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Nantucket water levels in 1999
Annual rank30 / 60
vs. average-1.3 cm
Highest monthly peak0.97 mDecember 1999
Monthly mean vs. previous year
| Month | 1999 (cm) | 1998 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -7.6 | 7.8 | -15.4 | 0.77 |
| Feb | 4.9 | 13.7 | -8.8 | 0.90 |
| Mar | -1.3 | 0.7 | -2.0 | 0.86 |
| Apr | 3.5 | 7.2 | -3.7 | 0.92 |
| May | 0.3 | 8.8 | -8.5 | 0.70 |
| Jun | -1.5 | 7.2 | -8.7 | 0.80 |
| Jul | 4.5 | 5.9 | -1.4 | 0.85 |
| Aug | 5.9 | 1.9 | 4.0 | 0.83 |
| Sep | 3.8 | 7.7 | -3.9 | 0.76 |
| Oct | 2.0 | 3.8 | -1.8 | 0.90 |
| Nov | -1.0 | 1.1 | -2.1 | 0.78 |
| Dec | -0.7 | -1.8 | 1.1 | 0.97 |
Nearby years (cm vs. average)
-6.9
-3.0
+1.4
+1.9
+3.0
-1.3
-2.3
-0.6
-1.4
-0.8
-0.3
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1999 annual mean water level ranked 30 of 60 years (-1.3 cm vs. the period average).