Observed Sea Level Pressure Differences
Time is given in UTC
Oregon and Washington
22 August 2026
HR OTH-SEA AST-SEA HQM-SEA UIL-BLI OLM-BLI SEA-YKM
00|180 145 3.5|162 145 1.7|167 145 2.2|156 128 2.8|141 128 1.3|145 107 3.8
01|182 149 3.3|163 149 1.4|168 149 1.9|158 132 2.6|143 132 1.1|149 105 4.4
02|184 150 3.4|161 150 1.1|167 150 1.7|159 133 2.6|147 133 1.4|150 103 4.7
03|188 155 3.3|165 155 1.0|171 155 1.6|163 135 2.8|154 135 1.9|155 103 5.2
04|192 162 3.0|170 162 .8|174 162 1.2|165 140 2.5|161 140 2.1|162 106 5.6
05|191 164 2.7|170 164 .6|173 164 .9|166 140 2.6|160 140 2.0|164 108 5.6
06|190 166 2.4|170 166 .4|173 166 .7|165 144 2.1|160 144 1.6|166 114 5.2
07|189 164 2.5|170 164 .6|169 164 .5|165 147 1.8|161 147 1.4|164 112 5.2
08|187 163 2.4|170 163 .7|174 163 1.1|162 149 1.3|160 149 1.1|163 107 5.6
09|187 166 2.1|168 166 .2|170 166 .4|158 149 .9|159 149 1.0|166 101 6.5
10|189 167 2.2|169 167 .2|172 167 .5|160 154 .6|163 154 .9|167 103 6.4
11|191 168 2.3|168 168 .0|172 168 .4|162 155 .7|166 155 1.1|168 105 6.3
12|190 169 2.1|170 169 .1|173 169 .4|164 154 1.0|166 154 1.2|169 103 6.6
13|195 176 1.9|173 176 -.3|177 176 .1|168 159 .9|172 159 1.3|176 108 6.8
14|199 178 2.1|176 178 -.2|179 178 .1|168 164 .4|176 164 1.2|178 114 6.4
15|199 182 1.7|178 182 -.4|181 182 -.1|169 172 -.3|176 172 .4|182 115 6.7
16|200 185 1.5|181 185 -.4|184 185 -.1|173 172 .1|180 172 .8|185 118 6.7
17| 188 |182 188 -.6|187 188 -.1|176 174 .2|184 174 1.0|188 118 7.0
18|207 190 1.7|185 190 -.5|188 190 -.2|178 170 .8|180 170 1.0|190 110 8.0
19|205 186 1.9|184 186 -.2|186 186 .0|179 172 .7|175 172 .3|186 104 8.2
20|205 181 2.4|181 181 .0|186 181 .5|182 170 1.2|172 170 .2|181 099 8.2
21| | | | | |
22| | | | | |
HR OTH-SEA AST-SEA HQM-SEA UIL-BLI OLM-BLI SEA-YKM
Columbia Gorge
22 August 2026
HR AST-PDX PDX-TTD TTD-DLS DLS-HRI
00|162 146 1.6|146 145 .1|145 107 3.8|107 093 1.4
01|163 144 1.9|144 145 -.1|145 106 3.9|106 091 1.5
02|161 145 1.6|145 145 .0|145 109 3.6|109 098 1.1
03|165 148 1.7|148 148 .0|148 115 3.3|115 102 1.3
04|170 149 2.1|149 148 .1|148 121 2.7|121 109 1.2
05|170 153 1.7|153 149 .4|149 119 3.0|119 104 1.5
06|170 153 1.7|153 152 .1|152 119 3.3|119 108 1.1
07|170 158 1.2|158 155 .3|155 113 4.2|113 104 .9
08|170 160 1.0|160 160 .0|160 116 4.4|116 098 1.8
09|168 164 .4|164 164 .0|164 111 5.3|111 097 1.4
10|169 168 .1|168 167 .1|167 111 5.6|111 103 .8
11|168 168 .0|168 169 -.1|169 114 5.5|114 107 .7
12|170 171 -.1|171 173 -.2|173 121 5.2|121 103 1.8
13|173 178 -.5|178 180 -.2|180 130 5.0|130 115 1.5
14|176 183 -.7|183 185 -.2|185 133 5.2|133 120 1.3
15|178 185 -.7|185 186 -.1|186 137 4.9|137 126 1.1
16|181 189 -.8|189 189 .0|189 139 5.0|139 125 1.4
17|182 194 -1.2|194 193 .1|193 137 5.6|137 125 1.2
18|185 191 -.6|191 191 .0|191 136 5.5|136 125 1.1
19|184 187 -.3|187 185 .2|185 133 5.2|133 109 2.4
20|181 187 -.6|187 186 .1|186 131 5.5|131 106 2.5
21| | | |
22| | | |
HR AST-PDX PDX-TTD TTD-DLS DLS-HRI
SW British Columbia
22 August 2026
HR BLI-YZT BLI-YQQ BLI-YHE BLI-YKA OMK-YKA
00|128 146 -1.8|128 126 .2|128 109 1.9|128 103 2.5|105 103 .2
01|132 146 -1.4|132 122 1.0|132 107 2.5|132 099 3.3|106 099 .7
02|133 145 -1.2|133 118 1.5|133 108 2.5|133 100 3.3|107 100 .7
03|135 144 -.9|135 118 1.7|135 112 2.3|135 101 3.4|107 101 .6
04|140 146 -.6|140 118 2.2|140 122 1.8|140 106 3.4|111 106 .5
05|140 146 -.6|140 116 2.4|140 128 1.2|140 105 3.5|105 105 .0
06|144 150 -.6|144 117 2.7|144 130 1.4|144 105 3.9|102 105 -.3
07|147 151 -.4|147 125 2.2|147 133 1.4|147 107 4.0|109 107 .2
08|149 155 -.6|149 132 1.7|149 135 1.4|149 108 4.1|107 108 -.1
09|149 155 -.6|149 136 1.3|149 139 1.0|149 108 4.1|102 108 -.6
10|154 155 -.1|154 138 1.6|154 140 1.4|154 108 4.6|107 108 -.1
11|155 155 .0|155 143 1.2|155 142 1.3|155 110 4.5|103 110 -.7
12|154 155 -.1|154 144 1.0|154 142 1.2|154 112 4.2|105 112 -.7
13|159 157 .2|159 145 1.4|159 143 1.6|159 118 4.1|108 118 -1.0
14|164 163 .1|164 149 1.5|164 148 1.6|164 124 4.0|106 124 -1.8
15|172 166 .6|172 151 2.1|172 149 2.3|172 126 4.6|118 126 -.8
16|172 169 .3|172 155 1.7|172 150 2.2|172 125 4.7|109 125 -1.6
17|174 172 .2|174 153 2.1|174 153 2.1|174 120 5.4|130 120 1.0
18|170 174 -.4|170 155 1.5|170 159 1.1|170 125 4.5|119 125 -.6
19|172 174 -.2|172 155 1.7|172 151 2.1|172 114 5.8|114 114 .0
20|170 175 -.5|170 153 1.7|170 143 2.7|170 117 5.3|104 117 -1.3
21| 175 | 153 | 145 | 105 | 105
22| 178 | 154 | 139 | 098 | 098
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