Why Is the Southeast So Humid?

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iStock

You don’t have to hop on a plane to visit the tropics when you live in the southeastern United States—it can often feel like you’re already there. It gets humid in this corner of the country. Not just regular humid, mind you, but so disgustingly moist that you can almost feel the air slosh across your skin as you walk out the front door. But what is it that makes the Southeast so humid compared to the rest of the country?

Mugginess during the summer is a problem just about everywhere you go in the United States. The corn fields of Iowa can see a higher dew point than a rainforest. But even there the steaminess doesn’t last as long as it does in the Southeast. Much of it has to do with the region’s proximity to the Gulf of Mexico, which usually feels like bathwater on a good day. The water in some parts of the Gulf of Mexico can heat up to 90°F during the peak of the summer, and the water isn’t quick to cool down once cold fronts start sweeping through in the fall and winter. The warmth of the Gulf and the Caribbean Sea to its south keep moisture in plentiful supply.

It’s not just the water itself that contributes to the mugginess. The water vapor over the ocean doesn’t migrate inland on its own—weather patterns drag it inland and keep it locked in place. Strong winds blowing counterclockwise around low-pressure systems often help bring this tropical moisture inland, especially during the cooler months when you expect to shiver rather than sweat. During the summer, though, persistent ridges of high pressure keep the southeast feeling gross with a moist southerly wind. These “heat domes” deflect most weather systems approaching from the west, basically locking the Southeast into a state of sultriness for weeks and even months at a time.

The constant moisture isn’t merely uncomfortable—it can be downright dangerous. The human body is able to cool itself when sweat evaporates from the surface of exposed skin. But sweat has a harder time evaporating when there’s too much moisture in the air, which could cause a person to overheat. This phenomenon is measured with the heat index, and it’s the cause of thousands of heat-related illnesses and deaths every year.

All of that moisture makes both day and night downright miserable. If you’ve ever been to the desert during the warmer months, you know firsthand that even on a day when the high temperature exceeds 100°F, the mercury can plummet once the Sun goes down and get chilly enough to require a light jacket. The wild temperature fluctuations in desert regions are due to the dryness of the air there. Moist air has a higher heat capacity, so it takes a lot longer to warm up and cool off.

Meanwhile, the gross humidity levels in the Southeast on most days keep it from getting excessively hot, but it also keeps the nights from cooling off very much. The lack of nighttime relief compounds the danger posed by heat and humidity.

Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

Stock Catalog, Flickr // CC BY 2.0
Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

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5 Ways to Help Victims of the West Coast’s Wildfires

A wildfire near Shaver Lake, California, earlier this month.
A wildfire near Shaver Lake, California, earlier this month.
David McNew/Getty Images

Wildfires continue to ravage millions of acres across California, Oregon, and Washington, and strong winds forecasted in some of those regions could aggravate the blazes. To prevent future fires, we need to focus on combating climate change through policy reform and sustainable living. But for people directly affected by the fires, their current needs are much more urgent: food, shelter, and funds. Here are five organizations that can help you help victims.

1. Red Cross

The Red Cross has about 600 workers coordinating meal distribution, installing victims in shelters and hotels, and providing other support across Northern California. You can donate to the cause by choosing “Western Wildfires” under “I Want to Support” on the donation page here.

2. GoFundMe

GoFundMe’s affiliated nonprofit, GoFundMe.org, has created a Wildfire Relief Fund for this particular outbreak of fires on the West Coast. You can make a donation to the overall fund here, or you can explore the separate hubs in the description to find individual GoFundMe pages to give to.

3. Los Angeles Fire Department Foundation

Unfortunately, the city of Los Angeles doesn’t allocate enough public funds to the fire department to equip firefighters with all the important gear they need. The Los Angeles Fire Department Foundation tries to fill those demands by providing things like hydration backpacks, thermal-imaging cameras, brush-clearing tools, and more. You can donate to the general fund here, or choose a specific fire station from the dropdown menu.

4. VEMAnet

VEMAnet (Volunteers for the Emergency Management of Animals Network), is an offshoot of the Good Shepherd Foundation, which links animal owners who need emergency help with volunteers who can transport and/or house their animals—anything from cats to cattle—temporarily. You can post details about what animals you can accommodate here; and if you or someone you know needs help evacuating any pets, you can request help or browse available listings here.

5. California Fire Foundation

The California Fire Foundation’s Supplying Aid to Victims of Emergency (SAVE) program distributes $250 gift cards to wildfire victims, so they can decide for themselves what their most pressing needs are. You can donate here.