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Humboldt Bay (North Spit) water levels in 1990
Annual rank40 / 46
vs. average-9.6 cm
Highest monthly peak1.48 mJanuary 1990
Monthly mean vs. previous year
| Month | 1990 (cm) | 1989 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 0.4 | -12.4 | 12.8 | 1.48 |
| Feb | -3.3 | -12.1 | 8.8 | 1.18 |
| Mar | -8.5 | -1.8 | -6.7 | 1.22 |
| Apr | -7.9 | -6.6 | -1.3 | 1.24 |
| May | -11.8 | -11.2 | -0.6 | 1.35 |
| Jun | -7.3 | -7.9 | 0.6 | 1.43 |
| Jul | -1.8 | -10.0 | 8.2 | 1.38 |
| Aug | -1.5 | -4.2 | 2.7 | 1.18 |
| Sep | 1.6 | 1.9 | -0.3 | 1.16 |
| Oct | -4.5 | -0.9 | -3.6 | 1.22 |
| Nov | -3.9 | -1.8 | -2.1 | 1.31 |
| Dec | -4.8 | -4.5 | -0.3 | 1.36 |
Nearby years (cm vs. average)
-13.7
-6.7
-7.1
-13.1
-11.2
-9.6
-9.1
+0.7
-0.6
-5.3
-0.6
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1990 annual mean water level ranked 40 of 46 years (-9.6 cm vs. the period average).