1980 年：前所未有的热浪袭击美国中西部北部和北部平原，多个城市气温达到 100 度。 1980: Unprecedented heat wave hits Upper Midwest and Northern Plains, multiple cities record 100-degree highs.

1980 年 4 月 21 日，一股前所未有的热浪袭击了美国中西部北部和北部平原，法戈、大福克斯和爱荷华州滑铁卢的气温均达到了全国最高水平，达到 100 华氏度。 On April 21, 1980, an unprecedented heat wave hit the Upper Midwest and Northern Plains, with Fargo, Grand Forks, and Waterloo, Iowa, tying for the national high at 100 degrees. 那一年冬天气候温和，春天来得早，导致该地区形成了一大片高压区。 The winter had been mild and spring came early that year, causing a large high pressure area to build across the region. 这导致了大范围的向下运动和地面附近的空气因压缩而升温，从而创下了许多历史新高。 This resulted in widespread downward motion and the air near the ground heating by compression, leading to numerous record highs.