A significant heat dome is currently engulfing the United States, resulting in record-breaking temperatures for March across 14 states. With temperatures reaching as high as 112°F in areas of Arizona and California, this heat wave is recognized as one of the most widespread in American history. The National Weather Service's Weather Prediction Center has indicated that the heat dome is progressing eastward, potentially bringing temperatures in the mid-90s°F to the southern and central Plains by Wednesday.