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Humboldt Bay (North Spit) water levels in 1991
Annual rank39 / 46
vs. average-9.1 cm
Highest monthly peak1.44 mDecember 1991
Monthly mean vs. previous year
| Month | 1991 (cm) | 1990 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -3.6 | 0.4 | -4.0 | 1.37 |
| Feb | 1.6 | -3.3 | 4.9 | 1.35 |
| Mar | 2.2 | -8.5 | 10.7 | 1.35 |
| Apr | -14.9 | -7.9 | -7.0 | 1.15 |
| May | -16.1 | -11.8 | -4.3 | 1.23 |
| Jun | -12.4 | -7.3 | -5.1 | 1.23 |
| Jul | -3.6 | -1.8 | -1.8 | 1.35 |
| Aug | -0.2 | -1.5 | 1.3 | 1.35 |
| Sep | 1.9 | 1.6 | 0.3 | 1.17 |
| Oct | 1.9 | -4.5 | 6.4 | 1.36 |
| Nov | -5.4 | -3.9 | -1.5 | 1.33 |
| Dec | 2.2 | -4.8 | 7.0 | 1.44 |
Nearby years (cm vs. average)
-6.7
-7.1
-13.1
-11.2
-9.6
-9.1
+0.7
-0.6
-5.3
-0.6
-3.2
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1991 annual mean water level ranked 39 of 46 years (-9.1 cm vs. the period average).