Installation (NPM)

npm install @atmosx/event-product-parser@latest

Example Usage

const { AlertManager } = require('@atmosx/product-parser'); // CJS
import { AlertManager } from '@atmosx/product-parser'; // ESM

const parser = new AlertManager({
    database: `shapefiles.db`,
    is_wire: true,
    journal: true,
    noaa_weather_wire_service_settings: {
        reconnection_settings: {
            enabled: true,
            interval: 60,
        },
        credentials: {
            username: `username_here`,
            password: `password_here`,
            nickname: "AtmosphericX Parser",
        },   
        cache: {
            enabled: false,
            max_db_history: 5000,
            max_db_cache_size: 1000,
        },
        preferences: {
            disable_ugc: false,
            disable_vtec: false,
            disable_text: false,
            cap_only: false,
        }
    },
    national_weather_service_settings: {
        interval: 15,
        endpoint: `https://api.weather.gov/alerts/active`,
    },
    global_settings: {
        parent_events_only: true,
        better_event_parsing: true,
        shapefile_coordinates: false,
        shapefile_skip: 10,
        filtering: {
            events: [`Severe Thunderstorm Warning`],
            filtered_icao: [`KLOT`],
            ignored_icao: [],
            ignored_events: [`Xx`, `Test Message`],
            ugc_filter: [],
            state_filter: [],
            check_expired: true,
            ignore_test_products: true,
        },
        eas_settings: {
            directory: null,
            intro_wav: null,
        }
    },
})

NOAA Weather Wire Service (Getting Started)

To use the NOAA Weather Wire Service (NWWS). You would need to obtain credentials from the National Weather Service. Follow these steps:

1. Visit the NOAA NWWS Registration Page.
2. Fill out the registration form with the required information.
3. Submit the form and wait for approval. You will receive your NWWS credentials via email.

Events and Listeners

All events are in GeoJSON.

Event onEvents

Triggered when a batch of new alerts are received and processed.

parser.on(`onEvents`, (alerts) => {
    console.log(`Received ${alerts.length} new alerts.`);
    alerts.forEach(alert => {
        console.log(`${alert.properties.event} for ${alert.properties.locations}`);
    });
});

Alternatively, you can listen for single alert events using onSevereThunderstormWarning or onTornadoWarning, etc.

parser.on(`onTornadoWarning`, (alert) => {
    console.log(`Tornado Warning issued for ${alert.properties.locations}`);
});

Event onReconnection

Triggered when the parser attempts to reconnect to the NWWS service.

parser.on(`onReconnection`, (data) => {
    console.log(`Reconnection attempt #${data.reconnects}`);
});

Event onConnection

Triggered when the parser successfully connects to the NWWS service.

parser.on(`onConnection`, (nickname) => {
    console.log(`Connected to NWWS service as ${nickname}`);
});

Event onOccupant

Triggered when a new occupant is detected on the NWWS XMPP service.

parser.on(`onOccupant`, (data) => {
    console.log(`New occupant detected: ${data.occupant}`);
});

Event onMessage

Triggered when a stanza message is validated and received from the XMPP client.

parser.on(`onMessage`, (data) => {
    console.log(`Message received from ${data.from}: ${data.message}`);
});

Event onTest

Triggered when a test message comes in. Ex: Test Tsunami Warning

parser.on(`onTest`, (alert) => {
    console.log(`Test alert received for ${alert.properties.locations}`);
});

Event onExpired

Triggered when an alert expires.

parser.on(`onExpired`, (alert) => {
    console.log(`Alert expired for ${alert.properties.event} for locations of ${alert.properties.locations}`);
});

Event onFilteredEvent / onIgnoredEvent

Triggered when an alert is filtered out.

parser.on(`onFilteredEvent`, (alert) => {
    console.log(`Alert filtered for ${alert.properties.event}`);
});
parser.on(`onIgnoredEvent`, (alert) => {
    console.log(`Alert ignored for ${alert.properties.event}`);
});

Event onFilteredICAO / (onIgnoredICAO)

Triggered when an alert is filtered out based on its ICAO code.

parser.on(`onFilteredICAO`, (alert) => {
    console.log(`Alert filtered for ${alert.properties.event}`);
});
parser.on(`onIgnoredICAO`, (alert) => {
    console.log(`Alert ignored for ${alert.properties.event}`);
});

Event onFilteredUGC

Triggered when an alert is filtered out based on its UGC zone.

parser.on(`onFilteredUGC`, (alert) => {
    console.log(`Alert filtered for ${alert.properties.event}`);
});

Event onFilteredState

Triggered when an alert is filtered out based on its state (Abbreviation)

parser.on(`onFilteredState`, (alert) => {
    console.log(`Alert filtered for ${alert.properties.event}`);
});

Event log

Triggered for logging purposes, providing log level and message.

parser.on(`log`, (message) => {
    console.log(data.message);
});

Callbacks and Functions

Function setDisplayName(name)

Sets the display name for the XMPP client. This requires reconnection to take effect.

parser.setDisplayName(`My Weather Parser`);

Function createEasAudio(description, header)

Generates an EAS audio file based on the provided description and header. Audio file will be located based on settings provided in the global_settings.eas_settings object. If you are running linux, festival is required to use this or it will error out.

parser.createEasAudio(`This is a test alert`, `EAS Header Info`);

Function getAllAlertTypes()

Returns an array of all supported alert types by the parser.

const alertTypes = parser.getAllAlertTypes();
console.log(alertTypes);

Function getEventPolygon(event)

Retrieves the geographical polygon for a given event based on its generated geocode and UGC zones. (Returns in GeoJSON format)

const polygon = await parser.getEventPolygon(event);
console.log(polygon);

Function searchStanzaDatabase(query)

Searches the internal stanza database for messages matching the provided query.

const results = parser.searchStanzaDatabase(`Tornado Warning`);
console.log(results);

Function setSettings({})

Dynamically updates the parser settings. Accepts the same configuration object as the constructor.

parser.setSettings({
    global_settings: {
        filtering: {
            ignored_icao: [`KXYZ`],
        }
    }
});

Function stop()

Stops the parser and disconnects from the NWWS service.

parser.stop();

References

NOAA NWWS Information | NWS API Documentation | XMPP Protocol | AtmosphericX |
Documentation | Discord Server | Project Board |
Code of Conduct | Contributing | License | Security | Changelogs |

Acknowledgements

• k3yomi
  • Lead developer @ AtmosphericX and maintainer of this module.
• StarflightWx
  • For testing and providing feedback (Co-Developer and Spotter @ AtmosphericX)