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Hog Island — April 16, 2026

Hog Island — April 16, 2026

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Reference: Hog Island · 2026-04-16

Group: Water visible above the boat’s bow

The camera is positioned 3 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.

2026-04-16Approx. 11:21 AM ETRising tide predicted
Air · model
86.8 °F
Water
61 °F
Wind
4.3 mph
River
5.505 ft MLLW
Details & sources

Illustrative near-capture comparison at 11:21:53: 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
86.8 °F
Modeled · Open-Meteo grid · 2026-04-16T11:00
Water temperature
61 °F
Observed · NOAA Philadelphia 8545240 · 2026-04-16 11:24
Wind
4.3 mph
Modeled · hourly grid
Gust
13.4 mph
Modeled · hourly grid
Direction
223 ° true
Modeled · hourly grid
Humidity
39 %
Modeled · hourly grid
Dew point
59.2 °F
Modeled · hourly grid
Surface pressure
1012.7 hPa
Modeled · hourly grid
Cloud
100 %
Modeled · hourly grid
Precipitation
0 in
Modeled · hourly grid
River level
5.505 ft MLLW
Observed · Philadelphia · 2026-04-16 11:24 · verified
Visibility
Unavailable
Unavailable · archive does not provide visibility

Daily summary · modeled air / astronomical sunrise and sunset: Air low: 66.1 °F; Air high: 90.4 °F; Daily precipitation: 0 in; Sunrise: 2026-04-16T06:22; Sunset: 2026-04-16T19:40; Water temperature observed sample range: 60.1–63.5 °F (240 samples); River level observed sample range: 0.256–7.303 ft MLLW (240 samples)

Predicted tides · NOAA Philadelphia 8545240 · ft MLLW: High 2026-04-16 01:05 · 6.722 ft MLLW; Low 2026-04-16 08:02 · 0.386 ft MLLW; High 2026-04-16 13:29 · 6.305 ft MLLW; Low 2026-04-16 20:18 · 0.555 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)
2026-04-16T00:0074.68.617.22165858.81012.2840
2026-04-16T01:0073.67.716.32185958.21012.4990
2026-04-16T02:0073.45.6152566158.91011.8990
2026-04-16T03:0071.22.910.525765591011.81000
2026-04-16T04:0069.42.46.32487059.11011.9640
2026-04-16T05:0067.72.64.523674591011.81000
2026-04-16T06:0066.43.56.32357758.91012.61000
2026-04-16T07:0066.13.56.32377658.51013.2970
2026-04-16T08:0070.82.77.82326458.21013.5950
2026-04-16T09:0076.91.57.22125358.61013.4740
2026-04-16T10:0082.92.710.31974559.510131000
2026-04-16T11:0086.84.313.42233959.21012.71000
2026-04-16T12:0089.56.318.82303457.310121000
2026-04-16T13:00907.920.82193256.61011.21000
2026-04-16T14:0090.41023.32103054.81010.41000
2026-04-16T15:0090.110.825.92023256.11009.61000
2026-04-16T16:0089.611.626.81973255.91008.3580
2026-04-16T17:0088.71227.71923456.61007.7650
2026-04-16T18:0086.811.227.11853858.41007.3210
2026-04-16T19:0083.78.724.61934861.61007.6560
2026-04-16T20:0082.19.417.72005061.81007650
2026-04-16T21:0080.210.520.62045060.11007.5740
2026-04-16T22:0078.49.420.82005359.91007.5700
2026-04-16T23:0076.48.618.62185659.71007.3390
Observed river samples (480)
ProductLocal timeValue
Water temperature2026-04-16 00:0060.8 °F
Water temperature2026-04-16 00:0661 °F
Water temperature2026-04-16 00:1261.2 °F
Water temperature2026-04-16 00:1861.2 °F
Water temperature2026-04-16 00:2461.2 °F
Water temperature2026-04-16 00:3061.2 °F
Water temperature2026-04-16 00:3661.2 °F
Water temperature2026-04-16 00:4261 °F
Water temperature2026-04-16 00:4861.2 °F
Water temperature2026-04-16 00:5461.2 °F
Water temperature2026-04-16 01:0061.2 °F
Water temperature2026-04-16 01:0661.2 °F
Water temperature2026-04-16 01:1261.3 °F
Water temperature2026-04-16 01:1861.3 °F
Water temperature2026-04-16 01:2461.3 °F
Water temperature2026-04-16 01:3061.3 °F
Water temperature2026-04-16 01:3661.5 °F
Water temperature2026-04-16 01:4261.5 °F
Water temperature2026-04-16 01:4861.5 °F
Water temperature2026-04-16 01:5461.5 °F
Water temperature2026-04-16 02:0061.5 °F
Water temperature2026-04-16 02:0661.5 °F
Water temperature2026-04-16 02:1261.5 °F
Water temperature2026-04-16 02:1861.7 °F
Water temperature2026-04-16 02:2461.7 °F
Water temperature2026-04-16 02:3061.7 °F
Water temperature2026-04-16 02:3661.7 °F
Water temperature2026-04-16 02:4261.9 °F
Water temperature2026-04-16 02:4861.9 °F
Water temperature2026-04-16 02:5461.9 °F
Water temperature2026-04-16 03:0061.9 °F
Water temperature2026-04-16 03:0661.9 °F
Water temperature2026-04-16 03:1262.1 °F
Water temperature2026-04-16 03:1862.1 °F
Water temperature2026-04-16 03:2462.1 °F
Water temperature2026-04-16 03:3062.1 °F
Water temperature2026-04-16 03:3662.2 °F
Water temperature2026-04-16 03:4262.2 °F
Water temperature2026-04-16 03:4862.2 °F
Water temperature2026-04-16 03:5462.2 °F
Water temperature2026-04-16 04:0062.2 °F
Water temperature2026-04-16 04:0662.2 °F
Water temperature2026-04-16 04:1262.2 °F
Water temperature2026-04-16 04:1862.2 °F
Water temperature2026-04-16 04:2462.2 °F
Water temperature2026-04-16 04:3062.2 °F
Water temperature2026-04-16 04:3662.4 °F
Water temperature2026-04-16 04:4262.4 °F
Water temperature2026-04-16 04:4862.4 °F
Water temperature2026-04-16 04:5462.4 °F
Water temperature2026-04-16 05:0062.4 °F
Water temperature2026-04-16 05:0662.4 °F
Water temperature2026-04-16 05:1262.4 °F
Water temperature2026-04-16 05:1862.4 °F
Water temperature2026-04-16 05:2462.4 °F
Water temperature2026-04-16 05:3062.4 °F
Water temperature2026-04-16 05:3662.4 °F
Water temperature2026-04-16 05:4262.4 °F
Water temperature2026-04-16 05:4862.4 °F
Water temperature2026-04-16 05:5462.4 °F
Water temperature2026-04-16 06:0062.4 °F
Water temperature2026-04-16 06:0662.6 °F
Water temperature2026-04-16 06:1262.6 °F
Water temperature2026-04-16 06:1862.6 °F
Water temperature2026-04-16 06:2462.6 °F
Water temperature2026-04-16 06:3062.6 °F
Water temperature2026-04-16 06:3662.6 °F
Water temperature2026-04-16 06:4262.6 °F
Water temperature2026-04-16 06:4862.6 °F
Water temperature2026-04-16 06:5462.6 °F
Water temperature2026-04-16 07:0062.6 °F
Water temperature2026-04-16 07:0662.6 °F
Water temperature2026-04-16 07:1262.6 °F
Water temperature2026-04-16 07:1862.6 °F
Water temperature2026-04-16 07:2462.6 °F
Water temperature2026-04-16 07:3062.6 °F
Water temperature2026-04-16 07:3662.6 °F
Water temperature2026-04-16 07:4262.6 °F
Water temperature2026-04-16 07:4862.6 °F
Water temperature2026-04-16 07:5462.6 °F
Water temperature2026-04-16 08:0062.6 °F
Water temperature2026-04-16 08:0662.6 °F
Water temperature2026-04-16 08:1262.6 °F
Water temperature2026-04-16 08:1862.6 °F
Water temperature2026-04-16 08:2462.6 °F
Water temperature2026-04-16 08:3062.6 °F
Water temperature2026-04-16 08:3662.6 °F
Water temperature2026-04-16 08:4262.6 °F
Water temperature2026-04-16 08:4862.6 °F
Water temperature2026-04-16 08:5462.6 °F
Water temperature2026-04-16 09:0062.6 °F
Water temperature2026-04-16 09:0662.4 °F
Water temperature2026-04-16 09:1262.2 °F
Water temperature2026-04-16 09:1861.9 °F
Water temperature2026-04-16 09:2461.2 °F
Water temperature2026-04-16 09:3060.8 °F
Water temperature2026-04-16 09:3660.4 °F
Water temperature2026-04-16 09:4260.1 °F
Water temperature2026-04-16 09:4860.1 °F
Water temperature2026-04-16 09:5460.1 °F
Water temperature2026-04-16 10:0060.1 °F
Water temperature2026-04-16 10:0660.1 °F
Water temperature2026-04-16 10:1260.3 °F
Water temperature2026-04-16 10:1860.3 °F
Water temperature2026-04-16 10:2460.3 °F
Water temperature2026-04-16 10:3060.4 °F
Water temperature2026-04-16 10:3660.4 °F
Water temperature2026-04-16 10:4260.4 °F
Water temperature2026-04-16 10:4860.6 °F
Water temperature2026-04-16 10:5460.6 °F
Water temperature2026-04-16 11:0060.8 °F
Water temperature2026-04-16 11:0660.8 °F
Water temperature2026-04-16 11:1260.8 °F
Water temperature2026-04-16 11:1861 °F
Water temperature2026-04-16 11:2461 °F
Water temperature2026-04-16 11:3061 °F
Water temperature2026-04-16 11:3661.2 °F
Water temperature2026-04-16 11:4261.2 °F
Water temperature2026-04-16 11:4861.2 °F
Water temperature2026-04-16 11:5461.2 °F
Water temperature2026-04-16 12:0061.3 °F
Water temperature2026-04-16 12:0661.3 °F
Water temperature2026-04-16 12:1261.3 °F
Water temperature2026-04-16 12:1861.3 °F
Water temperature2026-04-16 12:2461.3 °F
Water temperature2026-04-16 12:3061.5 °F
Water temperature2026-04-16 12:3661.5 °F
Water temperature2026-04-16 12:4261.5 °F
Water temperature2026-04-16 12:4861.5 °F
Water temperature2026-04-16 12:5461.5 °F
Water temperature2026-04-16 13:0061.5 °F
Water temperature2026-04-16 13:0661.5 °F
Water temperature2026-04-16 13:1261.7 °F
Water temperature2026-04-16 13:1861.7 °F
Water temperature2026-04-16 13:2461.7 °F
Water temperature2026-04-16 13:3061.7 °F
Water temperature2026-04-16 13:3661.7 °F
Water temperature2026-04-16 13:4261.7 °F
Water temperature2026-04-16 13:4861.7 °F
Water temperature2026-04-16 13:5461.7 °F
Water temperature2026-04-16 14:0061.7 °F
Water temperature2026-04-16 14:0661.7 °F
Water temperature2026-04-16 14:1261.9 °F
Water temperature2026-04-16 14:1861.9 °F
Water temperature2026-04-16 14:2461.9 °F
Water temperature2026-04-16 14:3061.9 °F
Water temperature2026-04-16 14:3661.9 °F
Water temperature2026-04-16 14:4261.9 °F
Water temperature2026-04-16 14:4862.1 °F
Water temperature2026-04-16 14:5462.1 °F
Water temperature2026-04-16 15:0062.1 °F
Water temperature2026-04-16 15:0662.1 °F
Water temperature2026-04-16 15:1262.2 °F
Water temperature2026-04-16 15:1862.2 °F
Water temperature2026-04-16 15:2462.2 °F
Water temperature2026-04-16 15:3062.4 °F
Water temperature2026-04-16 15:3662.4 °F
Water temperature2026-04-16 15:4262.6 °F
Water temperature2026-04-16 15:4862.6 °F
Water temperature2026-04-16 15:5462.6 °F
Water temperature2026-04-16 16:0062.6 °F
Water temperature2026-04-16 16:0662.6 °F
Water temperature2026-04-16 16:1262.8 °F
Water temperature2026-04-16 16:1862.8 °F
Water temperature2026-04-16 16:2462.8 °F
Water temperature2026-04-16 16:3062.8 °F
Water temperature2026-04-16 16:3662.8 °F
Water temperature2026-04-16 16:4262.8 °F
Water temperature2026-04-16 16:4862.8 °F
Water temperature2026-04-16 16:5463 °F
Water temperature2026-04-16 17:0063 °F
Water temperature2026-04-16 17:0663 °F
Water temperature2026-04-16 17:1263 °F
Water temperature2026-04-16 17:1863 °F
Water temperature2026-04-16 17:2463 °F
Water temperature2026-04-16 17:3063 °F
Water temperature2026-04-16 17:3663 °F
Water temperature2026-04-16 17:4263.1 °F
Water temperature2026-04-16 17:4863.1 °F
Water temperature2026-04-16 17:5463.1 °F
Water temperature2026-04-16 18:0063.1 °F
Water temperature2026-04-16 18:0663.1 °F
Water temperature2026-04-16 18:1263.1 °F
Water temperature2026-04-16 18:1863.1 °F
Water temperature2026-04-16 18:2463.1 °F
Water temperature2026-04-16 18:3063.1 °F
Water temperature2026-04-16 18:3663.1 °F
Water temperature2026-04-16 18:4263.1 °F
Water temperature2026-04-16 18:4863.1 °F
Water temperature2026-04-16 18:5463.3 °F
Water temperature2026-04-16 19:0063.3 °F
Water temperature2026-04-16 19:0663.3 °F
Water temperature2026-04-16 19:1263.3 °F
Water temperature2026-04-16 19:1863.3 °F
Water temperature2026-04-16 19:2463.3 °F
Water temperature2026-04-16 19:3063.3 °F
Water temperature2026-04-16 19:3663.3 °F
Water temperature2026-04-16 19:4263.3 °F
Water temperature2026-04-16 19:4863.3 °F
Water temperature2026-04-16 19:5463.3 °F
Water temperature2026-04-16 20:0063.5 °F
Water temperature2026-04-16 20:0663.5 °F
Water temperature2026-04-16 20:1263.5 °F
Water temperature2026-04-16 20:1863.5 °F
Water temperature2026-04-16 20:2463.5 °F
Water temperature2026-04-16 20:3063.5 °F
Water temperature2026-04-16 20:3663.5 °F
Water temperature2026-04-16 20:4263.5 °F
Water temperature2026-04-16 20:4863.5 °F
Water temperature2026-04-16 20:5463.5 °F
Water temperature2026-04-16 21:0063.5 °F
Water temperature2026-04-16 21:0663.3 °F
Water temperature2026-04-16 21:1263.3 °F
Water temperature2026-04-16 21:1863 °F
Water temperature2026-04-16 21:2462.4 °F
Water temperature2026-04-16 21:3061.5 °F
Water temperature2026-04-16 21:3661 °F
Water temperature2026-04-16 21:4260.6 °F
Water temperature2026-04-16 21:4860.6 °F
Water temperature2026-04-16 21:5460.6 °F
Water temperature2026-04-16 22:0060.6 °F
Water temperature2026-04-16 22:0660.6 °F
Water temperature2026-04-16 22:1260.8 °F
Water temperature2026-04-16 22:1861 °F
Water temperature2026-04-16 22:2461 °F
Water temperature2026-04-16 22:3061.2 °F
Water temperature2026-04-16 22:3661.2 °F
Water temperature2026-04-16 22:4261.3 °F
Water temperature2026-04-16 22:4861.3 °F
Water temperature2026-04-16 22:5461.3 °F
Water temperature2026-04-16 23:0061.5 °F
Water temperature2026-04-16 23:0661.5 °F
Water temperature2026-04-16 23:1261.5 °F
Water temperature2026-04-16 23:1861.7 °F
Water temperature2026-04-16 23:2461.7 °F
Water temperature2026-04-16 23:3061.7 °F
Water temperature2026-04-16 23:3661.7 °F
Water temperature2026-04-16 23:4261.9 °F
Water temperature2026-04-16 23:4861.9 °F
Water temperature2026-04-16 23:5461.9 °F
River level2026-04-16 00:006.713 ft MLLW
River level2026-04-16 00:066.798 ft MLLW
River level2026-04-16 00:126.88 ft MLLW
River level2026-04-16 00:186.955 ft MLLW
River level2026-04-16 00:247.051 ft MLLW
River level2026-04-16 00:307.116 ft MLLW
River level2026-04-16 00:367.182 ft MLLW
River level2026-04-16 00:427.221 ft MLLW
River level2026-04-16 00:487.267 ft MLLW
River level2026-04-16 00:547.283 ft MLLW
River level2026-04-16 01:007.303 ft MLLW
River level2026-04-16 01:067.287 ft MLLW
River level2026-04-16 01:127.274 ft MLLW
River level2026-04-16 01:187.257 ft MLLW
River level2026-04-16 01:247.231 ft MLLW
River level2026-04-16 01:307.182 ft MLLW
River level2026-04-16 01:367.116 ft MLLW
River level2026-04-16 01:427.051 ft MLLW
River level2026-04-16 01:486.959 ft MLLW
River level2026-04-16 01:546.864 ft MLLW
River level2026-04-16 02:006.759 ft MLLW
River level2026-04-16 02:066.65 ft MLLW
River level2026-04-16 02:126.529 ft MLLW
River level2026-04-16 02:186.414 ft MLLW
River level2026-04-16 02:246.293 ft MLLW
River level2026-04-16 02:306.178 ft MLLW
River level2026-04-16 02:366.047 ft MLLW
River level2026-04-16 02:425.915 ft MLLW
River level2026-04-16 02:485.794 ft MLLW
River level2026-04-16 02:545.669 ft MLLW
River level2026-04-16 03:005.545 ft MLLW
River level2026-04-16 03:065.42 ft MLLW
River level2026-04-16 03:125.299 ft MLLW
River level2026-04-16 03:185.18 ft MLLW
River level2026-04-16 03:245.066 ft MLLW
River level2026-04-16 03:304.951 ft MLLW
River level2026-04-16 03:364.839 ft MLLW
River level2026-04-16 03:424.721 ft MLLW
River level2026-04-16 03:484.613 ft MLLW
River level2026-04-16 03:544.511 ft MLLW
River level2026-04-16 04:004.393 ft MLLW
River level2026-04-16 04:064.278 ft MLLW
River level2026-04-16 04:124.173 ft MLLW
River level2026-04-16 04:184.068 ft MLLW
River level2026-04-16 04:243.957 ft MLLW
River level2026-04-16 04:303.839 ft MLLW
River level2026-04-16 04:363.734 ft MLLW
River level2026-04-16 04:423.629 ft MLLW
River level2026-04-16 04:483.52 ft MLLW
River level2026-04-16 04:543.412 ft MLLW
River level2026-04-16 05:003.301 ft MLLW
River level2026-04-16 05:063.196 ft MLLW
River level2026-04-16 05:123.087 ft MLLW
River level2026-04-16 05:182.976 ft MLLW
River level2026-04-16 05:242.864 ft MLLW
River level2026-04-16 05:302.746 ft MLLW
River level2026-04-16 05:362.635 ft MLLW
River level2026-04-16 05:422.539 ft MLLW
River level2026-04-16 05:482.493 ft MLLW
River level2026-04-16 05:542.326 ft MLLW
River level2026-04-16 06:002.142 ft MLLW
River level2026-04-16 06:062.07 ft MLLW
River level2026-04-16 06:121.949 ft MLLW
River level2026-04-16 06:181.834 ft MLLW
River level2026-04-16 06:241.788 ft MLLW
River level2026-04-16 06:301.647 ft MLLW
River level2026-04-16 06:361.545 ft MLLW
River level2026-04-16 06:421.45 ft MLLW
River level2026-04-16 06:481.352 ft MLLW
River level2026-04-16 06:541.266 ft MLLW
River level2026-04-16 07:001.158 ft MLLW
River level2026-04-16 07:061.05 ft MLLW
River level2026-04-16 07:120.965 ft MLLW
River level2026-04-16 07:180.883 ft MLLW
River level2026-04-16 07:240.801 ft MLLW
River level2026-04-16 07:300.712 ft MLLW
River level2026-04-16 07:360.62 ft MLLW
River level2026-04-16 07:420.541 ft MLLW
River level2026-04-16 07:480.472 ft MLLW
River level2026-04-16 07:540.41 ft MLLW
River level2026-04-16 08:000.348 ft MLLW
River level2026-04-16 08:060.305 ft MLLW
River level2026-04-16 08:120.269 ft MLLW
River level2026-04-16 08:180.256 ft MLLW
River level2026-04-16 08:240.276 ft MLLW
River level2026-04-16 08:300.341 ft MLLW
River level2026-04-16 08:360.463 ft MLLW
River level2026-04-16 08:420.64 ft MLLW
River level2026-04-16 08:480.86 ft MLLW
River level2026-04-16 08:541.089 ft MLLW
River level2026-04-16 09:001.329 ft MLLW
River level2026-04-16 09:061.585 ft MLLW
River level2026-04-16 09:121.834 ft MLLW
River level2026-04-16 09:182.083 ft MLLW
River level2026-04-16 09:242.323 ft MLLW
River level2026-04-16 09:302.543 ft MLLW
River level2026-04-16 09:362.749 ft MLLW
River level2026-04-16 09:422.943 ft MLLW
River level2026-04-16 09:483.143 ft MLLW
River level2026-04-16 09:543.327 ft MLLW
River level2026-04-16 10:003.504 ft MLLW
River level2026-04-16 10:063.668 ft MLLW
River level2026-04-16 10:123.825 ft MLLW
River level2026-04-16 10:183.98 ft MLLW
River level2026-04-16 10:244.134 ft MLLW
River level2026-04-16 10:304.278 ft MLLW
River level2026-04-16 10:364.419 ft MLLW
River level2026-04-16 10:424.557 ft MLLW
River level2026-04-16 10:484.695 ft MLLW
River level2026-04-16 10:544.829 ft MLLW
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Source provenance and cached requests
Horizon distance · 3 in camera height
Geometric horizon0.61 mi
With standard refraction0.66 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: 3 in above water.

Required coefficientk ≈ +6.519
Downward bending needed45.6× standard refraction

This convex-Earth model requires light to bend downward 45.6 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

38 high-quality images ordered by capture date

Videos

7 video clips; poster frames shown where available