Observed Sea Level Pressure Differences
Time is given in UTC
Oregon and Washington
18 June 2026
HR OTH-SEA AST-SEA HQM-SEA UIL-BLI OLM-BLI SEA-YKM
00| 188 |200 188 1.2|201 188 1.3| 188 |178 188 -1.0|188 110 7.8
01| 186 |199 186 1.3|198 186 1.2| 184 |175 184 -.9|186 112 7.4
02| 182 |197 182 1.5|195 182 1.3| 181 |174 181 -.7|182 111 7.1
03| 182 |196 182 1.4|197 182 1.5| 182 |177 182 -.5|182 117 6.5
04| 185 |198 185 1.3|200 185 1.5| 185 |180 185 -.5|185 131 5.4
05| 186 |197 186 1.1|199 186 1.3| 186 |182 186 -.4|186 137 4.9
06| 186 |193 186 .7|197 186 1.1| 187 |182 187 -.5|186 137 4.9
07| 186 |189 186 .3|194 186 .8| 188 |183 188 -.5|186 135 5.1
08| 186 |185 186 -.1|192 186 .6| 189 |183 189 -.6|186 136 5.0
09| 186 |183 186 -.3|191 186 .5| 191 |183 191 -.8|186 139 4.7
10| 188 |183 188 -.5|190 188 .2| 193 |184 193 -.9|188 142 4.6
11| 187 |179 187 -.8|189 187 .2| 191 |182 191 -.9|187 147 4.0
12| 189 |177 189 -1.2|188 189 -.1| 191 |185 191 -.6|189 150 3.9
13| 190 |177 190 -1.3|188 190 -.2| 193 |184 193 -.9|190 155 3.5
14| 189 |177 189 -1.2|190 189 .1| 193 |183 193 -1.0|189 157 3.2
15| 185 |175 185 -1.0|190 185 .5| 191 |180 191 -1.1|185 159 2.6
16| 183 |171 183 -1.2|186 183 .3| 189 |178 189 -1.1|183 155 2.8
17| 181 |166 181 -1.5|181 181 .0| 185 |173 185 -1.2|181 149 3.2
18| | | | | |
19| | | | | |
HR OTH-SEA AST-SEA HQM-SEA UIL-BLI OLM-BLI SEA-YKM
Columbia Gorge
18 June 2026
HR AST-PDX PDX-TTD TTD-DLS DLS-HRI
00|200 169 3.1|169 164 .5|164 121 4.3|121 111 1.0
01|199 164 3.5|164 161 .3|161 120 4.1|120 109 1.1
02|197 164 3.3|164 161 .3|161 124 3.7|124 105 1.9
03|196 166 3.0|166 162 .4|162 121 4.1|121 106 1.5
04|198 173 2.5|173 169 .4|169 130 3.9|130 115 1.5
05|197 173 2.4|173 169 .4|169 135 3.4|135 119 1.6
06|193 172 2.1|172 168 .4|168 134 3.4|134 122 1.2
07|189 170 1.9|170 168 .2|168 134 3.4|134 124 1.0
08|185 170 1.5|170 167 .3|167 134 3.3|134 130 .4
09|183 168 1.5|168 167 .1|167 135 3.2|135 134 .1
10|183 168 1.5|168 166 .2|166 139 2.7|139 136 .3
11|179 167 1.2|167 165 .2|165 141 2.4|141 141 .0
12|177 166 1.1|166 164 .2|164 148 1.6|148 146 .2
13|177 167 1.0|167 165 .2|165 154 1.1|154 149 .5
14|177 167 1.0|167 166 .1|166 159 .7|159 153 .6
15|175 165 1.0|165 163 .2|163 158 .5|158 154 .4
16|171 161 1.0|161 159 .2|159 155 .4|155 151 .4
17|166 157 .9|157 154 .3|154 147 .7|147 147 .0
18| | | |
19| | | |
HR AST-PDX PDX-TTD TTD-DLS DLS-HRI
SW British Columbia
18 June 2026
HR BLI-YZT BLI-YQQ BLI-YHE BLI-YKA OMK-YKA
00|188 239 -5.1|188 190 -.2|188 168 2.0|188 139 4.9|113 139 -2.6
01|184 237 -5.3|184 184 .0|184 163 2.1|184 137 4.7|109 137 -2.8
02|181 238 -5.7|181 183 -.2|181 162 1.9|181 133 4.8|108 133 -2.5
03|182 236 -5.4|182 184 -.2|182 164 1.8|182 136 4.6|111 136 -2.5
04|185 235 -5.0|185 184 .1|185 168 1.7|185 141 4.4|118 141 -2.3
05|186 237 -5.1|186 191 -.5|186 176 1.0|186 152 3.4|125 152 -2.7
06|187 235 -4.8|187 193 -.6|187 180 .7|187 156 3.1|127 156 -2.9
07|188 234 -4.6|188 193 -.5|188 183 .5|188 161 2.7|131 161 -3.0
08|189 232 -4.3|189 190 -.1|189 188 .1|189 166 2.3|135 166 -3.1
09|191 231 -4.0|191 193 -.2|191 188 .3|191 173 1.8|141 173 -3.2
10|193 232 -3.9|193 195 -.2|193 192 .1|193 180 1.3|147 180 -3.3
11|191 231 -4.0|191 195 -.4|191 195 -.4|191 183 .8|152 183 -3.1
12|191 229 -3.8|191 197 -.6|191 196 -.5|191 189 .2|158 189 -3.1
13|193 230 -3.7|193 200 -.7|193 197 -.4|193 194 -.1|161 194 -3.3
14|193 230 -3.7|193 202 -.9|193 198 -.5|193 198 -.5|164 198 -3.4
15|191 230 -3.9|191 203 -1.2|191 195 -.4|191 195 -.4|163 195 -3.2
16|189 229 -4.0|189 203 -1.4|189 187 .2|189 188 .1|158 188 -3.0
17|185 228 -4.3|185 203 -1.8|185 179 .6|185 179 .6|155 179 -2.4
18| 226 | 199 | 169 | 176 | 176
19| | | | |
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