This layer is a combination of the two following Living Atlas layers:Living Atlas Layer: NWS National Weather Events and AlertsLiving Atlas Layer: U.S. Public SchoolsThis layer is updated from an ArcGIS Notebook from ArcGIS Pro. Below is a copied version of the ArcGIS Notebook hosted in ArcGIS Online.Demo: Automate School Weather Updates

THE GEOINQUIRIES™ COLLECTION FOR GOVERNMENT AND CIVICShttp://www.esri.com/geoinquiriesThe Esri GeoInquiry™ collection for Government and Civics contains 20 free, web-mapping activities that correspond and extend map-based concepts in leading middle school Government and Civics science textbooks. The activities use a standard inquiry-based instructional model, require about 15 minutes for a teacher to deliver, and are device agnostic. The activities harmonize with the C3 Framework. Fifteen activities are Level 1, requiring no login. Five activities are Level 2, requiring a login and use of the analysis tools in ArcGIS Online.All Government and Civics GeoInquiries™ can be found at: http://esriurl.com/govGeoInquiries All GeoInquiries™ can be found at: http://www.esri.com/geoinquiries

Raw 1/10th Degree Wind Force Probability data for all wind speeds.

THE GEOINQUIRIES™ COLLECTION FOR GOVERNMENT AND CIVICShttp://www.esri.com/geoinquiriesThe Esri GeoInquiry™ collection for Government and Civics contains 20 free, web-mapping activities that correspond and extend map-based concepts in leading middle school Government and Civics science textbooks. The activities use a standard inquiry-based instructional model, require about 15 minutes for a teacher to deliver, and are device agnostic. The activities harmonize with the C3 Framework. Fifteen activities are Level 1, requiring no login. Five activities are Level 2, requiring a login and use of the analysis tools in ArcGIS Online.All Government and Civics GeoInquiries™ can be found at: http://esriurl.com/govGeoInquiries All GeoInquiries™ can be found at: http://www.esri.com/geoinquiries

This map features highway-level and street-level data for the world. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Street Map.

Wayback imagery is a digital archive of the World Imagery basemap, enabling users to access more than 100 different versions of World Imagery archived over the past 10 years. Each record in the archive represents a version of World Imagery as it existed on the date it was published.This app offers a dynamic Wayback browsing and discovery experience where previous versions of the World Imagery basemap are presented within the map, along a timeline, and as a list. Versions that resulted in local changes are dynamically presented to the user based on location and scale. Preview changes by hovering over and/or selecting individual layers. When ready, one or more Wayback layers can be added to an export queue and pushed to a new ArcGIS Online web map. Browse, preview, select, and create, it’s all there!For more information on Wayback check out these articles.You can also find every Wayback tile layer in the Wayback imagery group.

THE GEOINQUIRIES™ COLLECTION FOR GOVERNMENT AND CIVICShttp://www.esri.com/geoinquiriesThe Esri GeoInquiry™ collection for Government and Civics contains 20 free, web-mapping activities that correspond and extend map-based concepts in leading middle school Government and Civics science textbooks. The activities use a standard inquiry-based instructional model, require about 15 minutes for a teacher to deliver, and are device agnostic. The activities harmonize with the C3 Framework. Fifteen activities are Level 1, requiring no login. Five activities are Level 2, requiring a login and use of the analysis tools in ArcGIS Online.All Government and Civics GeoInquiries™ can be found at: http://esriurl.com/govGeoInquiries All GeoInquiries™ can be found at: http://www.esri.com/geoinquiries

This map is intended to provide general awareness of severe weather. It is not intended to replace authoritative government websites but rather to provide situational awareness. This map can be used as a template for agencies wanting to add their own custom data. This map contains layers from Esri's Living Atlas of the World including Storm Reports, Short-Term Weather Warnings, Weather Watches and Warnings, and Snowfall Forecast. Click on the title of the layers below for more information about each layer and it's source as well as update frequency. Weather Radar Data courtesy of Baron Weather, for more info click here.This map is provided by the Esri Disaster Response Program. For other severe weather related content and data, please visit the DRP Hub Severe Weather Page.

Observed Position

This map features shaded relief imagery, bathymetry and coastal water features that provide neutral background with political boundaries and placenames for reference purposes. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Hillshade and Terrain with Labels.

Coastal areas placed under tropical cyclone watches or warnings are delimited by specific geographical locations known as "breakpoints" (e.g., a hurricane warning is in effect from breakpoint "A" to breakpoint "B").

This Story Map describes the importance of the ocean and how it makes life on earth possible. This Story Map was compiled using the Cascade Story Map Template - Beta (Released on July 16, 2016).The content in the Story Map comes from Esri's Living Atlas of the World.

The cone represents the probable track of the center of a tropical cyclone, and is formed by enclosing the area swept out by a set of circles along the forecast track (at 12, 24, 36 hours, etc). The size of each circle is set so that two-thirds of historical official forecast errors over a 5-year sample fall within the circle.

Observed Wind Swath for 23, 50, and 64+ knot wind speeds.

This National Geographic style map is designed to be used as a basemap and a reference map. The map has been compiled by Esri and the ArcGIS user community from a variety of best available sources. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Hillshade, National Geographic Style Base, and National Geographic Style.

This map provides a detailed basemap for the world featuring a custom night time street map style. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the World Street Map (Night).

National Shelter System - Open Shelters This map layer displays Open Shelters in the United States from the Federal Emergency Management Agency's (FEMA) ESF6-SS database. Per FEMA, “The ESF6-SS database is synchronized every morning with the American Red Cross shelter database. After this daily refresh, FEMA GIS connects every 20 minutes to the FEMA ESF6-SS database looking for any shelter updates that occur throughout the day in the the FEMA ESF6-SS.” Canyon Del Oro High School Open Shelter Data currency: Current FEMA service (NSS/OpenShelters).Data modification: NoneFor more information: FEMA National Shelter System Fact SheetFor feedback please contact: ArcGIScomNationalMaps@esri.com Federal Emergency Management Agency Per FEMA, "We leverage a tremendous capacity to coordinate within the federal government to make sure America is equipped to prepare for and respond to disasters."

Important Note: This item is in mature support. There are new versions of basemaps available for your use. Esri recommends updating your maps and apps to use the appropriate new version. This map features the National Geographic World Map, which is a cartographically rich and distinctive reference map of the world. The map is intended to support the ArcGIS Online basemap gallery. For more details on the map, please visit the National Geographic World Map map service description.

National Inventory of DamsThis feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Army Corps of Engineers (USACE), displays dams within the United States, Puerto Rico and Guam. Per the USACE, "The National Inventory of Dams (NID) consists of dams meeting at least one of the following criteria:Dams where downstream flooding would likely result in loss of human life (high hazard potential).Dams where downstream flooding would likely result in disruption of access to critical facilities, damage to public and private facilities, and require difficult mitigation efforts (significant hazard potential).Dams that meet minimum height and reservoir size requirements, even though they do not pose the same level of life or economic risk as those above – these dams are typically equal to or exceed 25 feet in height and exceed 15 acre-feet in storage, or equal to or exceeding 50 acre-feet storage and exceeding 6 feet in height.The NID does not yet contain all dams in the U.S. that meet these criteria. Continued, routine updates to the NID and enhanced data collection efforts, focused on the most reliable data sources (primarily the many federal and state government dam regulatory programs), will help capture these dams and result in a more robust dataset over time."Hoover, Davis & Glen Canyon DamsData currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (Dams) and will support mapping, analysis, data exports and OGC API – Feature access.NGDAID: 160 (National Inventory of Dams)OGC API Features Link: (National Inventory of Dams - OGC Features) copy this link to embed it in OGC Compliant viewersFor more information, please visit: National Inventory of DamsSupport Documentation: Reference DocumentsFor feedback please contact: Esri_US_Federal_Data@esri.comThumbnail courtesy of: Esri Basemaps ImageryNGDA Data SetThis data set is part of the NGDA Water - Inland Theme Community. Per the Federal Geospatial Data Committee (FGDC), Water - Inland is defined as the "interior hydrologic features and characteristics, including classification, measurements, location, and extent. Includes aquifers, watersheds, wetlands, navigation, water quality, water quantity, and groundwater information."For other NGDA Content: Esri Federal Datasets

See full Data Guide here. Federal Open Space is a polygon feature-based layer that includes land owned in either easement or fee simple interest by the federal government. This layer is based on information that was collected and mapped at various scales and at different levels of accuracy. Types of property in this layer include open space and recreational land open to the public. Examples include National Park Service land, Army Corps of Engineers land, etc.This layer has not been updated since 2004 and may not be accurate.