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Severe Thunderstorms Will Continue to Impact the Southeast Overnight

Strong to severe thunderstorms will continue this evening from eastern Texas into the lower Mississippi and Tennessee Valleys/southern Appalachians. The strongest storms could produce a few strong tornadoes (EF2+), damaging wind gusts, large hail, and locally heavy to excessive rainfall which may results in flash and urban flooding. Read More >

Emergency Managers Weather Information Network

National Program

GOES-R Transition

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

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 website:

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
EMWIN RSS Feed  EMWIN RSS Feed