1. 1 April 13, 2010 NWS EMWIN TEAM EMWIN OVERVIEW

2. 2 What is EMWIN? The Emergency Managers Weather Information Network is a priority-driven computer weather data broadcast system that takes advantage of minimal bandwidth. EMWIN provides rapid Satellite, VHF Radio, and Internet dissemination of: –Alerts / Watches/Warnings < 1 minute –Forecasts –Graphics, Imagery No other NWS dissemination system: –Has comparable level of redundancy –As large satellite footprint –Requires so little infrastructure in a disaster –Makes use of “weather proof ” L-Band

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5. 5 How it works Data is collected from the Gateway, Weather Wire and the InternetData is collected from the Gateway, Weather Wire and the Internet Assembled into a prioritized data streamAssembled into a prioritized data stream Sent to NESDIS, (Wallops CDA) where it is up-linked to GOES 11 and GOES 12Sent to NESDIS, (Wallops CDA) where it is up-linked to GOES 11 and GOES 12 Sent further west via PeaceSat in a cooperative effort between NWS Pacific Region and the Univ. HawaiiSent further west via PeaceSat in a cooperative effort between NWS Pacific Region and the Univ. Hawaii Transmitted via VHF radio (local re-broadcast) in some areasTransmitted via VHF radio (local re-broadcast) in some areas Sent on the Internet via IP unicast (AKA “ByteBlaster”)Sent on the Internet via IP unicast (AKA “ByteBlaster”)

6. 6 EMWIN Dataflow INTERNET CLOUD GOES SPACE CRAFT NOAANET Circuit Primary Wallops Tertiary WWIRE System Silver Spring WWIRE System EMWIN Servers NWS GATEWAY SYSTEM Secondary circuit Internet Push NOAANET EMWIN satellite User WALLOPS CDA

7. 7 Typical EMWIN Satellite User Internet cloud Standard Pentium PC EMWIN SATELLITE Dish Receiver Internet access to Byte blaster network Optional Alarm Controller To Alarm Units

8. 8 EMWIN Footprint EMWIN coverage map at 1 deg. elevation for GOES Satellites

9. 9 EMWIN Satellite Constellation PSAT 175 W GOES-13 N Drifting to 75W GOES-11 (West) 135 W Telstar 5 KU Band 97 W GOES-14 (N) Test Platform 105 W GOES-12 (East) 75 W

10. 10 EMWIN Broadcasts GOES 12 (East)L Band, 1690.725 MHz.DFSK 9.6 kbps GOES 11 (West)L Band, 1690.725 MHz.DFSK 9.6 kbps GOES 13 (N) Offline will be used to replace GOES 12 (East) April 26,2010 L Band, 1692.725 MHz.OQPSK 19.2 kbps GOES 14 (O) For Testing/Development L Band, 1692.725 MHz.OQPSK 19.2 kbps GOES 7 (Peace Sat)L Band, 1690.725 MHz.DFSK 9.6 kbps

11. 11 EMWIN Users Local and National Emergency managers Local and National Emergency managers International Met Services International Met Services Storm Spotters, Schools, meteorologists Storm Spotters, Schools, meteorologists TV Stations Emergency Responders Re-broadcasters using VHF Paging networks Worldwide Internet users via ByteBlaster network Weather Channel is known to use EMWIN

12. 12 EMWIN User Receive System “Screen Shots”

13. 13 EMWIN International Users Pacific Rim Nations –“Peace Sat” relays the EMWIN data stream from Univ. of Hawaii –Provides advance warnings eg. Tsunamis and Typhoons –Testimonials show that after a severe event the only weather system still functioning was EMWIN Canada –Canadian Meteorological Service uses for warnings Caribbean, Central & South American Nations –As of 2007 many Caribbean island nations implemented EMWIN systems for Emergency Management –In Latin America used for hurricane preparedness and flooding, volcanic ash etc.

14. 14 EMWIN VHF Re-transmission The EMWIN signal is also re-transmitted line-of-sight using government VHF frequencies to local communities Re-broadcasters can filter the national data stream and re- insert local emergency data or relay it in its’ entirety Some areas use EMWIN in Police cars Largest rebroadcast network is Florida’s network (FWIN) used statewide by Emergency Managers.

15. 15 EMWIN Assets The EMWIN I signal covers over 3/4’s of the earth’s surface Transponders on GOES East and West for redundancy The user equipment is inexpensive, non-proprietary, compact, rugged and requires little infrastructure The user equipment is inexpensive, non-proprietary, compact, rugged and requires little infrastructure Reliable, 24/7 for over 11 years with almost zero down time Reliable, 24/7 for over 11 years with almost zero down time L-band signal is “Weather Proof” L-band signal is “Weather Proof” Data is free, repeatable and customizable for local transmission. Data is free, repeatable and customizable for local transmission. Multiple inexpensive software display packages are available. Multiple inexpensive software display packages are available. A publicly maintained user list for user support and monitoring A publicly maintained user list for user support and monitoring Text to voice messaging available thru paging networks that allows warning messages to be sent to cell phones, phones and PDA’s anywhere in CONUS, Pacific, or Caribbean Text to voice messaging available thru paging networks that allows warning messages to be sent to cell phones, phones and PDA’s anywhere in CONUS, Pacific, or Caribbean

16. 16 EMWIN I Highlights –Conferences and Workshops AMS Conferences National Hurricane Conference Pacific Region Hurricane Conference Eastern and Southern Region Emergency Managers Conferences –Two Caribbean EMWIN-I training courses given in 2007 NWS International Activities sponsored White House Third Border Initiative Participated in UN SPIDER Conference at Barbados 2008 NWS OCIO taught classes for Caribbean Emergency Managers at Silver Spring and the National Hurricane Center Systems donated to nations attending, with ongoing support

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22. 22 EMWIN-N GOES N thru P constellation changes –All EMWIN-I receivers become obsolete –Power reduction –Dedicated transponder –Frequency shifts –Modulation scheme changes EMWIN Transition plan is posted on : –http://www.weather.gov/emwin/index.htm

23. 23 Transition Details On or about April 26,2010, GOES-13 replaces GOES-12 and begins transmitting the EMWIN-N signal GOES-12 will be turned off and begin to drift East towards 60 degrees West Long. @.50 degrees per day drift rate On May 5,2010, GOES -12 will be turned back on, transmitting the legacy EMWIN bitstream and will remain transmitting the legacy bitstream @ 60 degrees,unless there is a failure. This allows for more transition time for GOES-East Users. In December of 2011 GOES-14 will replace GOES-11 and will begin transmitting the EMWIN-N signal

24. 24 Transition Recommendations Users should find out if they can point to GOES-West and still get a usable signal. If so, re-point. Then re-point to GOES-13 after purchase of GOES-N system. Users that cannot purchase receivers and cannot receive GOES-14, point to GOES-12 during drift or after it reaches 60 degrees. If all fails, use the byteblaster internet broadcast until a receiver can be purchased. Based on test results we have found that complete systems perform better that partial upgrades. Especially true for LNB front end systems.

25. 25 EMWIN N Highlights Speed doubles Forward error correction Allows enhancement of the data stream Coding gains used to retain current user dish sizeCoding gains used to retain current user dish size NESDIS funded state-of-the-art software defined radio receiver backwards-compatible with EMWIN-I Zephyrus is developing another type of EMWIN N receiver and is close to having a prototype receiver. COTS User (Werner Labs) backwards compatible receive system developed and tested using S/W receiver GOES-14 dedicated as test platform for developers until GOES-13 becomes operational

26. 26 EMWIN R GOES R constellation – Combined EMWIN/LRIT transponder Greater user/vendor base – Frequency, modulation, and Power change – Speed increases to 128KBS – Forward error correction – Backwards compatible software defined receiver prototype – Open source code software defined receiver

27. 27 EMWIN R Highlights GOES-R Prototype is now tested and completed Interface documents are formalized for ground and space segments No manufactures as of now, however there are at least two developers looking at design

28. 28 In Conclusion Questions?