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⇱ NWS Weather Alerts API - US Warnings & Severe Weather · Apify

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NWS Weather Alerts — US Active Warnings

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NWS Weather Alerts — US Active Warnings

Get active US weather alerts from the official National Weather Service: tornado, flood, winter storm, heat, and more. Clean JSON with severity, urgency, affected areas, and timing. Filter by state, severity, or event type.

Pricing

from $1.00 / 1,000 results

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Developer

👁 Nicolas van Arkens

Nicolas van Arkens

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19 days ago

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NWS Weather Alerts — US Active Warnings ⛈️

Get active US weather alerts straight from the official National Weather Service API as clean, structured JSON — tornado warnings, flash floods, winter storms, heat advisories, hurricanes, and every other alert type. Each record includes severity, urgency, affected areas, timing, and the full headline and safety instructions.

Filter by US state, severity, urgency, or event type, and schedule it for real-time monitoring and alerting.

Why use it

  • 🚨 All active alerts — nationwide or filtered to the states you care about
  • 🎚️ Severity & urgency — focus on Extreme/Severe or Immediate alerts only
  • 🗺️ Affected areas — human-readable area descriptions plus SAME/UGC geocodes
  • 🕐 Full timing — effective, onset, expires, and ends timestamps
  • 📋 Complete detail — headline, description, and official safety instructions
  • 🔁 Pagination handled — pulls all matching alerts, not just the first page

Use cases

  • Real-time alerting — pipe severe-weather alerts into Slack, email, or webhooks
  • Emergency management & logistics — monitor conditions across operating regions
  • Journalism — track breaking weather events as the NWS issues them
  • Event & travel planning — check active warnings for specific states
  • Datasets & dashboards — collect alert data over time for analysis

Input

FieldDescription
US state/territoryOne or more state codes (e.g. TX or TX,OK,LA). Empty = nationwide.
SeverityExtreme / Severe / Moderate / Minor / Unknown, or Any.
UrgencyImmediate / Expected / Future / Past / Unknown, or Any.
Event typeExact NWS event name (e.g. Tornado Warning).
Maximum alertsCap on results returned.

Output

{
"event":"Tornado Warning",
"severity":"Extreme",
"urgency":"Immediate",
"certainty":"Observed",
"headline":"Tornado Warning issued May 28 at 4:15PM CDT until 4:45PM CDT",
"areaDescription":"Dallas, TX; Tarrant, TX",
"senderName":"NWS Fort Worth TX",
"effective":"2026-05-28T16:15:00-05:00",
"expires":"2026-05-28T16:45:00-05:00",
"instruction":"TAKE COVER NOW! Move to a basement or an interior room.",
"response":"Shelter",
"sameCodes":["048113","048439"]
}

Export to JSON, CSV, or Excel, or pull via the Apify API. Connect to Slack, Sheets, Zapier, or Make for live alerting.

Notes

  • Uses the official public National Weather Service API (api.weather.gov). Independent tool, not affiliated with NWS or NOAA.
  • Covers the United States and its territories.
  • For life-safety decisions, always rely on official NWS channels directly — this tool is for data access and automation, not as a sole warning source.

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