The Radar Base Reflective Time Imagery Service consists of data from Multi-Radar/MULTI-Sensor System (MRMS). It provides weather radar information for all the composite Weather Service Doppler Radars (WSR 88-D). This image service has a four-hour moving time slider window. It has data for the Continental United States, Alaska, The Caribbean, Guam, and Hawaii. This radar base reflectivity image service also has WMS capabilities.

Update Frequency: Every 10 minutes

Link to graphical web page: https://radar.weather.gov/

Link to data download (tif): https://mrms.ncep.noaa.gov/data/

Link to metadata: https://www.weather.gov/gis/IDP-GISRestMetadata

Questions/Concerns about the service, please contact the DISS GIS team.

Time Information:

This service is time-enabled, meaning clients can submit image requests including a time parameter specified in epoch time format (milliseconds since 00:00 January 1, 1970).The time extent of this service includes the past four hours up to the current time updated approximately every ten minutes. All times are specifed in UTC. If time parameters are omitted, the most recent image will be returned. Refer to the ArcGIS REST API Image Service Documentation for more information.

In addition to ArcGIS Server REST access, time-enabled OGC WMS 1.3.0 access is also provided by this service.

In ArcGIS.com a time slider can be turned on by clicking the three dots under "radar_base_reflectivity_time" heading and choosing "Enable Time Animation". Note that the ArcGIS.com default client may initialize with an incorrect time extent in which case the user will need to specify the desired extent interactively. Refer to the ArcGIS Online Help Documentation for more information.