Embodiments described herein may provide a method for generating a local hazard warning polygon and establishing a quality score thereof. Methods may include: receiving a plurality of probe data points from a plurality of probes within a mapped region, where each probe data point includes location information and weather condition information; generating, based on a plurality of probe data points indicating an adverse weather condition, a local hazard warning condition polygon including a plurality of local hazard warning condition vertices; receiving weather conditions at each of a plurality of map points within the mapped region; correlating each local hazard warning condition vertex with a respective map point within the mapped region; and establishing a quality score of the local hazard warning condition polygon based on a proportion of the local hazard warning condition vertices indicating an adverse weather condition agreeing with a weather condition at a respective correlated map point.