textproduct: Houston/Galveston

KEY MESSAGES

- Gale Warning in effect for the Bays and Gulf through midday today. Winds and seas will be very hazardous for mariners.

- Warming conditions Sunday through Tuesday with highs in the 70s/80s.

- A dry line and cold front on Wednesday will bring showers/storms across the region, some strong storms and downpours possible.

DISCUSSION

Issued at 1204 AM CDT Sat May 2 2026

With the cold front off the coast, showers should diminish early this morning as cooler, drier air works its way into the region. Strong winds are anticipated across the coast early in the morning with Gale Warnings in effect for the bays and coastal waters. Temperatures will also be cool early in the day with lows in the upper 40s/lower 60s. Winds should slowly ease down through the afternoon as high pressure builds over the region. Skies will also clear, allowing highs to reach the the mid/lower 70s.

Sunday will start out fairly cool with early morning lows in the upper 40s/lower 50s inland and mid 50s/60s across the coast and Houston metro. Surface high pressure shifts east of the area during the daytime, causing winds across the area to shift east to southeasterly. A small shortwave is anticipated to push over the area early in the day, though the drier conditions, lower PWs and sfc high pressure still in the vicinity will make rain unlikely. A few higher clouds may develop, but otherwise conditions will be benign. Onshore flow will enable WAA over the next several days with highs on Sunday reaching the 70s/lower 80s.

Monday should start off a tad warmer early in the morning with lows in the 50s/60s inland and lower 70s along the coastline. Onshore flow will facilitate moisture return with PWs climbing to 1.0-1.4 inches throughout the day. This increase in moisture will result in larger cloud cover, though afternoon highs are forecasted to reach the upper 70s/mid 80s thanks to steady WAA. Some weak impulses embedded in NW flow aloft could bring a brief shower or two, though rain chances remain low for Monday.

Tuesday will be another warm and benign day weather wise. Lows in the morning will be warm, only dropping into the mid 60s/lower 70s with cloudy skies overhead. Cloud cover scatters out in the afternoon with highs forecasted to reach the upper 70s/upper 80s. Rain chances may be low now, but should be on the rise throughout the day as the next weather system approaches SE Texas.

On Wednesday, an upper level trough will sweep across the Rockies/Plains. Models are showing a dry line developing over central Texas with a stronger cold front further to the north. Timing these features so far out is a tad difficult given the uncertainty, but the combination of the dry line pushing in from the west and the cold front reinforcing/overtaking it from the north should help bring showers and thunderstorms throughout the day into the evening. Forecast models show deep moisture over the region with PWs for 1.5-2.0 inches with a 25-35 knot LLJ early in the day. Even though better forcing will keep north of our area, stronger storms and heavier downpours will still possible throughout Wednesday.

Cooler, drier and breezy weather develop on Thursday in the wake of the cold front. High pressure moves off to the east on Friday with winds shifting onshore during the afternoon, initiating a warming trend yet again.

03

AVIATION

(00Z TAF Issuance) Issued at 602 PM CDT Fri May 1 2026

Numerous SHRA continue across SE TX. Expect brief periods of 1-3SM visibilities in the heavier showers. The SHRA is expected to end from west to east in the 02-05Z time frame. One last band of heavier TSRA will impact KLBX/KGLS between 00Z and 02Z accompanied by wind gusts to 30 kts and reduced visibilities. Have only mentioned thunder in these TAFs. MVFR/IFR ceilings will persist overnight but skies are expected to clear out 10-15Z. North winds 15-25 kts are expected for the Houston terminals this evening and again Saturday morning. Will see frequent gusts to 30 kts at KGLS. Winds should decrease area wide late Saturday. 35

MARINE

Issued at 1204 AM CDT Sat May 2 2026

Showers will taper off early this morning. Strong northeast winds are expected early today, around 20 to 30 knots with gusts up to around 40 to 45 knots possible. Seas may reach 8 to 13 feet. A Gale warning remain in effect through this morning. Winds and seas should decrease in the afternoon and evening, though small craft advisories could be needed during this period if conditions are slow to improve. Light to moderate onshore winds return Sunday, increasing Monday night through mid week, likely prompting caution flags at times. Showers and storms as expected on Wednesday as the next cold front pushes through. Anticipate strong offshore winds with another period of potential small craft advisories.

03

HYDROLOGY

Issued at 115 PM CDT Fri May 1 2026

As far as the rivers go, rises to action stage are forecast but cannot entirely rule out isolated instances of minor flood stage depending on where the most rainfall accumulates. Remember that you can monitor updated river forecasts via the NWS NWPS webpage (https://water.noaa.gov/) and as always do not drive through any flooded roadways. Turn Around, Don't Drown.

KLG

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 74 50 78 56 / 0 0 0 0 Houston (IAH) 75 55 80 60 / 0 0 0 0 Galveston (GLS) 76 67 77 70 / 0 0 0 0

HGX WATCHES/WARNINGS/ADVISORIES

TX...None. GM...Gale Warning until 1 PM CDT this afternoon for GMZ330-335-350- 355-370-375.