Observed Sea Level Pressure Differences
Time is given in UTC
Oregon and Washington
13 September 2025
HR OTH-SEA AST-SEA HQM-SEA UIL-BLI OLM-BLI SEA-YKM
00|161 167 -.6|163 167 -.4|168 167 .1|166 159 .7|158 159 -.1|167 115 5.2
01|160 166 -.6|160 166 -.6|165 166 -.1|161 157 .4|155 157 -.2|166 115 5.1
02|160 164 -.4|155 164 -.9|163 164 -.1|158 154 .4|154 154 .0|164 117 4.7
03|164 164 .0|157 164 -.7|162 164 -.2|157 154 .3|155 154 .1|164 120 4.4
04|163 161 .2|154 161 -.7|160 161 -.1|153 152 .1|153 152 .1|161 121 4.0
05|162 159 .3|152 159 -.7|158 159 -.1|152 150 .2|151 150 .1|159 122 3.7
06|160 154 .6|148 154 -.6|154 154 .0|148 147 .1|147 147 .0|154 118 3.6
07|158 150 .8|141 150 -.9|149 150 -.1|141 143 -.2|143 143 .0|150 115 3.5
08|154 146 .8|137 146 -.9|145 146 -.1|137 141 -.4|139 141 -.2|146 115 3.1
09|154 146 .8|134 146 -1.2|142 146 -.4|134 139 -.5|140 139 .1|146 116 3.0
10|152 144 .8|134 144 -1.0|139 144 -.5|131 138 -.7|139 138 .1|144 116 2.8
11|153 141 1.2|131 141 -1.0|135 141 -.6|127 134 -.7|135 134 .1|141 115 2.6
12|152 138 1.4|128 138 -1.0|135 138 -.3|127 133 -.6|132 133 -.1|138 116 2.2
13|156 138 1.8|133 138 -.5|137 138 -.1|128 131 -.3|135 131 .4|138 119 1.9
14|160 138 2.2|135 138 -.3|139 138 .1|126 132 -.6|135 132 .3|138 120 1.8
15|161 139 2.2|136 139 -.3|138 139 -.1|127 132 -.5|135 132 .3|139 118 2.1
16|161 138 2.3|135 138 -.3|138 138 .0|124 131 -.7|134 131 .3|138 116 2.2
17|156 137 1.9|132 137 -.5|136 137 -.1|120 131 -1.1|135 131 .4|137 110 2.7
18|155 137 1.8|131 137 -.6|135 137 -.2|118 128 -1.0|132 128 .4|137 102 3.5
19|145 131 1.4|125 131 -.6|133 131 .2|116 124 -.8|126 124 .2|131 096 3.5
20|143 125 1.8|119 125 -.6|128 125 .3|114 117 -.3|116 117 -.1|125 088 3.7
21|143 125 1.8|119 125 -.6|128 125 .3|114 117 -.3|116 117 -.1|125 088 3.7
22|140 118 2.2|121 118 .3| 118 |115 |108 |118 079 3.9
HR OTH-SEA AST-SEA HQM-SEA UIL-BLI OLM-BLI SEA-YKM
Columbia Gorge
13 September 2025
HR AST-PDX PDX-TTD TTD-DLS DLS-HRI
00|163 150 1.3|150 149 .1|149 113 3.6|113 113 .0
01|160 150 1.0|150 148 .2|148 114 3.4|114 112 .2
02|155 150 .5|150 148 .2|148 115 3.3|115 111 .4
03|157 150 .7|150 148 .2|148 122 2.6|122 114 .8
04|154 149 .5|149 148 .1|148 123 2.5|123 112 1.1
05|152 148 .4|148 147 .1|147 124 2.3|124 113 1.1
06|148 147 .1|147 146 .1|146 124 2.2|124 115 .9
07|141 143 -.2|143 143 .0|143 121 2.2|121 115 .6
08|137 140 -.3|140 140 .0|140 120 2.0|120 114 .6
09|134 140 -.6|140 141 -.1|141 120 2.1|120 116 .4
10|134 140 -.6|140 139 .1|139 119 2.0|119 115 .4
11|131 137 -.6|137 137 .0|137 119 1.8|119 117 .2
12|128 136 -.8|136 135 .1|135 121 1.4|121 115 .6
13|133 138 -.5|138 137 .1|137 124 1.3|124 119 .5
14|135 138 -.3|138 139 -.1|139 123 1.6|123 119 .4
15|136 139 -.3|139 140 -.1|140 123 1.7|123 121 .2
16|135 139 -.4|139 139 .0|139 119 2.0|119 117 .2
17|132 137 -.5|137 136 .1|136 115 2.1|115 113 .2
18|131 133 -.2|133 130 .3|130 107 2.3|107 106 .1
19|125 124 .1|124 123 .1|123 098 2.5|098 101 -.3
20|119 124 -.5|124 114 1.0|114 090 2.4|090 093 -.3
21|119 117 .2|117 114 .3|114 090 2.4|090 093 -.3
22|121 107 1.4|107 107 .0|107 |
HR AST-PDX PDX-TTD TTD-DLS DLS-HRI
SW British Columbia
13 September 2025
HR BLI-YZT BLI-YQQ BLI-YHE BLI-YKA OMK-YKA
00|159 150 .9|159 159 .0|159 141 1.8|159 096 6.3|105 096 .9
01|157 147 1.0|157 154 .3|157 140 1.7|157 095 6.2|105 095 1.0
02|154 143 1.1|154 150 .4|154 140 1.4|154 094 6.0|109 094 1.5
03|154 141 1.3|154 146 .8|154 145 .9|154 096 5.8|113 096 1.7
04|152 139 1.3|152 143 .9|152 148 .4|152 101 5.1|115 101 1.4
05|150 132 1.8|150 145 .5|150 146 .4|150 103 4.7|114 103 1.1
06|147 127 2.0|147 140 .7|147 147 .0|147 104 4.3|114 104 1.0
07|143 120 2.3|143 138 .5|143 145 -.2|143 105 3.8|112 105 .7
08|141 117 2.4|141 134 .7|141 141 .0|141 104 3.7|114 104 1.0
09|139 109 3.0|139 131 .8|139 137 .2|139 103 3.6|115 103 1.2
10|138 105 3.3|138 127 1.1|138 136 .2|138 106 3.2|116 106 1.0
11|134 099 3.5|134 124 1.0|134 134 .0|134 105 2.9|117 105 1.2
12|133 090 4.3|133 118 1.5|133 134 -.1|133 107 2.6|118 107 1.1
13|131 085 4.6|131 115 1.6|131 134 -.3|131 105 2.6|121 105 1.6
14|132 081 5.1|132 113 1.9|132 132 .0|132 110 2.2|122 110 1.2
15|132 079 5.3|132 112 2.0|132 130 .2|132 110 2.2|120 110 1.0
16|131 076 5.5|131 111 2.0|131 125 .6|131 107 2.4|115 107 .8
17|131 074 5.7|131 111 2.0|131 121 1.0|131 098 3.3|112 098 1.4
18|128 069 5.9|128 108 2.0|128 114 1.4|128 086 4.2|105 086 1.9
19|124 065 5.9|124 104 2.0|124 109 1.5|124 076 4.8|097 076 2.1
20|117 062 5.5|117 102 1.5|117 104 1.3|117 062 5.5|088 062 2.6
21|117 065 5.2|117 101 1.6|117 097 2.0|117 054 6.3|088 054 3.4
22| 068 | 092 | 092 | 046 |079 046 3.3
HR BLI-YZT BLI-YQQ BLI-YHE BLI-YKA OMK-YKA
Station Identifiers:
AST Astoria OR
BLI Bellingham WA
CAR Cape Arago OR
DLS The Dalles OR
EAT Wenatchee WA
HQM Hoquiam WA
HRI Hermiston OR
HMS Hanford WA
OLM Olympia WA
OMK Omak WA
PDX Portland OR
SEA SeaTac WA
SPB Scapoose OR
SLE Salem OR
TTD Troutdale OR
UIL Quillayute WA
YKM Yakima WA
YHE Hope BC
YKA Kamploops BC
YQQ Comox BC
YZT Port Hardy BC