Upper Peninsula Skywarn Upper Peninsula Skywarn


About APRS and the CWOP


Click on a station for more information.

Automatic Packet Reporting System (APRS) is a 2-way tactical communications mode using ham radio. It can be used for text messaging, weather station reporting, or to track mobile stations’ positions using GPS. Amateur Radio operators nationwide use APRS for reporting and tracking severe weather conditions. Any station with a home weather station can connect it to his/her APRS station and automatically transmit weather conditions.Radios such as the Kenwood TM-D710A can be used to send text messages to home and mobile stations using APRS. APRS is better than traditional packet becuase it is a hybrid VHF radio and worldwide internet connected system.

All you need is a TNC, a VHF transceiver, and inexpensive weather measuring equipment to get your station up and running! Of course, if you just want to receive the APRS reprots on 144.39 MHz FM from other stations you can do that too… REAL TIME! CWOP station reports are relayed to the National Weather Service over the air via digipeaters and the receive nodes connected to the internet.

Instructions for configuring your own station
APRS TNC settings explained (you shouldn’t be using RELAY or WIDE anymore)
APRS Depot Forum
Weather Watch CWOP/APRS Forum

NOTE: The U.P. is in need of APRS digipeaters! Consider converting your old 145.01/145.09 BBS or packet node to an APRS node on 144.39 MHz using the WIDEn-N format. No matter where you live, It would be additionally helpful (although not absolutely necessary to help us out) if you interfaced your over the air node with your broadband internet connection using UI-View, a free download. This would GREATLY help fill in the multiple holes in the coverage in the U.P. and enable better posting of information to the internet.

We especially need stations near:
Escanaba/Gladstone (coverage gap image)
Nestoria/Michigamme/Republic (coverage gap image),
Munising/Wetmore/Shingleton (coverage gap image),
Scandia/McFarland/Trenary (coverage gap image)
Bruce Crossing/Ewen


Citizen Weather Observer Program (CWOP)
The National Weather Service has over 6,000 automated radio stations submitting weather reports from across the country every hour via the Citizen Weather Observer Program.

Join the CWOP
More CWOP Information
Michigan CWOP Stations reports
Wisconsin CWOP Stations reports
Latest APRS activity map (please wait 15 seconds to load, click on an icon for info. WX=weather every 15 mins.)

 WX Reports in Vicinity of Callsign:  WX Reports Near Zipcode:
KD8GBH-14 WX Graphs (Hancock)
KC9AMX WX Graphs (Marenisco)
KD8ABP-1 WX Graphs (Calumet)
Your weather station could be listed right here too!

UI-View (Software) Help
UI-View is amateur radio’s most universally used APRS and weather watcher program. The program is a free download and has many useful add-ons. You can now download FREE, highly detailed maps using the PA7RHM Map Plug-in.

U.P. Map and INF file (copy to C:Program FilesPeak SystemsUI-View32MAPS)
Western U.P. Map and INF file
Central U.P. Map and INF file
Eastern U.P. Map and INF file

You can also use UI-View to display overlayed weather warning boxes on the maps above. First, you need to download and install the shape files. Then open File–> UI-NWS.

WXSvr Product Codes

Peet Brothers Weather Station
Davis Weather Station
TAPR/AAG Weather Station


NOAA Spotter Training

OnDemand Training

Emergency Coordinators and Local Media


Copyright © 2020 Upper Peninsula Skywarn