The calendar has caught up with the thermometer — summer time has arrived in Chicago.
That’s proper, spring is over — based on meteorologists. Though the summer time solstice is June 21, specialists want to trace climate in 4, three-month increments instead of astronomical seasons, that are outlined by equinoxes and solstices.
WGN-Ch. 9 chief meteorologist Tom Skilling is continuously requested why forecasters favor meteorological seasons.
“I prefer meteorological winter — and the other three seasons: spring (March to May), summer (June to August) and fall (September to November) — because they are unvarying in their beginning and ending dates. This is essential in making comparisons between seasons (temperatures, for example) from one year to another. The data are always from identical periods of time,” Skilling mentioned.
We have a look again with native climate specialists on the previous three months and selected key dates to spotlight meteorological spring 2022′s vital occasions.
Though spring lacked record-breaking occasions, it was nonetheless notable for its unusualness, mentioned Illinois state climatologist Trent Ford.
“Spring is typically a variable weather season, but this spring has been wild,” he wrote in an electronic mail to the Tribune. “April was cold, rainy, and gloomy. Temperatures were consistently 2-3 degrees below normal in April, but it was the consistent cloudiness and rain that was noteworthy. (O’Hare International Airport) had 21 days with measurable precipitation between late March and early May, which means that over that time period it rained on more days than it didn’t rain. It was also incredibly cloudy.”
A lunar eclipse on May 15 into May 16 was partially marred by clouds close to the lakefront. A WMAQ-Ch. 5 meteorologist nicknamed a 42-day stretch of principally cloudy days between March and April as “Sunless in Chicago.”
Then, Ford mentioned, the “oven turned on.”
Warmest excessive temperature: First 90-degree days of 2022
A brand new each day document excessive of 90 levels was reached at O’Hare International Airport (the town’s official recording web site) on May 11 — almost a month earlier than normal, based on the National Weather Service. It was the earliest 90-degree temperature recorded since May 10, 2011.
The subsequent day, the temperature topped out at 91 levels.
“The absolute temperatures that week in northern Illinois were VERY unusual, but what was truly remarkable was how quickly we moved from persistently cool and cloudy to hot and humid,” Ford mentioned. “This kind of flip in spring can be particularly dangerous for humans because we are not acclimated to the heat.”
Coldest excessive temperature: 23 levels
Anyone who went downtown to observe the primary dyeing of the Chicago River in two years because of the coronavirus pandemic can inform you — it was brisk. But it wasn’t the ultimate bone-chilling day of the season.
O’Hare airport recorded the final freezing low temperature of spring on April 17 — Easter. That was nearly regular, although bundling up for the vacation shouldn’t be.
The remaining freeze of spring — when the temperature is 32 levels or decrease — is often noticed April 5-15 within the metropolis and per week or extra later within the surrounding suburbs. Yet, these dates are extremely variable.
Highest each day rain accumulation: 1.54 inches
Short-lived tornadoes popped up in two rounds of severe weather with an EF0 recognized in Oak Brook — the closest harm to the Chicago space.
Ford mentioned the moist climate is sort of the distinction from spring 2021.
“In fact, the total precipitation for March this year in Chicago (3.69 inches) was nearly that of the entire spring last year (3.75 inches),” Ford mentioned.
The upside of all this rain — Illinois grew to become drought-free on April 26 for the primary time since March 2021. At least a part of the state registered drought for the earlier 55 consecutive weeks, which is the longest on document because the U.S. Drought Monitor started in 2000, based on Ford.
Highest each day snow accumulation: 2.9 inches
No data had been damaged by the sunshine snow, however possibly a number of spirits had been.
The final measurable snowfall of spring 2022 was 0.2 of an inch recorded on April 18 at O’Hare. Remember, measurable snowfall is one-tenth of an inch or extra on the bottom, whereas something much less is taken into account a hint quantity.
Accumulating snow of 0.1 of an inch or extra has been recorded in 4 of the 5 previous years on April 17 or later in Chicago, based on the National Weather Service. Normally, the final measurable snow happens round April 2.
More rain — probably: Ford credit the La Niña local weather sample, which has caught round since final fall, for spring precipitation that might proceed past the subsequent few months. It’s the second consecutive year La Niña has occurred — often called a “double dip.”
“It’s unusual for a La Niña to hang on through summer, and even more unusual to go into a third consecutive La Niña —which we would if it hung on into fall,” he mentioned.
Future thunderstorms, hail, flooding and tornadoes require good preparation: Brett Borchardt, meteorologist for the National Weather Service’s Chicago office, mentioned June and July are sometimes essentially the most energetic months regionally for severe weather. Now, he mentioned, it a superb time to brush up on security procedures and get a refresher on what outlooks, watches and warnings are issued by the climate service.
“Recall that 2021 also started slowly — we picked up the slack in June with the Naperville to Willow Springs EF-3 tornado,” he wrote in an electronic mail to the Tribune.