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Philadelphia, US Coast Guard Station, Pa. water levels in 1997
Annual rank25 / 36
vs. average-3.7 cm
Highest monthly peak1.48 mApril 1997
Monthly mean vs. previous year
| Month | 1997 (cm) | 1996 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 2.3 | 8.3 | -6.0 | – |
| Feb | -2.6 | -8.6 | 6.0 | 1.30 |
| Mar | 1.2 | -5.6 | 6.8 | 1.34 |
| Apr | 7.3 | 10.1 | -2.8 | 1.48 |
| May | -0.4 | 9.6 | -10.0 | 1.22 |
| Jun | 12.4 | 7.1 | 5.3 | 1.45 |
| Jul | 3.1 | 8.2 | -5.1 | 1.22 |
| Aug | 6.1 | 8.5 | -2.4 | 1.45 |
| Sep | 4.2 | 20.7 | -16.5 | 1.22 |
| Oct | 3.0 | 17.5 | -14.5 | 1.24 |
| Nov | 0.9 | 8.5 | -7.6 | 1.35 |
| Dec | -7.7 | 25.1 | -32.8 | 1.26 |
Nearby years (cm vs. average)
-8.3
-4.6
-5.7
-9.8
+2.9
-3.7
+0.3
-6.8
-8.1
-8.9
-10.0
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1997 annual mean water level ranked 25 of 36 years (-3.7 cm vs. the period average).