Alarms

Weather alarm thresholds

AccuWeather weather alarms are determined using the daily forecasts for a location. An alarm exists for a location if the forecast weather meets or exceeds the following thresholds:

Alarm TypeImperial ThresholdMetric Threshold
Rain0.5 inch12.7 mm
Snow1 inch2.54 cm
Ice0.1 inch0.254 mm
Sustained Wind30 mph48 kph
Wind Gust40 mph64 kph
Thunderstorm Probability75%75%
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