Apologies for the late (or early) post, but given the situation across the area tonight, I felt we needed to update.
We’ve got two main issues of concern: Tornadoes and flooding.
The tornado threat has flared up and down since this afternoon. None have looked especially menacing, but at a couple points we did observe tornadic debris signatures; once this afternoon just northeast of IAH Airport, the other with the late evening storms near the Beltway and I-10 west of Houston.
The tornado threat has lulled now, but just be aware that another storm or two could produce isolated, brief tornadoes. I believe that threat has peaked, but still have a way to get warnings if possible overnight.
A possible tornadic debris signature (TDS), indicating lofted debris from a tornado was noted on radar this evening (upper panel) just inside the Beltway north of I-10. (RadarScope)
As far as flooding goes, there is serious street flooding west of Houston, particularly from around Westpark & Highway 6 through I-10 and the Beltway northeast to near Greenspoint. Rainfall was at one point coming down at over 4 inches in an hour between Briarforest and Spring Branch. Please stay off the roads west of Houston, as that will take time to drain.
Rain totals have been widely variable, but 4-6″ has fallen west of Houston and also well northeast toward Liberty County since Saturday. (Harris County Flood Control)
The Spring Branch area may also see creeks and drainage out of banks for a time before it subsides.
From here, we should see support for storms begin to fade. The rain will become more sporadic and intermittent, easier for drainage to keep up with. Through about 3 AM, however is when things will be the most dicey. Look for deteriorating road conditions up north between Aldine and IAH into Kingwood as well, but the hope would be that rain rates would be less than what we observed in Spring Branch.
Most of this will be done by morning, and while there is a continued chance of showers or storms tomorrow, they should not be this significant or severe. We’ll update you later tomorrow morning. Hope you’re able to get some sleep tonight.
While we’ve been discussing periodic cold fronts, record warm Decembers, and everything else over the last month or so, we have been quietly amassing a rainfall deficit in the Houston area. Since November 1st, Houston has officially seen just under 6 inches of rainfall, about 5.96″ to be exact. Normally over that span we would have received roughly 8.5 inches of rain. The last 30 days in particular have been pretty rough all across Texas with a handful of localized exceptions.
Rainfall in the 30 previous days (as of Wednesday) was running about 50 percent of normal in Houston but worse over much of Texas. (High Plains Regional Climate Center)
We’ve received about half our normal rainfall over the last month, and other parts of Texas are seeing it even worse. Yesterday’s Drought Monitor placed parts of the Houston region into drought for the first time in quite some time. That’s why this weekend may seem a little out of place with our recent stretch of weather, as there will be bonafide rain chances for most of the area. However, because of the scattered nature of the rain this weekend, many of you seeking some water will be left thirsty once more. There are more rain chances in the forecast after this weekend, however.
Today
There shall be no rain for today, however. Most areas should see sun to start today, but look for clouds to try and build in from the south this morning and afternoon. The chilly morning and some clouds will limit how warm we get today, with highs likely only in the mid or upper-50s.
Saturday
For those of you trying to make outdoor plans for this weekend, basically, you’re going to have live with at least the chance of showers and storms all weekend. It’s unlikely to rain more than a few hours at a time in any given location, but trying to time exactly where and when it rains will be somewhat difficult in this setup.
For Saturday, I would expect to see showers and storms develop around sunrise southwest of Houston, toward Matagorda Bay or out along US-59 toward Victoria and Wharton. Those storms would spread north and east through the morning and into the afternoon. Not everyone will see rain all day on Saturday, and there’s a chance some folks may not see much rain at all. But for those that do see rain, it could be heavy, as the amount of moisture in the atmosphere this weekend will be near record levels for early January.
Anywhere you see blue or green on the map above indicates above normal to much above normal amounts of moisture in the atmosphere. Localized heavy downpours will be possible Saturday into Sunday. (Pivotal Weather)
So, localized street flooding is a definite possibility for those that see more persistent showers on Saturday.
In addition to the rain, severe weather is a possibility. While we are not expecting a significant severe weather outbreak, the atmosphere will be capable of allowing storms to briefly rotate on Saturday, which could lead to a couple tornado warnings in the area.
There will be a marginal (1/5) risk of severe weather tomorrow, primarily due to a brief, lower-end tornado threat from a few storms. Widespread severe weather is not expected. (NOAA)
The Storm Prediction Center has us in a “marginal” risk for severe weather, or level 1 of 5 on Saturday. I don’t want you to worry too much about this, but just be aware of the chance and stay plugged in this weekend.
Outside of the rain, look for lots of clouds and skyrocketing humidity. It will feel quite warm and humid by Saturday afternoon, with highs well into the 70s and overnight lows barely budging just under 70 degrees.
There is a definite signal in the models that we could see showers and storms persist or even expand on Saturday night into early Sunday morning, so that’s something to be aware of as well.
Sunday
Modeling is all over the place on details for Sunday’s outlook but the story should be: A healthy chance of storms in the morning, followed by a cold front sometime Sunday afternoon or evening. Once again, heavy rain is possible in spots before this all slides to our east in the afternoon. In general, expect decreasing rain chances from about midday onward.
Expect a half-inch to an inch on average across the region, meaning some places will see more than that, while others could see a good bit less. The best odds of higher rain totals are along and south or east of US-59. (Pivotal Weather)
Once all is said and done, we should expect some places to see as much as 2 to 3 inches of rain or even a bit more, an average of about a half-inch to inch across the area, and, yes, certainly some folks that see less than that. It will be quite variable.
Sunday’s high temperatures could approach 80 degrees depending on how exactly things play out. This would be our first shot at 80 since way back on New Year’s Day.
Next week
Behind Sunday’s front, look for a return to more “Houston-winter” type weather. Morning lows on Monday should be in the 40s and low-50s, warm to near 60, and then drop into the 40s and 30s on Monday night. Expect another cool day Tuesday with highs only in the 50s and nighttime temperatures back into the 40s again. We will likely see another warming trend with more moisture back in the picture later next week. With that comes rain chances, but details are uncertain this far out.
As Eric has alluded to this week, I too am fairly optimistic that the next front should pass before next Sunday’s Houston Marathon. A lot can change between now and then, but if you’re looking for minimal humidity, you are setup nicely right now. I would anticipate race temperatures mostly in the 40s based on the current model scenarios, but again, it’s still a bit too soon to get too specific. Stay tuned!
Through yesterday, the average temperature in Houston (Bush) is 67.5° for the month of December. Adding an expected 83 and, call it 68 today gets us to 67.8° for the month, shattering the record from 1933 by 3.4 degrees. This will also be the widest gap between warmest and second warmest of any month in Houston. Only August comes close, where the difference between the horrific August of 2011 and 2010 was 2.7 degrees. Basically, this December was Houston’s most anomalous warm month on record. There are a number of other stats and nuggets we could share, but we may save that for a separate post. Our spring fling is almost over though, and it’s time to break out the winter clothes.
Today
More of the same. 80s, sun, clouds, some fog this morning. Today’s record high in Houston is 82°, set back in 1974, and that seems likely to be tied or exceeded. The main difference between yesterday and today will probably be that coastal sea fog. Winds may kick up just enough today to dissipate most of it by afternoon. Look for haze and/or mist at times, however.
Saturday morning & early afternoon
Tomorrow will begin like most other days this month: Warm and humid. Look for temperatures at or above 70 degrees to start the day. It will be quite warm through the afternoon with highs pushing back into the 80s again. The 2006 New Year’s Day record of 81° seems destined to be broken.
Saturday late afternoon into Sunday
Our change in seasons will arrive in two pieces. The first will be a cold front on Saturday afternoon. This front will come through and shift winds from onshore to offshore. Onshore winds may actually be a bit stronger ahead of the front, so look for calmer conditions once the front is through. Temperatures may drop off just a few degrees. Additionally, there could be a shower or two but nothing serious.
The second piece will arrive Saturday night. Look for that to hit the northwest suburbs before Midnight and the city and southeast suburbs and coast around Midnight. There won’t be any mistaking this one.
The temperature forecast around or just before midnight will show mid-60s ahead of the front and plummeting temperatures into the 40s behind it, with even some 30s well off to the north and west. (Pivotal Weather)
Temperatures will quickly drop from the 60s into the 40s and winds will kick up out of the north, gusting 25 to 30 mph or even a bit stronger at times. By Sunday morning, temperatures will have fallen into the 30s in most spots, with freezing temperatures north and west of Houston and even some upper-20s possible near Huntsville.
Sunday morning low temperatures will be near freezing or a few degrees below north and west of Houston, with 30s elsewhere. (Pivotal Weather)
For those of you heading off to services or for a walk on Sunday morning, temperatures will be 30 to 40 degrees colder than they were on Saturday morning, and with wind chill values in the 20s, it will feel 50 degrees colder. Bundle up! The day itself should be fine, just windy and cold with highs in the mid-40s.
Monday
Temperatures will drop steadily on Sunday night, and we should see much of the area, save for maybe the city and immediate coast reach the freezing mark by Monday morning.
Morning lows on Monday will be near freezing or slightly below everywhere except probably inside the 610 Loop and along the beach. (Pivotal Weather)
This will be a pretty standard freeze for the Houston area, the type we usually see several times a winter. Sensitive plants should be protected, particularly outside the city. If you have a sprinkler system, it’s probably also a good idea to have it shut off and drained. Typical winter preps. But as far as significant problems, we shouldn’t see any.
The rest of Monday will offer a transition back to onshore winds and temperatures bouncing back into the 50s. A freeze is unlikely Monday night anywhere in our area. This will be a quick shot of cold.
Rest of next week
Warmer weather will really be noticeable by Tuesday with temperatures warming well into the 60s. On Wednesday we warm into the 70s again. By Thursday or Friday, another, potentially much weaker front is likely to push into the area to cool us back a few degrees. Model guidance suggests another significant warm-up into next weekend before perhaps more sustained seasonably cool weather for the second week of 2022.
Final word
I just want to echo Eric’s sentiment from yesterday. It’s been a great year for us, between, among other things, launching an app, launching a Spanish language site and bringing Maria on board, being honored by the city of Houston, and arguing with each other about whether September or August is worse.
But we recognize that it’s been another rough year for a lot of folks. I am grateful for the doctors and nurses and medical research community that makes Houston a true global hub for medical research and care. Essential workers, restaurant employees, and so many others who have toiled through sickness, closures, and just mean people, thank you as well. My hope is that 2022 will offer a return to stability, both in life and weather. I’m more hopeful for the former than the latter, but either way, we’ll be here for you. Thanks for relying on us as a source of weather information to keep you and your family prepared and informed. It’s a duty and responsibility we take seriously, and we look forward to continuing doing so in 2022, which hopefully marks a return to somewhat more precedented times. Happy New Year!
If the National Weather Service forecast for the next 7 days for Bush Airport comes to fruition, it will be the second warmest 7-day period of weather during the winter months (December-February) on record for the city of Houston, exceeded only by a stretch in late February 1996. The forecast 74° average temperature over the next week would beat the previous December 24-30 record from 2016 by four full degrees. Basically, we’re heading into unprecedented territory for late December. The 5 day temperature anomaly forecast for the US and Canada is quite extreme. As warm as it is here is almost as cold as it’s going to be in, say, Calgary or Edmonton.
Parts of Texas through the Ohio Valley will average 20 to 25°F above normal over the next 5 days. Note: The above map is in °C. (Tropical Tidbits)
So, the forecast for Houston is pretty straightforward: Warm.
Today
You should be clear if you’re traveling anywhere today. Look for a mix of sun and clouds. It will be noticeably breezy today, with a steady south wind around 10 to 15 mph, a bit stronger over the water. Today’s record highs for Bush and Hobby are both 82°, set in different years (1955 and 1948 respectively). We’ll at least make an attempt to get there.
Christmas Day
I’m guessing Santa may tell his reindeer to come back to the Houston area when they wrap up their work on Christmas Eve, because tomorrow’s weather would warm the heart of anyone living at the North Pole. Look for more of the same: Sun, some clouds, a breeze, and temps warming from the 60s into the 80s. Santa can park himself somewhere on the Island and down a taco and margarita, or two.
Christmas Day will feel more like Halloween this year, as we approach the record of 83° in Houston. (Weather Bell)
The number to beat in Galveston is 76, and 83 is the record in Houston at both Hobby and Bush tomorrow. I think Galveston’s record will fall. Houston will be close, but given how this month has played out, I think we’ll have our warmest Christmas on record. We’ll see.
Sunday & Monday
See above. Maybe Santa can extend his stay. Hit up Kemah? The Texans are home this weekend. Maybe the roof will be open, though it might be too warm for that.
Rest of next week
So, let’s get serious for a second: When is the next cold front? Model support for one doesn’t real increase until next weekend as it stands right now. So for those of you who actually like colder season weather, I sincerely apologize. For those of you that love this, it’s your time to shine. Look for more 60s by night and 80s by day through Friday, possibly Saturday as well. Shower chances creep back in, but the models are quite unenthused about how much rain may occur through next Thursday or Friday.
Rainfall over the next week looks unimpressive. While shower chances will gradually enter the forecast, anything we see would probably be quite isolated. (Pivotal Weather)
Low clouds and fog should also return next week. But through Friday, I see nothing too noteworthy in terms of weather impacts outside of occasional fog and warm temperatures.
We’ll have more on Monday. Meanwhile, I’ll echo Eric’s sentiments from yesterday. I hope you have a wonderful, safe, and most importantly, healthy Christmas and holiday season. We are, as always, grateful and thankful for your support. Stay cool this weekend.
