US Faces Bipolar April: Warm Spell Meets Arctic Cold Fronts

April in the United States is shaping up to be a month of dramatic temperature swings. As the calendar turns, a potent cold front with origins in the Canadian Arctic is set to sweep across the central and eastern U.S. on Easter Sunday, April 5. This system will temporarily end the recent warm spell, ushering in cooler temperatures for the East.

However, this cooler period is expected to be short-lived. The overall forecast for April, as indicated by NOAA's Climate Prediction Center, predicts above-average temperatures for a significant portion of the United States. Coastal areas might experience cooler ocean breezes on some days, but a developing atmospheric traffic jam is expected to create a warm wedge from the Atlantic to the Gulf Coast.

In the West, a ridge of high pressure is already contributing to above-average temperatures. This ongoing warmth is a significant concern for regions already experiencing well below-normal snowpack. The diminishing snowpack places additional stress on crucial water supplies, including reservoirs and groundwater sources, throughout the spring and summer months.