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Philadelphia, US Coast Guard Station, Pa. water levels in 2009
Annual rank13 / 36
vs. average2.6 cm
Highest monthly peak1.70 mJune 2009
Monthly mean vs. previous year
| Month | 2009 (cm) | 2008 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -13.0 | -7.1 | -5.9 | 1.20 |
| Feb | -13.0 | -0.9 | -12.1 | 1.22 |
| Mar | -2.2 | 9.3 | -11.5 | 1.21 |
| Apr | 4.7 | 10.2 | -5.5 | 1.24 |
| May | 6.7 | 16.4 | -9.7 | 1.37 |
| Jun | 28.2 | 7.3 | 20.9 | 1.70 |
| Jul | 18.1 | 6.4 | 11.7 | 1.48 |
| Aug | 16.7 | 7.5 | 9.2 | 1.36 |
| Sep | 18.4 | 12.4 | 6.0 | 1.41 |
| Oct | 19.8 | 5.7 | 14.1 | 1.42 |
| Nov | 16.9 | -0.6 | 17.5 | 1.57 |
| Dec | 4.3 | -6.8 | 11.1 | 1.42 |
Nearby years (cm vs. average)
-2.1
+2.6
+0.6
-5.6
-1.2
+2.6
+3.2
+9.9
+2.0
-1.1
+1.1
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2009 annual mean water level ranked 13 of 36 years (2.6 cm vs. the period average).