Currently in Chicago— April 15th, 2022

The weather, currently.

Swinging into spring in Chicago.

Takeaways for Chicago's weather:

Takeaways for Chicago's weather:

  1. Feeling More Like March
  2. Bit Blustery But Not As Windy
  3. A Few Flakes Could Fly

Temperatures continue to head in the wrong direction. Highs fell into the 50s on Thursday and will remain there on Friday. We fall further this weekend, with middle 40s for highs on Saturday and lower 40s Sunday. Spotty light showers on Friday and then dry through most of the weekend. Some light rain that could mix with a few wet snowflakes late Sunday night into early Monday. We should slowly but surely warm next week, back to about average by Wednesday.

Tim McGill

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What you need to know, currently.

If you can think of a frightening natural phenomenon (hurricanes, tornadoes, wildfires), it’s generally safe to assume that climate change will make it more frequent and worse. Hail doesn’t attract the same media attention as hurricanes or tornadoes (although it often accompanies the latter), but it costs the United States around $8 to $14 billion in property damages annually.

It forms most frequently in the hottest summer months, which are especially conducive to violent thunderstorms. The stones themselves are built inside huge cumulonimbus clouds, whose upper regions are below freezing. Updrafts within the storm push raindrops up into this glacial cloud area, where they freeze into ice, then melt and re-freeze as they’re pitched around the layers of the storm system.

The size of the hailstone usually depends on the strength of the updraft—a stronger updraft can cause multiple hailstones to freeze together, whereas a weaker updraft produces more hail that’s generally of a more modest size. The largest hailstone ever found in the United States was eight inches in diameter and weighed nearly two pounds, and a tornado that hit Saledo, Texas on Tuesday left behind a six inch hailstone. Meteorologist Matthew Kumjian of Penn State University told BBC that theoretically speaking, a hailstone could get as large as a bowling ball, although no one has ever found one of that size.

How climate change will affect hailstorms isn’t totally clear yet. A warming climate means more thunderstorms, but it also means that the clouds themselves will be warming—a smaller below-freezing upper layer could mean less hail, but it’s hard to predict how the updraft will behave in intense storms. If you can avoid the larger hailstones, they can be useful in a drought though. A potentially record breaking stone in Texas was reportedly used for margaritas last summer before it could be officially measured.