![\"GOES-16](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2017\/03\/170310_goes16_visible_TX_gravity_waves_anim.gif\")
<\/a>GOES-16 Visible (0.64 \u00b5m) images, with hourly surface reports [click to play animation]<\/p><\/div>** The GOES-16 data posted on this page are preliminary, non-operational data and are undergoing testing. **<\/em><\/p>\n GOES-16 Visible (0.64 \u00b5m<\/strong><\/a>) images (above;<\/strong> also available as an MP4 animation<\/a>)<\/strong><\/em> showed multiple undular bores over western Texas on 10 March 2017<\/strong><\/a>. The wave packets were perturbing the low-altitude fog and stratus clouds across the region during the morning hours, in advance of a cold front<\/strong><\/a> that was approaching from the north. One bore was moving toward the south, while another (apparently deeper) bore was moving toward the southwest.<\/p>\n A plot of 12 UTC rawinsonde data from Midland (below)<\/strong><\/em> revealed the presence of a strong low-level temperature inversion from the surface to the 850 hPa\u00a0 pressure level — this inversion was acting to duct the gravity waves as they propagated southward and southwestward.<\/p>\n 12 UTC Midland, Texas rawinsonde data plot [click to enlarge]<\/p><\/div>Even though the undular bores were relatively shallow features, a subtle signature of the southwestward-moving bore was seen in Middle-Level Water Vapor (6.9 \u00b5m<\/strong><\/a>) and Lower-Tropospheric (7.3 \u00b5m<\/strong><\/a>) images (be1ow)<\/strong><\/em>.<\/p>\n<\/a>