![](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2024\/11\/241113_goes18_goes16_waterVapor_glmFlashExtentDensity_Canada_bolide.GIF\")
<\/a>Upper-level Water Vapor (6.2 \u00b5m) images with an overlay of GLM Flash Extent Density, from GOES-18 (left) and GOES-16 (right), 1326-1346 UTC on 13th November [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>5-minute PACUS\/CONUS sector Upper-level Water Vapor (6.2 \u00b5m) images with an overlay of GLM<\/strong><\/a>-detected Flash Extent Density<\/strong><\/a> from GOES-18 (GOES-West)<\/em> and GOES-16 (GOES-East)<\/em> (above)<\/strong><\/em> showed the detection of a bolide<\/strong><\/a> — which according to the American Meteor Society<\/strong><\/a> occurred around 1333 UTC on 13th November 2024.<\/p>\n Since the bright fireball occurred at a high altitude (as a meteor was entering the Earth’s upper atmosphere), there was a notable parallax shift<\/strong><\/a> in the GLM-detected signatures (it should be noted that Level 3 GLM gridded products such as Flash Extent Density are not parallax-corrected) — with the apparent location over southwest Alberta as viewed from GOES-18, and over southeast British Columbia as viewed from GOES-16. With both satellites positioned over the Equator, a parallax-induced northward shift in apparent location would also need to be accounted for (GOES-18 parallax correction<\/strong><\/a> | GOES-16 parallax correction<\/strong><\/a>); this would bring the actual bolide location southward, to a point over far northwestern Montana (the blue fireball trajectory arrow pointing southeastward on the AMS map<\/strong><\/a>).<\/a><\/p>\n Satellite viewing angle also had a small effect on the GLM Flash Extent Density magnitude (1336 UTC image<\/strong><\/a>) — with a peak FED value of 6.0 observed by GOES-18, compared to 4.0 observed by GOES-16. Conversely, the peak Total Optical Energy<\/strong><\/a> values were 898.8 fJ observed by GOES-18 compared to 2241.7 fJ observed by GOES-16 (below)<\/strong><\/em>.<\/p>\n