COLUMBIA GORGE GRADIENT FORECASTS
WEATHER NORTHWEST
WEATHER OPERATIONS CENTER
400 AM PST SUN JAN 21 2018


Data from 06Z Sun 21 Jan 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
==============  ======== ======== ======== ======== ======== ======== ========
06Z Sun 21 Jan   1019.3   1020.5   1018.2   1017.6     -1.7     -1.1     -2.3
07Z Sun 21 Jan   1020.1   1021.0   1018.1   1017.2     -2.9     -2.0     -2.9

08Z Sun 21 Jan   1019.4   1020.2   1016.7   1015.9     -3.5     -2.7     -3.5
09Z Sun 21 Jan   1019.8   1020.7   1016.7   1015.8     -4.0     -3.1     -4.0
10Z Sun 21 Jan   1019.8   1020.6   1016.9   1016.1     -3.7     -2.9     -3.7
11Z Sun 21 Jan   1018.9   1019.6   1015.8   1015.0     -3.9     -3.1     -3.8
12Z Sun 21 Jan   1018.2   1018.5   1014.8   1013.2     -5.0     -3.4     -3.7
13Z Sun 21 Jan   1017.4   1017.4   1013.7   1011.7     -5.7     -3.7     -3.7
14Z Sun 21 Jan   1016.9   1016.7   1012.1   1011.0     -5.9     -4.8     -4.6
15Z Sun 21 Jan   1016.3   1015.9   1012.2   1010.2     -6.1     -4.1     -3.7
16Z Sun 21 Jan   1015.9   1015.4   1011.6   1010.2     -5.7     -4.3     -3.8
17Z Sun 21 Jan   1016.5   1016.4   1012.2   1010.6     -5.9     -4.3     -4.2
18Z Sun 21 Jan   1015.8   1015.2   1012.0   1011.3     -4.5     -3.8     -3.2
19Z Sun 21 Jan   1014.5   1014.2   1012.0   1011.8     -2.7     -2.5     -2.2
20Z Sun 21 Jan   1013.9   1013.3   1012.0   1012.1     -1.8     -1.9     -1.3
21Z Sun 21 Jan   1012.8   1012.7   1012.2   1013.4     +0.6     -0.6     -0.5
22Z Sun 21 Jan   1012.3   1012.6   1012.8   1014.3     +2.0     +0.5     +0.2
23Z Sun 21 Jan   1012.1   1013.0   1013.7   1015.0     +2.9     +1.6     +0.7
00Z Mon 22 Jan   1012.5   1014.1   1014.9   1016.1     +3.6     +2.4     +0.8
01Z Mon 22 Jan   1013.4   1015.3   1015.8   1016.9     +3.5     +2.4     +0.5
02Z Mon 22 Jan   1014.8   1017.0   1016.8   1017.6     +2.8     +2.0     -0.2
03Z Mon 22 Jan   1015.9   1018.1   1017.5   1018.3     +2.4     +1.6     -0.6
04Z Mon 22 Jan   1016.9   1019.0   1018.2   1019.1     +2.2     +1.3     -0.8
05Z Mon 22 Jan   1017.9   1020.0   1018.9   1019.9     +2.0     +1.0     -1.1
06Z Mon 22 Jan   1018.6   1020.5   1019.3   1020.1     +1.5     +0.7     -1.2
07Z Mon 22 Jan   1019.3   1021.2   1020.0   1020.6     +1.3     +0.7     -1.2

Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX (GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient ============== ======== ======== ======== ======== ======== ======== ======== 08Z Mon 22 Jan 1020.0 1021.9 1020.6 1021.2 +1.2 +0.6 -1.3 09Z Mon 22 Jan 1020.8 1022.5 1021.2 1021.8 +1.0 +0.4 -1.3 10Z Mon 22 Jan 1021.6 1023.2 1021.9 1022.5 +0.9 +0.3 -1.3 11Z Mon 22 Jan 1021.7 1023.3 1022.0 1022.7 +1.0 +0.3 -1.3 12Z Mon 22 Jan 1022.2 1023.8 1022.4 1023.1 +0.9 +0.2 -1.4 13Z Mon 22 Jan 1022.8 1024.4 1023.0 1023.6 +0.8 +0.2 -1.4 14Z Mon 22 Jan 1023.4 1024.8 1023.5 1023.9 +0.5 +0.1 -1.3 15Z Mon 22 Jan 1023.9 1025.2 1023.8 1024.3 +0.4 -0.1 -1.4 16Z Mon 22 Jan 1023.9 1025.3 1023.9 1024.5 +0.6 +0.0 -1.4 17Z Mon 22 Jan 1024.5 1025.9 1024.8 1025.5 +1.0 +0.3 -1.1 18Z Mon 22 Jan 1024.8 1026.0 1025.3 1026.4 +1.6 +0.5 -0.7 19Z Mon 22 Jan 1024.6 1026.0 1025.6 1026.8 +2.2 +1.0 -0.4 20Z Mon 22 Jan 1024.2 1025.5 1025.8 1026.7 +2.5 +1.6 +0.3 21Z Mon 22 Jan 1023.8 1025.0 1026.1 1026.7 +2.9 +2.3 +1.1 22Z Mon 22 Jan 1023.5 1025.0 1026.3 1026.8 +3.3 +2.8 +1.3 23Z Mon 22 Jan 1023.2 1024.9 1026.1 1026.6 +3.4 +2.9 +1.2 00Z Tue 23 Jan 1023.8 1025.6 1026.4 1026.8 +3.0 +2.6 +0.8 01Z Tue 23 Jan 1024.3 1026.1 1026.4 1026.4 +2.1 +2.1 +0.3 02Z Tue 23 Jan 1025.2 1026.8 1026.7 1026.4 +1.2 +1.5 -0.1 03Z Tue 23 Jan 1025.7 1027.2 1026.8 1026.1 +0.4 +1.1 -0.4 04Z Tue 23 Jan 1025.8 1027.2 1026.1 1025.3 -0.5 +0.3 -1.1 05Z Tue 23 Jan 1026.4 1027.5 1025.9 1024.8 -1.6 -0.5 -1.6 06Z Tue 23 Jan 1026.8 1027.3 1025.5 1023.6 -3.2 -1.3 -1.8 07Z Tue 23 Jan 1026.7 1027.1 1024.5 1022.6 -4.1 -2.2 -2.6 08Z Tue 23 Jan 1026.8 1026.6 1023.7 1022.1 -4.7 -3.1 -2.9 09Z Tue 23 Jan 1026.3 1026.3 1022.9 1021.5 -4.8 -3.4 -3.4 10Z Tue 23 Jan 1026.7 1026.0 1022.3 1020.9 -5.8 -4.4 -3.7 11Z Tue 23 Jan 1025.9 1025.0 1020.7 1020.3 -5.6 -5.2 -4.3 12Z Tue 23 Jan 1025.4 1024.1 1020.1 1019.6 -5.8 -5.3 -4.0 13Z Tue 23 Jan 1025.1 1023.8 1019.7 1018.7 -6.4 -5.4 -4.1 14Z Tue 23 Jan 1024.8 1023.5 1020.0 1018.1 -6.7 -4.8 -3.5 15Z Tue 23 Jan 1024.2 1022.5 1019.6 1017.7 -6.5 -4.6 -2.9 16Z Tue 23 Jan 1023.6 1022.4 1018.8 1016.5 -7.1 -4.8 -3.6 17Z Tue 23 Jan 1023.9 1022.5 1018.6 1016.8 -7.1 -5.3 -3.9 18Z Tue 23 Jan 1023.6 1022.1 1017.9 1016.4 -7.2 -5.7 -4.2 19Z Tue 23 Jan 1022.9 1021.0 1017.0 1015.5 -7.4 -5.9 -4.0 20Z Tue 23 Jan 1021.4 1020.0 1016.1 1014.9 -6.5 -5.3 -3.9 21Z Tue 23 Jan 1020.6 1019.4 1015.2 1014.3 -6.3 -5.4 -4.2 22Z Tue 23 Jan 1019.9 1019.0 1014.5 1014.3 -5.6 -5.4 -4.5 23Z Tue 23 Jan 1019.0 1017.9 1013.9 1013.4 -5.6 -5.1 -4.0 00Z Wed 24 Jan 1018.4 1017.0 1013.4 1012.6 -5.8 -5.0 -3.6 01Z Wed 24 Jan 1017.7 1016.6 1012.5 1011.9 -5.8 -5.2 -4.1 02Z Wed 24 Jan 1017.2 1016.4 1012.4 1011.1 -6.1 -4.8 -4.0 03Z Wed 24 Jan 1016.8 1016.0 1012.4 1009.8 -7.0 -4.4 -3.6 04Z Wed 24 Jan 1015.9 1015.1 1011.0 1009.6 -6.3 -4.9 -4.1 05Z Wed 24 Jan 1015.6 1014.8 1010.2 1009.1 -6.5 -5.4 -4.6 06Z Wed 24 Jan 1015.0 1014.2 1010.1 1009.5 -5.5 -4.9 -4.1 07Z Wed 24 Jan 1014.4 1013.6 1009.6 1009.5 -4.9 -4.8 -4.0

Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX (GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient ============== ======== ======== ======== ======== ======== ======== ======== 08Z Wed 24 Jan 1013.5 1012.5 1009.2 1009.6 -3.9 -4.3 -3.3 09Z Wed 24 Jan 1012.6 1012.1 1009.7 1008.0 -4.6 -2.9 -2.4 10Z Wed 24 Jan 1012.8 1012.4 1009.3 1008.4 -4.4 -3.5 -3.1 11Z Wed 24 Jan 1011.8 1012.0 1008.8 1007.1 -4.7 -3.0 -3.2 12Z Wed 24 Jan 1011.5 1011.6 1007.9 1006.6 -4.9 -3.6 -3.7 13Z Wed 24 Jan 1011.0 1011.0 1007.7 1005.4 -5.6 -3.3 -3.3 14Z Wed 24 Jan 1011.0 1010.8 1007.1 1004.5 -6.5 -3.9 -3.7 15Z Wed 24 Jan 1010.7 1009.8 1006.6 1004.3 -6.4 -4.1 -3.2 16Z Wed 24 Jan 1009.6 1009.0 1005.4 1002.9 -6.7 -4.2 -3.6 17Z Wed 24 Jan 1009.6 1008.9 1005.3 1002.7 -6.9 -4.3 -3.6 18Z Wed 24 Jan 1009.0 1007.8 1004.3 1002.1 -6.9 -4.7 -3.5 $$