Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS object GRRTORA0A - show graphs
Source callsign: GRRTOR
Comment: TORNADO }a0IaRj#C#ERaR{A00AA
Location: 42°45.00' N 85°44.40' W - locator EN72DS10EA - show map
7.1 km South bearing 191° from Byron Center, Kent County, Michigan, United States [?]
11.5 km Northwest bearing 317° from Wayland, Allegan County, Michigan, United States
24.4 km South bearing 194° from Grand Rapids, Kent County, Michigan, United States
96.7 km West bearing 272° from Lansing, Ingham County, Michigan, United States
Last position: 2025-05-16 03:17:56 UTC (246d 7h39m ago)
2025-05-15 23:17:56 EDT local time at Byron Center, United States [?]
Course: 68°
Speed: 72 km/h
Last path: GRRTOR>APRS via qAO,AE5PL-WX
Positions stored: 1
Others sourced by GRRTOR: GRRTOR10A GRRTOR20A GRRTOR30A GRRTOR40A GRRTOR50A GRRTOR60A GRRTOR70A GRRTOR80A GRRTOR90A GRRTORB0A GRRTORC0A GRRTORD0A GRRTORE0A GRRTORF0A GRRTORG0A GRRTORH0A
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS