A strong 591-595 mb heat dome over the region resulted in dangerously hot temperatures across the Deep South Texas Brush Country/Coastal Plains on July 21st. High temperatures well into the 90s coupled with strong humidity levels resulted in peak heat indices topping out at or above 111F degrees briefly across Northern Brooks County on July 21st.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BRO wrote it up.
A strong 591-595 mb heat dome over the region resulted in dangerously hot temperatures across the Deep South Texas Brush Country/Coastal Plains on July 21st. High temperatures well into the 90s coupled with strong humidity levels resulted in peak heat indices topping out at or above 111F degrees briefly across Northern Brooks County on July 21st.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Brownsville, TX wrote its last area forecast discussion before the first event at Jul 21, 11:21 AM CST, 3 hours 54 minutes earlier.
Area Forecast Discussion National Weather Service Brownsville TX 1221 PM CDT Mon Jul 21 2025 ...New DISCUSSION, AVIATION, MARINE... .DISCUSSION... Issued at 1213 PM CDT Mon Jul 21 2025 High pressure is currently in place over Deep South Texas and seasonably hot weather with mostly sunny to partly cloudy skies is expected to continue through the remainder of the week. Little-to-no precipitation is expected through Thursday. Winds should remain overall south-southeasterly, which will continue to bring humidity to the region, supporting a continual moderate heat risk throughout the week. High temperatures should generally be between the upper 90s and lower 100s, with the hottest temperatures being observed in the Western Ranchlands. Low temperatures should remain in the mid to upper 70s throughout the week. Rip current risk is expected to be moderate tonight and tomorrow at local area beaches. Some model guidance is showing the potential for a mid-level area of low pressure to move from a stalled frontal boundary over the northeastern Gulf southwestward towards Deep South Texas Friday into Saturday. Other guidance suggests that this area of low pressure will trek futher north and impact the upper Texas coast instead. Because models are currently not in agreement, forecast confidence is low at this time. However, if this mid-level low pressure does move closer to the lower Texas coast, our area could see increased chances (10-20%) for precipitation over the weekend. If these low rain chances do materialize, areas that would most likely receive precipitation are areas east of I-69E and the Gulf waters. Precipitation chances should start to decrease again Sunday into Monday of next week as hot and humid weather continues. && .AVIATION... (18Z TAFS) Issued at 1213 PM CDT Mon Jul 21 2025 VFR conditions are expected at all airports with southeasterly winds. && .MARINE... Issued at 1213 PM CDT Mon Jul 21 2025 Seas are expected to be fair to moderate throughout the week, with brief overnight periods where Small Craft Exercise Caution conditions are possible tonight and tomorrow night. Wave heights are expected to be around 2-3 feet, and winds should be light to moderate and south-southeasterly through the weekend. && .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE 94 79 94 79 / 0 0 0 0 HARLINGEN 97 76 97 76 / 0 0 0 0 MCALLEN 99 80 100 79 / 0 0 0 0 RIO GRANDE CITY 101 77 101 76 / 0 0 0 0 SOUTH PADRE ISLAND 88 80 88 79 / 0 0 0 0 BAYVIEW/PORT ISABEL 93 78 93 78 / 0 0 0 0 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && SHORT TERM...55-MM LONG TERM....55-MM AVIATION...55-MM
The national radar mosaic for the moment the first event began.
1 heat. Local standard time, as filed.
Falfurrias (AWOS) recorded peak heat indices between 111-115F for a couple of hours during the afternoon/evening (between 4:15-6:15 PM CDT).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2025Every state in 2025This day in weather historyWarnings in Texas, July 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1287022.