Late-Season Cold Weather Affecting Northern and Eastern United States

Apr 25, 2026, 10:24

Introduction

A series of weather systems are bringing freezing temperatures and snow to the Northern Rockies. These systems are also expected to bring below-average temperatures to the central and eastern United States in early May.

Main Body

In the Northern Rockies, the National Weather Service (NWS) has issued winter storm warnings and advisories. In north-central Montana, officials expect one to three inches of snow and wind gusts up to 35 mph. Meanwhile, parts of Wyoming could see between six and ten inches of snow from Saturday evening through Monday. Experts emphasized that these conditions will likely reduce visibility and make travel difficult for drivers and outdoor workers. Additionally, freeze warnings have been issued for Idaho, Utah, Montana, Washington, and Oregon, where temperatures may drop into the teens and low twenties. The NWS warned that these freezing temperatures could last for several nights, which poses a risk to outdoor plumbing and sensitive plants. Regarding the eastern United States, the Climate Prediction Center claimed that a Canadian weather system will move south during the first few days of May. This follows a period of unusually warm weather on the East Coast. The Mississippi Valley, the Appalachians, the Ohio Valley, and the Great Lakes are at the highest risk for cold temperatures between April 30 and May 5. The NWS further asserted that this cold pattern might damage early-blooming crops, although specific local warnings have not yet been finalized.

Conclusion

Current weather patterns have created dangerous travel conditions and agricultural risks in the West, while a cold air mass is expected to affect the central and eastern U.S. through early May.

Vocabulary Learning

advisory (n.)
official announcement / a notice that gives information or a warning公告；警告
Example:The government issued a travel advisory due to the approaching hurricane.
assert (v.)
state / to say that something is certainly true斷言；肯定地說
Example:The scientist continued to assert that his theory was correct despite the criticism.
emphasize (v.)
highlight / to give special importance to something強調；著重
Example:The teacher wanted to emphasize the importance of submitting the assignment on time.
sensitive (adj.)
delicate / easily damaged or affected敏感的；易受影響的
Example:Some plants are very sensitive to cold weather and must be kept indoors during winter.
visibility (n.)
clarity / the distance one can see as determined by light and weather能見度
Example:Heavy fog significantly reduced visibility on the highway this morning.

Sentence Learning

These systems are also expected to bring below-average temperatures to the central and eastern United States in early May.
Passive Voice: Used to report expectations or predictions objectively without focusing on who is doing the expecting.被動語態：用於客觀地報告預測或預期，而不需要強調誰在進行預測。
Additionally, freeze warnings have been issued for Idaho, Utah, Montana, Washington, and Oregon, where temperatures may drop into the teens and low twenties.
Relative Clause (where): Used to provide additional geographical information about the locations mentioned.關係子句 (where)：用於提供上述地點的額外地理資訊。
The NWS warned that these freezing temperatures could last for several nights, which poses a risk to outdoor plumbing and sensitive plants.
Relative Clause (which): Used to describe the consequence or result of the entire previous clause.關係子句 (which)：用於描述前一個完整子句所導致的結果或影響。
The NWS further asserted that this cold pattern might damage early-blooming crops, although specific local warnings have not yet been finalized.
Linking Word (although): Used to introduce a contrasting or qualifying fact to the main statement.連接詞 (although)：用於引入與主句相對或起限定作用的事實。
Current weather patterns have created dangerous travel conditions and agricultural risks in the West, while a cold air mass is expected to affect the central and eastern U.S. through early May.
Linking Word (while): Used to show a contrast or simultaneous occurrence between two different regions.連接詞 (while)：用於顯示兩個不同地區之間對比或同時發生的情況。