An upper level ridge over northern Mexico provided more heat for south Texas from the 13th through the 15th. Afternoon heat index values ranged from 110 to 114 degrees over the Coastal Bend.
Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 CRP wrote it up.
An upper level ridge over northern Mexico provided more heat for south Texas from the 13th through the 15th. Afternoon heat index values ranged from 110 to 114 degrees over the Coastal Bend.
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 Corpus Christi, TX wrote its last area forecast discussion before the first event at Sep 13, 11:18 AM CST, 2 hours 42 minutes earlier.
Area Forecast Discussion National Weather Service Corpus Christi TX 1218 PM CDT Wed Sep 13 2023 ...New AVIATION... .SHORT TERM... (Today through Thursday) Issued at 312 AM CDT Wed Sep 13 2023 As the upper pattern over much of the CONUS becomes quasi-zonal, do not expect much southward movement of the frontal boundary (currently over the northern CWA per MSAS.) Concur with the deterministic NAM/GFS/ECMWF, which predict this boundary to remain quasi-stationary along the northern portions of the CWA during the period. The foregoing NWP models predict above normal PWAT values (likely associated with moisture convergence) over the Victoria Crossroads/northern Coastal Bend today, and over a larger portion of the CWA Thursday. The NAM predicts favorable thermodynamics for convection this afternoon afternoon/Thursday. Expect isolated/scattered convection, mainly over the eastern 2/3 of the CWA and mainly during the afternoon/early evening hours, today and Thursday. Maximum Heat Index values 105-109F expected over the southern Coastal Bend today/Thursday. && .LONG TERM... (Thursday night through next Tuesday) Issued at 312 AM CDT Wed Sep 13 2023 Key Messages: - Increasing rain chances late this week into the weekend. Little to no change from the inherited Extended forecast package was required this morning. Rain and thunderstorm chances ramp up late week and through the weekend as a series of upper level disturbances and a cold front sweep through the region. Exact timing on the front remains uncertain at this time, with some of the models indicating FROPA Saturday, while others have it happening Sunday. For now though, will continue to side with the NBM, having the boundary passing early Sunday. Isolated to scattered showers Thursday night are expected to become scattered to at times numerous over the weekend, with accumulations ranging from half and inch to 2 inches over the next 5 to 7 days. As per the latest guidance, Saturday afternoon is shaping to be the most active period with PWATs increasing to around 2.0-2.2 inches ahead of the boundary. Ponding of water will be possible over low-lying and/or heavily urbanized areas, with the Weather Prediction Center carrying a Marginal Risk ERO for portions of the CWA Friday and Saturday. Drier conditions are expected to develop behind the front into early next week, but lingering moisture across the marine zones could spark additional activity through Tuesday. The combination of warm temperatures and high humidity will result in several hours of heat index values exceeding 110 degrees across portions of the southern Coastal Bend Friday, with values generally in the 105-109 degrees range elsewhere. Heat indices are forecast to remain elevated through Saturday, but "cooler" conditions are expected to follow the front Sunday through early next week, with highs running around 2-5 degrees cooler. Aside from this, no other hazards are anticipated across South Texas at this time. && .AVIATION... (18Z TAFS) Issued at 1214 PM CDT Wed Sep 13 2023 While generally VFR conditions are expected, isolated to scattered showers and thunderstorms are possible as early as this afternoon across the eastern Coastal Plains and Victoria Crossroads. Have included VCTS for VCT as the greatest chances for showers and thunderstorms will be over the Victoria Crossroads. Occasional MVFR ceilings will possible over ALI and VCT from 10Z-14Z, with MVFR ceilings and visibility possible in and around thunderstorms. && .MARINE... Issued at 312 AM CDT Wed Sep 13 2023 Expect copious moisture to contribute to mainly nocturnal/morning convection over the Waters during the period, with isolated/scattered coverage today and scattered/numerous coverage Thursday. Isolated to scattered showers and thunderstorms are expected daily Friday through the weekend. Light to moderate onshore flow is expected through the weekend with offshore flow developing behind a frontal boundary on Sunday. && .PRELIMINARY POINT TEMPS/POPS... Corpus Christi 96 79 95 79 / 20 10 30 30 Victoria 98 76 95 75 / 30 30 60 30 Laredo 102 78 103 80 / 10 0 10 10 Alice 101 75 100 77 / 20 10 20 20 Rockport 95 80 94 80 / 30 20 50 50 Cotulla 99 78 102 79 / 10 10 10 20 Kingsville 99 76 98 78 / 10 10 20 20 Navy Corpus 92 82 92 82 / 20 20 40 50 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && SHORT TERM...WC LONG TERM....ANM AVIATION...LS/77
The national radar mosaic for the moment the first event began.
6 heat, 1 excessive heat. Local standard time, as filed.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 114 to 116 degrees.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 110 to 112 degrees.
Afternoon heat index ranged from 110 to 112 degrees.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 110 to 114 degrees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2023Every state in 2023This day in weather historyWarnings in Texas, September 2023
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: 1142067, 1142074, 1142068, 1142069, 1142071, 1142078, 1142077.