Thunderstorms developed along an outflow boundary that was positioned across southeastern Oklahoma. These thunderstorms focused locally heavy rainfall across the area, which resulted in flooding in Choctaw County.
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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.
Thunderstorms developed along an outflow boundary that was positioned across southeastern Oklahoma. These thunderstorms focused locally heavy rainfall across the area, which resulted in flooding in Choctaw County.
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 6, 10:38 PM CST, 1 hour 22 minutes earlier.
Area Forecast Discussion National Weather Service Tulsa OK 1138 PM CDT Sun Aug 6 2017 .DISCUSSION... The discussion for the 06Z TAF forecast can be found below. && .AVIATION... CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG. The guidance has backed off on fog intensity tonight, likely due to cloud cover uncertainties, but IFR conditions are a good bet at most sites at some point thru Monday morning. An unseasonably cool BL, combined with high dewpoints, will yield IFR cigs tonight into Monday morning. Conditions will gradually return to VFR by mid to late morning on Monday. Lacy && .PREV DISCUSSION... /Issued 855 PM CDT Sun Aug 6 2017/ ..UPDATE... DISCUSSION... Tonight is looking much less exciting as outflow boundary has shifted southward into the Red River Valley. Cold front is pushing through Oklahoma and northwest Arkansas and will help keep the outflow boundary from moving much northward movement. Severe potential will be focused generally along and south of the valley with scattered showers and isolated thunder possible ahead of the front. With upper level support well north and weak low-level flow across the region, overall severe threat is low. Abundant low-level moisture and light winds overnight tonight will increase fog potential over portions of the CWA. Fog may become dense in locations and will have to monitor in case a Dense Fog Advisory may be needed for the morning commute. A pretty good swatch of low- and mid-level clouds may prevent dense fog from developing, but if this some areas clear out it shouldn't take much to see quick fog development. Main changes to forecast were to trend pops tonight and add fog for portions of northeast Oklahoma and northwest Arkansas. && .PRELIMINARY POINT TEMPS/POPS... TUL 68 85 67 85 / 10 10 10 10 FSM 71 85 70 85 / 10 10 10 10 MLC 71 84 69 85 / 20 10 20 10 BVO 65 83 64 84 / 10 0 0 0 FYV 65 81 63 81 / 10 10 0 10 BYV 64 81 63 81 / 10 0 10 10 MKO 69 84 67 85 / 10 10 10 10 MIO 65 82 64 83 / 10 0 0 0 F10 69 84 68 85 / 10 10 10 10 HHW 73 84 71 86 / 60 30 20 20 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && AVIATION...30
Hazardous Weather Outlook National Weather Service Tulsa OK 508 PM CDT Sun Aug 6 2017 ARZ001-002-010-011-019-020-029-OKZ049-053>076-071030- 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- 508 PM CDT Sun Aug 6 2017 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...Today and Tonight. THUNDERSTORMS WITH DANGEROUS LIGHTNING. RISK...Significant. AREA...Southeast Oklahoma. ONSET...This evening...Continuing into the overnight hours. DISCUSSION... Flood concerns have decreased across the region today as storms have pushed south into the Red River Valley and northern Texas. Reinforced outflow boundary will continue to sag slowly southward overnight tonight, but could see some scattered storms develop along and a bit north of this boundary as lift along the boundary increases this evening. Cold front currently pushing through central Oklahoma will reinforced the boundary and help nudge it southward even more, and is expected to keep severe thunderstorm chances south into Texas tonight. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Spotter Activation Not Expected. .DAYS TWO THROUGH SEVEN...Monday through Saturday. MONDAY...Thunderstorm Potential. TUESDAY...No Hazards. WEDNESDAY through SATURDAY...Thunderstorm Potential. EXTENDED DISCUSSION... An unsettled weather pattern will persist for the remainder of the work week with chances for showers and thunderstorms each day. weather.gov/tulsa contains additional information.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1156 PM CDT SUN AUG 06 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 AM TORNADO 3 NE BROKEN ARROW 36.08N 95.75W
08/06/2017 WAGONER OK NWS STORM SURVEY
A TORNADO DAMAGED THE ROOFS OF A NUMBER OF HOMES...BLEW
DOWN TREES AND POWER POLES...AND BLEW THE ROOF OFF OF AN
OUTBUILDING.
0135 AM TORNADO 2 NE OOLOGAH 36.47N 95.68W
08/06/2017 ROGERS OK NWS STORM SURVEY
A TORNADO SNAPPED POWER POLES...DAMAGED A HOME...DAMAGED
BARNS...AND BLEW DOWN TREES.
&&
EJCThe Western Arkansas radar (KSRX), 178 km away, was scanning. The volume nearest the first event began at 05:59 UTC.
1 flash flood. Local standard time, as filed.
Numerous roads were flooded and closed in Hugo. Highway 271 south of Hugo was briefly closed due to flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2017Every state in 2017This day in weather historyWarnings in Oklahoma, August 2017
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: 718103.