NOAA Weather Wire Service (NWWS)

Service Status As Of
NWWS Satellite    
NWWS Open Interface (OI)    



June 6, 2018


The FCC is requesting registration of satellite receive sites that operate within the frequency range 3.7GHz- 4.2 GHz (SBN/NOAAPORT, NWWS, and GeoNetCast). Please read the above Public Information Notice. URLs are provided below. Registration (if needed) is due by July 18, 2018.

2) FCC Q&A.
If you need assistance concerning NWWS, send an e-mail to
If you would like to report an NWWS issue, send an email to
If you would like to receive NWWS event notifications, send an email to the Help e-mail above.

January 16, 2018

The NWWS satellite service fully-transitioned to the Galaxy 28 on January 16th (per SCN 17-111), please point your satellite dishes accordingly.


Public comment and information meetings concerning the NWWS may be held from time to time. The meeting information will be posted here at least two-weeks prior to the scheduled meeting date.

NEXT MEETING: TBD No User/Partner meeting scheduled at this time.

  • If you need assistance concerning NWWS, send an e-mail to
  • If you would like to report an NWWS issue, send an email to
  • If you would like to receive NWWS event notifications, send an email to the Help e-mail above.

Mission Statement

The NWS provides weather, water, and climate data, forecasts and warnings for the protection of life and property and enhancement of the national economy.

The mission of the NWS Dissemination Systems is to disseminate weather information, alerts, and warnings to NWS partners, federal, state, local emergency managers, and the public as quickly as possible. The NWS Enterprise NWWS was designed to meet this mission.

NWWS is used to activate the local Emergency Alert System (EAS).


The NWS Enterprise NWWS is the fastest method to disseminate and receive weather information, alerts, and warnings from the National Weather Service.

NWWS provides text products via both satellite and the Internet product streams;

  • NWS Satellite Broadcast Network (SBN)/NOAAPORT Channel 201 (PID201). Text messages are in WMO Standard message format

  • NWWS-Open Interface (NWWS-OI). XML/XMPP chatroom that requires an XMPP reader, in addition to a NWS issued user_ID and password for access.

NOTE 1: For those users with a satellite dish larger than 4 meters, all NWS products are available unfiltered via SBN/NOAAPORT Channels 101-105.

NOTE 2: Similar to NOAA Weather Radio All Hazards (NWR), the NWWS satellite and Open Interface (NWWS-OI) product streams can be used to activate the local Emergency Alert System (EAS).


Satellite for PID201:
  1. Satellite dish larger than 1.2m for better reception
  2. Low Noise Band (LNB) down converter (similar or better than Norsat 3220)
  3. DVB-S2 satellite receiver (similar or better than Novra S300)
  4. Windows-based PC with minimum 20GB storage and 3GB RAM
  5. Ingest SBN/NOAAPORT Channel 201 (NWWS products only)

Note: With 4.2m dish or larger ingest SBN/NOAAPORT Channel 101-105 (all NWS products). A product filter will be required.

Internet for NWWS-OI:
  1. PC (Windows-7 or higher)
  2. 20 Gigabytes of memory for up to 60-day storage of all products
  3. 2 Gigahertz of greater multi-core processor
  4. NWS issued User_ID and password
  5. XMPP Reader (i.e., Java, Pidgin, other XMPP application, etc) or NWWS-EUC

Note: Additional programming is needed with the XMPP reader in order to access the message details contained in the "stanzas."


Open Interface information:

  1. User_id and Password are case sensitive (and cannot be used on multiple machines).
    To request click here.
  2. System and Network Firewall(s) may need adjustment.
  3. Port assignment is "5223".
  4. Router should be checked for proper configuration.
  5. Protocol: XMPP
  6. Address:
  7. Group: chatroom "nwws"
  8. NWS has implemented some security measures. Now applications accessing resources on need to provide a User-Agent header in any HTTP request. Requests without a user agent are automatically blocked. This policy is due to a small number of clients utilizing resources far in excess of what most would consider reasonable.

Recommended format for the user agent string:


This will both uniquely identify your application and allow us to contact you and work with you if we observe abnormal application behavior that may result in a block.


End User Client (EUC):

  1. Compatible only with the Windows 7 Operating System.
  2. Requires a minimum of 20 GB of disk space.
  3. Requires a minimum of 3 GB of memory.
  4. Requires a minimum 2 GHz of multi-core processing.
  5. Once requested a screen will immediately open with the EUC URL at the top for your access.

To request the EUC click here

Product Dissemination

Methods for Receiving NWS Alerts and Warnings
  Method Media Products Activates
1 NWWS - SBN PID201 Satellite Filtered NWWS Products only Yes
2 NWWS - Open Interface (OI) Internet Filtered NWWS Products only Yes
3 NOAA Weather Radio (NWR) Radio Local Weather Forecast Office (WFO) Products Yes
4 SBN/NOAAPORT PID 101-105 Satellite All NWS Products; includes NWS alerts and warnings (unfiltered) Yes
5 Emergency Manager's Weather
   Information Network (EMWIN)
Satellite NWS Products & Imagery; includes NWS alerts and warnings No
6 Wireless Emergency Alerts (WEA) Mobile Phone Alerts & Warnings only No
7 Interactive NWS (iNWS) - NOTE 1
Mobile Phone SMS Text alerts No
8 Internet All NWS Products No
9 Internet Alerts & Warnings only No
10 NWS-Chat - NOTE 1
Internet All NWS Products No
11 NWS Anonymous FTP


All NWS products including alerts and warnings

12 The International Justice and Public
   Safety Network (Nlets) -
Internet State specific products No
13 FEMA Integrated Public Alerts and
   Warning System (IPAWS) - NOTE 1
Internet Alerts and Warning in CAP v1.2 format Yes
14 Various Weather applications
   (variable cost; FREE to $$$$)
Internet/ Mobile Phone Alerts and Warnings No
15 County or Local Emergency Management Telephone alert, pager activation, e-mail or Text Message Local Alerts and Warnings No
16 RCA AlertGuard 27” Television (2003)


All local NWR broadcasts, alerts and warnings (Spanish and English text , tone, chime , interrupt and channel change capable)


NOTE 1 - this method has restricted access. Please review the appropriate web page for additional details.