Thunderstorms developed into eastern Oklahoma during the afternoon hours of the 17th as a cold front moved into the area. The strongest storms produced damaging wind gusts.
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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 into eastern Oklahoma during the afternoon hours of the 17th as a cold front moved into the area. The strongest storms produced damaging wind gusts.
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 Sep 17, 2:12 PM CST, 8 minutes earlier.
Area Forecast Discussion National Weather Service Tulsa OK 312 PM CDT Sun Sep 17 2017 .DISCUSSION... Multiple rounds of showers and thunderstorms continue to impact parts of northeast OK and northwest AK this afternoon. This activity has an obvious tropical tap on water vapor imagery...with plume of moisture from tropical storm Norma stretching through TX into OK. Localized rainfall amounts around 1-2" have occurred so far. The rain-cooled air has resulted in a well-defined outflow/differential heating boundary rough along the I-40 corridor...and we're monitoring recently developed strong convection near this feature. The atmosphere is quite unstable and rather meager shear suggests that strong/severe winds will be the main threat...along with some hail. This activity should begin to weaken this evening with the loss of heating. Short term models continue to show additional convection developing to our west overnight...and making a run toward the forecast area. Confidence isn't overly high with this scenario...and any activity would likely be weakening as it reaches our area. Have maintained low chance PoPs...mainly for northeast OK/northwest AR. Any leftover boundaries should dissipate or lift north later Monday as southerly flow returns. The upper pattern will become increasingly amplified by mid-late week as a deep longwave trof develops across the western states. Modestly increasing mid-level heights/temps should generally keep convection at bay...with any synoptic boundaries remaining to our west. Aforementioned trof will make some progress east going into next weekend...and have kept low end PoPs in the forecast for now. && .PRELIMINARY POINT TEMPS/POPS... TUL 70 90 71 92 / 30 30 20 20 FSM 69 91 70 92 / 10 10 10 20 MLC 69 91 72 92 / 20 0 10 10 BVO 69 87 68 92 / 40 40 20 20 FYV 67 87 67 87 / 20 10 10 20 BYV 67 87 68 88 / 20 20 20 20 MKO 68 89 70 91 / 20 20 10 20 MIO 68 85 67 90 / 40 30 20 20 F10 70 90 71 92 / 20 20 10 10 HHW 69 91 71 91 / 0 0 0 10 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && LONG TERM....18
Hazardous Weather Outlook National Weather Service Tulsa OK 1253 PM CDT Sun Sep 17 2017 ARZ001-002-010-011-019-020-029-OKZ049-053>076-181030- 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- 1253 PM CDT Sun Sep 17 2017 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...Today and Tonight. SEVERE THUNDERSTORM. RISK...Limited. AREA...Northeast Oklahoma and extreme northwest Arkansas. ONSET...Ongoing. HEAVY RAIN. RISK...Limited. AREA...Northeast Oklahoma and extreme northwest Arkansas. ONSET...Ongoing. DISCUSSION... A plume of deep subtropical moisture remains in place from southwest Oklahoma into northwest Arkansas this afternoon. Scattered thunderstorms will continue to develop within the moist axis today, with a few strong to severe storms possible through the afternoon. The main hazards will be from strong or damaging wind gusts and brief heavy downpours. A storm complex may develop to the west this evening and impact parts of eastern Oklahoma late tonight, however these storms will likely be weakening as they approach the area. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Local Spotter Activation May Be Needed. .DAYS TWO THROUGH SEVEN...Monday through Saturday. MONDAY...Thunderstorm Potential. TUESDAY...Thunderstorm Potential...High Wind Potential. WEDNESDAY through THURSDAY...No Hazards. FRIDAY through SATURDAY...Thunderstorm Potential. EXTENDED DISCUSSION... By Monday, the front will lift back north across Kansas, with a low chance for storms early in the day across northeast Oklahoma. Southwest flow aloft will support an unsettled weather pattern for much of the week, but the highest chance for any rain and storms will be Monday and Tuesday. By mid week, a building mid level ridge will likely strengthen the cap, limiting thunderstorm development on Wednesday and Thursday. Storm chances will return by the end of the week as an upper level low in the western states moves a bit closer to the area. weather.gov/tulsa contains additional information.
Special Weather Statement National Weather Service Tulsa OK 138 PM CDT SUN SEP 17 2017 ARZ010-171915- Washington AR- 138 PM CDT SUN SEP 17 2017 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL WASHINGTON COUNTY UNTIL 215 PM CDT... At 137 PM CDT, a strong thunderstorm was located over Farmington, moving southeast at 15 mph. Wind gusts up to 50 mph will be possible with this storm. Locations in or near the path include... Fayetteville... Farmington... Prairie Grove... Elkins... West Fork... Greenland... Brentwood... Johnson... Black Oak... Walnut Grove... Prairie Grove Battlefield State... Tuttle... Sulphur City... Woolsey... Hicks... Wheeler... Viney Grove... Hogeye... This includes Interstate 49 between mile markers 48 and 68. This storm 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 3599 9436 3615 9425 3605 9395 3581 9412 TIME...MOT...LOC 1837Z 301DEG 15KT 3604 9423
Special Weather Statement
National Weather Service Tulsa OK
241 PM CDT SUN SEP 17 2017
OKZ065-066-172030-
Okmulgee OK-Okfuskee OK-
241 PM CDT SUN SEP 17 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN OKMULGEE AND
SOUTHEASTERN OKFUSKEE COUNTIES UNTIL 330 PM CDT...
At 241 PM CDT, a strong thunderstorm was located 4 miles west of
Henryetta, moving northeast at 25 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations in or near the path include...
Okmulgee... Henryetta...
Dewar... Schulter...
Grayson... Hoffman...
Clearview... Pharoah...
Bryant...
This includes Interstate 40 in Oklahoma between mile markers 225 and
243.
LAT...LON 3562 9591 3548 9582 3546 9582 3546 9587
3543 9588 3534 9618 3548 9625
TIME...MOT...LOC 1941Z 242DEG 21KT 3545 9605The Tulsa radar (KINX), 92 km away, was scanning. The volume nearest the first event began at 20:17 UTC.
1 thunderstorm wind. Local standard time, as filed.
Strong thunderstorm wind blew out five industrial sized garage doors of a county storage barn, snapped numerous tree limbs, and damaged another barn.
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, September 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: 721059.