sun 21 Apr 1027.3 1029.7 1029.9 1029.9 +2.6 +2.6 +0.2
15Z Sun 21 Apr 1027.1 1029.5 1030.2 1030.0 +2.9 +3.1 +0.7
16Z Sun 21 Apr 1026.8 1029.4 1030.3 1030.0 +3.2 +3.5 +0.9
17Z Sun 21 Apr 1027.0 1029.6 1030.6 1030.3 +3.3 +3.6 +1.0
18Z Sun 21 Apr 1026.8 1029.4 1030.5 1030.3 +3.5 +3.7 +1.1
19Z Sun 21 Apr 1026.6 1029.1 1030.5 1030.1 +3.5 +3.9 +1.4
20Z Sun 21 Apr 1025.9 1028.2 1029.9 1029.4 +3.5 +4.0 +1.7
21Z Sun 21 Apr 1025.5 1027.5 1029.2 1028.7 +3.2 +3.7 +1.7
22Z Sun 21 Apr 1025.1 1027.0 1028.7 1028.2 +3.1 +3.6 +1.7
23Z Sun 21 Apr 1024.0 1025.9 1027.7 1027.3 +3.3 +3.7 +1.8
00Z Mon 22 Apr 1023.6 1025.4 1027.3 1026.8 +3.2 +3.7 +1.9
01Z Mon 22 Apr 1023.2 1024.9 1026.8 1026.3 +3.1 +3.6 +1.9
02Z Mon 22 Apr 1023.2 1024.7 1026.6 1026.1 +2.9 +3.4 +1.9
03Z Mon 22 Apr 1023.1 1024.6 1026.3 1025.9 +2.8 +3.2 +1.7
04Z Mon 22 Apr 1023.2 1024.6 1026.1 1025.6 +2.4 +2.9 +1.5
05Z Mon 22 Apr 1023.7 1024.7 1026.1 1025.5 +1.8 +2.4 +1.4
06Z Mon 22 Apr 1023.8 1024.5 1025.8 1025.1 +1.3 +2.0 +1.3
07Z Mon 22 Apr 1023.8 1024.3 1025.4 1024.6 +0.8 +1.6 +1.1
08Z Mon 22 Apr 1023.6 1023.9 1024.7 1023.9 +0.3 +1.1 +0.8
09Z Mon 22 Apr 1023.6 1023.6 1024.3 1023.4 -0.2 +0.7 +0.7
10Z Mon 22 Apr 1023.9 1023.8 1024.1 1023.0 -0.9 +0.2 +0.3
11Z Mon 22 Apr 1023.7 1023.4 1023.5 1022.4 -1.3 -0.2 +0.1
12Z Mon 22 Apr 1023.7 1023.4 1023.2 1021.9 -1.8 -0.5 -0.2
13Z Mon 22 Apr 1023.6 1023.2 1022.6 1021.3 -2.3 -1.0 -0.6
14Z Mon 22 Apr 1024.0 1023.7 1022.5 1021.1 -2.9 -1.5 -1.2
15Z Mon 22 Apr 1023.4 1023.1 1021.8 1020.5 -2.9 -1.6 -1.3
16Z Mon 22 Apr 1022.7 1022.3 1020.9 1019.7 -3.0 -1.8 -1.4
17Z Mon 22 Apr 1022.6 1022.1 1020.5 1019.2 -3.4 -2.1 -1.6
18Z Mon 22 Apr 1022.3 1021.6 1019.7 1018.4 -3.9 -2.6 -1.9
19Z Mon 22 Apr 1021.9 1021.1 1018.9 1017.6 -4.3 -3.0 -2.2
20Z Mon 22 Apr 1020.9 1020.2 1017.9 1016.6 -4.3 -3.0 -2.3
21Z Mon 22 Apr 1020.2 1019.5 1017.1 1015.7 -4.5 -3.1 -2.4
22Z Mon 22 Apr 1019.5 1018.9 1016.4 1015.0 -4.5 -3.1 -2.5
23Z Mon 22 Apr 1018.4 1017.9 1015.4 1014.1 -4.3 -3.0 -2.5
00Z Tue 23 Apr 1018.0 1017.4 1014.7 1013.4 -4.6 -3.3 -2.7
01Z Tue 23 Apr 1017.6 1017.0 1014.2 1012.9 -4.7 -3.4 -2.8
02Z Tue 23 Apr 1017.7 1017.1 1014.1 1012.7 -5.0 -3.6 -3.0
03Z Tue 23 Apr 1017.6 1017.1 1013.9 1012.5 -5.1 -3.7 -3.2
04Z Tue 23 Apr 1017.7 1017.4 1013.7 1012.3 -5.4 -4.0 -3.7
05Z Tue 23 Apr 1018.1 1017.9 1013.9 1012.3 -5.8 -4.2 -4.0
06Z Tue 23 Apr 1017.9 1017.7 1013.5 1011.8 -6.1 -4.4 -4.2
$$