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Texas Severe Thunderstorms; Central Rockies Snow; Fire Weather in the West

Isolated severe thunderstorms capable of producing large to very large hail and severe wind gusts may occur Monday across parts of south-central Texas. Elevated to critical fire weather conditions are forecast across parts of northern California and the Southwest again Monday. Heavy snow is forecast over parts of the central Rockies from Monday afternoon into Tuesday. Read More >

Emergency Managers Weather Information Network

National Program

GOES-R Transition

Weather.gov > Emergency Managers Weather Information Network > GOES-R Transition

Why EMWIN is Transitioning


NESDIS is preparing to replace a GOES-N series satellite with a GOES-R series satellite.

  • GOES-R (GOES 16) launched November 19, 2016 and will be operational in 2017.
  • GOES-R HRIT/EMWIN transponder will replace the GOES-N EMWIN transponder.


NWS is consolidating the management of dissemination services, under a program called the Integrated Dissemination Program (IDP)

  • Objective: sustainable, consolidated enterprise architecture; reduced costs
  • Operations centers located in:
    • ​College Park, MD
    • Boulder, CO

IT Security threats require NOAA to periodically updating controls and procedures to minimize the risk of potential EMWIN operational impacts.

 

Transitioning HRIT/EMWIN from GOES-N to GOES-R (NESDIS-1)


Improved data products for hemispheric re-transmission

  • Faster full disk images: between 15 and 30 minutes
  • Warnings, Watches, Tropical Storm Information
  • Copy of GOES Data Collection System (GOES DCS)

Requires new antenna and receiver hardware

  • Receiver frequency shift to 1694.1 MHz from:
    • EMWIN 1692.7 MHz and LRIT 1691.0
  • BPSK Modulation; EMWIN shift from Offset QPSK
  • Data Rate to a combined 400 Kilobits per Second from: EMWIN: 19.2 Kbps and LRIT : 128 Kbps (combined 147.2)

Documents and updates to be posted on the GOES-R web site:

NOTES: GOES-R: HRIT = High Rate Information Transmission ~ 400 kbps (combined transmission rate)
               GOES-N: LRIT = Low Rate Information Transmission ~ 128 kbps

 

Transition from LRIT and EMWIN to HRIT/EMWIN
(NESDIS-3)

 

  LRIT / EMWIN
On GOES –N Series		 HRIT/EMWIN
On GOES-R Series
Full Disk, NH, SH images 3 Hourly Full Disk; .5 hour
NH/SH; follows GOES
East/West Schedule. RSO issue
 		 Variable but planned 3
Channels of Full Disk every
15 minutes
Modulation LRIT BPSK
EMWIN offset QPSK
 		 BPSK
Receiver Center Frequency LRIT 1691.0 MHz (L-Band)
EMWIN 1692.7 MHz (L-Band)
 		 1694.1 MHz (L-Band)
Data Rate LRIT 128 Kbps
EMWIN 19.2 Kbps
 		 400 Kbps
Antenna Coverage Earth Coverage to 50
 		 Earth Coverage to 50
Imagery Data Sources GOES-N Imager (IR,VIS,WV)
MTSAT Imager
 		 ABI (3 or more bands)
HBI (3 bands hourly-GOES W
EMWIN Products Full Suite of Current Products
 		 Combined w/ LRIT Products
GOES DCS Copy of DCS observations
 		 Copy of observations

 

 

 

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