Wednesday, April 20, 2016

EMWIN Satellite Broadcast Outage

The NWS announced a 3 to 12 hour scheduled EMWIN Broadcast outage to occur on May 11, 2016 starting at 08:00 EDT.  The impact should be limited to GOES East.

Check the EMWIN Webpage http://www.nws.noaa.gov/emwin/ for more information.

EMWIN Service Transition - Internet Feed to be Discontinued

I attended the EMWIN Service Transition meeting yesterday.  The meeting discussed the transition to GOES R in 2017.  GOES R combines EMWIN and LRIT into one signal called HRIT/EMWIN. 

They announced that satellite users would need a new receiver.  I have not discussed this with the current EMWIN satellite vendors to see what they are planning.  At this point, it is clear that users of GOES R will need to plan on some sort of upgrade.  It is unknown at this time whether GOES R will replace GOES West or GOES East.

The disappointing news is the loss of the EMWIN Internet feed.  The EMWIN Internet feed is scheduled to be terminated at the end of December 2016.  All EMWIN Internet users will need to migrate to Weather Wire to continue to receive NWS products over the Internet.

As discussed on the conference call, the EMWIN Internet feed contains some international products along with graphics.  These are not transmitted over Weather Wire.  There are technical reasons that they cannot be transmitted using the Weather Wire XMPP protocol.

They announced that the EMWIN FTP service will return to anonymous access in December 2016.  Presently users have to request a user name and password, and supply the NWS with their IP address.

I am sorry to see the loss of the EMWIN Internet feed.  It has served the EMWIN community well for a long period of time.

I will post more information after the next transition meeting.

Wednesday, April 06, 2016

EMWIN Services Transition - 2016/2017 Webinar

The following data management message was posted today.

GOES-R, the next generation of NESDIS GOES satellites, is scheduled for launch in October 2016 and should become operational in by October 2017.  EMWIN data, NESDIS imagery and goes data collection system /DCS/ data will be transmitted together over the GOES-R HRIT/EMWIN transponder at 400kbps.  The increased bandwidth is expected to improve the throughput of the EMWIN data stream. The new service will require new receiver hardware as there will be a
receiver frequency shift to 1694.1 MHz, from 1692.7 MHz /EMWIN/ and 1691.0 /LRIT/ and a change in modulation for EMWIN users. A new antenna or antenna components may also be required.

The EMWIN data will be broadcast as complete files over the HRIT/EMWIN channel, which is a departure from the present EMWIN packet streaming format. The EMWIN file names will also change from the existing 12 character format, to a more lengthy WMO compliant format.  The EMWIN eight character files names currently in use will be included in the new file names, to assist current users with product identification.

The decision to place the GOES-R satellite at the east /75-degrees w/ or west /137-degrees w/ location has not yet been made.  A date for the decision has not been announced.

The NWS will be hosting and online webinar at 1400 EDT/ 1800 UTC, on April 14, 2016, to identify and review the upcoming changes to ENWUB services.  General registration for the webinar is available on the following links:



Contact Robert Gillespie nws.Emwin.Support@noaa.Gov for further information. Information presented during the webinar will be made available online for reference and review.