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A powerful ridge of high pressure is building over eastern Canada, creating dry conditions and below-seasonal temperatures from Monday through Friday. DON’T MISS: What does a classic fall storm look like in your part of Canada? The system's intensity is notable, with pressure levels potentially reaching 1040 hPa over parts of Quebec. This could set new all-time September pressure records in cities like Val-d’Or and Quebec City, while Montreal and Ottawa are expected to come close to breaking their records. Over the next five days, temperatures across eastern Canada will stay below seasonal due to the influence of the high pressure system. RELATED: Longest dry streak of 2026 in the works across southern OntarioThe system’s clockwise wind pattern will bring northwesterly flow to Atlantic Canada and northeasterly winds across southern Ontario and southern Quebec. Impacts from this system also include extended dry spells across Ontario and Quebec. Content continues belowThe pattern will help suppress precipitation, resulting in an estimated rainfall deficit of 30 to 50 mm through the end of the month.

This Day In Weather History is a daily podcast from The Weather Network, featuring stories about people, communities and events and how weather impacted them.--Between September 20 - 21, 2018, 37 hit areas of the United States and Canada, including Ohio, Iowa, Minnesota, Wisconsin, eastern Ontario, and southern Quebec. On Sep. 20, a warm front in an unstable air mass popped up ahead of a lofty cold front. That evening, a convective system produced several tornadoes across Minnesota. An EF2 tornado caused widespread damage in the town of Morristown, and another one of the same strength damaged an airport in Faribault. Additional tornadoes were confirmed in Iowa, Wisconsin, and Ohio. Dunrobin, Ontario. Courtesy of TWN. A total of 25 confirmed tornadoes hit Minnesota, making it the state's third-most prolific tornado day on record. Content continues belowOn Sep. 21, the warm air mass reached Ontario, bringing thunderstorms and torrential downpours. That afternoon, tornadoes hit eastern Ontario and southern Quebec. Seven tornadoes were confirmed between Ottawa, Ontario and Gatineau, Quebec.

There are a few urban myths surrounding the equinoxes that make their rounds on the internet each year, no matter how often they're debunked. The balancing actWhenever the equinox is approaching, spring or fall, word spreads that this is the day to perform a "fantastical feat" of egg balancing. While balancing an egg on its narrow end is challenging at any time, the equinox in no way makes that task easier. These two eggs were balanced on there ends on March 24, 2015, four days after the equinox. (Scott Sutherland)RELATED: Equinox vs Equilux: When do we see equal day and night this fall? The reason for this? Basically, while it's true that every object in the universe tugs on every other object, here on Earth's surface, our planet's gravity completely overwhelms any other gravitational forces we (or eggs we are balancing) might experience. The Moon's gravity is the next strongest influence, followed by the Sun, and they are the reasons for our ocean tides. However, the tides only occur due to the cumulative effect of these objects simultaneously pulling on each individual molecule in an immense body of water.

We will officially welcome the fall season on September 22, a start to the Autumnal Equinox, when the sun crosses the celestial equator. The date in the Northern Hemisphere varies slightly, arriving on September 22 or 23 each year. However, meteorological fall consistently begins on September 1 and ends on November 30. These fixed dates allow scientists to streamline the tracking of weather records and simplify comparisons of seasonal temperatures. Visit our Complete Guide to Fall 2026 for an in depth look at the Fall Forecast, tips to plan for it and much more! Despite the more obvious signs of the changing seasons like falling leaves, and pumpkin spice everything, there's a few important things to keep in mind as we transition out of the summer months. Daylight hours decreaseFrom the first day of fall to the first day of winter, the amount of daylight hours drops from 12 hours and eight minutes, to just nine hours and 27 minutes. It's certainly the time of year when we notice mornings and nights getting much darker.

For months tree leaves are green, and then September arrives and they suddenly burst into yellows, oranges, and reds. So, why does this happen, and where did the leaves get those colours? Here's the science behind this seasonal colour-change. Plants, including trees, get the food they need by combining three things — water, carbon dioxide, and sunlight. They do this through a chemical process known as photosynthesis, using a group of chemicals called chlorophylls. DON'T MISS: The planets visit with the Moon throughout the month of SeptemberChlorophylls are complex organic molecules whose primary function is to absorb light, and then convert that light energy into chemical energy. The chemical energy derived from this process then goes towards combining water and carbon dioxide into sugars that the plant uses for food. In the process of photosynthesis, chlorophyll breaks down, but the plant makes more using some of the sugars it produced, along with energy from sunlight and nutrients absorbed from the soil. Thus, during the warmer months of the year, when there is an abundance of intense sunlight, chlorophyll is constantly broken down and remade inside a tree's leaves.

Fall equinox does not actually divide night and day evenlyThe fall equinox marks the beginning of autumn in the Northern Hemisphere each September. Here are some answers to the most common questions about this. When is it? In 2026, the autumnal equinox happens at 8:05 p.m. EDT Tuesday, Sept. 22. What happens at that exact time? The sun's most direct rays will shine on the equator on Tuesday. That only happens one other time of the year, during the spring equinox in late March. So, if you happen to be along the equator, the sun will be directly overhead in the middle of the day Tuesday. That means you'll see virtually no shadow cast on objects along the equator. If you care for a more geeky definition and love geometry, NASA is happy to oblige:Get More of Our News on GoogleSet The Weather Company as a 'Preferred Source' to get quicker access to the news you value. The equinox marks the exact moment when the center of the Sun crosses the plane of our planet’s equator.— NASAWhat does this moment mean? It's the official start of astronomical fall in the Northern Hemisphere. However, south of the equator, it’s their start of spring and it’s called their spring, or vernal equinox.

LATEST UPDATE October 15, 2026: Winter 2026/2027 Snowfall Forecast: How October Data Changed Your Region’s OutlookNew Winter 2026/2027 snowfall predictions are starting to show a strong Super El Niño signature, with clear regional differences visible across the United States, Canada, and Europe. The latest September forecast update shows a better view of where snowfall could run above or below normal during the coming season. The developing Super El Niño will be the major global driving force in the coming months, reshaping the Pacific jet stream and winter storm tracks. Historical data gives us a good idea of how a super event can shape the winter weather, with the latest forecast data starting to show those same signals for Winter 2026/2027. In this article, I will first look at the latest Super El Niño development and the past snowfall patterns, and then I will break down the new Winter 2026/2027 snowfall forecast. But further below, I have prepared a new Snowfall Explorer interface. There, you can check the latest seasonal or monthly snowfall maps for your own state, province, country, or broader region across the U. S., Canada, and Europe.

Autumn is known for its rollicking storms throughout the Great Lakes. But this transition season also has a gentler side. We’re in the midst of an impressive dry streak throughout southern Ontario, and there’s no confidence that an end is in sight anytime soon. DON’T MISS: What does a classic fall storm look like in your part of Canada? Dry air dominates across southern OntarioA dominant ridge of high pressure will continue to expand across much of southern Ontario and southern Quebec by Monday. Calmer weather is favoured beneath upper-level ridges as they generate sinking air, which isn’t conducive to precipitation. This centre of high pressure will reach its peak intensity by Wednesday and Thursday. This feature will split the polar jet stream to the north and the subtropical jet stream to the south, leaving behind an absent storm track across Central Canada. We may see this pattern stick around for a while. Computer guidance suggests that rainfall will hold off across Ontario through at least next weekend, while regions of Quebec may see showers from a system expected to affect New England later this week.

The main driver of this rapid thermal drop this week is a massive upper-level blocking ridge building over the North Atlantic and Scandinavia. This high-pressure area is forcing a direct atmospheric corridor for meridional flow from the north, allowing dense, polar-origin air to spill deep across Eastern Europe. As the cold front pushes south, daytime high temperatures across impacted regions will plunge by 10 to 15 °C compared to recent seasonal averages. As the polar air mass settles over the region, clear nocturnal skies and lighter winds will support first morning frost across low-lying valleys and agricultural basins from the Baltic countries down to the central Balkans, reaching Romania and Bulgaria. Across the higher elevations of the Carpathians and possibly the Northern Balkans, falling freezing levels will trigger the first notable high-altitude snowfalls of the autumn season. While the cold intrusion will last only through the mid-week days, it will be significant for the second half of September. The meteogram charts for Niš, Serbia (upper) and Istanbul, Turkey (bottom) both show a sharp temperature drop on Tuesday and Wednesday.

THE TAKEAWAYTropical Storm Odalys has formed in the East Pacific. Tropical Depression Seveteen-E is forecast to become the next hurricane in the Eastern Pacific. The storm will usher in Pacific moisture that will fuel a flood threat in the Southwest. A Level 2 out of 4 flash flood risk is already in place for Tuesday. A new tropical system has been designated a tropical depression and is forecast to intensify quickly — possibly into a strong hurricane — in the Pacific. The FOX Forecast Center said Tropical Depression Seventeen-E formed near Mexico, where the environment is conducive to tropical activity. Tropical Depression Seventeen-E stats.(FOX Weather) The storm will drift northward toward the Mexican coastline, and computer forecast models indicate the tropical depression could intensify into a strong hurricane. Tropical Depression Seventeen-E could bring destructive hurricane-force winds, coastal storm surge and torrential rain capable of triggering catastrophic mudslides to the southwestern and west-central coasts of Mexico.

FILE: How do mosquitoes decide who to bite? Research shows that female mosquitoes find humans by tracking scent cues, like chemicals from our skin and breath. Mosquitoes are also drawn to certain colors. University of Washington biology professor Jeffrey Riffell and his team study mosquito sensory systems, especially their sense of smell, to understand how mosquitoes find food. FRANKFURT, Germany - Three people have been killed in a rare "airport malaria" outbreak near a major international travel hub in Germany. German authorities described the incident as a rare outbreak linked to an infected mosquito transported aboard an airplane, according to our affiliate FOX 32. NEW TSA PRECHECK BENEFIT ALLOWS ADMISSION TO AIRPORT GATES BEYOND SECURITY FOR NON-TRAVELERSThe third victim, a resident of Schwanheim, Germany, died recently, and an airport worker also died after contracting malaria in August. Another German resident also came down with malaria. Neither person had recently traveled to a region where malaria is common, FOX 32 reported. Mosquito on the skin drinks blood macrophotography.

An elevated threat of flash flooding is expected across the Midwest, with heavy rainfall affecting areas already soaked this week including Chicago into parts of Indiana and Ohio. Happening nowThe map below shows where rain is falling right now, along with any flash flood warnings in the green polygons. Local flash flooding is possible in cities such as Chicago, Indianapolis and Columbus. Day by day forecastThrough Monday morning, the heavy rain threat may linger from northern Illinois through northern Indiana and western Ohio, while also spreading into parts of the Northeast. With the saturated ground from Saturday's rainfall, flooding remains a threat across Chicago to Columbus. Flooding is possible in the area marked in yellow on the map below. How much more rain? Additional rain is expected in the darker green on the map below. Get More of Our News on GoogleSet The Weather Company as a 'Preferred Source' to get quicker access to the news you value. The biggest concern through Monday is the corridor from eastern Iowa into northern Illinois, northern Indiana and western Ohio, where flooding rain fell last week.

With a little more than two months still to go in the Atlantic season (Nov. 30), we still are awaiting the first hurricane, an occurrence that already has set a record for the latest in the year (if it does happen). There are multiple factors in why there has been no hurricane, yet, but can at least be partly blamed on a "super" El Niño in progress. During typical El Niño years, hurricane development is usually surpressed given the amount of wind shear present in the Atlantic basin. Still, though, it is odd that we haven't seen a single hurricane at this point in the season. There is still plenty of time left in the 2026 season, but with the climatological peak in the rearview mirror (Sept. 10), is it possible we could see a hurricane-less Atlantic this year? Well... Fay forms with an outside chance of reaching hurricane statusAs of Sept. 20, there have been six recorded tropical storms and zero hurricanes. Content continues belowWe do have a new tropical storm in the Atlantic basin, with forecasters now eyeing a chance it could approach or reach hurricane status. (NOAA/NASA)Fay came to fruition in the Atlantic basin early Sunday, but the storm poses no threat to land.

Soggy Sunday to end Summer for millions across the Northeast Heavy rain has arrived in parts of the Northeast as millions wrap up the last weekend of summer. More rain is expected overnight into Monday and travel trouble looms for major cities along the I-95 corridor. FOX Weather Meteorologist Michael Estime breaks it all down. THE TAKEAWAYSunday looks to be a wet and soggy day, with the heaviest rain targeting major cities along the I-95 corridor. A Level 1 flash flood threat covers the New York City metro area. Soils remain saturated across parts of the Northeast, making the region particularly vulnerable to flash flooding. Another coastal storm is brewing and is expected to impact the East Coast later this week. Heavy rain is returning to the Northeast this weekend, with the New York City metro area in the bullseye of a flash flood threat Sunday, just one week after floods slammed parts of Connecticut and northern New Jersey. Rain moved through the Ohio Valley and West Virginia, and into the Northeast, on Saturday, with heavy rain arriving across the Interstate 95 corridor from Richmond, Virginia, to Boston on Sunday morning.

Stock photo: A dramatic close-up of dark storm clouds, capturing intense atmospheric tension and potential for rain. The visual style is moody and evocative, suitable for conveying themes of nature's power or impending weather changes.(Getty Images)A rare high-elevation tornado has been confirmed in Utah, according to the National Weather Service. The tornado touched down on Friday afternoon in the mountains near Fruit Heights, a small city about 20 miles north of Salt Lake City, at an elevation around 7,500 feet. Video of the twister shared on social media shows the vortex's tight rotation and debris being lifted high into the air. No damage or injuries were reported.(MORE: Smokenado towers over Utah wildfire)Tornadoes are typically uncommon in mountainous regions because one of the most important ingredients for severe storms and tornadoes are warm, moist, unstable air. The air in higher-elevations are typically much cooler, drier and more stable than lower-elevation terrain. Mountains can also act as a barrier to rich moisture and disrupt wind flow patterns. Get More of Our News on GoogleSet The Weather Company as a 'Preferred Source' to get quicker access to the news you value.

After a soggy weekend across the Northeast, another potential storm system could develop next week, bringing gusty winds, cooler temperatures and rain to millions across the region. THE TAKEAWAYA storm is expected to develop off the Mid-Atlantic coast next week. Temperatures could plunge 10 to 15 degrees below average across parts of the Northeast. Gusty winds, rain and rough surf may impact the region. Following a soggy weekend across the Northeast, another potential storm system could develop next week, bringing gusty winds, cooler temperatures and rain to millions across the region. A strong area of high pressure is forecast to move into eastern Canada next week, while an area of low pressure could develop off the Mid-Atlantic coast by midweek – setting the stage for a coastal storm sending impacts into the Northeast. AVALON, NEW JERSEY - OCTOBER 12: A powerful nor'easter brings coastal flooding to the Jersey Shore on Sunday afternoon, with high tide sending water over docks and into streets in Avalon, New Jersey, United States on October 12, 2025. Strong winds and heavy surf caused dangerous conditions along the coast as officials urged residents to avoid flooded areas.

THE TAKEAWAYRelentless heavy rain and flooding, brought on by severe storms, is targeting millions across the Midwest and the Great Lakes through Monday. The Storm Prediction Center is warning of "locally considerable urban flooding" in areas such as Chicago. The week-long firehose of storms aimed at parts of the Midwest, Plains and Ohio Valley will extend through Sunday, putting millions at risk of flash flooding as thunderstorms repeatedly track over the same corridor. NOAA's Weather Prediction Center (WPC) has issued a Level 2 out of 4 flash flood threat for parts of the Midwest through Monday. A widespread 3 to 5 inches of rain could still fall across the region, including Chicago, with some localized areas potentially seeing 5 to 8 inches. next Neighborhoods in Bluffton, Indiana, flooded on Sep. 17, 2026.

A coastal brown bear rolls through a field of fall-colored fireweed along Kinak Bay in Katmai National Park, Alaska, part of the same hyperphagia drive fueling this year's Fat Bear Week contestants.(Paul Souders/Getty Images)Right now, a black bear near you could be trying to eat 20,000 calories a day. Neither the number nor the urgency behind it is an exaggeration. This is what fall asks of every bear headed into winter. What's actually happeningThe behavior is called hyperphagia, a pre-hibernation feeding frenzy that kicks in as daylight shortens and temperatures drop. Bears eat and drink nearly nonstop for weeks, some packing away 15,000 to 20,000 calories in a single day. Processing that much food takes water, too: bears in hyperphagia can drink up to to 2 gallons a day just to keep up.(MORE: Humans don bear suits in adorable wildlife rehab effort)Why the math works this wayBears don't eat, drink or go to the bathroom during hibernation, so every calorie they'll burn over the winter has to be stored as fat before they den up. Hyperphagia is that stockpiling window, compressed into a few frantic weeks of near-constant foraging.