Eric Berger

Yes, an August “front” has moved into Houston

Good morning. The Houston region saw its first real taste of rainfall in two weeks early on Monday as a line of storms pushed from north to south through the area. It was hit or miss in the metro area, with some parts of the region picking up as much as 1.5 inches, and others seeing lightning, but no real rainfall. The storms heralded the arrival of a front that will eventually bring some drier air into the region—which we’ll feel this in the morning and evening.

Monday

Some rain chances will linger into this morning, but as drier air moves in we should see gradually diminished precipitation throughout the day. By this afternoon skies should be partly to mostly sunny, and we can expect highs to reach the upper 90s. Winds will be light, but out of the north at 5 to 10 mph. Low temperatures will be a degree or two cooler tonight, but the real effect will be in the “feels like” department, not the actual mercury. This effect will be more pronounced north of I-10 than along the coast.

NAM model forecast for dew points at 7pm CT Tuesday. (Weather Bell)

Tuesday

As more dry air filters into the region we’ll see a hot and sunny day. Temperatures will push into the upper 90s, and probably touch 100 degrees for inland areas. If you’re thinking, this sure doesn’t feel like a front, well, you’re right. But this is how cool fronts in August go. There won’t be much impact to temperatures, but evenings and mornings should feel somewhat drier. Instead of dew points of around 70 degrees, which is very sticky and muggy, dew points around sunrise and around sunset may be be about 10 degrees lower away from the immediate coast. A dew point of 60 degrees is definitely not fall-like, but it’s also definitely not “dog’s breath” weather like we normally get in the summer, either. Small victories, people.

See full post

As we enter the second half of August, deep tropics heating up

Over the last week a pair of non-consequential tropical systems have formed over the Atlantic—Tropical Storm Josephine, which is weakening at sea, and Kyle, which has already dissipated. However as a more favorable pattern for rising air moves into the deep Atlantic tropics we can expect to see storms firing up in the main development region between the west coast of Africa and the Caribbean Sea. This indicates we likely will see stronger hurricanes begin to develop in the coming weeks.

To that end, the National Hurricane Center has begun tracking two areas of interest that are moving generally westward across the Atlantic Ocean, toward the Caribbean Sea.

7am CT Sunday tropical outlook. (National Hurricane Center)

If we take a look at the satellite image this morning, we can see that both of these tropical waves are not yet close to becoming organized. And looking at some global model forecasts, neither of these are slam-dunk systems in the sense that they’re guaranteed to eventually develop into tropical storms or hurricanes.

Annotated satellite image from 8am CT Sunday. (NOAA)

However, it does seem likely that at least one of these systems, or another wave yet to move off Africa, will find the right conditions over the Atlantic, move into the Caribbean Sea, and eventually threaten the Gulf of Mexico. That is certainly what we’ll be watching for over the next few weeks. We’ve been telling you for awhile that the latter half of August and September will be likely busy in the tropics. Now, that time is at hand.

Heat continues, and a word on Hurricane Ike

Our forecast is going to be very hot, with heat advisories likely needed through the weekend. Before jumping into the details, such as they are, I wanted to say a word about Hurricane Ike.

We are, amazingly, coming up on the 12th anniversary of Hurricane Ike. If you don’t remember, the storm hit Houston fairly hard, but made landfall just far enough east of Galveston that the worst of its storm surge missed Galveston Bay. It represented an enormous wake-up call for the region in terms of vulnerability of coastal residents, as well as the Houston Ship Channel. Unfortunately, while we have studied the problem in depth, we have yet to commit to any major projects that would address the threat and mitigate surge. There are two main proposals: A Coastal Spine Project led by the U.S. Army Corps of Engineers and the General Land Office, and an astonishingly beautiful Galveston Bay Park that would protect the Houston Ship Channel from a 25-foot storm surge.

Visualization of park space that would exist on Galveston Bay Park. (SSPEED Center)

While we certainly realize that America and Texas have a lot of other problems to deal with at present, it is time to pick one, or both, of these projects to move forward with for the good of the greater Houston region. Otherwise, we may not get so lucky with the next large hurricane that makes landfall along the upper Texas coast.

Thursday

Houston’s high temperature hit 101 degrees on Wednesday at Bush Intercontinental Airport, and we can probably expect more of the same today with mostly sunny skies. The National Weather Service has issued a heat advisory for now through Friday evening, and in truth it probably will be extended through the weekend as high pressure continues to influence our weather. Southwest winds of 5 mph will provide very little cooling today. Nights will remain sticky and warm.

Heat Index temperatures will again be smoking hot on Thursday in the region. (Weather Bell)

Friday, Saturday, and Sunday

More. Of. The. Same. It’s probably worth mentioning that we could see a few isolated showers pop up during the afternoon, with daytime heating. I’d sure welcome one, but it seems a forlorn hope at this point.

Next week

The heat should back off somewhat by Tuesday, as some sort of weak cool front approaches the area. We still don’t have great confidence in how far this front will reach, but it should help to increase rain chances by Monday night or Tuesday, and then knock back daytime highs into the low- or mid-90s. We’d love to get some dry air to help with nighttime temperatures, but I’m not ready to bet on that yet.

Heat advisory issued for Houston area as temps near 100 degrees

Good morning. Temperatures will be hot enough today that the National Weather Service has issued a heat advisory for now through 7pm CT. This means the hot temperatures and humidity will combine to create a heat index of up to 110 degrees later today. We can probably expect more of the same for the remainder of the week as high pressure influences the region’s weather through the weekend. Some relief should come next week.

Wednesday will be a very hot day in Houston. (Pivotal Weather)

Wednesday

High temperatures today will likely reach near 100 degrees for inland areas, with lower-to-mid 90s along the coast. Expect mostly sunny skies, although there will be a slight chance of showers and thunderstorms later this afternoon. Winds will be light, at 5 to 10 mph out of the southwest. Our trend of warm nights will continue, with many areas south of Interstate 10 not falling below 80 degrees tonight.

Thursday and Friday

With conditions more or less the same for the remainder of the work week, I’d anticipate the National Weather Service extending heat advisories for both of these days.

Saturday and Sunday

We don’t really anticipate much change this weekend, either, with only slight—roughly 20 percent—rain chances both days. Otherwise skies should be partly to mostly sunny, with highs in the upper 90s to possible 100 degrees for inland areas. Overnight lows will provide scant relief.

The rain accumulation forecast for now through the weekend is near zero. Chances improve after that. (Pivotal Weather)

Next week

Things may get a little more interesting next week as high pressure backs off some. Rain chances may increase by Monday or so, perhaps into the 30 to 40 percent range. And I’m not ready to fully buy into this yet, but the models bring a front into Texas and push it toward Houston on Tuesday or Wednesday of next week. The jury is out on how far the front will push into Houston, and whether it will make it all the way to the coast. Typically this does not happen in August, but if it does we’ll see some pleasantly drier air. We’re not going to get crazy here, but instead of nighttime temperatures of around 80 degrees, they may drop into the lower 70s in the city. We’ll see.