Weather Tidbits: Frost Quakes
This Weather Tidbits answers what is a frost quake? Frost quakes are seismic events but triggered by the weather. These happen temperatures rapidly fall, typically from near freezing to subzero within 48 hours. This will cause the underground water to freeze; which was saturated from plenty of recent wet precipitation. The new ice expands putting extra pressure on the surrounding soil and bedrock until that pressure builds until the soil and rock cracks. This cracking can result in loud booms or shaking. They are not as strong as earthquakes; but can be strong enough that it can be measured on seismographs. Plenty of snow prevents frost quakes to occur due to insulation by keeping the frigid air from affecting the ground.