emwin.gif (7005 bytes)
Emergency Manager's Weather Information Network

 Who Is EMWIN For?

  • Safety directors - Make it part of your safety plan today!
  • Amateur radio operators - Don't go severe weather spotting without it.
  • Emergency response officials - Stay on top of changing conditions.
  • Business - If weather affects your operations, you can benefit from EMWIN.
  • The Media - A great backup to the "weather wire".
  • Teachers - Explore changes in weather with your science class.
  • Weather hobbyists - Plot the daily climate variations for your area.
  • Weather junkies - Let the weather info come to you, instead of you to it.
  • Computer hobbyists - Make your doorbell ring every time a tornado warning is issued.

I need more information, where do I go?

What is EMWIN?
EMWIN is a weather data system that was designed for County Emergency Managers with limited budgets.  Up to 6,500 National Weather Service products are available free of charge to those who need it most. You read correctly, the data is free, no phone lines or internet access is required. Potential users of EMWIN include emergency response officials, schools, hospitals, nursing homes, SKYWARN severe weather spotters, weather hobbyists, and any business where weather is a factor.

What can EMWIN do?
Using a point-and-click interface on a Windows-based PC, users of the free weather data can monitor the latest severe weather watches, warnings and statements for their county (or any county in the U.S. for that matter). The software can provide visual or audio alarms under user-specified situations. The computer software can be programmed to turn on your lights or call your pager to alert you to hazardous weather! 

Where is EMWIN currently available in North Dakota?
Amateur radio operators have setup local EMWIN systems in Bismarck and Grand Forks.   If you have a scanner, tune to 143.150 MHz to hear the signal. No satellite equipment is required.

What Do I Need to Get EMWIN Data on My Computer

  • Live in or near Bismarck or Grand Forks
  • A special demodulator ($50-100, see National EMWIN Homepage)
  • A scanner to receive the signal on 143.150 MHz
  • Pentium based computer with 64 MB of RAM is best, should work on a 486
  • The software is free

What weather products would reach my computer automatically?
The following is a partial list of products available for every state in the country:
    - Tornado watches, warnings and statements.
    - Severe thunderstorm watches, warnings and statements.
    - Flash Flood and Flood watches, warnings and statements.
    - Hurricane watches, warnings and statements.
    - Thunderstorm Outlook for the next 24 hours.
    - River readings and rainfall reports.
    - Five-day forecasts for every county in the U.S.
    - Climate information (high and low temperatures, precipitation, etc.).
    - Weather charts and maps.
    - Hourly aviation surface observations
    - Doppler Radar coded messages

IWIN

The Internet Weather Information Network (IWIN)) is an EMWIN system using the Internet rather than radio waves. During times of emergencies, phone and internet access may be limited or cut off. In this case, it is preferable to receive EMWIN data via radio waves.

IWIN Data Sites

How does EMWIN work?
The National Weather Service transmits weather data via weather satellites (i.e. GOES 8 and GOES 10). This data signal is available free of charge, the trick is getting the signal. Public, private and non-profit organizations in North Dakota are developing a system to obtain this data for a one-time cost of $90 to $150 per computer.  This one-time cost is for a computer interface and software to run on your Windows-based PC. If you are technically inclined, you can build a computer interface for $30 and get free software via the internet.

Who is responsible for getting EMWIN data in my community?
The community itself is responsible for funding an EMWIN system through support from business and organizations. The National Weather Service provides the data signal free of charge from weather satellites, the North Dakota Division of Emergency Management coordinates EMWIN transmitters in the state, and the North Dakota National Guard allows for retransmission of the data signal on one of its frequencies (143.150 MHz).     Technical support can be received from amateur radio operators or from the location where you received you EMWIN software.


  • NOAA National Weather Service
  • Bismarck, ND Weather Forecast Office
  • Box 1016
  • 2301 University Drive, Building 27
  • Bismarck, ND 58502-1016
  • 701-250-4224
  • Page Author: BIS Webmaster
  • Web Master's E-mail: w-bis.webmaster@noaa.gov
  • Page last modified: 1-Nov-2005 8:45 PM UTC
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.