Eric Berger

And … the heavy rains are back in Houston

With high pressure moving out of the area after nearly three weeks of dry weather, copious amounts of pent-up atmospheric moisture broke out into thunderstorms over parts of Houston today. A few areas west of downtown received 2 to 3 inches of rainfall. Admittedly, some of these storms were stronger than expected, as atmospheric moisture levels surged this afternoon.

This has prompted the Houston/Galveston office of the National Weather Service to issue an “areal flood advisory” for Monday evening, through 8:45pm CT for the following areas:

Flood advisory in effect through 8:45pm CT. (National Weather Service)

This is not a particularly high level of threat, but storms in the indicated areas could generate some minor flooding this evening. These storms should subside by or before sunset, with the loss of daytime heating.

A similar pattern is possible Tuesday, although at this time we don’t expect the storms to be quite so intense.

Some rain chances finally return to Houston, as tropics sizzle

For Houston, the first half of September has been quite pleasant—with average temperatures running about 4 degrees below normal thanks to an early season cold front. Alas, the second half of the month probably will end up a few degrees above normal, as it doesn’t look like we’ll see another cold front for another 10 to 12 days, at least. Rain chances also return to the area after a long break.

Monday

Today brings the region its best rain chances since Hurricane Harvey departed the area nearly three weeks ago as atmospheric moisture levels rise, and high pressure abates some. I don’t think this means more than scattered showers later today, but some areas could pick up a few tenths of an inch of rain. Highs in the low 90s.

Tuesday through Thursday

A more or less similar pattern continues with a moist atmosphere, and some moderate atmospheric disturbances pulsing through the area. This will lead to partly sunny days, with perhaps 40 to 50 percent of the area seeing light to moderate rain showers each day. Again, these are nothing to be concerned about from a flooding perspective, and area lawns and trees will be grateful. Highs around 90 degrees.

Most of Houston may see about one-half inch of rain, or so, through Saturday. (NOAA/Weather Bell)

Friday through the weekend

High pressure may build back near the area, but probably not right on top of Houston. This may scale back rain showers a bit, but a chance will remain as high temperatures remain consistent near 90 degrees. In other words, this week’s weather probably won’t change much through the weekend.

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Atlantic tropics still hot, but no immediate Gulf threats

Welcome to the weekend! Some rain chances will return to Houston later on Sunday, and most days next week. But it’s nothing we’re concerned about. In response to a number of questions about the tropics, however, we wanted to provide an update on all of the activity out there. We have a lot of it in the Atlantic.

As we get deeper into September, the Atlantic tropics remain active. (NOAA/Space City Weather)

Hurricane Jose

This storm, which has been waggling around the tropical Atlantic for days, finally is beginning to follow a track—and this track may eventually lead to some tropical effects for the East coast. Here’s a look at the European model ensemble forecast for the center of Jose on Wednesday morning, which shows a fairly large tropical storm or hurricane moving up the east coast, but offshore, early next week.

European model Hurricane Jose position forecast for Wednesday morning. (Weather Bell)

Most of the model guidance suggests the storm will turn northeast by around Tuesday or Wednesday, and this would keep the center away from Long Island and Boston, Mass. Right now for those locations I’d expect some gusty conditions and swells, but nothing too significant. Some areas of Boston and Cape Cod could see 2 to 4 inches of rain, but again, nothing too extreme.

If the track for Jose moves west and brings the center to shore, and the storm becomes stronger than forecast, its effects could become more concerning.

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Summer lite returns to Houston, and it will remain awhile

Nine years ago today, Hurricane Ike made landfall along the northern end of Galveston Island. Of a hurricane’s three major threats—damaging winds, storm surge, and inland flooding—Ike’s greatest damage came from its surge along the coast. In the nearly decade since then, we’ve done nothing to mitigate the problem of surge. It would be a great shame if we make the same mistake with regard to inland flooding after Hurricane Harvey.

An aerial photo of damage in Gilchrist, Texas, after Ike. (FEMA)

Now, onto the forecast.

Wednesday through Friday

Southerly winds are back, and with it comes increased humidity and warmer nights. Overnight lows this morning are nearly 10 degrees warmer than just 24 hours ago. We won’t see too much of a difference in high temperatures over the next several days, with the mercury climbing to about 90 degrees or so. But it will feel warmer, given the increased moisture and humidity. This is more typical weather for September.

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