Heat wave persisted for one more day in August.
Every event with a place to put it; 2 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.
Heat wave persisted for one more day in August.
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 Aug 29, 5:13 AM CST, 6 hours 47 minutes earlier.
Area Forecast Discussion National Weather Service Corpus Christi TX 613 AM CDT Tue Aug 29 2023 ...New AVIATION... .SHORT TERM... (Today through Wednesday) Issued at 401 AM CDT Tue Aug 29 2023 Key Messages: - Monitoring for an increased rip current risk and coastal flooding potential Water vapor imagery this morning paints a busy picture with ridging to our west, a trough across the Midwest, and Tropical Storm Idalia entering the Gulf to our east. At the surface, a decaying frontal boundary is draped across the region. GOES TPW hints at PWATs around 2" across our southern tier of counties with drier air (PWATs ~1.5") across our northern counties. This drier air will continue to drift south into the region through the day today. We can't rule out some isolated showers and thunderstorms through this afternoon, generally within this axis of deeper moisture as a H7 vort max passes through aloft. With that said, most locations will stay dry today. After today's convection, dry conditions will settle in through the middle of the week. High temperatures today look to settle into the mid 90s to around 102. Drier air will help to tame heat indices a bit today. A few spots may briefly reach 110 for a short time this afternoon but not for a long enough stretch to warrant a Heat Advisory. High temps will warm a couple of degrees on Wednesday. However, the arrival of much drier air will keep heat indices generally less than 105. It's likely that we start to see some impacts from Tropical Storm Idalia arrive along our coast overnight tonight into Wednesday. While the system is forecast to reach major hurricane strength before making landfall along the Gulf coast of Florida, long period swells will begin to spread over our waters by the middle of the week. 10-11s swells and a full moon on the 30th would likely lead to an increased rip current risk and potential for minor coastal flooding. Went ahead and increased our rip current risk to moderate starting tonight. It's possible that we see a bump up to high later on today or tomorrow. At this time, PETSS guidance is not picking up on the potential for coastal flooding. However, the full moon, 10- 11s swells, and a northeasterly winds would likely help drive water to the dunes as Ekman transport kicks in during Wednesday's high tide cycle. && .LONG TERM... (Wednesday night through next Monday) Issued at 401 AM CDT Tue Aug 29 2023 Key Messages: - Increased risk of dangerous rip currents and minor coastal flooding likely to continue through the end of the work week. - Slight chance (10-20%)of showers and thunderstorms along the coastal areas this holiday weekend and into next week. Higher chances across the Coastal Waters. Main concern for Thursday, and perhaps into Friday, will be moderate to high risk of rip currents and minor coastal flooding in response to Idalia moving across the eastern Gulf of Mexico over the next couple of days. Although the National Hurricane Center forecast Idalia to make landfall along the Florida Coast early Wednesday, swells may continue to propagate toward the TX coast through Thursday, then should diminish by Friday. Otherwise, Thursday and Friday are expected to be hot under mostly sunny skies and light to moderate onshore winds as high pressure builds back across TX. Minimum relative humidity values across the Brush Country each afternoon are progged to range from 20-30% and 30- 50% along the coastal areas. Fire weather conditions are not anticipated at this time for Thu/Fri, as winds should remain below thresholds. Fuel dryness currently is at normal levels across the Brush Country and southern Coastal bend, but are dry to critically dry across the northern Coastal Bend and Victoria Crossroads. Therefore, any fires that do develop could spread quickly. The high pressure aloft gets pushed north and east by an upper low pressure system that is progged to move slightly west this weekend. This will bring the upper low across E TX with its trough axis draped southward along the TX coast. Sufficient moisture is progged to advect across the gulf toward the TX coast with PWATs increasing to around 1.7 inches. The combination of the moisture with the upper trough and possibly a stalled frontal boundary, may be enough for isolated convection along the coastal counties over the weekend. The slight chance of convection continues into early next week, mainly morning convection along the coast, then along the afternoon sea breeze. Rain chances look better over the coastal waters where the moisture will be deeper and the environment is expected to be more unstable. Heat Index values are forecast to be generally 105 to 109 degrees over the weekend, but begin to increase Mon to 110-113 across the southern Coastal Bend. There is very low chance of the heat indices exceeding 115, but the chance of exceeding 110 across the coastal bend goes from around 20-30 percent Fri/Sat to around 40-50 percent Sun through Tue. && .AVIATION... (12Z TAFS) Issued at 605 AM CDT Tue Aug 29 2023 VFR conditions are in place along with light winds across all terminals. GOES Microphysics imagery reveals some patchy fog/stratus developing near VCT so included a TEMPO for MVFR restrictions for a couple of hours. Winds will increase through the day with gusts from 15-20 knots possible. Winds will be light and variable again tonight. && .MARINE... Issued at 401 AM CDT Tue Aug 29 2023 A weak to moderate northeasterly flow will develop through the day before becoming weak overnight. Isolated showers and thunderstorms will be possible over the waters today as deep moisture remains in place. Winds will slowly regain an onshore component through the day Wednesday. Seas will begin to increase late in the day Wednesday as Tropical Storm Idalia moves across the Eastern Gulf of Mexico. A light and variable flow is expected Wednesday night into Thursday. A generally light onshore flow can be expected Friday through the weekend with a slight increase in the afternoons. Isolated to scattered showers and thunderstorms are possible this weekend. && .PRELIMINARY POINT TEMPS/POPS... Corpus Christi 99 77 101 75 / 20 0 0 0 Victoria 100 72 103 72 / 20 0 0 0 Laredo 102 78 103 77 / 10 0 0 0 Alice 102 75 104 72 / 20 0 0 0 Rockport 98 79 98 77 / 30 0 0 0 Cotulla 102 76 102 76 / 0 0 0 0 Kingsville 101 76 103 75 / 10 0 0 0 Navy Corpus 95 81 96 80 / 20 0 0 0 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && SHORT TERM...TC LONG TERM....TE AVIATION...TC/95
The national radar mosaic for the moment the first event began.
2 heat. Local standard time, as filed.
Heat index values ranged from 110 to 113 degrees.
Heat index values 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, August 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: 1134161, 1134162.