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Hog Island — April 15, 2026

Hog Island — April 15, 2026

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Reference: Hog Island · 2026-04-15

Group: Water visible above the boat’s bow

The camera is positioned just 2 inches above the water’s surface. These observations zoom in on the shoreline three miles away. The boat is 0.68 miles away.

Weather & River Conditions

Historical · modeled air / NOAA river · nearby, not on-site

Historical context, not on-site measurements. Camera: 39°51′35.9″N, 75°16′47.0″W (project observation location). Air: Open-Meteo archive gridded model, not a station observation. River: nearby NOAA Philadelphia station 8545240, not the Hog Island camera site. River heights use MLLW; predicted tides are not observed water levels. Observed NOAA water levels may be preliminary (q=p), not final verified station data; quality codes and flags are preserved in the cache. All times America/New_York (NOAA local daylight time). Missing values remain unavailable. No ocean-wave or swell inference.

2026-04-15Approx. 10:11 AM ETRising tide predicted
Air · model
76.6 °F
Water
59.9 °F
Wind
5.2 mph
River
4.564 ft MLLW
Details & sources

Illustrative near-capture comparison at 10:11:05: median embedded still-photo clock; America/New_York assumed, camera clock/timezone not verified. Not a confirmed simultaneous measurement. Model grid returned: 39.89455, -75.31381. NOAA Philadelphia station: 39.9331, −75.1420 (upstream); nearby context can differ from the camera site.

Air temperature
76.6 °F
Modeled · Open-Meteo grid · 2026-04-15T10:00
Water temperature
59.9 °F
Observed · NOAA Philadelphia 8545240 · 2026-04-15 10:12
Wind
5.2 mph
Modeled · hourly grid
Gust
14.3 mph
Modeled · hourly grid
Direction
235 ° true
Modeled · hourly grid
Humidity
59 %
Modeled · hourly grid
Dew point
61.1 °F
Modeled · hourly grid
Surface pressure
1015.5 hPa
Modeled · hourly grid
Cloud
98 %
Modeled · hourly grid
Precipitation
0 in
Modeled · hourly grid
River level
4.564 ft MLLW
Observed · Philadelphia · 2026-04-15 10:12 · verified
Visibility
Unavailable
Unavailable · archive does not provide visibility

Daily summary · modeled air / astronomical sunrise and sunset: Air low: 63.4 °F; Air high: 89.4 °F; Daily precipitation: 0.016 in; Sunrise: 2026-04-15T06:23; Sunset: 2026-04-15T19:39; Water temperature observed sample range: 59.2–62.4 °F (240 samples); River level observed sample range: -0.016–6.965 ft MLLW (240 samples)

Predicted tides · NOAA Philadelphia 8545240 · ft MLLW: High 2026-04-15 00:21 · 6.41 ft MLLW; Low 2026-04-15 07:08 · 0.486 ft MLLW; High 2026-04-15 12:42 · 6.33 ft MLLW; Low 2026-04-15 19:31 · 0.577 ft MLLW

Hourly modeled atmosphere (24 hours)
Local timeAir temperature (°F)Wind (mph)Gust (mph)Direction (° true)Humidity (%)Dew point (°F)Surface pressure (hPa)Cloud (%)Precipitation (in)
2026-04-15T00:0071.26.827.12846759.91013.8980.016
2026-04-15T01:0069.95.5132667159.91013.8830
2026-04-15T02:0068.14.810.12317961.31013.61000
2026-04-15T03:0066.76.111.62208562.21013.6890
2026-04-15T04:0064.8511.62429061.61013.6910
2026-04-15T05:00644.78.92608960.81013.7470
2026-04-15T06:0063.448.32628859.91013.820
2026-04-15T07:0063.75.18.72648559.21014.4460
2026-04-15T08:0067.33.711.22188060.81014.7220
2026-04-15T09:0072.65.613.92336760.81015.41000
2026-04-15T10:0076.65.214.32355961.11015.5980
2026-04-15T11:0080.3717.42435160.51015280
2026-04-15T12:0084.69.823.72244359.71014340
2026-04-15T13:0086.811.126.82154059.61012.7180
2026-04-15T14:0089.111.3302293557.71012.2850
2026-04-15T15:0089.412.228.42353558.21011.91000
2026-04-15T16:0088.612.428.62313557.71011.4980
2026-04-15T17:0088.71328.92333356.31011.3990
2026-04-15T18:0088.111.328.62303355.41011.41000
2026-04-15T19:0085.18.924.22153856.51011.9970
2026-04-15T20:0082.59.318.12114357.51011.81000
2026-04-15T21:0080.29.720.42074758.21012.21000
2026-04-15T22:0077.59.819.22075459.51012.61000
2026-04-15T23:00768.918.82145659.31012.21000
Observed river samples (480)
ProductLocal timeValue
Water temperature2026-04-15 00:0060.3 °F
Water temperature2026-04-15 00:0660.3 °F
Water temperature2026-04-15 00:1260.3 °F
Water temperature2026-04-15 00:1860.3 °F
Water temperature2026-04-15 00:2460.4 °F
Water temperature2026-04-15 00:3060.4 °F
Water temperature2026-04-15 00:3660.4 °F
Water temperature2026-04-15 00:4260.4 °F
Water temperature2026-04-15 00:4860.4 °F
Water temperature2026-04-15 00:5460.4 °F
Water temperature2026-04-15 01:0060.4 °F
Water temperature2026-04-15 01:0660.4 °F
Water temperature2026-04-15 01:1260.4 °F
Water temperature2026-04-15 01:1860.4 °F
Water temperature2026-04-15 01:2460.4 °F
Water temperature2026-04-15 01:3060.6 °F
Water temperature2026-04-15 01:3660.6 °F
Water temperature2026-04-15 01:4260.6 °F
Water temperature2026-04-15 01:4860.6 °F
Water temperature2026-04-15 01:5460.8 °F
Water temperature2026-04-15 02:0060.8 °F
Water temperature2026-04-15 02:0660.8 °F
Water temperature2026-04-15 02:1260.8 °F
Water temperature2026-04-15 02:1861 °F
Water temperature2026-04-15 02:2461 °F
Water temperature2026-04-15 02:3061 °F
Water temperature2026-04-15 02:3661 °F
Water temperature2026-04-15 02:4261 °F
Water temperature2026-04-15 02:4861 °F
Water temperature2026-04-15 02:5461 °F
Water temperature2026-04-15 03:0061 °F
Water temperature2026-04-15 03:0661.2 °F
Water temperature2026-04-15 03:1261.2 °F
Water temperature2026-04-15 03:1861.2 °F
Water temperature2026-04-15 03:2461.2 °F
Water temperature2026-04-15 03:3061.2 °F
Water temperature2026-04-15 03:3661.2 °F
Water temperature2026-04-15 03:4261.2 °F
Water temperature2026-04-15 03:4861.2 °F
Water temperature2026-04-15 03:5461.2 °F
Water temperature2026-04-15 04:0061.2 °F
Water temperature2026-04-15 04:0661.2 °F
Water temperature2026-04-15 04:1261.2 °F
Water temperature2026-04-15 04:1861.2 °F
Water temperature2026-04-15 04:2461.2 °F
Water temperature2026-04-15 04:3061.3 °F
Water temperature2026-04-15 04:3661.3 °F
Water temperature2026-04-15 04:4261.3 °F
Water temperature2026-04-15 04:4861.3 °F
Water temperature2026-04-15 04:5461.3 °F
Water temperature2026-04-15 05:0061.3 °F
Water temperature2026-04-15 05:0661.3 °F
Water temperature2026-04-15 05:1261.3 °F
Water temperature2026-04-15 05:1861.3 °F
Water temperature2026-04-15 05:2461.3 °F
Water temperature2026-04-15 05:3061.3 °F
Water temperature2026-04-15 05:3661.3 °F
Water temperature2026-04-15 05:4261.3 °F
Water temperature2026-04-15 05:4861.3 °F
Water temperature2026-04-15 05:5461.3 °F
Water temperature2026-04-15 06:0061.3 °F
Water temperature2026-04-15 06:0661.3 °F
Water temperature2026-04-15 06:1261.3 °F
Water temperature2026-04-15 06:1861.3 °F
Water temperature2026-04-15 06:2461.3 °F
Water temperature2026-04-15 06:3061.3 °F
Water temperature2026-04-15 06:3661.3 °F
Water temperature2026-04-15 06:4261.3 °F
Water temperature2026-04-15 06:4861.3 °F
Water temperature2026-04-15 06:5461.3 °F
Water temperature2026-04-15 07:0061.3 °F
Water temperature2026-04-15 07:0661.5 °F
Water temperature2026-04-15 07:1261.5 °F
Water temperature2026-04-15 07:1861.5 °F
Water temperature2026-04-15 07:2461.5 °F
Water temperature2026-04-15 07:3061.5 °F
Water temperature2026-04-15 07:3661.5 °F
Water temperature2026-04-15 07:4261.5 °F
Water temperature2026-04-15 07:4861.5 °F
Water temperature2026-04-15 07:5461.5 °F
Water temperature2026-04-15 08:0061.3 °F
Water temperature2026-04-15 08:0661.3 °F
Water temperature2026-04-15 08:1261.3 °F
Water temperature2026-04-15 08:1861.3 °F
Water temperature2026-04-15 08:2461.2 °F
Water temperature2026-04-15 08:3061 °F
Water temperature2026-04-15 08:3660.3 °F
Water temperature2026-04-15 08:4259.9 °F
Water temperature2026-04-15 08:4859.5 °F
Water temperature2026-04-15 08:5459.2 °F
Water temperature2026-04-15 09:0059.2 °F
Water temperature2026-04-15 09:0659.2 °F
Water temperature2026-04-15 09:1259.2 °F
Water temperature2026-04-15 09:1859.4 °F
Water temperature2026-04-15 09:2459.4 °F
Water temperature2026-04-15 09:3059.5 °F
Water temperature2026-04-15 09:3659.5 °F
Water temperature2026-04-15 09:4259.5 °F
Water temperature2026-04-15 09:4859.7 °F
Water temperature2026-04-15 09:5459.7 °F
Water temperature2026-04-15 10:0059.7 °F
Water temperature2026-04-15 10:0659.9 °F
Water temperature2026-04-15 10:1259.9 °F
Water temperature2026-04-15 10:1859.9 °F
Water temperature2026-04-15 10:2459.9 °F
Water temperature2026-04-15 10:3060.1 °F
Water temperature2026-04-15 10:3660.1 °F
Water temperature2026-04-15 10:4260.1 °F
Water temperature2026-04-15 10:4860.1 °F
Water temperature2026-04-15 10:5460.1 °F
Water temperature2026-04-15 11:0060.1 °F
Water temperature2026-04-15 11:0660.3 °F
Water temperature2026-04-15 11:1260.3 °F
Water temperature2026-04-15 11:1860.3 °F
Water temperature2026-04-15 11:2460.3 °F
Water temperature2026-04-15 11:3060.3 °F
Water temperature2026-04-15 11:3660.3 °F
Water temperature2026-04-15 11:4260.3 °F
Water temperature2026-04-15 11:4860.4 °F
Water temperature2026-04-15 11:5460.4 °F
Water temperature2026-04-15 12:0060.4 °F
Water temperature2026-04-15 12:0660.4 °F
Water temperature2026-04-15 12:1260.4 °F
Water temperature2026-04-15 12:1860.4 °F
Water temperature2026-04-15 12:2460.4 °F
Water temperature2026-04-15 12:3060.4 °F
Water temperature2026-04-15 12:3660.4 °F
Water temperature2026-04-15 12:4260.4 °F
Water temperature2026-04-15 12:4860.4 °F
Water temperature2026-04-15 12:5460.6 °F
Water temperature2026-04-15 13:0060.6 °F
Water temperature2026-04-15 13:0660.6 °F
Water temperature2026-04-15 13:1260.6 °F
Water temperature2026-04-15 13:1860.6 °F
Water temperature2026-04-15 13:2460.6 °F
Water temperature2026-04-15 13:3060.6 °F
Water temperature2026-04-15 13:3660.6 °F
Water temperature2026-04-15 13:4260.6 °F
Water temperature2026-04-15 13:4860.6 °F
Water temperature2026-04-15 13:5460.6 °F
Water temperature2026-04-15 14:0060.8 °F
Water temperature2026-04-15 14:0660.8 °F
Water temperature2026-04-15 14:1260.8 °F
Water temperature2026-04-15 14:1860.8 °F
Water temperature2026-04-15 14:2461 °F
Water temperature2026-04-15 14:3061 °F
Water temperature2026-04-15 14:3661 °F
Water temperature2026-04-15 14:4261 °F
Water temperature2026-04-15 14:4861 °F
Water temperature2026-04-15 14:5461.2 °F
Water temperature2026-04-15 15:0061.2 °F
Water temperature2026-04-15 15:0661.2 °F
Water temperature2026-04-15 15:1261.3 °F
Water temperature2026-04-15 15:1861.3 °F
Water temperature2026-04-15 15:2461.3 °F
Water temperature2026-04-15 15:3061.3 °F
Water temperature2026-04-15 15:3661.5 °F
Water temperature2026-04-15 15:4261.5 °F
Water temperature2026-04-15 15:4861.5 °F
Water temperature2026-04-15 15:5461.5 °F
Water temperature2026-04-15 16:0061.5 °F
Water temperature2026-04-15 16:0661.5 °F
Water temperature2026-04-15 16:1261.7 °F
Water temperature2026-04-15 16:1861.7 °F
Water temperature2026-04-15 16:2461.7 °F
Water temperature2026-04-15 16:3061.7 °F
Water temperature2026-04-15 16:3661.7 °F
Water temperature2026-04-15 16:4261.7 °F
Water temperature2026-04-15 16:4861.7 °F
Water temperature2026-04-15 16:5461.9 °F
Water temperature2026-04-15 17:0061.9 °F
Water temperature2026-04-15 17:0661.9 °F
Water temperature2026-04-15 17:1261.9 °F
Water temperature2026-04-15 17:1861.9 °F
Water temperature2026-04-15 17:2461.9 °F
Water temperature2026-04-15 17:3061.9 °F
Water temperature2026-04-15 17:3661.9 °F
Water temperature2026-04-15 17:4262.1 °F
Water temperature2026-04-15 17:4862.1 °F
Water temperature2026-04-15 17:5462.1 °F
Water temperature2026-04-15 18:0062.1 °F
Water temperature2026-04-15 18:0662.1 °F
Water temperature2026-04-15 18:1262.1 °F
Water temperature2026-04-15 18:1862.1 °F
Water temperature2026-04-15 18:2462.1 °F
Water temperature2026-04-15 18:3062.1 °F
Water temperature2026-04-15 18:3662.2 °F
Water temperature2026-04-15 18:4262.2 °F
Water temperature2026-04-15 18:4862.2 °F
Water temperature2026-04-15 18:5462.2 °F
Water temperature2026-04-15 19:0062.2 °F
Water temperature2026-04-15 19:0662.2 °F
Water temperature2026-04-15 19:1262.2 °F
Water temperature2026-04-15 19:1862.2 °F
Water temperature2026-04-15 19:2462.2 °F
Water temperature2026-04-15 19:3062.2 °F
Water temperature2026-04-15 19:3662.2 °F
Water temperature2026-04-15 19:4262.2 °F
Water temperature2026-04-15 19:4862.2 °F
Water temperature2026-04-15 19:5462.4 °F
Water temperature2026-04-15 20:0062.4 °F
Water temperature2026-04-15 20:0662.4 °F
Water temperature2026-04-15 20:1262.4 °F
Water temperature2026-04-15 20:1862.2 °F
Water temperature2026-04-15 20:2462.2 °F
Water temperature2026-04-15 20:3062.2 °F
Water temperature2026-04-15 20:3662.1 °F
Water temperature2026-04-15 20:4261.5 °F
Water temperature2026-04-15 20:4861 °F
Water temperature2026-04-15 20:5460.6 °F
Water temperature2026-04-15 21:0060.3 °F
Water temperature2026-04-15 21:0659.9 °F
Water temperature2026-04-15 21:1259.7 °F
Water temperature2026-04-15 21:1860.1 °F
Water temperature2026-04-15 21:2461 °F
Water temperature2026-04-15 21:3061 °F
Water temperature2026-04-15 21:3661.2 °F
Water temperature2026-04-15 21:4261.2 °F
Water temperature2026-04-15 21:4861.3 °F
Water temperature2026-04-15 21:5461.3 °F
Water temperature2026-04-15 22:0061.3 °F
Water temperature2026-04-15 22:0661.3 °F
Water temperature2026-04-15 22:1261.3 °F
Water temperature2026-04-15 22:1861.2 °F
Water temperature2026-04-15 22:2461.3 °F
Water temperature2026-04-15 22:3061.2 °F
Water temperature2026-04-15 22:3661.3 °F
Water temperature2026-04-15 22:4261.3 °F
Water temperature2026-04-15 22:4861.3 °F
Water temperature2026-04-15 22:5461.3 °F
Water temperature2026-04-15 23:0061.3 °F
Water temperature2026-04-15 23:0661.3 °F
Water temperature2026-04-15 23:1261.3 °F
Water temperature2026-04-15 23:1861.3 °F
Water temperature2026-04-15 23:2461.3 °F
Water temperature2026-04-15 23:3061.2 °F
Water temperature2026-04-15 23:3661 °F
Water temperature2026-04-15 23:4261 °F
Water temperature2026-04-15 23:4861 °F
Water temperature2026-04-15 23:5461 °F
River level2026-04-15 00:006.742 ft MLLW
River level2026-04-15 00:066.765 ft MLLW
River level2026-04-15 00:126.772 ft MLLW
River level2026-04-15 00:186.775 ft MLLW
River level2026-04-15 00:246.775 ft MLLW
River level2026-04-15 00:306.749 ft MLLW
River level2026-04-15 00:366.722 ft MLLW
River level2026-04-15 00:426.69 ft MLLW
River level2026-04-15 00:486.65 ft MLLW
River level2026-04-15 00:546.594 ft MLLW
River level2026-04-15 01:006.519 ft MLLW
River level2026-04-15 01:066.424 ft MLLW
River level2026-04-15 01:126.335 ft MLLW
River level2026-04-15 01:186.23 ft MLLW
River level2026-04-15 01:246.148 ft MLLW
River level2026-04-15 01:306.014 ft MLLW
River level2026-04-15 01:365.896 ft MLLW
River level2026-04-15 01:425.784 ft MLLW
River level2026-04-15 01:485.653 ft MLLW
River level2026-04-15 01:545.551 ft MLLW
River level2026-04-15 02:005.43 ft MLLW
River level2026-04-15 02:065.289 ft MLLW
River level2026-04-15 02:125.174 ft MLLW
River level2026-04-15 02:185.052 ft MLLW
River level2026-04-15 02:244.934 ft MLLW
River level2026-04-15 02:304.816 ft MLLW
River level2026-04-15 02:364.701 ft MLLW
River level2026-04-15 02:424.593 ft MLLW
River level2026-04-15 02:484.475 ft MLLW
River level2026-04-15 02:544.367 ft MLLW
River level2026-04-15 03:004.255 ft MLLW
River level2026-04-15 03:064.15 ft MLLW
River level2026-04-15 03:124.042 ft MLLW
River level2026-04-15 03:183.94 ft MLLW
River level2026-04-15 03:243.832 ft MLLW
River level2026-04-15 03:303.724 ft MLLW
River level2026-04-15 03:363.619 ft MLLW
River level2026-04-15 03:423.507 ft MLLW
River level2026-04-15 03:483.389 ft MLLW
River level2026-04-15 03:543.291 ft MLLW
River level2026-04-15 04:003.192 ft MLLW
River level2026-04-15 04:063.074 ft MLLW
River level2026-04-15 04:122.966 ft MLLW
River level2026-04-15 04:182.854 ft MLLW
River level2026-04-15 04:242.743 ft MLLW
River level2026-04-15 04:302.638 ft MLLW
River level2026-04-15 04:362.526 ft MLLW
River level2026-04-15 04:422.415 ft MLLW
River level2026-04-15 04:482.306 ft MLLW
River level2026-04-15 04:542.198 ft MLLW
River level2026-04-15 05:002.09 ft MLLW
River level2026-04-15 05:061.972 ft MLLW
River level2026-04-15 05:121.864 ft MLLW
River level2026-04-15 05:181.755 ft MLLW
River level2026-04-15 05:241.644 ft MLLW
River level2026-04-15 05:301.545 ft MLLW
River level2026-04-15 05:361.44 ft MLLW
River level2026-04-15 05:421.342 ft MLLW
River level2026-04-15 05:481.237 ft MLLW
River level2026-04-15 05:541.135 ft MLLW
River level2026-04-15 06:001.037 ft MLLW
River level2026-04-15 06:060.938 ft MLLW
River level2026-04-15 06:120.833 ft MLLW
River level2026-04-15 06:180.748 ft MLLW
River level2026-04-15 06:240.656 ft MLLW
River level2026-04-15 06:300.577 ft MLLW
River level2026-04-15 06:360.495 ft MLLW
River level2026-04-15 06:420.42 ft MLLW
River level2026-04-15 06:480.338 ft MLLW
River level2026-04-15 06:540.266 ft MLLW
River level2026-04-15 07:000.19 ft MLLW
River level2026-04-15 07:060.131 ft MLLW
River level2026-04-15 07:120.072 ft MLLW
River level2026-04-15 07:180.033 ft MLLW
River level2026-04-15 07:24-0.003 ft MLLW
River level2026-04-15 07:30-0.016 ft MLLW
River level2026-04-15 07:360.007 ft MLLW
River level2026-04-15 07:420.072 ft MLLW
River level2026-04-15 07:480.167 ft MLLW
River level2026-04-15 07:540.322 ft MLLW
River level2026-04-15 08:000.509 ft MLLW
River level2026-04-15 08:060.748 ft MLLW
River level2026-04-15 08:121.007 ft MLLW
River level2026-04-15 08:181.257 ft MLLW
River level2026-04-15 08:241.499 ft MLLW
River level2026-04-15 08:301.732 ft MLLW
River level2026-04-15 08:361.968 ft MLLW
River level2026-04-15 08:422.156 ft MLLW
River level2026-04-15 08:482.336 ft MLLW
River level2026-04-15 08:542.543 ft MLLW
River level2026-04-15 09:002.743 ft MLLW
River level2026-04-15 09:062.923 ft MLLW
River level2026-04-15 09:123.094 ft MLLW
River level2026-04-15 09:183.264 ft MLLW
River level2026-04-15 09:243.419 ft MLLW
River level2026-04-15 09:303.566 ft MLLW
River level2026-04-15 09:363.724 ft MLLW
River level2026-04-15 09:423.868 ft MLLW
River level2026-04-15 09:484.006 ft MLLW
River level2026-04-15 09:544.14 ft MLLW
River level2026-04-15 10:004.295 ft MLLW
River level2026-04-15 10:064.416 ft MLLW
River level2026-04-15 10:124.564 ft MLLW
River level2026-04-15 10:184.715 ft MLLW
River level2026-04-15 10:244.843 ft MLLW
River level2026-04-15 10:304.98 ft MLLW
River level2026-04-15 10:365.118 ft MLLW
River level2026-04-15 10:425.249 ft MLLW
River level2026-04-15 10:485.371 ft MLLW
River level2026-04-15 10:545.489 ft MLLW
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Source provenance and cached requests
Horizon distance · 2 in camera height
Geometric horizon0.50 mi
With standard refraction0.54 mi
Adjust height

Lens height above water. Assumed refraction: k=0 and 1/7—not measured.

Blank uses recorded height. Changes are not saved.

Refraction needed to match this observation

Recorded lens height: 2 in above water.

Required coefficientk ≈ +6.581
Downward bending needed46.1× standard refraction

This convex-Earth model requires light to bend downward 46.1 times as strongly as standard refraction. This is a calculated model requirement, not a measurement of the atmosphere.

Observation & model assumptions

Shoreline water at 3 miles · 3-foot bow at 0.68 miles · no visible horizon or detectable inferior mirage reported.

The reported water band above the bow equals the angular bow-top-to-waterline span. This equality is used only for April 15, April 16 and October 2.

Angular equality: θ_far−θ_bow = θ_bow−θ_waterline, with θ(z,d)=(z−h)/d+(k−1)d/(2R). This gives 3 feet of ray clearance above the bow.

One uniform-curvature convex-Earth model; positive k means downward bending. Standard k = +1/7 ≈ +0.143; Earth radius 3,958.76 miles. Water/bow fits use the small-angle parabolic approximation and assume the shoreline water is behind the bow on the same sightline. Lens height is above local water. Observer-provided distances, heights and classifications are not calibrated atmospheric measurements. No detectable mirage does not mean no refraction; this fit does not exclude layered explanations.

Photos

18 high-quality images ordered by capture date

Videos

2 video clips; poster frames shown where available