NAM Gradient Forecasts

GRADIENT STACKING FORECASTS WEATHER NORTHWEST WEATHER OPERATIONS CENTER 600 AM PDT SAT APR 26 2025 Data from 06Z Sat 26 Apr NAM Model Time Day Date ONP SLE RDM ONP-SLE SLE-RDM ONP-RDM (GMT) Pressure Pressure Pressure Gradient Gradient Gradient Remarks ============== ======== ======== ======== ======== ======== ======== ======= 06Z Sat 26 Apr 1013.5 1012.8 1006.5 +0.7 +6.3 +7.0 GSE 07Z Sat 26 Apr 1013.7 1013.0 1007.3 +0.7 +5.7 +6.4 GSE 08Z Sat 26 Apr 1013.6 1012.9 1008.2 +0.7 +4.7 +5.4 GSE 09Z Sat 26 Apr 1013.5 1012.8 1008.7 +0.7 +4.1 +4.8 GSE 10Z Sat 26 Apr 1013.2 1012.7 1009.1 +0.5 +3.6 +4.1 GSE 11Z Sat 26 Apr 1013.2 1012.7 1009.7 +0.5 +3.0 +3.5 GSE 12Z Sat 26 Apr 1013.6 1012.9 1010.4 +0.7 +2.5 +3.2 GSE 13Z Sat 26 Apr 1013.7 1013.0 1011.0 +0.7 +2.0 +2.7 GSE 14Z Sat 26 Apr 1014.0 1013.1 1011.5 +0.9 +1.6 +2.5 GSE 15Z Sat 26 Apr 1014.1 1013.0 1010.8 +1.1 +2.2 +3.3 GSE 16Z Sat 26 Apr 1013.9 1012.8 1009.4 +1.1 +3.4 +4.5 GSE 17Z Sat 26 Apr 1014.0 1013.1 1008.8 +0.9 +4.3 +5.2 GSE 18Z Sat 26 Apr 1014.2 1013.2 1008.2 +1.0 +5.0 +6.0 GSE 19Z Sat 26 Apr 1014.5 1013.3 1007.7 +1.2 +5.6 +6.8 GSE 20Z Sat 26 Apr 1014.6 1012.9 1006.9 +1.7 +6.0 +7.7 GSE 21Z Sat 26 Apr 1014.7 1012.8 1006.5 +1.9 +6.3 +8.2 GSE 22Z Sat 26 Apr 1014.9 1012.8 1006.1 +2.1 +6.7 +8.8 GSE 23Z Sat 26 Apr 1014.7 1012.6 1005.8 +2.1 +6.8 +8.9 GSE 00Z Sun 27 Apr 1014.9 1012.8 1006.0 +2.1 +6.8 +8.9 GSE 01Z Sun 27 Apr 1015.2 1013.0 1006.6 +2.2 +6.4 +8.6 GSE 02Z Sun 27 Apr 1015.7 1013.6 1007.6 +2.1 +6.0 +8.1 GSE 03Z Sun 27 Apr 1016.1 1014.2 1008.6 +1.9 +5.6 +7.5 GSE 04Z Sun 27 Apr 1016.3 1015.0 1009.4 +1.3 +5.6 +6.9 GSE 05Z Sun 27 Apr 1016.7 1015.7 1010.1 +1.0 +5.6 +6.6 GSE 06Z Sun 27 Apr 1016.6 1015.9 1010.3 +0.7 +5.6 +6.3 GSE 07Z Sun 27 Apr 1016.8 1016.2 1010.7 +0.6 +5.5 +6.1 GSE 08Z Sun 27 Apr 1016.9 1016.4 1011.0 +0.5 +5.4 +5.9 GSE 09Z Sun 27 Apr 1017.1 1016.6 1011.1 +0.5 +5.5 +6.0 GSE 10Z Sun 27 Apr 1017.4 1017.0 1011.5 +0.4 +5.5 +5.9 GSE 11Z Sun 27 Apr 1017.5 1017.0 1012.2 +0.5 +4.8 +5.3 GSE 12Z Sun 27 Apr 1017.7 1017.2 1013.0 +0.5 +4.2 +4.7 GSE 13Z Sun 27 Apr 1018.0 1017.6 1014.0 +0.4 +3.6 +4.0 GSE 14Z Sun 27 Apr 1018.7 1018.4 1015.0 +0.3 +3.4 +3.7 GSE 15Z Sun 27 Apr 1018.8 1018.5 1014.0 +0.3 +4.5 +4.8 GSE 16Z Sun 27 Apr 1018.9 1018.5 1013.2 +0.4 +5.3 +5.7 GSE 17Z Sun 27 Apr 1019.5 1019.1 1013.0 +0.4 +6.1 +6.5 GSE 18Z Sun 27 Apr 1019.9 1019.5 1012.8 +0.4 +6.7 +7.1 GSE 19Z Sun 27 Apr 1020.3 1019.9 1012.7 +0.4 +7.2 +7.6 GSE 20Z Sun 27 Apr 1020.6 1019.9 1012.5 +0.7 +7.4 +8.1 GSE 21Z Sun 27 Apr 1020.9 1020.1 1012.5 +0.8 +7.6 +8.4 GSE 22Z Sun 27 Apr 1021.3 1020.2 1012.4 +1.1 +7.8 +8.9 GSE 23Z Sun 27 Apr 1021.2 1019.9 1012.4 +1.3 +7.5 +8.8 GSE 00Z Mon 28 Apr 1021.6 1020.2 1013.2 +1.4 +7.0 +8.4 GSE 01Z Mon 28 Apr 1022.1 1020.5 1014.5 +1.6 +6.0 +7.6 GSE 02Z Mon 28 Apr 1022.7 1021.1 1016.2 +1.6 +4.9 +6.5 GSE 03Z Mon 28 Apr 1023.3 1021.9 1017.9 +1.4 +4.0 +5.4 GSE 04Z Mon 28 Apr 1024.0 1023.0 1019.5 +1.0 +3.5 +4.5 GSE 05Z Mon 28 Apr 1024.8 1024.2 1020.8 +0.6 +3.4 +4.0 GSE 06Z Mon 28 Apr 1025.3 1024.7 1021.5 +0.6 +3.2 +3.8 GSE

Time Day Date ONP SLE RDM ONP-SLE SLE-RDM ONP-RDM (GMT) Pressure Pressure Pressure Gradient Gradient Gradient Remarks ============== ======== ======== ======== ======== ======== ======== ======= 07Z Mon 28 Apr 1025.9 1025.2 1022.0 +0.7 +3.2 +3.9 GSE 08Z Mon 28 Apr 1026.0 1025.4 1022.1 +0.6 +3.3 +3.9 GSE 09Z Mon 28 Apr 1026.3 1025.8 1022.5 +0.5 +3.3 +3.8 GSE 10Z Mon 28 Apr 1026.5 1026.2 1023.0 +0.3 +3.2 +3.5 GSE 11Z Mon 28 Apr 1026.6 1026.3 1023.2 +0.3 +3.1 +3.4 GSE 12Z Mon 28 Apr 1026.8 1026.5 1023.7 +0.3 +2.8 +3.1 GSE 13Z Mon 28 Apr 1027.0 1026.7 1024.1 +0.3 +2.6 +2.9 GSE 14Z Mon 28 Apr 1027.7 1027.5 1024.9 +0.2 +2.6 +2.8 GSE 15Z Mon 28 Apr 1027.8 1027.7 1025.3 +0.1 +2.4 +2.5 GSE 16Z Mon 28 Apr 1027.9 1027.8 1025.6 +0.1 +2.2 +2.3 GSE 17Z Mon 28 Apr 1028.5 1028.2 1025.7 +0.3 +2.5 +2.8 GSE 18Z Mon 28 Apr 1028.8 1028.4 1024.9 +0.4 +3.5 +3.9 GSE 19Z Mon 28 Apr 1028.8 1028.3 1023.7 +0.5 +4.6 +5.1 GSE 20Z Mon 28 Apr 1028.6 1027.9 1022.3 +0.7 +5.6 +6.3 GSE 21Z Mon 28 Apr 1028.5 1027.7 1021.6 +0.8 +6.1 +6.9 GSE 22Z Mon 28 Apr 1028.2 1027.3 1020.8 +0.9 +6.5 +7.4 GSE 23Z Mon 28 Apr 1027.5 1026.5 1019.9 +1.0 +6.6 +7.6 GSE 00Z Tue 29 Apr 1027.2 1026.2 1019.7 +1.0 +6.5 +7.5 GSE 01Z Tue 29 Apr 1027.0 1025.9 1019.6 +1.1 +6.3 +7.4 GSE 02Z Tue 29 Apr 1027.1 1025.9 1019.9 +1.2 +6.0 +7.2 GSE 03Z Tue 29 Apr 1027.1 1025.9 1020.3 +1.2 +5.6 +6.8 GSE 04Z Tue 29 Apr 1027.2 1026.0 1020.8 +1.2 +5.2 +6.4 GSE 05Z Tue 29 Apr 1027.4 1026.3 1021.4 +1.1 +4.9 +6.0 GSE 06Z Tue 29 Apr 1027.2 1026.2 1021.9 +1.0 +4.3 +5.3 GSE 07Z Tue 29 Apr 1026.9 1026.0 1022.2 +0.9 +3.8 +4.7 GSE 08Z Tue 29 Apr 1026.3 1025.3 1022.0 +1.0 +3.3 +4.3 GSE 09Z Tue 29 Apr 1026.0 1025.0 1021.9 +1.0 +3.1 +4.1 GSE 10Z Tue 29 Apr 1025.8 1025.0 1021.9 +0.8 +3.1 +3.9 GSE 11Z Tue 29 Apr 1025.6 1024.8 1021.8 +0.8 +3.0 +3.8 GSE 12Z Tue 29 Apr 1025.4 1024.8 1021.9 +0.6 +2.9 +3.5 GSE 13Z Tue 29 Apr 1025.4 1024.9 1022.1 +0.5 +2.8 +3.3 GSE 14Z Tue 29 Apr 1025.5 1025.2 1022.6 +0.3 +2.6 +2.9 GSE 15Z Tue 29 Apr 1025.4 1025.0 1022.5 +0.4 +2.5 +2.9 GSE 16Z Tue 29 Apr 1025.2 1024.9 1022.0 +0.3 +2.9 +3.2 GSE 17Z Tue 29 Apr 1025.3 1025.2 1021.3 +0.1 +3.9 +4.0 GSE 18Z Tue 29 Apr 1025.3 1025.1 1020.4 +0.2 +4.7 +4.9 GSE

COLUMBIA GORGE GRADIENT FORECASTS WEATHER NORTHWEST WEATHER OPERATIONS CENTER 600 AM PDT SAT APR 26 2025 Data from 06Z Sat 26 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 ============== ======== ======== ======== ======== ======== ======== ======== 06Z Sat 26 Apr 1006.3 1008.5 1011.2 1013.5 +7.2 +4.9 +2.7 07Z Sat 26 Apr 1006.8 1008.9 1011.7 1013.7 +6.9 +4.9 +2.8 08Z Sat 26 Apr 1006.8 1009.3 1011.9 1013.6 +6.8 +5.1 +2.6 09Z Sat 26 Apr 1006.6 1009.0 1011.8 1013.5 +6.9 +5.2 +2.8 10Z Sat 26 Apr 1006.6 1009.2 1011.9 1013.2 +6.6 +5.3 +2.7 11Z Sat 26 Apr 1006.3 1009.3 1012.0 1013.2 +6.9 +5.7 +2.7 12Z Sat 26 Apr 1006.3 1009.6 1012.4 1013.6 +7.3 +6.1 +2.8 13Z Sat 26 Apr 1006.5 1009.8 1012.6 1013.7 +7.2 +6.1 +2.8 14Z Sat 26 Apr 1006.6 1010.0 1012.8 1014.0 +7.4 +6.2 +2.8 15Z Sat 26 Apr 1006.1 1009.9 1012.6 1014.1 +8.0 +6.5 +2.7 16Z Sat 26 Apr 1005.6 1009.4 1012.3 1013.9 +8.3 +6.7 +2.9 17Z Sat 26 Apr 1005.6 1009.4 1012.6 1014.0 +8.4 +7.0 +3.2 18Z Sat 26 Apr 1005.4 1009.3 1012.6 1014.2 +8.8 +7.2 +3.3 19Z Sat 26 Apr 1005.1 1009.1 1012.6 1014.5 +9.4 +7.5 +3.5 20Z Sat 26 Apr 1004.7 1008.7 1012.2 1014.6 +9.9 +7.5 +3.5 21Z Sat 26 Apr 1004.6 1008.5 1012.2 1014.7 +10.1 +7.6 +3.7 22Z Sat 26 Apr 1004.5 1008.5 1012.3 1014.9 +10.4 +7.8 +3.8 23Z Sat 26 Apr 1003.9 1008.1 1012.0 1014.7 +10.8 +8.1 +3.9 00Z Sun 27 Apr 1004.0 1008.0 1012.2 1014.9 +10.9 +8.2 +4.2 01Z Sun 27 Apr 1004.1 1008.2 1012.5 1015.2 +11.1 +8.4 +4.3 02Z Sun 27 Apr 1004.9 1008.7 1013.2 1015.7 +10.8 +8.3 +4.5 03Z Sun 27 Apr 1005.6 1009.2 1013.8 1016.1 +10.5 +8.2 +4.6 04Z Sun 27 Apr 1006.2 1009.9 1014.6 1016.3 +10.1 +8.4 +4.7 05Z Sun 27 Apr 1006.9 1010.6 1015.3 1016.7 +9.8 +8.4 +4.7 06Z Sun 27 Apr 1006.9 1010.8 1015.5 1016.6 +9.7 +8.6 +4.7 07Z Sun 27 Apr 1007.2 1011.2 1015.7 1016.8 +9.6 +8.5 +4.5 08Z Sun 27 Apr 1007.3 1011.4 1015.7 1016.9 +9.6 +8.4 +4.3 09Z Sun 27 Apr 1007.6 1011.9 1015.9 1017.1 +9.5 +8.3 +4.0 10Z Sun 27 Apr 1008.1 1012.5 1016.2 1017.4 +9.3 +8.1 +3.7 11Z Sun 27 Apr 1008.3 1012.8 1016.2 1017.5 +9.2 +7.9 +3.4 12Z Sun 27 Apr 1008.7 1013.2 1016.4 1017.7 +9.0 +7.7 +3.2 13Z Sun 27 Apr 1009.2 1013.7 1016.7 1018.0 +8.8 +7.5 +3.0 14Z Sun 27 Apr 1010.1 1014.6 1017.4 1018.7 +8.6 +7.3 +2.8 15Z Sun 27 Apr 1009.8 1014.4 1017.5 1018.8 +9.0 +7.7 +3.1 16Z Sun 27 Apr 1009.4 1014.2 1017.5 1018.9 +9.5 +8.1 +3.3 17Z Sun 27 Apr 1009.7 1014.8 1018.1 1019.5 +9.8 +8.4 +3.3 18Z Sun 27 Apr 1009.8 1015.2 1018.4 1019.9 +10.1 +8.6 +3.2 19Z Sun 27 Apr 1009.8 1015.3 1018.8 1020.3 +10.5 +9.0 +3.5 20Z Sun 27 Apr 1009.5 1015.6 1018.9 1020.6 +11.1 +9.4 +3.3 21Z Sun 27 Apr 1009.7 1016.1 1019.2 1020.9 +11.2 +9.5 +3.1 22Z Sun 27 Apr 1009.8 1016.4 1019.4 1021.3 +11.5 +9.6 +3.0 23Z Sun 27 Apr 1009.6 1016.1 1019.2 1021.2 +11.6 +9.6 +3.1 00Z Mon 28 Apr 1010.3 1016.6 1019.5 1021.6 +11.3 +9.2 +2.9 01Z Mon 28 Apr 1011.0 1017.1 1019.7 1022.1 +11.1 +8.7 +2.6 02Z Mon 28 Apr 1012.1 1017.8 1020.3 1022.7 +10.6 +8.2 +2.5 03Z Mon 28 Apr 1013.0 1018.2 1020.8 1023.3 +10.3 +7.8 +2.6 04Z Mon 28 Apr 1014.1 1018.9 1021.9 1024.0 +9.9 +7.8 +3.0 05Z Mon 28 Apr 1015.3 1019.9 1023.2 1024.8 +9.5 +7.9 +3.3 06Z Mon 28 Apr 1016.2 1020.4 1024.0 1025.3 +9.1 +7.8 +3.6

Time Day Date YKM DLS PDX ONP YKM-ONP YKM-PDX DLS-PDX (GMT) Pressure Pressure Pressure Pressure Gradient Gradient Gradient ============== ======== ======== ======== ======== ======== ======== ======== 07Z Mon 28 Apr 1016.9 1021.0 1024.6 1025.9 +9.0 +7.7 +3.6 08Z Mon 28 Apr 1017.4 1021.4 1024.8 1026.0 +8.6 +7.4 +3.4 09Z Mon 28 Apr 1018.1 1022.1 1025.2 1026.3 +8.2 +7.1 +3.1 10Z Mon 28 Apr 1019.0 1023.0 1025.6 1026.5 +7.5 +6.6 +2.6 11Z Mon 28 Apr 1019.4 1023.4 1025.7 1026.6 +7.2 +6.3 +2.3 12Z Mon 28 Apr 1020.0 1023.9 1025.9 1026.8 +6.8 +5.9 +2.0 13Z Mon 28 Apr 1020.7 1024.2 1026.2 1027.0 +6.3 +5.5 +2.0 14Z Mon 28 Apr 1021.5 1025.1 1027.1 1027.7 +6.2 +5.6 +2.0 15Z Mon 28 Apr 1021.5 1025.4 1027.3 1027.8 +6.3 +5.8 +1.9 16Z Mon 28 Apr 1021.5 1025.8 1027.5 1027.9 +6.4 +6.0 +1.7 17Z Mon 28 Apr 1021.8 1026.3 1028.2 1028.5 +6.7 +6.4 +1.9 18Z Mon 28 Apr 1021.9 1026.3 1028.6 1028.8 +6.9 +6.7 +2.3 19Z Mon 28 Apr 1021.6 1026.0 1028.7 1028.8 +7.2 +7.1 +2.7 20Z Mon 28 Apr 1021.0 1025.4 1028.4 1028.6 +7.6 +7.4 +3.0 21Z Mon 28 Apr 1020.7 1025.0 1028.1 1028.5 +7.8 +7.4 +3.1 22Z Mon 28 Apr 1020.2 1024.5 1027.6 1028.2 +8.0 +7.4 +3.1 23Z Mon 28 Apr 1019.3 1023.6 1026.7 1027.5 +8.2 +7.4 +3.1 00Z Tue 29 Apr 1018.9 1023.1 1026.3 1027.2 +8.3 +7.4 +3.2 01Z Tue 29 Apr 1018.7 1022.8 1026.0 1027.0 +8.3 +7.3 +3.2 02Z Tue 29 Apr 1018.9 1023.0 1026.1 1027.1 +8.2 +7.2 +3.1 03Z Tue 29 Apr 1019.3 1023.1 1026.1 1027.1 +7.8 +6.8 +3.0 04Z Tue 29 Apr 1019.6 1023.3 1026.1 1027.2 +7.6 +6.5 +2.8 05Z Tue 29 Apr 1020.1 1023.7 1026.4 1027.4 +7.3 +6.3 +2.7 06Z Tue 29 Apr 1020.3 1023.8 1026.4 1027.2 +6.9 +6.1 +2.6 07Z Tue 29 Apr 1020.4 1023.7 1026.3 1026.9 +6.5 +5.9 +2.6 08Z Tue 29 Apr 1019.9 1023.2 1025.6 1026.3 +6.4 +5.7 +2.4 09Z Tue 29 Apr 1019.7 1022.9 1025.3 1026.0 +6.3 +5.6 +2.4 10Z Tue 29 Apr 1019.7 1022.8 1025.3 1025.8 +6.1 +5.6 +2.5 11Z Tue 29 Apr 1019.4 1022.6 1025.2 1025.6 +6.2 +5.8 +2.6 12Z Tue 29 Apr 1020.0 1022.7 1025.2 1025.4 +5.4 +5.2 +2.5 13Z Tue 29 Apr 1020.8 1022.9 1025.2 1025.4 +4.6 +4.4 +2.3 14Z Tue 29 Apr 1021.4 1023.3 1025.5 1025.5 +4.1 +4.1 +2.2 15Z Tue 29 Apr 1021.1 1022.8 1025.2 1025.4 +4.3 +4.1 +2.4 16Z Tue 29 Apr 1020.4 1022.4 1025.1 1025.2 +4.8 +4.7 +2.7 17Z Tue 29 Apr 1020.3 1022.5 1025.4 1025.3 +5.0 +5.1 +2.9 18Z Tue 29 Apr 1019.8 1022.2 1025.4 1025.3 +5.5 +5.6 +3.2 $$