WEBVTT Kind: captions Language: en 00:00:00.030 --> 00:00:05.250 In the aftermath of a significant hurricane or other natural disaster, NOAA 00:00:05.250 --> 00:00:09.780 may be tasked to collect aerial imagery. This imagery is typically used to view 00:00:09.780 --> 00:00:15.210 damage to coastal areas. For example, here is Mexico Beach in Florida shown before 00:00:15.210 --> 00:00:21.960 and after Hurricane Michael in 2018. Images are available to view in a web 00:00:21.960 --> 00:00:27.300 browser using the National Geodetic Survey's aerial imagery viewer. Let's take 00:00:27.300 --> 00:00:31.470 a look at how to use this free online tool. We'll begin by going to the 00:00:31.470 --> 00:00:35.850 Emergency Response imagery homepage. Here, you'll see a list of all events that 00:00:35.850 --> 00:00:40.649 have associated aerial imagery. Begin by selecting an event. We're going to use 00:00:40.649 --> 00:00:47.550 2018's Hurricane Michael as an example. On the top row of the map, you'll 00:00:47.550 --> 00:00:56.219 find three options: about, download, and contact. The 'about' button provides 00:00:56.219 --> 00:01:00.809 general information and metadata. Here, you can also find a link to a web 00:01:00.809 --> 00:01:04.170 service that can be used to display the imagery in geographic information 00:01:04.170 --> 00:01:12.810 systems or GIS. The 'download' button allows you to download zipped files of 00:01:12.810 --> 00:01:17.670 images that are sorted by the day of collection. Select the TIFF option if you 00:01:17.670 --> 00:01:21.930 want the imagery that is displayed in the viewer. And lastly, there's a button 00:01:21.930 --> 00:01:26.310 that allows you to contact NOAA if you have questions. Now let's move on to the 00:01:26.310 --> 00:01:32.400 main map area. In the top left corner of the map, you'll find a zoom toggle. Tap or 00:01:32.400 --> 00:01:35.790 click on the appropriate + or - symbol to control the zoom level of the 00:01:35.790 --> 00:01:40.200 map. Change the location by dragging with your mouse or using your fingers on 00:01:40.200 --> 00:01:44.659 a mobile device. Underneath the zoom controls, you'll find a magnifying glass. 00:01:44.659 --> 00:01:48.990 Select it to open a search window, where you can enter an address. This will 00:01:48.990 --> 00:01:53.670 quickly allow you to zoom to your area of interest. Here, we search for Mexico 00:01:53.670 --> 00:01:58.159 Beach, Florida. On the top right corner of the map 00:01:58.159 --> 00:02:02.539 viewer, you'll see an icon with three stacked rectangles. Select to view 00:02:02.539 --> 00:02:06.740 available map layers: base maps -- Street View and Satellite View -- are on top, 00:02:06.740 --> 00:02:12.140 followed by a list of all available imagery from NOAA. Now here's an example 00:02:12.140 --> 00:02:16.280 of viewing before-and-after imagery. Always start with the street view, as 00:02:16.280 --> 00:02:20.060 shown here. This makes it much easier to determine if you're looking at satellite 00:02:20.060 --> 00:02:24.709 imagery or collected NOAA imagery. I'm going to zoom in to Mexico Beach Florida. 00:02:24.709 --> 00:02:30.920 Here, you can see imagery collected by NOAA on October 11th 2018. Behind 00:02:30.920 --> 00:02:35.000 this layer you can see the street view. In this case, the light blue shows the Gulf 00:02:35.000 --> 00:02:40.970 of Mexico where no imagery was collected by NOAA. Now go back to the data layers 00:02:40.970 --> 00:02:45.140 in the upper right to deselect, or hide, the NOAA imagery collected on this date. 00:02:45.140 --> 00:02:49.819 I've also selected the satellite view instead of the street view. This shows 00:02:49.819 --> 00:02:53.930 what the area looked like prior to the hurricane. Now by re-selecting the NOAA 00:02:53.930 --> 00:03:01.430 imagery layer, I can view the area before and after the hurricane. Finally, we're 00:03:01.430 --> 00:03:05.480 going to take a look at the web browser link for this page. It's the link used to 00:03:05.480 --> 00:03:10.160 access the map. You can create a custom URL for the imagery viewer by entering a 00:03:10.160 --> 00:03:14.150 known latitude and longitude in decimal degrees, along with a select zoom 00:03:14.150 --> 00:03:19.160 level. Or simply zoom in to a location with your finger or mouse and copy out 00:03:19.160 --> 00:03:24.940 the link. This link will get you back to the same spot on the map at a later time. 00:03:25.359 --> 00:03:32.299 Visit storms.ngs.noaa.gov to view the full collection of storm imagery from 00:03:32.299 --> 00:03:36.340 NOAA's National Geodetic Survey.