Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Click a location below for detailed forecast.

Last Map Update: Wed, Jun 17, 2026 at 6:16:29 pm CDT

Watches, Warnings & Advisories

National Weather Service Austin/San Antonio, TX

National Weather Service Houston/Galveston, TX

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National Weather Service Brownsville/Rio Grande Valley, TX

Tropical Storm Warning

Flood Warning

Extreme Heat Warning

Heat Advisory

Coastal Flood Advisory

Small Craft Advisory

Extreme Heat Watch

Heat Advisory

Heat Safety

Potential Tropical Cyclone One

Small Craft Advisory

Coastal Flood Advisory

Today

Tonight

A Heat Advisory is in effect for counties along and east of US Hwy 281 through 7PM Today (Wednesday). Hot temperatures and high humidity may cause heat illnesses. Please remember to stay hydrated and cool, limit time outdoors during the afternoon and look before you lock!

Be cautious as heat indices climb well into the 100s the remainder of this week. Sunny skies and humid conditions may result in dangerous heat related illness if precautions are not taken. Please stay cool and hydrated, check on others, and look before you lock. Don't forget about our furry friends, they need help to stay cool and hydrated too!

Tropical Update 4AM CDT: Potential Tropical Cyclone One is forecast to hug the Texas coast as the system moves northeast away from South Texas. It looks less likely to develop tropical characteristics but regardless of tropical formation, although less likely, the impacts would be short lived and below Tropical Storm criteria along our coast. Our messaging remains the same; isolated areas (northeast counties) of additional light rainfall through Wednesday, as this threat continues to decrease for South Texas.

A Small Craft Advisory for all our waters is in effect until 7 PM Wednesday evening. Seas will be around 5-7 feet and winds will be around 10-20 knots with gusts to 35 knots.

A Coastal Flood Advisory remains in effect until 7 PM Wednesday evening. Be aware that water will likely reach the dunes, especially during times around high tide, and beach roads may be inundated.

Temperatures quickly rebound today as dry conditions and clearing skies lead to efficient daytime heating. Combined with high humidity, heat indices will soar into the 105-114° range and a Heat Advisory is in effect for much of South Texas today.

Tonight, clearing skies will accompany dry conditions and overnight lows ranging in the 70s to mid 80s.

*Hourly Weather Roundup ( )*
*Location*	*Sky/Weather*	*Temp*	*Dewpt*	RH	*Wind*	*Baro*	*Remarks*
Alice	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Beeville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Corpus Christi	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Corpus Christi NAS	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Cotulla	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Kingsville NAS	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
Port Lavaca	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Rockport	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Victoria	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Note: "N/A" or "MISG" will be displayed if values are not available. In the LOCATION column, click on links for a list of recent observations at sites of interest. In the WIND column, 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 "heat index", WCI is "wind chill index", and VSB is "visibility" (if shown).

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Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

NWS Corpus Christi