E M W I N D E C10,2006

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E M W I N D E C10,2006

  1. 1. DEC.10,2006 DEC.10, 2006 Santos Rodriguez, NWS EMWIN CURRENT EMWIN OVERVIEW
  2. 2. DEC.10,2006 What is EMWIN? <ul><li>The Emergency Managers Weather Information Network is a wireless, priority-driven computer weather data broadcast system that takes advantage of minimal wireless bandwidth. </li></ul><ul><li>EMWIN provides rapid Satellite, VHF Radio, and Internet dissemination of: </li></ul><ul><li>Alerts / Warnings < 1 minutes </li></ul><ul><li>Forecasts ~ 2- 5 minutes </li></ul><ul><li>Graphics ~ 10 – 15 minutes </li></ul><ul><li>Imagery ~ 10 – 15 minutes </li></ul><ul><li>Other (as time permits) </li></ul><ul><li>In severe weather non-warning products may take longer </li></ul>
  3. 3. DEC.10,2006 How it works <ul><li>Data are collected from a variety of sources: </li></ul><ul><li>1. Gateway </li></ul><ul><ul><li>2. Weather Wire </li></ul></ul><ul><ul><li>3. FTP </li></ul></ul><ul><ul><li>4. Internet </li></ul></ul><ul><li>They are assembled at the EMWIN servers and : </li></ul><ul><ul><li>1. Prioritized into high , mid , and low priority products </li></ul></ul><ul><ul><li>2. Split into 1k packets </li></ul></ul><ul><ul><li>3. Assembled into a 9.6kbs serial data stream </li></ul></ul>
  4. 4. DEC.10,2006 How it works cont . <ul><li>The data stream is then sent to Wallops Command and Data Acquisition Station (WCDAS), NESDIS where it is Up linked to satellite (GOES 12 and GOES 11) </li></ul><ul><li>At Pacific Region HQ, it is received from GOES-11 and up linked to PSAT which relays the signal father west </li></ul><ul><li>EMWIN products can be retransmitted by other methods </li></ul><ul><ul><li>Transmitted via radio frequency (local re-broadcast) </li></ul></ul><ul><ul><li>Sent on the Internet (Byte Blaster) </li></ul></ul>
  5. 5. DEC.10,2006 NWS EMWIN Architecture INTERNET CLOUD NWS GATEWAY SYSTEM WEATHERWIRE SYSTEM A & C B & D BYTE BLASTER NETWORK WALLOPS CDAS GOES SPACE CRAFT DEDICATED ANALOG LINE EMWIN FEED SOURCES EMWIN PC NETWORK EMWIN INTERNET PUSH BITSTREAM DEDICATED ANALOG LINE/T1 backup Tertiary System
  6. 6. DEC.10,2006 Psat Asiastar Telstar G-10 G-13
  7. 7. DEC.10,2006 EMWIN Users <ul><li>National Weather Service Forecast Offices and Warning Coordination Meteorologists (WCM’s) </li></ul><ul><li>WCM’s use EMWIN as a tool to promote the NWS to the public and for training Skywarn members, storm spotters and Local and National Emergency managers </li></ul><ul><li>Canadian Met Service, South and Central American countries, Caribbean nations, Pacific Island nations, the NWS Pacific region </li></ul><ul><li>Schools , amateur meteorologists, EMT’s, hobbyists of all ages, storm spotters, storm chasers, Skywarn Network </li></ul>
  8. 8. <ul><li>Many TV Stations in the mid-west, especially tornado alley </li></ul><ul><li>Police Stations, Fire Stations, Emergency Centers, Emergency response personnel </li></ul><ul><li>Re-broadcasters, paging networks </li></ul><ul><li>Worldwide Internet Users via Byte Blaster network </li></ul><ul><li>Weather Channel is known to use EMWIN </li></ul><ul><li>U.S. Air force uses in remote areas </li></ul>EMWIN Users cont. DEC.10,2006
  9. 9. DEC.10,2006 EMWIN in the Pacific <ul><li>Currently PSAT (175w) rebroadcasts an EMWIN data stream </li></ul><ul><li>Provides advance warning of tsunami and typhoons </li></ul><ul><li>We’ve received testimonials noting that after a severe event the only weather system still functioning is EMWIN </li></ul><ul><li>Many island nations already use EMWIN to save lives and property </li></ul><ul><li>Asiastar L band satellite (103 E) began transmitting EMWIN products in summer of 2006 </li></ul>
  10. 10. DEC.10,2006 EMWIN VHF Re-transmission <ul><li>The EMWIN signal is re-transmitted locally using NWS or National Guard VHF frequencies to local communities </li></ul><ul><li>Re-broadcasters can filter the national data stream and re-insert local emergency data or relay it in its’ entirety </li></ul><ul><li>Texas counties use EMWIN in Police cars </li></ul><ul><li>Florida’s network (FWIN) uses heavy filtering and employs 1200 baud as its’ retran data rate, it is a very effective network used statewide by Emergency Managers. </li></ul>
  11. 11. DEC.10,2006 Internet or Intranet cloud Typical VHF Re-transmission System EMWIN SERVER VHF Transmitter Receiver Custom local EMWIN Data stream To Paging Network GOES EAST dish GOES WEST dish 153.950KHz 1690.725MHz 1690.725MHz
  12. 12. DEC.10,2006
  13. 13. DEC.10,2006 Typical Radio Re-broadcast User Standard Pentium PC Internet access to Byte blaster network Internet cloud 0-100 mi from transmitter line of sight EMWIN VHF Radio Receiver 153.950KHz VHF EMWIN Optional Alarm Controller To Alarm Units
  14. 14. DEC.10,2006 Typical Satellite User Internet cloud Standard Pentium PC EMWIN SATELLITE Dish Receiver Internet access to Byte blaster network Optional Alarm Controller To Alarm Units
  15. 15. DEC.10,2006 Byte Blaster Server Internet cloud Standard Pentium PC EMWIN SATELLITE Dish Receiver Internet access to Byte blaster network Optional Alarm Controller To Alarm Units
  16. 16. DEC.10,2006 Why EMWIN works so well <ul><li>The equipment is inexpensive. </li></ul><ul><li>An EMWIN system without the PC costs as little as $1,400 . </li></ul><ul><li>The System needs little to no infrastructure. </li></ul><ul><li>EMWIN runs on a laptop. </li></ul><ul><li>A Solar powered version exists. </li></ul><ul><li>Signal is “Weather Proof” due to L-Band transmission. </li></ul><ul><li>USER Equipment is relatively compact and is very rugged. </li></ul><ul><li>The Data-stream is free, repeatable and can be customized for local retransmission. </li></ul><ul><li>EMWIN is non-proprietary. </li></ul><ul><li>Multiple inexpensive software display packages are available. </li></ul><ul><li>A large and knowledgeable user community to help monitor performance and answer user questions (EMWIN user list). </li></ul>
  17. 17. EMWIN Satellite Constellation DEC.10,2006 ASIASTAR L BAND PSAT LBAND 135 deg. West 75 deg. West 60 deg. West 104.5 deg. West 97 deg. West 103 deg. East 175 deg. West GOES-11(West) GOES-12 (East) GOES-10 (Caribbean/S.A.) GOES-13 (N) TELSTAR5 KU BAND

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