WEBVTT FILE 1 00:00:01.710 --> 00:00:06.100 Lightning is more than nature's fireworks display. 2 00:00:06.120 --> 00:00:11.170 Research has shown that lightning is an excellent early warning indicator 3 00:00:11.190 --> 00:00:12.910 for approaching severe storms. 4 00:00:12.930 --> 00:00:19.230 This data visualization shows actual lightning measurements captured from a remarkable array of ground based lightning detectors 5 00:00:19.250 --> 00:00:23.390 capable of tracing how lightning propagates through the atmosphere. 6 00:00:23.410 --> 00:00:32.270 From space the intersection of lightning and its corresponding cloud fronts becomes clear. 7 00:00:32.290 --> 00:00:35.070 That's why on the nation's new weather satellite called GOES-R 8 00:00:35.090 --> 00:00:45.750 an advanced lightning detector system called GLM 9 00:00:45.770 --> 00:00:50.240 will begin surveying the entire nation for atmospheric flashes. 10 00:00:50.260 --> 00:00:51.210 according to project maagers this technology could provide valuable minutes of critical warning time 11 00:00:51.230 --> 00:00:57.879 in advance of approaching storms.