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Sand Island, Midway Islands water levels in 1991
Annual rank40 / 73
vs. average-1.4 cm
Highest monthly peak0.43 mJanuary 1991
Monthly mean vs. previous year
| Month | 1991 (cm) | 1990 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 2.5 | 0.1 | 2.4 | 0.43 |
| Feb | 1.9 | -3.5 | 5.4 | 0.39 |
| Mar | -8.7 | 0.4 | -9.1 | 0.29 |
| Apr | -5.4 | -1.4 | -4.0 | 0.25 |
| May | -13.0 | -2.9 | -10.1 | – |
| Jun | 1.6 | -5.4 | 7.0 | 0.32 |
| Jul | 4.7 | -7.8 | 12.5 | 0.28 |
| Aug | 8.9 | 3.8 | 5.1 | 0.32 |
| Sep | 5.9 | 5.3 | 0.6 | 0.33 |
| Oct | 5.3 | 4.1 | 1.2 | 0.35 |
| Nov | -0.2 | 6.2 | -6.4 | 0.28 |
| Dec | -1.7 | -3.9 | 2.2 | 0.36 |
Nearby years (cm vs. average)
-1.0
-1.9
-5.0
-3.0
-2.0
-1.4
-1.0
-4.7
-1.5
+1.1
-1.8
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1991 annual mean water level ranked 40 of 73 years (-1.4 cm vs. the period average).