GRADIENT STACKING FORECASTS
WEATHER NORTHWEST
WEATHER OPERATIONS CENTER
900 PM PST SAT FEB 17 2018


Data from 00Z Sun 18 Feb NAM Model

Time Day Date      ONP      SLE      RDM   ONP-SLE  SLE-RDM  ONP-RDM
    (GMT)       Pressure Pressure Pressure Gradient Gradient Gradient Remarks
==============  ======== ======== ======== ======== ======== ======== =======
00Z Sun 18 Feb   1013.5   1011.0   1004.6    +2.5     +6.4     +8.9   GSE
01Z Sun 18 Feb   1013.1   1010.7   1006.1    +2.4     +4.6     +7.0   GSE
02Z Sun 18 Feb   1011.8   1010.2   1006.7    +1.6     +3.5     +5.1   GSE
03Z Sun 18 Feb   1011.8   1010.0   1006.1    +1.8     +3.9     +5.7   GSE
04Z Sun 18 Feb   1010.5   1008.6   1004.9    +1.9     +3.7     +5.6   GSE
05Z Sun 18 Feb   1011.1   1009.3   1006.2    +1.8     +3.1     +4.9   GSE
06Z Sun 18 Feb   1011.2   1009.2   1006.7    +2.0     +2.5     +4.5   GSE
07Z Sun 18 Feb   1011.4   1009.2   1006.6    +2.2     +2.6     +4.8   GSE

08Z Sun 18 Feb   1011.4   1009.2   1006.5    +2.2     +2.7     +4.9   GSE
09Z Sun 18 Feb   1010.8   1009.0   1006.1    +1.8     +2.9     +4.7   GSE
10Z Sun 18 Feb   1010.4   1008.7   1005.8    +1.7     +2.9     +4.6   GSE
11Z Sun 18 Feb   1010.4   1008.4   1005.9    +2.0     +2.5     +4.5   GSE
12Z Sun 18 Feb   1010.2   1008.4   1006.3    +1.8     +2.1     +3.9   GSE
13Z Sun 18 Feb   1010.2   1008.2   1006.2    +2.0     +2.0     +4.0
14Z Sun 18 Feb   1009.3   1008.0   1006.2    +1.3     +1.8     +3.1   GSE
15Z Sun 18 Feb   1008.9   1007.0   1006.9    +1.9     +0.1     +2.0   Favorable
16Z Sun 18 Feb   1008.5   1007.1   1006.8    +1.4     +0.3     +1.7   Favorable
17Z Sun 18 Feb   1008.8   1007.3   1007.1    +1.5     +0.2     +1.7   Favorable
18Z Sun 18 Feb   1008.9   1006.9   1005.8    +2.0     +1.1     +3.1   Favorable
19Z Sun 18 Feb   1008.9   1007.1   1006.2    +1.8     +0.9     +2.7   Favorable
20Z Sun 18 Feb   1009.3   1007.5   1005.0    +1.8     +2.5     +4.3   GSE
21Z Sun 18 Feb   1009.5   1007.5   1004.7    +2.0     +2.8     +4.8   GSE
22Z Sun 18 Feb   1010.1   1008.0   1004.8    +2.1     +3.2     +5.3   GSE
23Z Sun 18 Feb   1010.0   1008.1   1004.6    +1.9     +3.5     +5.4   GSE
00Z Mon 19 Feb   1010.0   1008.5   1004.9    +1.5     +3.6     +5.1   GSE
01Z Mon 19 Feb   1010.6   1009.0   1005.7    +1.6     +3.3     +4.9   GSE
02Z Mon 19 Feb   1011.3   1010.0   1006.8    +1.3     +3.2     +4.5   GSE
03Z Mon 19 Feb   1011.8   1010.8   1008.0    +1.0     +2.8     +3.8   GSE
04Z Mon 19 Feb   1012.3   1011.8   1010.0    +0.5     +1.8     +2.3   GSE
05Z Mon 19 Feb   1013.1   1013.6   1013.5    -0.5     +0.1     -0.4
06Z Mon 19 Feb   1014.2   1014.5   1014.9    -0.3     -0.4     -0.7
07Z Mon 19 Feb   1015.3   1015.3   1015.9    +0.0     -0.6     -0.6

Time Day Date ONP SLE RDM ONP-SLE SLE-RDM ONP-RDM (GMT) Pressure Pressure Pressure Gradient Gradient Gradient Remarks ============== ======== ======== ======== ======== ======== ======== ======= 08Z Mon 19 Feb 1016.3 1016.1 1016.7 +0.2 -0.6 -0.4 09Z Mon 19 Feb 1017.3 1017.1 1017.7 +0.2 -0.6 -0.4 10Z Mon 19 Feb 1018.5 1018.2 1018.8 +0.3 -0.6 -0.3 11Z Mon 19 Feb 1019.3 1019.1 1019.5 +0.2 -0.4 -0.2 12Z Mon 19 Feb 1020.2 1020.1 1020.7 +0.1 -0.6 -0.5 13Z Mon 19 Feb 1021.1 1021.2 1021.7 -0.1 -0.5 -0.6 14Z Mon 19 Feb 1021.9 1022.1 1022.7 -0.2 -0.6 -0.8 15Z Mon 19 Feb 1022.6 1022.9 1023.6 -0.3 -0.7 -1.0 16Z Mon 19 Feb 1023.1 1023.4 1024.2 -0.3 -0.8 -1.1 17Z Mon 19 Feb 1024.2 1024.4 1024.8 -0.2 -0.4 -0.6 18Z Mon 19 Feb 1024.8 1024.8 1024.7 +0.0 +0.1 +0.1 19Z Mon 19 Feb 1025.1 1025.0 1024.3 +0.1 +0.7 +0.8 GSE 20Z Mon 19 Feb 1025.3 1025.1 1023.9 +0.2 +1.2 +1.4 GSE 21Z Mon 19 Feb 1025.2 1025.2 1023.8 +0.0 +1.4 +1.4 22Z Mon 19 Feb 1025.5 1025.5 1024.0 +0.0 +1.5 +1.5 23Z Mon 19 Feb 1025.4 1025.1 1023.6 +0.3 +1.5 +1.8 GSE 00Z Tue 20 Feb 1025.6 1025.3 1023.7 +0.3 +1.6 +1.9 GSE 01Z Tue 20 Feb 1025.8 1025.5 1024.2 +0.3 +1.3 +1.6 GSE 02Z Tue 20 Feb 1026.2 1025.8 1025.0 +0.4 +0.8 +1.2 GSE 03Z Tue 20 Feb 1026.7 1026.4 1025.6 +0.3 +0.8 +1.1 GSE 04Z Tue 20 Feb 1026.7 1026.5 1025.9 +0.2 +0.6 +0.8 GSE 05Z Tue 20 Feb 1027.2 1027.0 1026.4 +0.2 +0.6 +0.8 GSE 06Z Tue 20 Feb 1027.6 1027.4 1026.7 +0.2 +0.7 +0.9 GSE 07Z Tue 20 Feb 1027.7 1027.9 1027.0 -0.2 +0.9 +0.7 08Z Tue 20 Feb 1027.5 1027.9 1027.4 -0.4 +0.5 +0.1 09Z Tue 20 Feb 1027.4 1027.8 1028.0 -0.4 -0.2 -0.6 10Z Tue 20 Feb 1027.4 1028.0 1028.4 -0.6 -0.4 -1.0 11Z Tue 20 Feb 1026.7 1027.5 1028.0 -0.8 -0.5 -1.3 12Z Tue 20 Feb 1026.3 1027.3 1028.1 -1.0 -0.8 -1.8 13Z Tue 20 Feb 1025.9 1027.1 1028.1 -1.2 -1.0 -2.2 14Z Tue 20 Feb 1025.9 1027.3 1028.4 -1.4 -1.1 -2.5 15Z Tue 20 Feb 1026.0 1027.4 1028.7 -1.4 -1.3 -2.7 16Z Tue 20 Feb 1026.0 1027.3 1028.6 -1.3 -1.3 -2.6 17Z Tue 20 Feb 1026.4 1027.7 1027.7 -1.3 +0.0 -1.3 18Z Tue 20 Feb 1026.4 1027.6 1026.8 -1.2 +0.8 -0.4 19Z Tue 20 Feb 1026.3 1027.2 1025.9 -0.9 +1.3 +0.4 20Z Tue 20 Feb 1025.9 1026.6 1024.7 -0.7 +1.9 +1.2 21Z Tue 20 Feb 1025.2 1025.9 1023.7 -0.7 +2.2 +1.5 22Z Tue 20 Feb 1025.0 1025.7 1023.3 -0.7 +2.4 +1.7 23Z Tue 20 Feb 1024.2 1024.8 1022.4 -0.6 +2.4 +1.8 00Z Wed 21 Feb 1024.0 1024.5 1022.3 -0.5 +2.2 +1.7 01Z Wed 21 Feb 1024.0 1024.4 1022.6 -0.4 +1.8 +1.4 02Z Wed 21 Feb 1024.4 1024.6 1023.4 -0.2 +1.2 +1.0 03Z Wed 21 Feb 1024.8 1024.7 1023.9 +0.1 +0.8 +0.9 GSE 04Z Wed 21 Feb 1024.6 1024.9 1024.2 -0.3 +0.7 +0.4 05Z Wed 21 Feb 1025.0 1025.7 1024.8 -0.7 +0.9 +0.2 06Z Wed 21 Feb 1025.0 1025.7 1024.8 -0.7 +0.9 +0.2 07Z Wed 21 Feb 1025.2 1025.7 1025.1 -0.5 +0.6 +0.1

Time Day Date ONP SLE RDM ONP-SLE SLE-RDM ONP-RDM (GMT) Pressure Pressure Pressure Gradient Gradient Gradient Remarks ============== ======== ======== ======== ======== ======== ======== ======= 08Z Wed 21 Feb 1025.2 1025.7 1025.3 -0.5 +0.4 -0.1 09Z Wed 21 Feb 1025.3 1025.9 1025.4 -0.6 +0.5 -0.1 10Z Wed 21 Feb 1025.7 1026.4 1025.5 -0.7 +0.9 +0.2 11Z Wed 21 Feb 1025.5 1026.3 1025.2 -0.8 +1.1 +0.3 12Z Wed 21 Feb 1025.8 1026.7 1025.6 -0.9 +1.1 +0.2

NAM Gradient Forecasts
COLUMBIA GORGE GRADIENT FORECASTS
WEATHER NORTHWEST
WEATHER OPERATIONS CENTER
900 PM PST SAT FEB 17 2018


Data from 00Z Sun 18 Feb 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
==============  ======== ======== ======== ======== ======== ======== ========
00Z Sun 18 Feb    999.8   1004.0   1008.5   1013.5    +13.7     +8.7     +4.5
01Z Sun 18 Feb   1001.0   1004.7   1008.1   1013.1    +12.1     +7.1     +3.4
02Z Sun 18 Feb   1002.0   1005.2   1008.0   1011.8     +9.8     +6.0     +2.8
03Z Sun 18 Feb   1001.4   1005.0   1007.7   1011.8    +10.4     +6.3     +2.7
04Z Sun 18 Feb   1000.0   1003.9   1006.2   1010.5    +10.5     +6.2     +2.3
05Z Sun 18 Feb   1000.6   1005.2   1007.0   1011.1    +10.5     +6.4     +1.8
06Z Sun 18 Feb   1000.3   1005.0   1007.2   1011.2    +10.9     +6.9     +2.2
07Z Sun 18 Feb   1000.0   1004.6   1007.1   1011.4    +11.4     +7.1     +2.5

08Z Sun 18 Feb   1000.1   1004.7   1007.1   1011.4    +11.3     +7.0     +2.4
09Z Sun 18 Feb   1000.5   1004.6   1006.9   1010.8    +10.3     +6.4     +2.3
10Z Sun 18 Feb   1000.8   1004.6   1006.2   1010.4     +9.6     +5.4     +1.6
11Z Sun 18 Feb   1000.7   1003.6   1006.0   1010.4     +9.7     +5.3     +2.4
12Z Sun 18 Feb   1001.3   1003.5   1006.3   1010.2     +8.9     +5.0     +2.8
13Z Sun 18 Feb   1002.1   1004.4   1006.0   1010.2     +8.1     +3.9     +1.6
14Z Sun 18 Feb   1002.7   1005.0   1005.3   1009.3     +6.6     +2.6     +0.3
15Z Sun 18 Feb   1003.0   1005.0   1004.6   1008.9     +5.9     +1.6     -0.4
16Z Sun 18 Feb   1003.3   1004.3   1004.2   1008.5     +5.2     +0.9     -0.1
17Z Sun 18 Feb   1003.9   1004.3   1004.3   1008.8     +4.9     +0.4     +0.0
18Z Sun 18 Feb   1005.2   1003.7   1003.9   1008.9     +3.7     -1.3     +0.2
19Z Sun 18 Feb   1007.7   1003.3   1004.4   1008.9     +1.2     -3.3     +1.1
20Z Sun 18 Feb   1008.2   1003.5   1005.0   1009.3     +1.1     -3.2     +1.5
21Z Sun 18 Feb   1009.2   1004.2   1005.4   1009.5     +0.3     -3.8     +1.2
22Z Sun 18 Feb   1010.2   1005.5   1005.9   1010.1     -0.1     -4.3     +0.4
23Z Sun 18 Feb   1010.3   1007.2   1006.2   1010.0     -0.3     -4.1     -1.0
00Z Mon 19 Feb   1010.7   1009.4   1007.0   1010.0     -0.7     -3.7     -2.4
01Z Mon 19 Feb   1011.7   1010.6   1008.3   1010.6     -1.1     -3.4     -2.3
02Z Mon 19 Feb   1013.5   1012.3   1010.2   1011.3     -2.2     -3.3     -2.1
03Z Mon 19 Feb   1014.7   1014.1   1011.8   1011.8     -2.9     -2.9     -2.3
04Z Mon 19 Feb   1015.7   1015.3   1013.1   1012.3     -3.4     -2.6     -2.2
05Z Mon 19 Feb   1016.9   1016.6   1014.6   1013.1     -3.8     -2.3     -2.0
06Z Mon 19 Feb   1017.6   1017.4   1015.6   1014.2     -3.4     -2.0     -1.8
07Z Mon 19 Feb   1018.3   1018.1   1016.7   1015.3     -3.0     -1.6     -1.4

Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX (GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient ============== ======== ======== ======== ======== ======== ======== ======== 08Z Mon 19 Feb 1019.1 1018.8 1017.7 1016.3 -2.8 -1.4 -1.1 09Z Mon 19 Feb 1020.2 1019.8 1018.6 1017.3 -2.9 -1.6 -1.2 10Z Mon 19 Feb 1021.2 1020.7 1019.7 1018.5 -2.7 -1.5 -1.0 11Z Mon 19 Feb 1021.5 1021.2 1020.5 1019.3 -2.2 -1.0 -0.7 12Z Mon 19 Feb 1022.2 1022.0 1021.5 1020.2 -2.0 -0.7 -0.5 13Z Mon 19 Feb 1023.0 1022.8 1022.3 1021.1 -1.9 -0.7 -0.5 14Z Mon 19 Feb 1024.0 1023.7 1023.2 1021.9 -2.1 -0.8 -0.5 15Z Mon 19 Feb 1024.5 1024.4 1023.9 1022.6 -1.9 -0.6 -0.5 16Z Mon 19 Feb 1024.9 1024.9 1024.2 1023.1 -1.8 -0.7 -0.7 17Z Mon 19 Feb 1026.0 1025.9 1025.2 1024.2 -1.8 -0.8 -0.7 18Z Mon 19 Feb 1025.9 1026.0 1025.4 1024.8 -1.1 -0.5 -0.6 19Z Mon 19 Feb 1025.6 1025.8 1025.5 1025.1 -0.5 -0.1 -0.3 20Z Mon 19 Feb 1025.0 1025.4 1025.5 1025.3 +0.3 +0.5 +0.1 21Z Mon 19 Feb 1024.9 1025.4 1025.6 1025.2 +0.3 +0.7 +0.2 22Z Mon 19 Feb 1025.0 1025.5 1025.8 1025.5 +0.5 +0.8 +0.3 23Z Mon 19 Feb 1024.3 1024.9 1025.3 1025.4 +1.1 +1.0 +0.4 00Z Tue 20 Feb 1024.3 1024.7 1025.3 1025.6 +1.3 +1.0 +0.6 01Z Tue 20 Feb 1024.6 1024.9 1025.4 1025.8 +1.2 +0.8 +0.5 02Z Tue 20 Feb 1025.5 1025.5 1025.8 1026.2 +0.7 +0.3 +0.3 03Z Tue 20 Feb 1026.0 1026.0 1026.2 1026.7 +0.7 +0.2 +0.2 04Z Tue 20 Feb 1026.0 1026.2 1026.2 1026.7 +0.7 +0.2 +0.0 05Z Tue 20 Feb 1026.6 1026.9 1026.8 1027.2 +0.6 +0.2 -0.1 06Z Tue 20 Feb 1026.8 1027.2 1027.2 1027.6 +0.8 +0.4 +0.0 07Z Tue 20 Feb 1026.9 1027.5 1027.6 1027.7 +0.8 +0.7 +0.1 08Z Tue 20 Feb 1026.8 1027.6 1027.6 1027.5 +0.7 +0.8 +0.0 09Z Tue 20 Feb 1027.0 1027.8 1027.5 1027.4 +0.4 +0.5 -0.3 10Z Tue 20 Feb 1027.2 1027.8 1027.6 1027.4 +0.2 +0.4 -0.2 11Z Tue 20 Feb 1026.7 1027.4 1027.1 1026.7 +0.0 +0.4 -0.3 12Z Tue 20 Feb 1026.8 1027.4 1027.0 1026.3 -0.5 +0.2 -0.4 13Z Tue 20 Feb 1026.8 1027.4 1026.8 1025.9 -0.9 +0.0 -0.6 14Z Tue 20 Feb 1027.3 1027.8 1027.1 1025.9 -1.4 -0.2 -0.7 15Z Tue 20 Feb 1027.5 1028.0 1027.2 1026.0 -1.5 -0.3 -0.8 16Z Tue 20 Feb 1027.6 1028.0 1027.2 1026.0 -1.6 -0.4 -0.8 17Z Tue 20 Feb 1028.0 1028.1 1027.6 1026.4 -1.6 -0.4 -0.5 18Z Tue 20 Feb 1027.8 1027.6 1027.5 1026.4 -1.4 -0.3 -0.1 19Z Tue 20 Feb 1027.5 1027.0 1027.3 1026.3 -1.2 -0.2 +0.3 20Z Tue 20 Feb 1026.6 1026.2 1026.8 1025.9 -0.7 +0.2 +0.6 21Z Tue 20 Feb 1026.1 1025.6 1026.2 1025.2 -0.9 +0.1 +0.6 22Z Tue 20 Feb 1026.2 1025.5 1026.1 1025.0 -1.2 -0.1 +0.6 23Z Tue 20 Feb 1025.4 1024.8 1025.2 1024.2 -1.2 -0.2 +0.4 00Z Wed 21 Feb 1025.3 1024.8 1024.8 1024.0 -1.3 -0.5 +0.0 01Z Wed 21 Feb 1025.5 1024.9 1024.6 1024.0 -1.5 -0.9 -0.3 02Z Wed 21 Feb 1026.3 1025.4 1024.9 1024.4 -1.9 -1.4 -0.5 03Z Wed 21 Feb 1027.0 1025.9 1025.3 1024.8 -2.2 -1.7 -0.6 04Z Wed 21 Feb 1027.4 1026.5 1025.3 1024.6 -2.8 -2.1 -1.2 05Z Wed 21 Feb 1028.3 1027.3 1025.9 1025.0 -3.3 -2.4 -1.4 06Z Wed 21 Feb 1028.6 1027.5 1025.9 1025.0 -3.6 -2.7 -1.6 07Z Wed 21 Feb 1029.1 1028.0 1026.2 1025.2 -3.9 -2.9 -1.8

Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX (GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient ============== ======== ======== ======== ======== ======== ======== ======== 08Z Wed 21 Feb 1029.1 1028.2 1026.3 1025.2 -3.9 -2.8 -1.9 09Z Wed 21 Feb 1029.4 1028.7 1026.6 1025.3 -4.1 -2.8 -2.1 10Z Wed 21 Feb 1029.7 1029.2 1027.1 1025.7 -4.0 -2.6 -2.1 11Z Wed 21 Feb 1029.3 1029.1 1026.9 1025.5 -3.8 -2.4 -2.2 12Z Wed 21 Feb 1029.6 1029.6 1027.3 1025.8 -3.8 -2.3 -2.3 $$