Low Level Windshear Alert System
Real-time windshear detection and alerting in any weather.
IN REAL TIME, IN ANY WEATHER
The anemometer-based Vaisala Low Level Windshear Alert System (LLWAS) is the most widely used solution for airports that experience low-level horizontal windshear. Using ultrasonic wind sensors, the LLWAS is part of the Vaisala AviMet® Windshear Alert System: a scalable, end-to-end solution suitable for any airport in the world, whatever its traffic or unique conditions.
Vaisala aviation experts conduct detailed site surveys to determine the optimal combination of the three best detection technologies — anemometer-based LLWAS, X-band Weather Radar and wind lidar — to deliver the most comprehensive and dependable windshear awareness solution available.
LLWAS key features:
- Ground-based system measures and issues alerts for windshear of 15-30 knots and microbursts of 30+ knots
- The fastest detection technology for windshear, measuring every 10 seconds
- 90% or greater probability of microburst detection, coupled with 10% or less probability of false alerts
- Sends immediate, actionable alerts to pilots and air traffic control for quick responses, shared situational awareness, and successful windshear avoidance
SUITABLE FOR MANY AIRPORTS
Vaisala’s LLWAS is affordable, making it a good choice for many kinds of airports. Wherever it is deployed, pilots and air traffic control gain real-time windshear awareness for better decision-making, more efficient traffic management and streamlined operations.
The LLWAS uses the latest windshear algorithms developed for the U.S. Federal Aviation Administration (FAA) and patented by the University Corporation for Atmospheric Research Foundation (UCAR). The solution is fully compliant to ICAO standards and recommendations, as well as WMO regulations.
Benefits:
- A cost-effective solution with real-time windshear detection capability in all kinds of weather conditions
- The most proven and reliable windshear algorithm to estimate the effects of the windshear on aircraft
- Based on the same components as Vaisala AviMet AWOS for seamless integration, compatibility and ease of use
EXPERT SITE SELECTION AND SUPPORT
The LLWAS consists of an array of ultrasonic wind sensors installed around your airport’s runways and approach corridors. Our experts conduct detailed site surveys to ensure optimal sensor placement and operation in almost any airport geography.
Look to Vaisala for dependable support, project capabilities, and training so you can get the most from your system. With decades of experience providing the best technologies and the finest support, Vaisala’s philosophy of partnership is unmatched in the industry.
SEAMLESS INTEGRATION + EXPANDABILITY
The system is designed and built on common Vaisala technologies and components for seamless compatibility and expandability with other airport weather systems.
Applications:
- Anemometer-based, low-level windshear detection and alerting in the runway corridor
- Can be deployed as a standalone system, as an extension to an existing AWOS, or as part of the AviMet Windshear Alert System
Get started with Vaisala’s LLWAS today
Contact us to learn how to make the invisible visible at your airport.
