Storms late tonight as a cold front pushes through, followed by two days of pretty great weather

Good morning. The main event for our near-term weather is the arrival of a cold front late tonight that will bring a line of storms through our area early Wednesday, likely reaching the metro area shortly before sunrise. This front will usher in some briefly drier air, with Thursday looking especially spring-like with morning lows possibly in the low 60s. Memorial Day weekend looks warm and sunny.

Tuesday

Yesterday I talked about the potential for an upper-level system to bring some showers and thunderstorms into the metro area on Tuesday morning, but noted that all of the ingredients might not come together for the showers to hit Houston. Well, they haven’t, and the bulk of the rain will remain offshore today. Accordingly rain chances are only about 50 percent today, and any scattered showers that move through should do so fairly quickly from southwest to northeast. Otherwise, expect mostly cloudy skies today with highs in the mid-80s. Winds may gust as high as 20 mph out of the south.

Tuesday night and Wednesday

I’m more confident in the arrival of a cold front tonight, likely reaching the College Station and Conroe areas around midnight, pushing into central Houston around 2 to 4 am CT, and off the coast by sunrise. A line of storms will accompany the front, bringing thunderstorms, straight-line winds, hail, and even the potential for a tornado or two.

HRRR model depiction of a line of storms approaching Houston at 2 am CT on Wednesday. (Weather Bell)

I expect that some of these thunderstorms will bring heavy rainfall, and overall accumulations will probably range from 1 to 3 inches for most of the metro region, with higher isolated totals. While the bulk of the rainfall should have passed by around sunrise on Wednesday, some light to moderate showers may linger into the late morning hours. High temperatures on Wednesday should top out in the upper 70s as skies probably won’t start to clear until Wednesday evening.

Thursday

This is going to be a pretty amazing spring-like day in Houston, especially for late May. Lows will start out at 60 to 65 degrees, and despite sunny skies we’re going to see temperatures likely top out in the mid-80s. With dewpoints in the low 60s, the air will also feel reasonably dry. The evening should be pretty great as well, with some drier air holding on and temperatures dropping. Lows on Thursday night should eventually fall into the mid-60s.

Low temperatures on Thursday morning will be pretty incredible. (Weather Bell)

Friday

This will be a transition day back to more summer-like weather, but there still should be a smidge of drier air, with highs in the upper 80s, sunny skies, and overnight lows dropping to around 70 degrees.

Memorial Day Weekend

The forecast over the weekend will bring three days of sunny skies, highs around 90 degrees, and lows in the 70s. It will be plenty humid outside, but not boiling hot as this holiday weekend can sometimes be. Conditions should be perfect for outdoor activities, although please be sure and protect yourself during prolonged exposure to the sun.

Next week we’ll be monitoring the potential for a tropical disturbance to form in the Bay of Campeche, in the far southern Gulf of Mexico. This may eventually bring some moderate rainfall our way next week, but right now it’s not something to be concerned about at all.

A rare, late spring front arrives this week to bring some storms, and then rather nice weather

After a summer-like pattern took hold of our region for nearly all of the Month of May, change came early on Sunday morning with the arrival of a front and a good soaking. To give you an idea of how abnormal our weather was in May, consider this statistic from the National Weather Service about Galveston’s heat. Sunday’s low temperature in Galveston was 72 degrees, by far the lowest of the month. Before Sunday, the monthly average low was 78.6 degrees, which smashed the previous highest average for the May 1 to 21 period. Previously, 2003 had the warmest average low temperature, 75.4 degrees during the first three weeks of May. Galveston’s weather records date to 1875, so that’s nearly 150 years of data. This type of warmer weather is consistent with what we would expect to see due to climate change.

Fortunately, the rest of the month should be much more temperate.

Monday

In the wake of Sunday’s front, temperatures today should generally reach the upper 80s beneath mostly sunny skies this afternoon. Rain chances are less than 10 percent, and winds will be moderate, out of the north at 5 to 10 mph. Lows tonight will drop into the low-70s for most locations. In other words, conditions will be pretty darn nice for late May.

HRRR model forecast for radar reflectivity at 5 am Tuesday. Subject to major changes! (Weather Bell)

Tuesday

There is the potential for heavy rain on Tuesday as an upper-level system moves through, but I’m not certain all of the ingredients are going to come together. We’ll be watching for a line of storms to develop in central Texas late on Monday night, and then move through our area from southwest to northeast. The timing is a bit uncertain, so these storms could reach us by around sunrise or a bit later. If the storms come later, they probably will be stronger, as they would benefit from daytime heating. Otherwise, skies should be mostly cloudy on Tuesday, with highs in the mid-80s. Rain chances will drop off during the evening and overnight hours.

Wednesday

Yet another “cold” front is on track to push through the region on Wednesday. In terms of timing, we’re probably looking at a passage during the afternoon hours through Houston, and again there will be the potential for some heavy rainfall as this system moves through, this time from north to south. Some of these storms could be severe, so most of the Houston area faces a “slight” chance of severe weather, according to NOAA.

Severe weather outlook for Wednesday. (NOAA)

Total rainfall amounts through Wednesday should vary widely, with accumulations generally of 1 to 3 inches, with the potential for higher localized amounts. Honest-to-goodness drier air should work its way in behind the front, ending showers and thunderstorms by Wednesday evening. Daytime highs should be in the 80s, with lows dropping into the 60s overnight.

Thursday and Friday

These should be splendid, late-spring days with highs in the mid- to upper-80s, sunny skies, and slightly drier air. Lows on Thursday night should drop into the mid-60s for much of the region, while Friday evening will be a touch warmer. My pick of the week will be Thursday evening, when I expect very pleasant conditions out of doors. Enjoy this spring fling!

Low temperature forecast for Friday morning. (Weather Bell)

Memorial Day Weekend

The holiday weekend will see warmer weather with mostly sunny skies. Highs through Monday should be around 90 degrees, or in the low 90s at the warmest. Dewpoints will be rising, but not to oppressive levels. Rain chances look to be near zero until Tuesday or Wednesday of next week.

Storms possible late tonight as a front sags into Houston

Hi all. Just a short weekend update to note the potential for some reasonably strong thunderstorms late tonight as a cold front pushes into the region. Today will be hot and mostly sunny, with highs in the low- to mid-90s. Winds will be gusty out of the south, so it will be pretty much business as usual in terms of our recent weather. But conditions will begin to change tonight with a significant pattern change.

Saturday night

It looks like a (probably broken) line of storms will reach College Station around midnight, and then trudge down toward the coast by around sunrise. Probably the major threat is briefly strong straight-line winds, with the secondary potential for small hail. In terms of rainfall, accumulations will probably vary from a sprinkling to 1 inch or more of rain, with greater accumulations likely along and north of Interstate 10.

HRRR model radar reflectivity for 4 am CT on Sunday. (Weather Bell)

Sunday

There may be a lull in shower activity on Sunday morning before the potential for some on-and-off showers returns on Sunday afternoon. Highs should reach the mid- to upper-80s. Rain chances will fall back Sunday night.

Next week

A healthy chance of rain returns Monday night and then may stay with us through Wednesday night as a series of disturbances moves through, culminating in a slightly stronger cold front on Wednesday night or some time Thursday. Rain accumulations for most should be 2 to 4 inches for now through next Thursday, which is welcome. And if we end up with a night or two in the 60s late next week, that will just be a huge bonus.

We’ll have a full post up Monday morning, as usual.

Houston’s May blowtorch should begin to extinguish some this weekend

Averaging the temperature recorded in Houston (at Bush Airport) from May 1 through yesterday would give us the hottest front 19 days of May on record back to the 1890s. It’s probably not terribly surprising. We will begin to see things change this weekend, however, and it can’t come soon enough.

While the drought situation has held stable in the Houston area, across Texas, it continues to worsen. Almost 30 percent of the state is classified as being in “exceptional” drought, level 4 of 4. (NOAA)

The drought situation has not changed much in the Houston area since last week. We still see extreme drought creeping in across Wharton, Matagorda, and Brazoria Counties. It’s really the entire state of Texas that needs some help right now. Almost 30 percent of the state is classified as being in “exceptional” drought, the most coverage of that classification since early 2012, as we were coming out of the 2011 drought.

Our chance for help both locally and statewide is about to kick into gear. But it’s a bit of a tenuous story. I’ve been watching this wet pattern closely, and we started to see the European ensemble model backpedal a bit yesterday, taking us from about 2″ above normal the next 10 days or so down to 1″ above normal. While that may not sound like a huge change, this will go a long way toward relaxing drought, and any cutting back on that would not be great news. So, fingers crossed that the next week or so performs.

Today

The weather remains on autopilot for one more day: Sun, clouds, high humidity, and temperatures in the 90s. Winds will be up a bit today compared to recent days, with some 15 to 25 mph gusts possible. Perhaps that will help make it a bit less painful.

The wind will be a little gustier today than it has been this week, as slightly stronger onshore flow kicks into gear. (Pivotal Weather)

Most of us should stay dry, but perhaps a stray shower or storm could impact areas west of Houston later this afternoon.

Saturday

We should not see any significant weather changes tomorrow, but we may notice a few additional clouds. It should not be much cooler. In fact, with a cold front moving into Texas on Saturday but coming up short of Houston, that may actually allow for a little additional onshore flow or “compressional heating” ahead of the front, which could allow us to squeeze an extra degree or two out of the air tomorrow. Shower chances look minimal during the daylight hours right now. There may be a slightly better chance at storms tomorrow night, especially north of I-10.

Sunday

The big changes should really kick in on Sunday. The front will likely come up just short of Houston, but it will be close enough to the area to allow for numerous showers and storms to develop through the day on Sunday. Timing exactly where and when these will hit your backyard is impossible to do right now, but we believe most areas will see at least some rain at least once or twice on Sunday. And with a very, very humid air mass in place, any rain that does fall could be heavy, so keep alert for some localized street flooding if you’ll be out and about.

With rain and clouds, look for upper-80s or low-90s Sunday at best.

Monday & Tuesday

Weather modeling seems to agree that Monday may be a bit of a “down” day in terms of rain chances. So we may just see a few showers around with a mix of clouds and some sun. Look for highs in the upper-80s.

Tuesday should see another disturbance or two swing into the area, and that means that rain chances will probably trend up for that day. Look for scattered to numerous showers and storms with highs in the mid-80s. Again, any rain could be heavy.

The current forecast calls for a general 1 to 3 inches of rain through Wednesday. Some areas will likely see more than that, while a few others may see under an inch. (Pivotal Weather)

How much rain through Wednesday morning? There will be a very wide variability with some places seeing an inch or less and others likely seeing 2 or 3 inches or even more. Consider this map an average, but you can clearly see we’re expecting a good bit of beneficial rain through Tuesday.

One other quick note: An early season Saharan dust cloud will work into our area on Tuesday into Wednesday, so you may see a hazier, dirtier looking sky in between storms. This isn’t uncommon in early summer, but it is a bit early for a dust event of this magnitude based on my experience. I would not read into it meaning anything in particular, however, as I don’t believe there’s any established correlation between early season dust and the upcoming hurricane season.

Later next week

Questions begin to arise later next week as to whether we can keep this wetter pattern going with daily shower and storm chances, or if things dial back a bit. Based on the latest data, I would expect a healthy chance of rain again on Wednesday before storm chances diminish a good bit on Thursday and Friday.

Memorial Weekend looks pretty good right now. Lower-end rain chances may build back in on Sunday or Monday, but as of now, it’s nothing too serious. We’ll keep tabs on it, but at this point, I would say at least 60 percent of the weekend looks great. It will be hot and humid, of course, with highs likely around 90 or a bit hotter. More next week!