Dog days of Houston’s summer to roll along

Houston officially clocked in at 97° on Thursday, registering our hottest day since way back on July 29th, when we hit the century mark. So, yeah, summer is back in style. And it’s not going to be in any hurry to let go.

Today & Weekend

We’re gradually settled back in to a typical late summer pattern of high heat, high humidity, and at least a handful of showers and storms each afternoon. For today, a Heat Advisory has been issued for the Houston metro area, Galveston, and College Station. Heat index values near 110° at times will be possible this afternoon. Actual temperatures today will top off in the mid or upper-90s.

It never hurts to reacquaint yourself with the symptoms of heat stress. (NWS)

 

Meanwhile, as showers and storms go, it appears today will see the highest coverage this weekend, which is to say it will be fairly similar to how Thursday ended up. Expect scattered noisy storms by mid-afternoon spreading inland from the south and east. Some folks see nothing, others may see an inch or two in some downpours. No serious trouble is expected. On the whole, we’ll call it about a 30 percent chance of storms today.

The going forecast for Saturday and Sunday is mainly sunny and dry. That said, in my experience, I wouldn’t be entirely floored if storm coverage is a bit higher than expected. I’m not talking a washout or anything, but I am talking about keeping an umbrella handy, just in case. We’re not in a strong, stable dry and hot pattern just yet. So there’s still enough opportunities for some storms to pop up. And I think it’s at least worth a mention.

Temperatures will top off in the mid-90s this weekend as well. While heat indices may be a bit lower Saturday and Sunday than we’ll see today, it will still get uncomfortable at times. Be sure to drink plenty of water and take it slow outdoors.

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Storm surge: a hurricane’s biggest impact

Several posts in our Weather Why series deal with hurricanes. In the past, we have discussed what affects a hurricane’s path, as well as why winds are strongest on the right side of a hurricane. As the peak of the Atlantic hurricane season draws near, we wanted to focus on the part of a hurricane that impacts people along the cost the most—storm surge.

While many people are concerned with rain, wind, and tornado risks when discussing the impact of hurricanes, the storm surge is by far the most dangerous factor. A 2014 study by the National Hurricane Center showed that 49 percent of all deaths attributable to a hurricane or tropical storm come from storm surges (by comparison, hurricane-spawned tornadoes only account for 3 percent of tropical storm and hurricane deaths). So what causes the storm surge? And when a tropical system makes landfall, what can you do to avoid it?

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And … welcome back to August, Houston.

After a relatively cool and wet first week of our region’s hottest month, we now return you to your regular August programming, Houston. That’s right, high pressure is building, and temperatures are rising.

Thursday and Friday

Skies will become partly sunny to end the work week, and this will allow for warmer days, with highs in the lower 90s near the coast, mid-90s in Houston, and upper 90s for areas further inland. The sea breeze should be strong enough to produce some scattered showers during the afternoon and evening hours, but except for some isolated downpours, I don’t expect accumulations to be too significant. With the humidity, heat index values will be very high, likely above 105 degrees, so please take care outdoors during the warmest part of the day.

Saturday and Sunday

Rain chances should fall back to near zero over the weekend, with highs remaining about the same under partly to mostly sunny skies. This will be a classic August weekend in Houston so if you can manage it, the best outdoor activities will involve some sort of water or other means to cool down. Fortunately the moist ground from our recent rainfall should keep highs in the mid-90s in Houston, rather than the upper 90s, but this is a small consolation.

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Sorry Houston, typically hot August weather will soon arrive

The National Weather Service has allowed the flash flood watch to expire for the entire Houston region, with the exception of Galveston and Chambers counties. Even for these areas, showers are dying out, and we should no longer face any kind of widespread, heavy rainfall threat. It has certainly been an atypical August so far, with the absence of high pressure allowing for lots of rainfall. Another benefit has been cooler weather. The first two weeks of August are typically the hottest time of year for our region, and we’ve been blessed with highs about five degrees below normal. Here’s what it’s been like at Bush Intercontinental Airport so far.

High and low temperatures at Bush Intercontinental Airport in August. (National Weather Service)

However, as you might suspect, this isn’t going to last. As pressures rise heading into this weekend, temperatures will follow.

Wednesday

The lower pressure system in the mid-levels of the atmosphere has slid off to the east. This means there is no real impetus for widespread, heavy rainfall across the Houston area today. However, atmospheric moisture levels remain high, so we’ll definitely see at least some scattered showers today—with better chances to the east of Interstate 45—and likely some isolated downpours. Fortunately, they should be relatively short lived. Highs will be around 90 degrees.


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