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Hog Island — May 18, 2026

Hog Island — May 18, 2026

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Reference: Hog Island · 2026-05-18

Group: Water visible above the boat’s bow

With the camera 4 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.

2026-05-18Approx. 2:03 PM ETRising tide predicted
Air · model
91.2 °F
Water
68.5 °F
Wind
7.5 mph
River
5.259 ft MLLW
Details & sources

Illustrative near-capture comparison at 14:03:54: 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
91.2 °F
Modeled · Open-Meteo grid · 2026-05-18T14:00
Water temperature
68.5 °F
Observed · NOAA Philadelphia 8545240 · 2026-05-18 14:06
Wind
7.5 mph
Modeled · hourly grid
Gust
20.6 mph
Modeled · hourly grid
Direction
207 ° true
Modeled · hourly grid
Humidity
38 %
Modeled · hourly grid
Dew point
61.8 °F
Modeled · hourly grid
Surface pressure
1020 hPa
Modeled · hourly grid
Cloud
13 %
Modeled · hourly grid
Precipitation
0 in
Modeled · hourly grid
River level
5.259 ft MLLW
Observed · Philadelphia · 2026-05-18 14:06 · verified
Visibility
Unavailable
Unavailable · archive does not provide visibility

Daily summary · modeled air / astronomical sunrise and sunset: Air low: 65 °F; Air high: 93 °F; Daily precipitation: 0.004 in; Sunrise: 2026-05-18T05:43; Sunset: 2026-05-18T20:12; Water temperature observed sample range: 68.4–69.3 °F (240 samples); River level observed sample range: -0.344–7.526 ft MLLW (240 samples)

Predicted tides · NOAA Philadelphia 8545240 · ft MLLW: High 2026-05-18 02:59 · 7.438 ft MLLW; Low 2026-05-18 10:23 · 0.444 ft MLLW; High 2026-05-18 15:39 · 5.909 ft MLLW; Low 2026-05-18 22:22 · 0.769 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)
2026-05-18T00:0070.55.711.22017562.31020.3520
2026-05-18T01:0069.45.710.72167761.71020.2470
2026-05-18T02:0067.4510.32118261.51020.2460
2026-05-18T03:0066.35.19.22158461.31020.3400
2026-05-18T04:0065.959.22248561.41020.4350
2026-05-18T05:0065.84.59.22318661.51020.6800
2026-05-18T06:00652.97.82228861.31020.9710
2026-05-18T07:00684.28.92098161.91021.7720
2026-05-18T08:0072.12.58.31727463.21022970
2026-05-18T09:0076.92.58.91856664.81021.9860
2026-05-18T10:00823.912.11855865.81021.8550
2026-05-18T11:0086.55.916.11885065.71021.6880
2026-05-18T12:0089.36.818.31894464.91021.3450
2026-05-18T13:0091.6719.91993963.41020.5610
2026-05-18T14:0091.27.520.62073861.81020130
2026-05-18T15:00938.522.41953762.61019.8460
2026-05-18T16:0092.89.622.41983762.51019.2190.004
2026-05-18T17:0091.411.226.219738621019.2150
2026-05-18T18:0089.910.625.51844263.71019.1130
2026-05-18T19:0086.58.523.31755266.91019.290
2026-05-18T20:00847.617.41795767.11019120
2026-05-18T21:0080.4815.91865964.71019.350
2026-05-18T22:0079.27.815.71935963.61019.840
2026-05-18T23:0079.38.216.62045863.31020.520
Observed river samples (480)
ProductLocal timeValue
Water temperature2026-05-18 00:0068.5 °F
Water temperature2026-05-18 00:0668.5 °F
Water temperature2026-05-18 00:1268.4 °F
Water temperature2026-05-18 00:1868.4 °F
Water temperature2026-05-18 00:2468.4 °F
Water temperature2026-05-18 00:3068.5 °F
Water temperature2026-05-18 00:3668.5 °F
Water temperature2026-05-18 00:4268.5 °F
Water temperature2026-05-18 00:4868.4 °F
Water temperature2026-05-18 00:5468.4 °F
Water temperature2026-05-18 01:0068.4 °F
Water temperature2026-05-18 01:0668.4 °F
Water temperature2026-05-18 01:1268.4 °F
Water temperature2026-05-18 01:1868.4 °F
Water temperature2026-05-18 01:2468.4 °F
Water temperature2026-05-18 01:3068.5 °F
Water temperature2026-05-18 01:3668.4 °F
Water temperature2026-05-18 01:4268.4 °F
Water temperature2026-05-18 01:4868.4 °F
Water temperature2026-05-18 01:5468.4 °F
Water temperature2026-05-18 02:0068.4 °F
Water temperature2026-05-18 02:0668.4 °F
Water temperature2026-05-18 02:1268.4 °F
Water temperature2026-05-18 02:1868.4 °F
Water temperature2026-05-18 02:2468.4 °F
Water temperature2026-05-18 02:3068.4 °F
Water temperature2026-05-18 02:3668.4 °F
Water temperature2026-05-18 02:4268.4 °F
Water temperature2026-05-18 02:4868.4 °F
Water temperature2026-05-18 02:5468.4 °F
Water temperature2026-05-18 03:0068.4 °F
Water temperature2026-05-18 03:0668.4 °F
Water temperature2026-05-18 03:1268.4 °F
Water temperature2026-05-18 03:1868.4 °F
Water temperature2026-05-18 03:2468.4 °F
Water temperature2026-05-18 03:3068.4 °F
Water temperature2026-05-18 03:3668.4 °F
Water temperature2026-05-18 03:4268.4 °F
Water temperature2026-05-18 03:4868.4 °F
Water temperature2026-05-18 03:5468.4 °F
Water temperature2026-05-18 04:0068.4 °F
Water temperature2026-05-18 04:0668.4 °F
Water temperature2026-05-18 04:1268.4 °F
Water temperature2026-05-18 04:1868.4 °F
Water temperature2026-05-18 04:2468.4 °F
Water temperature2026-05-18 04:3068.4 °F
Water temperature2026-05-18 04:3668.4 °F
Water temperature2026-05-18 04:4268.4 °F
Water temperature2026-05-18 04:4868.4 °F
Water temperature2026-05-18 04:5468.4 °F
Water temperature2026-05-18 05:0068.4 °F
Water temperature2026-05-18 05:0668.4 °F
Water temperature2026-05-18 05:1268.4 °F
Water temperature2026-05-18 05:1868.4 °F
Water temperature2026-05-18 05:2468.4 °F
Water temperature2026-05-18 05:3068.4 °F
Water temperature2026-05-18 05:3668.4 °F
Water temperature2026-05-18 05:4268.4 °F
Water temperature2026-05-18 05:4868.4 °F
Water temperature2026-05-18 05:5468.4 °F
Water temperature2026-05-18 06:0068.4 °F
Water temperature2026-05-18 06:0668.4 °F
Water temperature2026-05-18 06:1268.4 °F
Water temperature2026-05-18 06:1868.4 °F
Water temperature2026-05-18 06:2468.4 °F
Water temperature2026-05-18 06:3068.4 °F
Water temperature2026-05-18 06:3668.4 °F
Water temperature2026-05-18 06:4268.4 °F
Water temperature2026-05-18 06:4868.4 °F
Water temperature2026-05-18 06:5468.4 °F
Water temperature2026-05-18 07:0068.4 °F
Water temperature2026-05-18 07:0668.4 °F
Water temperature2026-05-18 07:1268.4 °F
Water temperature2026-05-18 07:1868.4 °F
Water temperature2026-05-18 07:2468.4 °F
Water temperature2026-05-18 07:3068.4 °F
Water temperature2026-05-18 07:3668.4 °F
Water temperature2026-05-18 07:4268.4 °F
Water temperature2026-05-18 07:4868.4 °F
Water temperature2026-05-18 07:5468.4 °F
Water temperature2026-05-18 08:0068.4 °F
Water temperature2026-05-18 08:0668.5 °F
Water temperature2026-05-18 08:1268.4 °F
Water temperature2026-05-18 08:1868.5 °F
Water temperature2026-05-18 08:2468.5 °F
Water temperature2026-05-18 08:3068.5 °F
Water temperature2026-05-18 08:3668.5 °F
Water temperature2026-05-18 08:4268.5 °F
Water temperature2026-05-18 08:4868.5 °F
Water temperature2026-05-18 08:5468.5 °F
Water temperature2026-05-18 09:0068.5 °F
Water temperature2026-05-18 09:0668.5 °F
Water temperature2026-05-18 09:1268.5 °F
Water temperature2026-05-18 09:1868.5 °F
Water temperature2026-05-18 09:2468.5 °F
Water temperature2026-05-18 09:3068.5 °F
Water temperature2026-05-18 09:3668.5 °F
Water temperature2026-05-18 09:4268.5 °F
Water temperature2026-05-18 09:4868.5 °F
Water temperature2026-05-18 09:5468.5 °F
Water temperature2026-05-18 10:0068.5 °F
Water temperature2026-05-18 10:0668.5 °F
Water temperature2026-05-18 10:1268.5 °F
Water temperature2026-05-18 10:1868.5 °F
Water temperature2026-05-18 10:2468.5 °F
Water temperature2026-05-18 10:3068.5 °F
Water temperature2026-05-18 10:3668.5 °F
Water temperature2026-05-18 10:4268.5 °F
Water temperature2026-05-18 10:4868.5 °F
Water temperature2026-05-18 10:5468.5 °F
Water temperature2026-05-18 11:0068.5 °F
Water temperature2026-05-18 11:0668.5 °F
Water temperature2026-05-18 11:1268.5 °F
Water temperature2026-05-18 11:1868.5 °F
Water temperature2026-05-18 11:2468.5 °F
Water temperature2026-05-18 11:3068.5 °F
Water temperature2026-05-18 11:3668.5 °F
Water temperature2026-05-18 11:4268.5 °F
Water temperature2026-05-18 11:4868.5 °F
Water temperature2026-05-18 11:5468.5 °F
Water temperature2026-05-18 12:0068.5 °F
Water temperature2026-05-18 12:0668.5 °F
Water temperature2026-05-18 12:1268.5 °F
Water temperature2026-05-18 12:1868.5 °F
Water temperature2026-05-18 12:2468.5 °F
Water temperature2026-05-18 12:3068.5 °F
Water temperature2026-05-18 12:3668.5 °F
Water temperature2026-05-18 12:4268.5 °F
Water temperature2026-05-18 12:4868.5 °F
Water temperature2026-05-18 12:5468.5 °F
Water temperature2026-05-18 13:0068.5 °F
Water temperature2026-05-18 13:0668.5 °F
Water temperature2026-05-18 13:1268.5 °F
Water temperature2026-05-18 13:1868.5 °F
Water temperature2026-05-18 13:2468.5 °F
Water temperature2026-05-18 13:3068.5 °F
Water temperature2026-05-18 13:3668.5 °F
Water temperature2026-05-18 13:4268.5 °F
Water temperature2026-05-18 13:4868.5 °F
Water temperature2026-05-18 13:5468.5 °F
Water temperature2026-05-18 14:0068.5 °F
Water temperature2026-05-18 14:0668.5 °F
Water temperature2026-05-18 14:1268.5 °F
Water temperature2026-05-18 14:1868.5 °F
Water temperature2026-05-18 14:2468.5 °F
Water temperature2026-05-18 14:3068.5 °F
Water temperature2026-05-18 14:3668.5 °F
Water temperature2026-05-18 14:4268.5 °F
Water temperature2026-05-18 14:4868.5 °F
Water temperature2026-05-18 14:5468.5 °F
Water temperature2026-05-18 15:0068.5 °F
Water temperature2026-05-18 15:0668.5 °F
Water temperature2026-05-18 15:1268.5 °F
Water temperature2026-05-18 15:1868.5 °F
Water temperature2026-05-18 15:2468.5 °F
Water temperature2026-05-18 15:3068.5 °F
Water temperature2026-05-18 15:3668.5 °F
Water temperature2026-05-18 15:4268.5 °F
Water temperature2026-05-18 15:4868.5 °F
Water temperature2026-05-18 15:5468.5 °F
Water temperature2026-05-18 16:0068.7 °F
Water temperature2026-05-18 16:0668.5 °F
Water temperature2026-05-18 16:1268.7 °F
Water temperature2026-05-18 16:1868.7 °F
Water temperature2026-05-18 16:2468.7 °F
Water temperature2026-05-18 16:3068.7 °F
Water temperature2026-05-18 16:3668.7 °F
Water temperature2026-05-18 16:4268.7 °F
Water temperature2026-05-18 16:4868.7 °F
Water temperature2026-05-18 16:5468.7 °F
Water temperature2026-05-18 17:0068.7 °F
Water temperature2026-05-18 17:0668.7 °F
Water temperature2026-05-18 17:1268.7 °F
Water temperature2026-05-18 17:1868.7 °F
Water temperature2026-05-18 17:2468.7 °F
Water temperature2026-05-18 17:3068.7 °F
Water temperature2026-05-18 17:3668.7 °F
Water temperature2026-05-18 17:4268.7 °F
Water temperature2026-05-18 17:4868.7 °F
Water temperature2026-05-18 17:5468.7 °F
Water temperature2026-05-18 18:0068.7 °F
Water temperature2026-05-18 18:0668.7 °F
Water temperature2026-05-18 18:1268.7 °F
Water temperature2026-05-18 18:1868.7 °F
Water temperature2026-05-18 18:2468.7 °F
Water temperature2026-05-18 18:3068.7 °F
Water temperature2026-05-18 18:3668.7 °F
Water temperature2026-05-18 18:4268.7 °F
Water temperature2026-05-18 18:4868.9 °F
Water temperature2026-05-18 18:5468.9 °F
Water temperature2026-05-18 19:0068.9 °F
Water temperature2026-05-18 19:0668.9 °F
Water temperature2026-05-18 19:1268.9 °F
Water temperature2026-05-18 19:1868.9 °F
Water temperature2026-05-18 19:2468.9 °F
Water temperature2026-05-18 19:3068.9 °F
Water temperature2026-05-18 19:3668.9 °F
Water temperature2026-05-18 19:4268.9 °F
Water temperature2026-05-18 19:4868.9 °F
Water temperature2026-05-18 19:5468.9 °F
Water temperature2026-05-18 20:0068.9 °F
Water temperature2026-05-18 20:0668.9 °F
Water temperature2026-05-18 20:1268.9 °F
Water temperature2026-05-18 20:1869.1 °F
Water temperature2026-05-18 20:2469.1 °F
Water temperature2026-05-18 20:3069.1 °F
Water temperature2026-05-18 20:3669.1 °F
Water temperature2026-05-18 20:4269.1 °F
Water temperature2026-05-18 20:4869.1 °F
Water temperature2026-05-18 20:5469.1 °F
Water temperature2026-05-18 21:0069.1 °F
Water temperature2026-05-18 21:0669.1 °F
Water temperature2026-05-18 21:1269.1 °F
Water temperature2026-05-18 21:1869.1 °F
Water temperature2026-05-18 21:2469.1 °F
Water temperature2026-05-18 21:3069.1 °F
Water temperature2026-05-18 21:3669.1 °F
Water temperature2026-05-18 21:4269.1 °F
Water temperature2026-05-18 21:4869.1 °F
Water temperature2026-05-18 21:5469.1 °F
Water temperature2026-05-18 22:0069.1 °F
Water temperature2026-05-18 22:0669.1 °F
Water temperature2026-05-18 22:1269.1 °F
Water temperature2026-05-18 22:1869.3 °F
Water temperature2026-05-18 22:2469.3 °F
Water temperature2026-05-18 22:3069.3 °F
Water temperature2026-05-18 22:3669.3 °F
Water temperature2026-05-18 22:4269.3 °F
Water temperature2026-05-18 22:4869.3 °F
Water temperature2026-05-18 22:5469.3 °F
Water temperature2026-05-18 23:0069.3 °F
Water temperature2026-05-18 23:0669.3 °F
Water temperature2026-05-18 23:1269.3 °F
Water temperature2026-05-18 23:1869.3 °F
Water temperature2026-05-18 23:2469.3 °F
Water temperature2026-05-18 23:3069.3 °F
Water temperature2026-05-18 23:3669.3 °F
Water temperature2026-05-18 23:4269.3 °F
Water temperature2026-05-18 23:4869.3 °F
Water temperature2026-05-18 23:5469.3 °F
River level2026-05-18 00:004.308 ft MLLW
River level2026-05-18 00:064.452 ft MLLW
River level2026-05-18 00:124.61 ft MLLW
River level2026-05-18 00:184.767 ft MLLW
River level2026-05-18 00:244.921 ft MLLW
River level2026-05-18 00:305.082 ft MLLW
River level2026-05-18 00:365.246 ft MLLW
River level2026-05-18 00:425.381 ft MLLW
River level2026-05-18 00:485.525 ft MLLW
River level2026-05-18 00:545.669 ft MLLW
River level2026-05-18 01:005.797 ft MLLW
River level2026-05-18 01:065.928 ft MLLW
River level2026-05-18 01:126.047 ft MLLW
River level2026-05-18 01:186.145 ft MLLW
River level2026-05-18 01:246.253 ft MLLW
River level2026-05-18 01:306.342 ft MLLW
River level2026-05-18 01:366.46 ft MLLW
River level2026-05-18 01:426.549 ft MLLW
River level2026-05-18 01:486.634 ft MLLW
River level2026-05-18 01:546.736 ft MLLW
River level2026-05-18 02:006.837 ft MLLW
River level2026-05-18 02:066.946 ft MLLW
River level2026-05-18 02:127.041 ft MLLW
River level2026-05-18 02:187.152 ft MLLW
River level2026-05-18 02:247.247 ft MLLW
River level2026-05-18 02:307.329 ft MLLW
River level2026-05-18 02:367.395 ft MLLW
River level2026-05-18 02:427.441 ft MLLW
River level2026-05-18 02:487.48 ft MLLW
River level2026-05-18 02:547.503 ft MLLW
River level2026-05-18 03:007.523 ft MLLW
River level2026-05-18 03:067.526 ft MLLW
River level2026-05-18 03:127.523 ft MLLW
River level2026-05-18 03:187.497 ft MLLW
River level2026-05-18 03:247.467 ft MLLW
River level2026-05-18 03:307.415 ft MLLW
River level2026-05-18 03:367.346 ft MLLW
River level2026-05-18 03:427.27 ft MLLW
River level2026-05-18 03:487.195 ft MLLW
River level2026-05-18 03:547.093 ft MLLW
River level2026-05-18 04:006.982 ft MLLW
River level2026-05-18 04:066.87 ft MLLW
River level2026-05-18 04:126.739 ft MLLW
River level2026-05-18 04:186.617 ft MLLW
River level2026-05-18 04:246.496 ft MLLW
River level2026-05-18 04:306.378 ft MLLW
River level2026-05-18 04:366.227 ft MLLW
River level2026-05-18 04:426.089 ft MLLW
River level2026-05-18 04:485.961 ft MLLW
River level2026-05-18 04:545.82 ft MLLW
River level2026-05-18 05:005.696 ft MLLW
River level2026-05-18 05:065.564 ft MLLW
River level2026-05-18 05:125.43 ft MLLW
River level2026-05-18 05:185.299 ft MLLW
River level2026-05-18 05:245.177 ft MLLW
River level2026-05-18 05:305.059 ft MLLW
River level2026-05-18 05:364.934 ft MLLW
River level2026-05-18 05:424.816 ft MLLW
River level2026-05-18 05:484.695 ft MLLW
River level2026-05-18 05:544.577 ft MLLW
River level2026-05-18 06:004.462 ft MLLW
River level2026-05-18 06:064.344 ft MLLW
River level2026-05-18 06:124.226 ft MLLW
River level2026-05-18 06:184.121 ft MLLW
River level2026-05-18 06:244.003 ft MLLW
River level2026-05-18 06:303.894 ft MLLW
River level2026-05-18 06:363.786 ft MLLW
River level2026-05-18 06:423.668 ft MLLW
River level2026-05-18 06:483.56 ft MLLW
River level2026-05-18 06:543.451 ft MLLW
River level2026-05-18 07:003.33 ft MLLW
River level2026-05-18 07:063.218 ft MLLW
River level2026-05-18 07:123.107 ft MLLW
River level2026-05-18 07:182.995 ft MLLW
River level2026-05-18 07:242.887 ft MLLW
River level2026-05-18 07:302.759 ft MLLW
River level2026-05-18 07:362.644 ft MLLW
River level2026-05-18 07:422.52 ft MLLW
River level2026-05-18 07:482.415 ft MLLW
River level2026-05-18 07:542.3 ft MLLW
River level2026-05-18 08:002.188 ft MLLW
River level2026-05-18 08:062.07 ft MLLW
River level2026-05-18 08:121.959 ft MLLW
River level2026-05-18 08:181.837 ft MLLW
River level2026-05-18 08:241.742 ft MLLW
River level2026-05-18 08:301.64 ft MLLW
River level2026-05-18 08:361.499 ft MLLW
River level2026-05-18 08:421.394 ft MLLW
River level2026-05-18 08:481.306 ft MLLW
River level2026-05-18 08:541.184 ft MLLW
River level2026-05-18 09:001.076 ft MLLW
River level2026-05-18 09:060.958 ft MLLW
River level2026-05-18 09:120.856 ft MLLW
River level2026-05-18 09:180.764 ft MLLW
River level2026-05-18 09:240.666 ft MLLW
River level2026-05-18 09:300.568 ft MLLW
River level2026-05-18 09:360.472 ft MLLW
River level2026-05-18 09:420.384 ft MLLW
River level2026-05-18 09:480.279 ft MLLW
River level2026-05-18 09:540.19 ft MLLW
River level2026-05-18 10:000.112 ft MLLW
River level2026-05-18 10:060.033 ft MLLW
River level2026-05-18 10:12-0.049 ft MLLW
River level2026-05-18 10:18-0.121 ft MLLW
River level2026-05-18 10:24-0.194 ft MLLW
River level2026-05-18 10:30-0.253 ft MLLW
River level2026-05-18 10:36-0.305 ft MLLW
River level2026-05-18 10:42-0.331 ft MLLW
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River level2026-05-18 23:482.671 ft MLLW
River level2026-05-18 23:542.877 ft MLLW
Source provenance and cached requests
Horizon distance · 4 in camera height
Geometric horizon0.71 mi
With standard refraction0.76 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: 4 in above water.

Required coefficientk ≈ +3.607
Downward bending needed25.2× standard refraction

This convex-Earth model requires light to bend downward 25.2 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.

Minimum requirement: the shoreline-water ray just clears the bow. The observed greater clearance needs more downward bending; angular equality is not assumed for this exhibit.

Minimum bow clearance: k=1+2R[b−h(1−x/D)]/[x(D−x)]. At this threshold clearance is zero, not the observed positive water band.

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

13 high-quality images ordered by capture date

Videos

4 video clips; poster frames shown where available