Coverage expanded globally in June 2026 with support for 100+ additional national weather agency sources across Asia-Pacific, Latin America, the Caribbean, the Middle East, and Africa.
Tomorrow.io provides real-time coverage of government-issued Severe Weather Events (SWE) from official meteorological agencies around the world. These alerts are integrated into the Tomorrow.io Platform and API, helping teams monitor weather risks and take action based on authoritative local sources.
Severe Weather Events complement Tomorrow.io’s proprietary and blended weather intelligence by incorporating alerts from trusted providers, including:
- The U.S. National Weather Service (NWS): https://www.weather.gov/
- Environment and Climate Change Canada: https://weather.gc.ca/
- MeteoAlarm (European national weather services): https://www.meteoalarm.org/
- World Meteorological Organization (WMO): https://public.wmo.int/
Global Coverage
Severe Weather Events are available across a growing network of countries and regions worldwide.
North America
Coverage includes:
- United States
- Canada
- Mexico
- Caribbean nations with participating meteorological agencies
Europe
Coverage includes countries participating in MeteoAlarm and related national weather alerting systems.
Asia-Pacific
Coverage includes:
- China
- Hong Kong
- Japan
- South Korea
- Macau
- Mongolia
- India
- Maldives
- Thailand
- Philippines
- Indonesia
- Singapore
- Myanmar
- Timor-Leste
- Vietnam
- Taiwan
- Australia
- New Zealand
- Solomon Islands
- Tuvalu
- Vanuatu
Middle East
Coverage includes national weather agencies across:
- Saudi Arabia
- Kuwait
- Qatar
- Bahrain
- Oman
- Jordan
- Iraq
- Iran
- Afghanistan
- Yemen
Central & South America
Coverage includes:
- Argentina
- Brazil
- Chile
- Ecuador
- Paraguay
- Uruguay
- Guyana
- Suriname
- Costa Rica
- Panama
- Belize
Africa
Coverage includes weather agencies across:
- North Africa
- West Africa
- Central Africa
- East Africa
- Southern Africa
Note: Severe Weather Event availability may vary by country based on the alert information published by the issuing agency. Coverage continues to expand as additional official weather agencies become available.
Types of Severe Weather Events Covered
The following types of alerts are commonly included:
- Thunderstorms
- Hurricanes and tropical storms
- Winter storms
- Floods
- Fog and low-visibility events
- Extreme temperatures
- High wind events
- Marine hazards
- Other significant weather threats reported by national agencies
Accessing Severe Weather Alerts on the Platform
To view:
- Go to the Map View
- Toggle on the Severe Weather Events layer
- Click on any alert shape to view full details in the side panel, linked to the source:
Severe Weather data can also be used in Insights and Alerts to trigger actions or notifications:
Note: Severe Weather Event content is provided directly from the originating meteorological agency. As a result, alert titles, descriptions, and notification content may appear in the source agency’s local language. Tomorrow.io does not automatically translate government-issued Severe Weather Event content.
Alerts by Severity
You can now refine Severe Weather Event (SWE) alerts by selecting the severity level most relevant to your operations. This helps reduce noise and ensures you are only notified about events that meet your risk threshold.
When to use
Use severity filtering when:
- You only want to be notified about high-impact events
- You need to reduce alert volume for operational teams
- You want alerts aligned with your organization’s risk tolerance
How to use
To configure severity for Severe Weather alerts:
- Go to Alerts
- Create a new alert or edit an existing one
- Select Severe Weather Events (SWE) as the alert type
- Choose the relevant weather event type
- Use the Severity dropdown to select one or more levels
- Complete the remaining alert configuration and save
Severity levels explained
Severity reflects the potential impact of a weather event:
- Extreme – Life-threatening or highly dangerous conditions
- Severe – Significant disruption or damage possible
- Moderate / Minor – Lower-impact events
Severity is defined by official issuing agencies such as NOAA and equivalent international bodies.
Severity vs. urgency
Severity and urgency are separate attributes used in government-issued alerts:
- Severity = how impactful the event is
- Urgency = how soon action is required
Example: An event can be high severity but not immediate, or urgent but lower severity.
API Access
Developers can retrieve and filter Severe Weather Events through the Tomorrow.io API.
- Refer to the Severe Weather Events API Documentations for integration instructions
- Events can be queried by location, type, severity, and issuing agency
Questions?
If you need assistance using or configuring this feature, contact our team at support@tomorrow.io.
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