Matt Lanza

In brief: Thunderstorms impacting the Dallas-Fort Worth Metroplex and Abilene may hold together overnight and arrive in Houston near sunrise, bringing thunder, lightning, and locally heavy rain to parts of the area.

We’re barging into your Sunday evening briefly to just offer a heads up that thunderstorms may arrive in the Houston area on Monday morning. In North Texas, there’s a pretty potent severe weather risk tonight. We’ve seen gigantic hail in the area between the Caprock and the Metroplex. Those storms are now kind of congealing into a complex of thunderstorms that will continue to arc east and southeast, possibly arriving in Southeast Texas by Monday morning.

While we are not under severe weather risk tonight, there is a marginal risk posted for Monday (level 1/5) for Houston. These storms could hold together a bit as they approach. While we do not expect gigantic hail or extreme winds like they’ve seen in some spots up north, we could see some frequent lightning, gusty winds, and heavy downpours.

The HRRR model depicted above shows storms arriving right around 6 AM before dissipating by 8-9 AM. Don’t focus on specifics but rather the overall picture which shows a gradually weakening line of storms moving in. The most likely area to see organized thunderstorms is north of I-10 and west of I-45, but it’s possible that many of us see at least some rain or thunder by mid-morning Monday. Conditions would then calm down a bit Monday afternoon.

Bottom line: Don’t be shocked if you’ve got kids or pets running in a little before wake-up time tomorrow. We’d currently rate this about a 6 out of 10 on the excitable dog scale, with perhaps some higher values up toward Navasota or Huntsville or Conroe.

Eric will have more in the morning.

In brief: Saharan dust will give the Houston area a hazy sky this weekend, but it will also heat up too. Look for mid to upper-90s and very uncomfortable conditions. Next week sees a cooldown as rain chances return Monday and especially Tuesday, which could be a rather stormy day.

Today and Saturday

First off, welcome back to the Saharan dust that periodically impacts our region in June and July. You’ll notice it via some haze or kind of a milky appearance to the sky when clear. It will probably impact air quality to an extent as well, though most of the dust is suspended aloft. Couple that with building high pressure and you have a truly acrid pair of summer days here. As bad as August is here, some of these June days with high heat and haze can top the charts for most miserable of summer. Expect highs in the mid-90s, with a couple spots in the upper-90s perhaps on Saturday.

Rain chances look minor but not quite zero. Yesterday saw a couple small areas pick up 1 inch or more (Friendswood and between Rosharon and Angleton as examples), and that’s entirely possible today or tomorrow. But most likely, you’ll just stay hot and dry.

Sunday

We’ll close the weekend with close to the hottest weather so far this year, as highs will try to push into the mid to upper-90s. I think that the Saharan dust this weekend may be just enough to keep us more mid-90s than upper-90s. Whatever the case, it’s going to feel close to 105 degrees at times when you factor in the humidity.

So, yes, for the early season this is some excessive heat. Take it easy, as we’re not yet fully adapted to these sorts of temperatures. Normally we’re just above 90 degrees in early June, not above 95 degrees. So it’s hotter than it usually is for this time of summer. Again, a stray shower is possible.

Another note, morning lows are also going to be quite uncomfortable this weekend with upper 70s to around 80 or better near the coast. We’ve been routinely seeing morning lows this week in the 80s on parts of Galveston Island through San Luis Pass down to Surfside. Some parts of inner loop Houston may also struggle to get below 80 degrees at times this weekend.

Monday

We’ll start next week in a transition. The ridge over Texas will reorient into the West, while a deep trough carves itself out in the Great Lakes. This means a return to showers and thunderstorms in Texas. On Monday, we may still be a bit sparse in coverage with the rain, but chances definitely step up from Sunday. This will knock us back into the low or mid-90s for highs.

Tuesday and beyond

Tuesday may be a very unsettled day with strong thunderstorms and heavy rainfall. It’s still a bit too early to get too into the weeds on timing or how the storms will evolve, but this day has been flagged since early in the week as a potentially stormy one. Plan accordingly.

Rain totals may reach 1 to 3 inches in much of the area depending on exactly how things evolve. But there will be some risk for higher totals as well in localized spots. We’ll track how this evolves over the weekend and report back Monday. High temps may struggle to hit 90 on Tuesday.

The coverage of rain may back down after Tuesday but rain chances will remain fairly elevated through Wednesday and Thursday.

In brief: A cluster of non-severe storms will impact southern parts of the Houston area primarily this morning. A few additional storms could fire, especially east of I-45 or at the coast later today. We’re also keeping tabs on a chance of storms Sunday, followed by standard June fare next week.

Today

Another active radar this morning. It feels like it’s been this way a few times this week! Anyway, there is a complex of non-severe thunderstorms moving into the Sealy and Prairie View areas now. That will head into the rest of the Houston area, especially along and south of I-10 over the next few hours.

At this point, the storms are not severe, but they are producing heavy rain and lightning. Especially the southern part of the line, which is pushing through Shiner and moving toward El Campo. But other than the aforementioned rain and lightning, we don’t think these storms will cause significant problems.

What happens next? Models suggest this cluster of storms will weaken further as it approaches Houston. On the periphery, new storms may develop heading into afternoon. One or two of those storms could be on the stronger side, especially east of I-45 or along the coast. Outside of thunderstorms, expect some cloud cover at times. It’ll be warm with highs in the upper-80s.

Weekend

Tomorrow looks like it *may* be the quieter of the two weekend days. Expect an isolated shower or storm, but in general, the weather may behave much like we saw yesterday, where it’s mostly sun and clouds. Highs will be in the upper-80s to near 90 degrees.

Sunday is mildly more interesting. Models have been pretty consistent since yesterday in showing at least some kind of line of storms dropping in from the north during the late morning or afternoon. I don’t think that’ll be a big deal, but if you have outdoor plans Sunday just keep an eye on things. Otherwise, expect highs in the low-90s.

Humidity this weekend will be (relatively) lower compared to where it has been, allowing morning lows to dip into the 60s in a couple spots and low-70s away from the coast.

Next week

We should settle into a very June-like pattern next week. There will be a handful of shower chances sprinkled in through the week, but no one day looks worse than the others right now. Most days should be partly to mostly sunny. High temperatures will be in the low-90s, with low temperatures in the mid to upper-70s. The odds of mid-90s will increase later in the week.

In brief: Scattered to numerous storms will impact the Houston area once more today. Severe risks, while low are not zero. We’ll remain unsettled heading into the late week and weekend but hopefully at a less intense pace than we’ve started the week with. Hotter weather lurks on the horizon.

[UPDATE: We’re pulling the trigger on Stage 1 Flood Alert. See the details at the bottom of the post.]

Today

After things calmed down yesterday, they stayed calm, thankfully. We will not have that luxury today. Storms (non-severe) are already moving across Matagorda County and Wharton County this morning.

There are also a couple isolated storms just west of Downtown. Over the next few hours, the activity near Matagorda Bay will slide across Brazoria and Galveston Counties. Some of those storms could be strong to severe with gusty winds. Lightning and heavy rain are a given with these storms as well. Elsewhere, scattered storms will pop across the rest of the area today. While we don’t expect significant severe weather, we cannot rule out isolated severe storms. Gusty winds are the main concern today.

It’s possible we see an additional cluster of storms develop with daytime heating out near College Station and the Brazos Valley. Those could swing through in the evening hours. Again, the primary concern would be isolated gusty wind as that happens.

Also keep an eye out for heavy rainfall. These storms are putting down close to 2 inch per hour rainfall rates. This could cause some street flooding to crop up in spots. Nothing too, too serious but just be mindful in typically flood-prone spots. Temperatures will be held back in the 80s today.

Thursday through Sunday

We may venture back to a somewhat less widespread coverage of storm chances here, with more sea breeze driven daily thunderstorms. Those tend to be less intense but can produce locally heavy rainfall. So all days should see the potential for a little street flooding in isolated spots. Many places would end up without much rain. One or two storms could be strong.

That said, we will want to keep tabs on what happens out in western Texas. We’ll be in a northwest flow aloft, as winds 20,000 feet up move from northwest to southeast across Texas. If any sort of complexes of storms can develop out west, they could end up nearby eventually. Models don’t do a great job predicting those features more than 18-36 hours out, so there’s certainly a tinge of uncertainty in the forecast. So with all that in mind, we don’t currently expect widespread storms but we’ll be babysitting the situation through the week.

Temperatures look to top out in the upper-80s on days with rain and low-90s on days without. Morning lows should generally be in the 70s.

Next week

A return to drier, hotter weather seems likely next week. High pressure may try to anchor over the Southeast or Gulf, which would keep Southeast Texas at least at the periphery of hot weather, with temperatures likely starting the week in the low 90s and moving upward from there.

Mid-90s will probably return at some point. Stay tuned.

Update: Storms this morning are producing localized torrential downpours with rates of 2-4 inches per hour that will cause heavy ponding and some street flooding in spots. As as result, we’re pulling the trigger on a Stage 1 alert on our Flood Scale.