NEW: Central US Winter Storms February 2021 UPDATED: Arctic Amplification UPDATED: Winter Storm Risk Increase Explainer: Tropical Cyclone Climatology by National Hurricane Center Go to Site Related Events Hurricane Harvey 2017 Related Climate Signals Tropical Cyclone Steering Change Intense Cyclone, Hurricane, Typhoon Frequency Increase Intense Northwest Pacific Typhoon Frequency Increase Intense Atlantic Hurricane Frequency Increase