Brownsville/Rio Grande Valley, TX

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New: Preliminary Damage Survey Of Harlingen To Laureles Texas Microburst Event On May 9, 2026
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New: The 2026 Rio Grande Valley/Deep South Texas Hurricane Guide is Here!
Nuevo: Guia de Huracanes 2026 del Valle del Rio Grande/Extremo Sur de Texas es Aqui!
New: May-July 2026 Outlook: Hotter than normal temperatures are favored to continue into the upcoming summer season; precipitation remains a toss-up; drought, heat risk increases, occasional heavy rain/flooding, & water supply issues remain in focus

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Last Map Update: Fri, May 22, 2026 at 9:04:16 am CDT

Watches, Warnings & Advisories

National Weather Service Corpus Christi, TX

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Flood Watch

Flood Watch in Effect through Monday Morning

Heavy Rainfall And Flooding Possible This Weekend

Strong to Severe Thunderstorms Possible Saturday

Beachcast

5-Day Outlook

Today

3 to 6 inches of rainfall have already fallen over portions of Deep South Texas over the past 48 hours. Additional rainfall is expected through the weekend. Due to the soil already being saturated, there could be areas of isolated to scattered flash flooding in areas that receive heavier rainfall.

Scattered flash flooding is possible on Saturday across Deep South Texas as the entire area is under a Slight Risk (Level 2 of 4) for excessive rainfall. Meanwhile, on Sunday, there is a Marginal of Isolated Risk (Level 1 of 4) for excessive rainfall for areas east of IH-69C/US-281. High atmospheric moisture content combined with multiple showers and thunderstorms tracking over an already saturated ground could lead to instances of flash flooding over the weekend, especially Saturday. Rainfall rates will be key!

As our active weather pattern looks to resume over the weekend, strong to severe thunderstorms will be possible on Saturday. The best timing for thunderstorm development will be between Saturday afternoon through Saturday night. The greatest coverage looks to be Saturday evening/night. All of Deep South Texas and the Rio Grande Valley are under a Slight Risk (Level 2 of 5) for severe thunderstorms on Saturday. While all modes of severe weather are possible, damaging winds, small hail, lightning, along with heavy rainfall will be the primary threats.

There is a Moderate Risk of rip currents at area beaches today.

There is a medium to high chance of showers and thunderstorms most days through the middle of next week. Locally heavy rainfall is possible across Deep South Texas Saturday and Sunday.

Here are the forecast high temperatures and rain chances for Deep South Texas today.

*Current Observations ( )*
*Location*	*Sky/Weather*	*Temp*	*Dewpt*	RH	*Wind*	*Baro*	*Remarks*
Brownsville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Harlingen	N/A	N/A	N/A	N/A	N/A	N/A	N/A
McAllen	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Bayview	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Weslaco	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Edinburg	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Zapata	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Hebbronville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Falfurrias	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Laredo	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Kingsville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Alice	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Notes: *In the Location column, click on links for a list of recent observations at sites of interest. A new window will open.* *In the Wind column, the letter indicates direction the wind blows from (N=North, E=East, S=South, W=West, NE=Northeast, etc). VRB is "variable" and G is "gust". Wind speeds are in MPH.* *In the Baro (pressure) column, values are in inches.* *In the Remarks column, HX is the Heat Index and WCI is Wind Chill Index (if shown). These are "Feels Like" temperatures. VSB is Visibility. "N/A" will be displayed if values are not available.*

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