Thunderstorms developed during the afternoon of the 15th across northeastern Oklahoma in advance of a cold front that moved into the region. Heavy rain occurred across portions of Tulsa County, resulting in localized flooding.
Every event with a place to put it. 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 TSA wrote it up.
Thunderstorms developed during the afternoon of the 15th across northeastern Oklahoma in advance of a cold front that moved into the region. Heavy rain occurred across portions of Tulsa County, resulting in localized 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 15, 2:10 PM CST, 2 hours 58 minutes earlier.
Area Forecast Discussion National Weather Service Tulsa OK 310 PM CDT Tue Aug 15 2017 .DISCUSSION... Messy forecast over the next few days, with multiple rounds of showers and thunderstorms, including some continued heavy rain potential, through at least the end of this week. Immediate concern is the developing area of showers and thunderstorms near the I-35 corridor across central and northern Oklahoma. This convection should continue to increase as a mid level wave moves to the northeast across northern Oklahoma and into southern Kansas this evening. Instability is higher across northeast Oklahoma than in areas near I-35, per current mesoanalysis, which should lead to an increase in the intensity as the showers/storms push eastward. At the very least, the stronger storms should pose a locally heavy rain threat, with at least some potential for hail and strong winds as well. Most the afternoon and evening storms should be north of the Kansas and Missouri borders by midnight. There should be a lull in the shower and storm activity across most of the forecast area through much of tomorrow morning, but chances should increase once again during the afternoon and definitely by evening as a stronger upper level disturbance and an associated front approach the region. These storms may pose a greater threat of severe weather, given the stronger wind fields, in conjunction with high instability. The aforementioned front will push through the forecast area Thursday, moving the thunderstorm potential with it to the southeast. Yet another disturbance will approach from the west late Thursday night and into Friday, with an accordant increase in the thunderstorm potential, generally from southwest to northeast. Things may finally dry out somewhat during the weekend, with thunderstorm potential likely limited to diurnal afternoon development by early next week. Upper level high pressure will build into the forecast area next week, which should bring a return to more seasonal temperatures by Monday. && .PRELIMINARY POINT TEMPS/POPS... TUL 76 89 72 90 / 70 60 60 10 FSM 77 92 77 90 / 20 30 50 50 MLC 76 88 75 90 / 30 30 50 40 BVO 73 91 71 88 / 70 60 60 10 FYV 72 86 73 86 / 30 40 50 40 BYV 73 88 72 87 / 30 40 50 40 MKO 77 88 74 89 / 40 50 60 30 MIO 74 90 70 87 / 50 60 60 10 F10 76 88 73 89 / 50 50 60 20 HHW 76 91 76 91 / 10 20 40 40 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && LONG TERM....22
Hazardous Weather Outlook National Weather Service Tulsa OK 350 PM CDT Tue Aug 15 2017 ARZ001-002-010-011-019-020-029-OKZ049-053>076-161030- 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- 350 PM CDT Tue Aug 15 2017 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...This Afternoon and Tonight. SEVERE THUNDERSTORM. RISK...Elevated. AREA...Mainly Northeast and East Central Oklahoma. ONSET...Ongoing through Mid Evening. HEAVY RAIN AND FLASH FLOOD. RISK...Limited. AREA...Mainly Northeast and East Central Oklahoma. ONSET...Ongoing through Late Evening. DANGEROUS HEAT. RISK...Elevated. AREA...Eastern Oklahoma and West Central Arkansas. ONSET...Ongoing through Early Evening. DISCUSSION... Showers and thunderstorms will move through portions of northeast and east central Oklahoma late this afternoon and into the evening hours. High instability across the area will allow for an elevated severe storm potential, with large hail and damaging wind gusts being the primary threats. Locally heavy rain could also lead to some flash flooding potential, especially where heavy rain persists. The severe storm and heavy rain potential should diminish toward midnight, although a few thunderstorms may linger into the early morning hours Wednesday. Heat indices from 105 to 108, resulting from very high moisture values, will persist through early evening across portions of east central and southeast Oklahoma, as well as west central Arkansas. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Activation of the Regional Spotter Network Possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. WEDNESDAY...Severe Thunderstorm Potential. THURSDAY THROUGH MONDAY...Thunderstorm Potential. EXTENDED DISCUSSION... A surface boundary in the area and several upper disturbances will maintain thunderstorm chances in the Wednesday to Friday period. The best chance of severe thunderstorms and locally heavy rain will occur Wednesday, resulting from high instability and strengthening wind fields. By the weekend, some upper level ridging begins to take place, leading to decreasing thunderstorm chances and a return to warmer and more humid conditions that will likely continue into the next week. weather.gov/tulsa contains additional information.
Special Weather Statement
National Weather Service Tulsa OK
344 PM CDT TUE AUG 15 2017
OKZ054-059-064-152115-
Osage OK-Pawnee OK-Creek OK-
344 PM CDT TUE AUG 15 2017
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL OSAGE...WESTERN CREEK AND
PAWNEE COUNTIES UNTIL 415 PM CDT...
At 343 PM CDT, strong thunderstorms were located along a line
extending from 10 miles west of Ralston to 6 miles west of Quay to
near Chandler. Movement was east at 30 mph.
Dime size hail and wind gusts up to 50 mph will be possible with
these storms.
Locations in or near the path include...
Bristow... Pawnee...
Hominy... Cleveland...
Mannford... Drumright...
Fairfax... Oilton...
Depew... Jennings...
Ralston... Westport...
Osage... Hallett...
Blackburn... Terlton...
Shamrock... Maramec...
Skedee... Milfay...
This includes Interstate 44 between mile markers 178 and 192.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3651 9703 3655 9690 3658 9689 3660 9691
3681 9642 3632 9630 3576 9639 3571 9662
3616 9662 3616 9682 3624 9682 3625 9692
3633 9693 3634 9703
TIME...MOT...LOC 2043Z 247DEG 25KT 3650 9692 3614 9682 3573 9689
69Special Weather Statement
National Weather Service Tulsa OK
547 PM CDT TUE AUG 15 2017
OKZ054-055-060-061-064-066-067-070-152345-
Tulsa OK-Muskogee OK-Okmulgee OK-Osage OK-Rogers OK-Washington OK-
Wagoner OK-Creek OK-
547 PM CDT TUE AUG 15 2017
...SIGNIFICANT WEATHER ADVISORY FOR ROGERS...SOUTHEASTERN OSAGE...
EASTERN CREEK...SOUTHERN WASHINGTON...WAGONER...NORTHWESTERN
MUSKOGEE...NORTHERN OKMULGEE AND TULSA COUNTIES UNTIL 645 PM CDT...
At 547 PM CDT, strong thunderstorms were located along a line
extending from 2 miles north of Vera to 4 miles northwest of
Verdigris to 5 miles south of Bixby. Movement was east at 25 mph.
Wind gusts up to 50 mph will be possible with these storms.
Locations in or near the path include...
Tulsa... Broken Arrow...
Sand Springs... Claremore...
Bristow... Owasso...
Bixby... Sapulpa...
Jenks... Glenpool...
Coweta... Skiatook...
Catoosa... Collinsville...
Verdigris... Haskell...
Chelsea... Inola...
Kiefer... Beggs...
This includes Interstate 44 between mile markers 193 and 260.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3625 9543 3568 9548 3570 9646 3627 9615
3658 9616 3659 9543
TIME...MOT...LOC 2247Z 267DEG 24KT 3649 9587 3628 9574 3586 9590
69The Tulsa radar (KINX), 47 km away, was scanning. The volume nearest the first event began at 23:08 UTC.
1 flash flood. Local standard time, as filed.
Portions of W 21st Street S were flooded between Chandler Park and the Arkansas River bridge.
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: 718573.