NOAA Weather Wire Service (NWWS)

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



June 21, 2018



FCC Extends freeze and receiver registration 90-days; deadline now October 17, 2018.



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.     * Document must be downloaded to view

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.

FCC Registration
  • Enter e-mail for Username
  • Create Password
  • Receive verification e-mail
  • “Go to CORES”
  • Select “entity” or “Individual”
  • Answer question on contact address.
  • Continue
  • Fill out FRN Registration form
  • Submit
  • Do not hit continue - the page has your FCC Registration Number (FRN); print
  • Hit continue
  • Go to (Government entities should e-mail FRN to

  • Note: is available for assistance - also 202-418-4120 M-F 8a-6p
  • “How To Apply” brief

Mission Statement

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

NWWS (both Internet Open Interface and SBN/NOAAPORT Channel 201 in concert) provides the highest product availability to the public.


NWWS is capable for use by radio and television broadcasters to activate the local Emergency Alert System (EAS).


The National Weather Service(NWS) Enterprise NOAA Weather Wire Service (NWWS) developed in 2014 consists of several NWS Enterprise systems (AWIPS, NCF, NCO/IDP, NIDS and SBN/NOAAPORT). See NWWS Poster


Since 1999, NWWS has remained the fastest method for local NWS Weather Forecast Offices to disseminate (and the public to receive) weather information, alerts, and warnings. From 1999-2015 NWWS was a Government leased service. The Enterprise NWWS was declared operational July 1, 2015.

NWWS provides text formatted messages via both satellite (SBN/NOAAPORT Channel 201) and the Internet (Open Interface) product streams. Receiving both product streams allows the recipient to achieve a 98% product availability.

SBN/NOAAPORT Channel 201 (PID201) are NWWS - only alerts, warnings and weather information in WMO Standard message format

NWWS-Open Interface (NWWS-OI) are NWWS-only alerts, warnings and weather information in XML/XMPP format and require the following for access;


  1. XMPP Chatroom interface/XMPP Reader (Java, Pidgin, etc.)
  2. NWS issued user_ID , and
  3. NWS issued password.
  4. XMPP program to pull the message details (Stanzas). This could be as basic as requesting the NWS End User Client (EUC) which can de-duplicate /filter the messages received if both product streams are used in concert.

NWWS can be used by radio and TV broadcasters to activate local Emergency Alert Systems (EAS).


To receive SBN/NOAAPORT Channel 201 requires:
  1. Satellite dish larger than 1.2m (minimum) for better reception (4.2m would offer the best 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. Configure for SBN/NOAAPORT Channel 201 (NWWS products only) using CONFIGURATION sheet

To receive NWWS-Open Interface (OI) over the Internet requires:
  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 (see OI Request )
  5. XMPP Reader (i.e., Java, Pidgin, other XMPP application, etc) or NWWS-EUC (see EUC Request )

Note: Additional programming is required with any XMPP reader in order to access the message details contained in the "stanzas" provided with each visible message header.


Open Interface(OI) supplemental 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"

For XMPP program developers: 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 using resources far in excess of what most would consider reasonable.

Recommended format for the user agent string:


Recommended format for the user agent string:


This will both uniquely identify your application and allow NWS to contact 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.

Once an EUC request is sent, a URL is immediately opened in the same screen with the EUC for download.

A follow-up e-mail will also provide the EUC URL if the screen is mistakenly closed.

To request the EUC click here

Product Dissemination

Methods for Receiving NWS Alerts and Warnings
  Method Media Product Types Used to Activate
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

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 Provides additional local alert awareness/notification. 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.