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Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. 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