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National Weather Service Telecommunication Gateway Legacy Systems Replacement. WMO – ISS September 2002. Increasing Traffic Volumes. NWP Improvements NEXRAD Base Data ORPG/ORDA. NCEP currently produces more than 175 GB/day but is able to send less than 50 to the NWSTG.

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national weather service telecommunication gateway legacy systems replacement

National Weather ServiceTelecommunication GatewayLegacy Systems Replacement

WMO – ISS

September 2002

increasing traffic volumes
Increasing Traffic Volumes
  • NWP Improvements
  • NEXRAD
    • Base Data
    • ORPG/ORDA

NCEP currently produces

more than 175 GB/day but

is able to send less than 50

to the NWSTG

architecture changes
Current Architecture

Mainframes

IBM VM/ESA Operating System

Message Switch Application, custom database

Specialized Front End Processors (Amdahl and Concurrent)

New Architecture

Enterprise Servers

UNIX

COTS Messaging and Queuing middleware, COTS RDBMS, and C Language applications

General purpose servers

Architecture Changes
expected outcomes
Expected Outcomes
  • Meet NWSTG delivery performance requirements
    • 10 second Message Switch transit for Watches and Warnings
    • Accommodate traffic increases, user increases, and protocol changes without major disruptions
      • New technology (MQSeries) handles 90 million messages daily averaging 4 seconds transit in U.S. Customs system
  • Retain current reliability and maintainability of facility and IT systems at 99.9% availability
  • Reduce dependency on unique skills, software, and systems
nwstg data flow highlights
NWSTG Data Flow Highlights
  • Data enters through Communication front ends and is placed on Messaging and Queuing (MQ) middleware for movement to Switch Engine
  • Switch Engine:
    • Uses Switching Directory to determine distribution
    • Places message in Sybase RDBMS
  • MQ Series Integrator (MQSI) and applications:
    • Parse messages and data elements
    • Perform QC
    • Build new messages and bulletins
  • Data is delivered to users through communication links and servers
nws web ftp services
NWS Web & FTP Services

Pacific

Region

Alaska

Eastern

Region

Severe Storm

Center

Central

Region

Western

Region

Headquarter

Aviation Wx

Center

Southern

Region

Hurricane

Center