NOAA Weather Alerts Scraper 🌩️

Scrape active US severe-weather alerts from the National Weather Service — no API key, no login. Get every active warning, watch, and advisory across the United States: tornado warnings, flash flood warnings, severe thunderstorm warnings, hurricanes, winter storms, heat advisories and more — as clean, flat JSON.

Powered by the official US National Weather Service public API (api.weather.gov). Filter by state and severity, and stream results straight into your app, spreadsheet, or database.

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✨ Why use this actor?

• No API key, no signup — the NWS feed is public; we handle the required headers for you.
• Datacenter-friendly — runs cheaply on standard datacenter servers, no residential proxy needed.
• Clean, flat output — one row per alert with the fields that matter (event, area, severity, urgency, expiry, safety instructions).
• State + severity filters — pull only Texas + California, or only Severe/Extreme events.
• Fast & cheap — hundreds of active alerts in seconds.

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📦 What you get (per alert)

Field	Description
id	Unique NWS alert identifier (URN)
event	Event name, e.g. "Tornado Warning"
headline	Human-readable headline
severity	Extreme / Severe / Moderate / Minor / Unknown
certainty	Observed / Likely / Possible / …
urgency	Immediate / Expected / Future / …
area	Affected area description (counties/zones)
effective / onset / expires / ends	ISO-8601 timestamps
status	Actual / Test / Exercise / …
message_type	Alert / Update / Cancel
category	Met / Safety / Health / …
sender	Issuing NWS office
description	Full alert text (capped 5,000 chars)
instruction	Recommended safety actions (capped 3,000 chars)
response	Recommended response, e.g. "Shelter", "Avoid"
source	Always noaa
scraped_at	ISO-8601 scrape timestamp

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🚀 Input

{
  "states": ["TX", "CA"],
  "severity": "Severe",
  "maxItems": 200
}

Input	Type	Default	Description
states	array	[]	2-letter US state codes. Empty = whole US.
severity	select	any	Minimum severity to keep (any / Extreme / Severe / Moderate / Minor).
maxItems	integer	200	Max alerts to store (max 2000).

Leave states empty for a nationwide sweep.

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💡 Use cases

• Weather apps & dashboards — power live alert banners and maps.
• Emergency alerting — trigger SMS/push notifications on Severe/Extreme events.
• Logistics & insurance — reroute fleets, flag policies in impacted areas.
• Research & journalism — build datasets of historical alert activity.

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💰 Pricing

Pay-per-result, roughly $0.50 per 1,000 alerts. Each saved alert costs $0.0005, plus the existing Actor-start charge shown on the Pricing tab. For example, 200 saved alerts cost $0.10 in result charges. Use maxItems and the run spending limit to control cost.

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🔗 Related actors by ninhothedev

• Weather Scraper
• Earthquake Scraper
• Air Quality Scraper
• OpenSky Flights Scraper

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🏷️ Keywords

noaa scraper, weather alerts api, nws alerts, severe weather warnings, tornado warning api, flash flood warning, us weather alerts, national weather service scraper, emergency alerts, weather data api, storm warnings, weather.gov scraper

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Data © US National Weather Service (public domain). This actor is an independent tool and is not affiliated with or endorsed by NOAA/NWS.

Start with no configuration

Run with {} to fetch up to 200 active US alerts. For a small trial use {"maxItems": 5}. Optionally select states and a minimum severity; Severe includes Extreme. Active alert updates are included. Existing API callers may still send "mode": "alerts".

Empty results and failures

No active alerts for your filters is a successful empty result, with status: "empty_success" in the OUTPUT key-value record. Source/network or invalid-response errors fail the run instead of pretending there are no alerts. A failure after some saved rows is identified as partial in that summary. Results retain the existing 20-field output contract. OUTPUT also gives saved/new/resumed item counts and whether the item or spending limit stopped collection.

On a resumed run, existing dataset IDs are skipped and maxItems includes already saved rows. The spending limit is checked before fetching the next page and before saving each alert. NOAA/NWS is the data source; use official weather.gov alerts for safety decisions.