E M W I N D E C10,2006

DEC.10,2006 1

DEC.10, 2006

Santos Rodriguez, NWS EMWIN

CURRENT EMWIN OVERVIEW

DEC.10,2006 2

What is EMWIN?

• The Emergency Managers Weather Information Network is a wireless, priority-driven computer weather data broadcast system that takes advantage of minimal wireless bandwidth.

• EMWIN provides rapid Satellite, VHF Radio, and Internet dissemination of:

• Alerts / Warnings < 1 minutes

• Forecasts ~ 2- 5 minutes

• Graphics ~ 10 – 15 minutes

• Imagery ~ 10 – 15 minutes

• Other (as time permits)

• In severe weather non-warning products may take longer

DEC.10,2006 3

How it worksHow it works

• Data are collected from a variety of sources:Data are collected from a variety of sources:

1. Gateway1. Gateway 2. Weather Wire 2. Weather Wire 3. FTP3. FTP 4. Internet4. Internet

• They are assembled at the EMWIN servers and :They are assembled at the EMWIN servers and :

1. Prioritized into high , mid , and low priority 1. Prioritized into high , mid , and low priority products products

2. Split into 1k packets2. Split into 1k packets 3. Assembled into a 9.6kbs serial data stream3. Assembled into a 9.6kbs serial data stream

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How it works contHow it works cont..

• The data stream is then sent to Wallops Command and Data The data stream is then sent to Wallops Command and Data Acquisition Station (WCDAS), NESDIS where it is Up Acquisition Station (WCDAS), NESDIS where it is Up linked to satellite (GOES 12 and GOES 11)linked to satellite (GOES 12 and GOES 11)

• At Pacific Region HQ, it is received from GOES-11 and up At Pacific Region HQ, it is received from GOES-11 and up linked to PSAT which relays the signal father westlinked to PSAT which relays the signal father west

• EMWIN products can be retransmitted by other methodsEMWIN products can be retransmitted by other methods• Transmitted via radio frequency (local re-broadcast)Transmitted via radio frequency (local re-broadcast)• Sent on the Internet (Byte Blaster)Sent on the Internet (Byte Blaster)

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NWS EMWIN Architecture

INTERNET CLOUD

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

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PsatAsiastar TelstarG-10

G-13

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EMWIN Users

• National Weather Service Forecast Offices and National Weather Service Forecast Offices and Warning Coordination Meteorologists Warning Coordination Meteorologists (WCM’s) (WCM’s)

• WCM’s use EMWIN as a tool to promote the NWS WCM’s use EMWIN as a tool to promote the NWS to the public and for training Skywarn members, to the public and for training Skywarn members, storm spotters and Local and National Emergency storm spotters and Local and National Emergency managersmanagers

• Canadian Met Service, South and Central Canadian Met Service, South and Central American countries, Caribbean nations, Pacific American countries, Caribbean nations, Pacific Island nations, the NWS Pacific regionIsland nations, the NWS Pacific region

• Schools , amateur meteorologists, EMT’s, Schools , amateur meteorologists, EMT’s, hobbyists of all ages, storm spotters, storm chasers, hobbyists of all ages, storm spotters, storm chasers, Skywarn NetworkSkywarn Network

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• Many TV Stations in the mid-west, especially tornado alleyMany TV Stations in the mid-west, especially tornado alley

• Police Stations, Fire Stations, Emergency Centers, Emergency Police Stations, Fire Stations, Emergency Centers, Emergency response personnelresponse personnel

• Re-broadcasters, paging networksRe-broadcasters, paging networks

• Worldwide Internet Users via Byte Blaster networkWorldwide Internet Users via Byte Blaster network

• Weather Channel is known to use EMWINWeather Channel is known to use EMWIN

• U.S. Air force uses in remote areas U.S. Air force uses in remote areas

EMWIN Users cont.

DEC.10,2006 9

EMWIN in the Pacific

• Currently PSAT (175w) rebroadcasts an EMWIN data stream

• Provides advance warning of tsunami and typhoons

• We’ve received testimonials noting that after a severe event the only weather system still functioning is EMWIN

• Many island nations already use EMWIN to save lives and property

• Asiastar L band satellite (103 E) began transmitting EMWIN products in summer of 2006

DEC.10,2006 10

EMWIN VHF Re-transmission

• The EMWIN signal is re-transmitted locally using NWS or National Guard 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

• Texas counties use EMWIN in Police cars

• 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.

DEC.10,2006 11

Internet or Intranet cloud

Internet or Intranet cloud

Typical VHF Re-transmission System

EMWIN SERVERVHF Transmitter

Receiver

Custom local EMWIN Data stream

To Paging Network

GOES EAST dishGOES WEST dish

153.950KHz

1690.725MHz1690.725MHz

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DEC.10,2006 13

Typical Radio Re-broadcast User

Standard Pentium PC

Internet access to Byte blaster network

Internet cloud

Internet cloud

0-100 mi from transmitter line of sight

EMWIN VHF Radio Receiver

153.950KHz VHF EMWIN

Optional Alarm Controller

To Alarm Units

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Typical Satellite User

Internet cloud

Internet cloud

Standard Pentium PC

EMWIN SATELLITE Dish

Receiver

Internet access to Byte blaster network

Optional Alarm Controller

To Alarm Units

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Byte Blaster Server

Internet cloud

Internet cloud

Standard Pentium PC

EMWIN SATELLITE Dish

Receiver

Internet access to Byte blaster network

Optional Alarm Controller

To Alarm Units

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Why EMWIN works so well

• The equipment is inexpensive.The equipment is inexpensive.• An EMWIN system without the PC costs as little as $1,400 .An EMWIN system without the PC costs as little as $1,400 .• The System needs little to no infrastructure.The System needs little to no infrastructure.• EMWIN runs on a laptop.EMWIN runs on a laptop.• A Solar powered version exists.A Solar powered version exists.• Signal is “Weather Proof” due to L-Band transmission.Signal is “Weather Proof” due to L-Band transmission.• USER Equipment is relatively compact and is very rugged.USER Equipment is relatively compact and is very rugged.• The Data-stream is free, repeatable and can be customized for The Data-stream is free, repeatable and can be customized for local retransmission.local retransmission.• EMWIN is non-proprietary.EMWIN is non-proprietary.• Multiple inexpensive software display packages are available.Multiple inexpensive software display packages are available.• A large and knowledgeable user community to help monitor A large and knowledgeable user community to help monitor performance and answer user questions (EMWIN user list).performance and answer user questions (EMWIN user list).

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EMWIN Satellite Constellation

ASIASTAR L BAND

PSAT LBAND

135 deg. West 75 deg. West 60 deg. West104.5 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