The final days of this abnormally hot summer lasted until the last day of summer into the first days of autumn. Afternoon heat index values ranged from 110 to 114 degrees over the Coastal Bend on the 23rd and excessive values from 115 to 118 degrees on the 24th.
Every event with a place to put it; 11 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.
The final days of this abnormally hot summer lasted until the last day of summer into the first days of autumn. Afternoon heat index values ranged from 110 to 114 degrees over the Coastal Bend on the 23rd and excessive values from 115 to 118 degrees on the 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 Corpus Christi, TX wrote its last area forecast discussion before the first event at Sep 22, 11:50 AM CST, 2 hours 10 minutes earlier.
Area Forecast Discussion National Weather Service Corpus Christi TX 1250 PM CDT Fri Sep 22 2023 ...New AVIATION... .SHORT TERM... (Today through Saturday) Issued at 336 AM CDT Fri Sep 22 2023 Key Messages: - Heat Advisory in effect for the Southern Coastal Bend - Isolated thunderstorms possible through the day GOES Nighttime Microphysics this morning reveals some pockets of low level stratus spreading across the Coastal Plains. It's possible we see some patchy fog develop through sunrise, generally across the Coastal Plains and Victoria Crossroads. GOES TPW imagery is picking up on a swath of deeper moisture (~1.8" PWATs) draped along the coast and over our waters. Streamer shower activity is beginning to develop within this axis of deeper moisture and is expected to continue through the morning hours. As we head through the day, upper level ridging will shift west leaving us with northwesterly flow aloft. A shortwave looks to rotate around the periphery of the ridge through the day but the best lift should remain to north. However, there may be enough support to enhance some additional convective development along the sea breeze. Recent CAM guidance is hit or miss with inland development today so have leaned towards the HREF solution with a 20-30% chance across the Coastal Bend and Victoria Crossroads. Any convection that does develop will wane this evening with the loss of day time heating. Similar to last night, patchy fog will be possible across the Coastal Plains closer to sunrise. More of the same is expected on Saturday. PWATs remain in the 1.7- 1.9" range which may lead to some isolated activity closer to the coast but without much upper level support, most will stay dry. Increased moisture today will allow for heat indices to climb into the 110-114 range this afternoon. Therefore, a Heat Advisory is in effect for Kleberg, Nueces, and San Pat counties. Heat indices from 105-109 can be expected outside of the Advisory area. Similar conditions are expected on Saturday with heat indices back in the 110-114 range. && .LONG TERM... (Saturday night through next Thursday) Issued at 336 AM CDT Fri Sep 22 2023 Key Message: - Increasing rain chances next week with an approaching cold front Quiet start to the long term with rain-free conditions expected Saturday night through Sunday night as the mid-level ridge over Central Mexico holds strong. Could see maximum heat index values flirt near that 110 mark over the southern Coastal Bend on Sunday. A mid-level trough passing into the Great Plains from the Rockies will be accelerated by a closed low over Minnesota and continue eastward across the Midwest into the eastern CONUS next work week. This feature will likely bring a cold front through portions of Texas but the main considerations are how strong and how far south will this front push? The CMC is the most aggressive southward push of the cold front, as usual, surging the cold front through South Texas Tuesday morning with northerly flow persisting through Friday. The ECMWF is less progressive but the wettest solution with a pre-frontal wind shift Tuesday morning and the cold dissipating and meandering across South Texas through Friday. Lastly, the GFS is the least aggressive with the cold front dissipating north of South Texas over the Hill Country but still maintains rain chances with moisture pooling. Although winds may shift north-northeasterly in these solutions, equivalent potential temperature shows the actual front and different air masses more clearly. The strength and position of the cold front plays a major role in the precipitation chances Monday through Thursday. As mentioned before, the ECWMF is the wettest with the dissipating boundary and greatest moisture convergence. The CMC is the driest due to the strong push of the cold front bringing drier air in its wake over the area. The GFS contains near the same enhanced moisture the ECMWF projects with PWATs 1.75-2.0" (75th percentile) but lacks the lift support. The CMC is extremely aggressive with these fronts, especially at this time of the year, so will not be considering its solution. Bringing in a combination of the ECENS and GEFS results in a 30-45% chance of showers and thunderstorms Monday through Tuesday, then decreasing Wednesday and Thursday as model agreement and confidence decreases. Good news, the increasing chances of precipitation, sky cover, and possibly northerly flow will result in lower max temperatures with highs in the low to mid 90s across South Texas Tuesday through Thursday. Lows will remain in the 70s with the increasing moisture but if the front trends further south, this may need to be lowered. && .AVIATION... (18Z TAFS) Issued at 1232 PM CDT Fri Sep 22 2023 Brief MVFR ceilings near isolated showers/thunderstorms this afternoon over mainly the northern Coastal Bend/Victoria Crossroads. Otherwise, VFR conditiions will prevail through early tonight. A transition to a mixture of VFR conditions and MVFR ceilings and/or visibilities are anticipated by early Saturday morning, along with the development of isolated/scattered showers near the coast (affecting mainly CRP). Afterward, isolated/ scattered showers, with MVFR conditions, are expected to develop/move across the Coastal Plains 12-18z Saturday. && .MARINE... Issued at 336 AM CDT Fri Sep 22 2023 Light onshore flow this morning will strengthen through the day becoming light to moderate, mainly south of Port Aransas. Isolated to scattered showers and thunderstorms will be possible as we head into the weekend as deeper moisture spreads over the area. Weak to moderate onshore flow Saturday night through Monday night will weaken and shift northeasterly Tuesday as a weak cold front briefly pushes through. East to southeasterly flow is expected to return by Tuesday night. Scattered showers and thunderstorms are possible Monday through the middle of next week. && .PRELIMINARY POINT TEMPS/POPS... Corpus Christi 95 78 94 78 / 30 10 20 0 Victoria 96 77 96 76 / 30 10 20 0 Laredo 101 78 102 78 / 0 0 0 0 Alice 100 76 100 75 / 20 0 10 0 Rockport 93 80 93 80 / 30 20 30 10 Cotulla 102 78 103 78 / 0 0 0 0 Kingsville 99 78 98 77 / 20 10 10 0 Navy Corpus 92 83 92 82 / 30 20 20 10 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...Heat Advisory until 6 PM CDT this evening for TXZ242>244-342>344. GM...None. && SHORT TERM...TC LONG TERM....EMF AVIATION...WC/87
The national radar mosaic for the moment the first event began.
9 heat, 2 excessive heat. Local standard time, as filed.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 110 to 114 degrees.
Afternoon heat index ranged from 110 to 112 degrees.
Afternoon heat index ranged from 115 to 118 degrees.
Afternoon heat index ranged from 115 to 118 degrees.
Afternoon heat index ranged from 110 to 113 degrees.
Afternoon heat index ranged from 110 to 113 degrees.
Afternoon heat index ranged from 110 to 113 degrees.
Afternoon heat index ranged from 110 to 113 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: 1142081, 1142083, 1142084, 1142085, 1142086, 1142088, 1142089, 1142091, 1142092, 1142094, 1142095.