# NWS Severe Weather Alert Monitor Data API (`koalastuff/nws-weather-alert-monitor`) Actor

Retrieve active U.S. National Weather Service alerts with bounded area and severity filters, normalized timing, impact text, and official source URLs.

- **URL**: https://apify.com/koalastuff/nws-weather-alert-monitor.md
- **Developed by:** [Timo Schmidt](https://apify.com/koalastuff) (community)
- **Categories:** Automation, News, Developer tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 weather alerts

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## NWS Severe Weather Alert Monitor API

[Open the NWS Severe Weather Alert Monitor in the Apify Store](https://apify.com/koalastuff/nws-weather-alert-monitor)

### Try this first

Retrieve active U.S. National Weather Service alerts for operational dashboards, logistics, safety workflows, and regional monitoring.

```json
{"areas":["TX","FL"],"severity":"Extreme","maxResults":25}
```

### Reliability and limits

- Official weather.gov Alerts Web Service only; no browser, proxy, login, or paid service.
- One bounded request per run, at most 500 alerts, conservative timeout, explicit User-Agent, deduplication, and original official links on every item.
- The NWS recommends no more than one request every 30 seconds for polling. This Actor performs one request per run; do not attach a high-frequency schedule.

### Pricing

- Actor start: USD 0.00005
- Weather alert: USD 0.001

### Source

National Weather Service Alerts Web Service: <https://www.weather.gov/documentation/services-web-alerts>. This independent Actor does not replace official warnings, emergency instructions, or local authorities.

For recurring research, duplicate the ready-made Task and attach your own Apify Schedule. This portfolio does not create paid schedules automatically.

# Actor input Schema

## `areas` (type: `array`):

Optional two-letter U.S. state or territory codes.

## `event` (type: `string`):

Optional exact event name such as Tornado Warning.

## `severity` (type: `string`):

Optional severity filter.

## `urgency` (type: `string`):

Optional urgency filter.

## `certainty` (type: `string`):

Optional certainty filter.

## `maxResults` (type: `integer`):

Hard output and billing limit.

## Actor input object example

```json
{
  "maxResults": 25
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("koalastuff/nws-weather-alert-monitor").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("koalastuff/nws-weather-alert-monitor").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call koalastuff/nws-weather-alert-monitor --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,koalastuff/nws-weather-alert-monitor"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/hjhVKlYop86papSOD/builds/PnaBhi0dPYvdryQHQ/openapi.json