Showers and thunderstorms produced widespread rainfall amounts of two to three inches, with locally heavy amounts up to five inches, across portions of northeastern Oklahoma during the morning of August 11th. This locally heavy rainfall resulted in isolated areas of flash flooding.
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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 TSA wrote it up.
Showers and thunderstorms produced widespread rainfall amounts of two to three inches, with locally heavy amounts up to five inches, across portions of northeastern Oklahoma during the morning of August 11th. This locally heavy rainfall resulted in isolated areas of flash flooding.
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 Tulsa, OK wrote its last area forecast discussion before the first event at Aug 11, 5:22 AM CST, 2 hours earlier.
Area Forecast Discussion National Weather Service Tulsa OK 622 AM CDT Sun Aug 11 2024 ...New AVIATION... .SHORT TERM... (Today) Issued at 234 AM CDT Sun Aug 11 2024 Showers and thunderstorms have steadily increased early this morning across western and central Oklahoma, a trend that will continue through the morning as they also shift eastward. Heavy rainfall remains the main concern today, with current mesoanalysis showing 2 inch precipitable water values across much of eastern Oklahoma and instability levels supporting thunderstorms. With widespread rainfall and plenty of cloud cover today, expect well below normal high temperatures, along with a southwest to northeast oriented gradient in them based on the timing of the showers/storms. && .LONG TERM... (Tonight through Saturday) Issued at 234 AM CDT Sun Aug 11 2024 Another round of evening and overnight thunderstorms are expected tonight into early Monday morning, focused across the northern half of the forecast area. Locally heavy rain remains a concern, with the axis shifted north and east of where it should be during the day today. Upper level high pressure will expand across the forecast area Monday and into mid week, forcing the main precipitation chances the north and bringing heat and humidity back to the region. Dew points should be high - well into the 70s - during this period due to the rainfall expected today and tonight and combined with above normal air temperatures, will lead to dangerous heat index values for much of next week. Heat headlines should be expected, including potential for warnings. An upper level trough moving through the central United States Thursday and into Friday will bring a chance for showers and thunderstorms and also potential for slightly cooler temperatures. Any kind of minor cooldown looks to be short-lived, however, as the ridge expands northward for the weekend, with temperatures increasing accordingly. && .AVIATION... (12Z TAFS) Issued at 621 AM CDT Sun Aug 11 2024 Periodic RA/TSRA impacts- MVFR cigs and vsbys are expected at all sites into early afternoon at all sites. This activity will shift east of the TAF sites at that time. Additional PROB30 groups will be added to the AR sites after 08z, and will include MVFR cigs and vsby restrictions. Outside of TSRA impacts, VFR TAF elements will prevail at all sites during the valid period. && .PRELIMINARY POINT TEMPS/POPS... TUL 81 73 93 75 / 90 50 20 10 FSM 83 71 92 74 / 60 20 30 0 MLC 85 74 95 75 / 70 20 20 0 BVO 80 69 92 70 / 80 50 20 20 FYV 80 67 89 70 / 80 50 50 10 BYV 79 66 89 69 / 70 60 60 10 MKO 82 71 92 73 / 80 40 30 10 MIO 79 68 90 69 / 70 80 40 20 F10 85 72 93 74 / 90 30 20 0 HHW 92 73 96 75 / 40 10 10 0 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && SHORT TERM...22 LONG TERM....22 AVIATION...23
Hazardous Weather Outlook National Weather Service Tulsa OK 455 AM CDT Sun Aug 11 2024 ARZ001-002-010-011-019-020-029-OKZ049-053>076-121000- Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK- Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK- Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK- Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK- Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK- Washington OK-Washington AR- 455 AM CDT Sun Aug 11 2024 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...Today and Tonight. HEAVY RAIN AND FLASH FLOOD. RISK...Elevated. AREA...Eastern Oklahoma and Northwest Arkansas. ONSET...Ongoing. THUNDERSTORMS WITH DANGEROUS LIGHTNING. RISK...Significant. AREA...Eastern Oklahoma and Northwest and West Central Arkansas. ONSET...Ongoing. DISCUSSION... Scattered thunderstorms are ongoing this morning across areas along and north of Interstate 40, with a more widespread complex of thunderstorms in western and central Oklahoma. This complex is expected to move eastward through the morning and early afternoon hours, with a heavy rain and localized flooding threat. One to two inch rainfall amounts will be common, with isolated totals to three inches. Additional thunderstorms are expected tonight and into early Monday across the northern half of the area. The overall heavy rain threat tonight should focus in far northeast Oklahoma and into northwest Arkansas. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Spotter Activation Not Expected. .DAYS TWO THROUGH SEVEN...Monday through Saturday. MONDAY AND TUESDAY...Thunderstorm and Dangerous Heat Potential. WEDNESDAY...Dangerous Heat Potential. THURSDAY AND FRIDAY...Thunderstorm and Dangerous Heat Potential. SATURDAY...Dangerous Heat Potential. EXTENDED DISCUSSION... Thunderstorms will likely be ongoing Monday morning across parts of northeast and east central Oklahoma, as well as northwest and west central Arkansas. The ongoing heavy rain threat will continue through midday Monday, especially in northwest Arkansas. Monday night and into Tuesday, the bulk of the overnight thunderstorms should be to the north in Kansas and Missouri, although the southern edge may brush parts of northeast Oklahoma and northwest Arkansas. Upper level high pressure will build back into the region for the early to middle part of the work week, with hot and humid conditions developing as a result. Expect a multi-day period of dangerous heat index values and heat headlines this coming week. An upper level storm system in the central United States toward the end of the work week will bring low thunderstorm chances to the area. weather.gov/tulsa contains additional information.
The Tulsa radar (KINX), 46 km away, was scanning. The volume nearest the first event began at 13:21 UTC.
1 flash flood. Local standard time, as filed.
Portions of several roads in and around Muskogee were reported flooded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2024Every state in 2024This day in weather historyWarnings in Oklahoma, 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: 1208284.