Similar to August 24, environmental conditions were favorable for the development of waterspouts, landspouts, or tropical funnel clouds. A landspout was sighted in Donna during the afternoon of August 24th.
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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.
Similar to August 24, environmental conditions were favorable for the development of waterspouts, landspouts, or tropical funnel clouds. A landspout was sighted in Donna during the afternoon of August 24th.
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 Aug 26, 1:11 PM CST, 7 minutes earlier.
Area Forecast Discussion National Weather Service Brownsville TX 211 PM CDT Mon Aug 26 2024 ...New SHORT TERM, LONG TERM, MARINE... .SHORT TERM... (Tonight through Tuesday night) Issued at 206 PM CDT Mon Aug 26 2024 Key Messages: * Minor to moderate HeatRisk continues as weather pattern becomes a bit more unsettled with day-to-day chances for showers and thunderstorms * Outside of showers and/or thunderstorms, marine conditions look to remain favorable through Tuesday night A closed low passing to our north will be one of the primary drivers to our sensible weather pattern here across Deep South Texas and the Rio Grande Valley as we wrap up the last week in August. Latest Doppler radar and GOES-East visible satellite imagery depict a broad area of showers and thunderstorms over south-central and southeast Texas (EWX, HGX, and CRP's area) this afternoon. These showers and storms are associated with the aforementioned closed low that has since moved inland from the the western Gulf of Mexico. Here across Deep South Texas and the Rio Grande Valley, isolated to scattered showers have developed along a sea breeze and increased instability. Forecast trends over the past 24 hours have continued to favor a more northerly shift in the track of this mid-level feature. This means that areas to our north from Corpus Christi into central and southeast Texas will likely have more impacts (i.e. higher rain chances and QPF amounts) from this system than us here in Deep South Texas, as those areas will be more on the receiving end of a more favorable southeasterly fetch of Gulf moisture. That said, mid-level circulation is expected to continue to track/pass to our north underneath an anomalously strong (+2 to +3 STDEVs above normal) 597 dam sub-tropical heat dome located over the central Plains and the Midwest. This closed low/weakness in the 500 mb pattern will result in some forcing of ascent. This coupled with high moisture content (PWATS between 1.6-2 inches), increased instability (MLCAPE values between 500-1,000 J/kg, SBCAPE values up to 2,000 J/kg, and Showalter values between 0 to minus 3), and sea breeze interaction will be adequate enough to set off some diurnal showers and thunderstorms this afternoon, Tuesday afternoon, and for that matter most if not all of this week. Severe weather is not anticipated given the unfavorable jet stream structure/dynamics including weak flow aloft, weak 0-6 km bulk shear values, and weak mid-level lapse rates between 5-6 C/km. That said, lightning, heavy downpours, and gusty winds will be the primary threats. The Storm Prediction Center's SWODY1 and SWODY2 has the entire forecast area outlooked under just a general thunderstorm risk for today and Tuesday, respectively. Given the weakness in the 500 mb pattern, temperatures or the heat will continue to be held in check through the short-term period. Nights will continue warm and humid with overnight lows in the mid 70s to near 80F. However, the daytime highs for today and Tuesday are progged to be slightly cooler than normal for late August standards with values in the low to mid 90s (few spots getting into the upper 90s). Minor to moderate HeatRisk will continue through Tuesday night with max heat indices between 100-110F, below both SPS and Heat Advisory criteria. In addition to any rainfall, the increase in cloud coverage will help to keep temperatures lower. && .LONG TERM... (Wednesday through next Monday) Issued at 206 PM CDT Mon Aug 26 2024 A somewhat active pattern will continue through the long term period as a weakening upper-level low remains situated over Texas through the latter half of the week. The upper-level low will slowly move off to the northeast this weekend as it is absorbed into an upper-level trough moving across the Central Plains. Generally weak upper and mid level flow over Deep South Texas will continue through the remainder of the period. PW values are expected to climb to 2-2.3 inches each afternoon. Combined with weak synoptic forcing, this deep moisture could support isolated to scattered showers and thunderstorms along the sea breeze each afternoon. Afternoon high temperatures look to remain the mid to upper 90s through the period. With the increased humidity, apparent temperature will continue to be a concern with heat indices peaking just below Heat Advisory threshold each afternoon. Heat Advisories aren’t likely to be needed, though they can’t be ruled out either. Overnight lows look to remain in the mid to upper 70s through the period. && .AVIATION... (18Z TAFS) Issued at 1246 PM CDT Mon Aug 26 2024 Through 18z Tuesday....Main forecast concern for the terminals through the 18z TAF cycle will be the chance for showers and/or thunderstorms, associated with a closed low passing to our north and interactions with a sea breeze. Any shower or storm can come with heavy downpours and gusty winds, which could briefly reduce flight categories down to MVFR/IFR. Outside of any showers or thunderstorms, VFR conditions will prevail through the 18z TAF cycle. Winds are light and variable it not out of the east-southeast between 5-10 kts this afternoon. Expect for winds to trend towards calm later tonight before picking back up out of the east-southeast 5-10 kts on Tuesday. && .MARINE... Issued at 206 PM CDT Mon Aug 26 2024 Tonight through Tuesday night...Outside of the threat for a shower or thunderstorm, favorable marine conditions are expected to prevail through the short-term period or through Tuesday night with low to moderate winds and low seas. Wednesday through next Monday...Generally favorable marine conditions are expected through the period. Light to moderate easterly to southeasterly winds and slight seas are expected to prevail through the weekend. Isolated to scattered showers and thunderstorms will be possible through the period. Winds and seas could be higher in and around storms. && .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE 79 93 79 95 / 10 30 10 50 HARLINGEN 74 94 76 95 / 10 40 10 50 MCALLEN 78 98 79 98 / 10 20 10 40 RIO GRANDE CITY 76 97 77 98 / 10 20 10 30 SOUTH PADRE ISLAND 82 89 82 90 / 10 20 10 40 BAYVIEW/PORT ISABEL 77 91 79 92 / 10 30 10 40 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && SHORT TERM...23-Evbuoma LONG TERM....60-BE AVIATION...23
The Brownsville radar (KBRO), 69 km away, was scanning. The volume nearest the first event began at 19:20 UTC.
1 tornado. Local standard time, as filed.
A landspout was reported in Donna. Image was shared on Slack/NWS Chat 2.0. Timing was based off their observation along with radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2024Every state in 2024This day in weather historyThe tornado archive for Texas, 2024Warnings in Texas, August 2024
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: 1209224.