Numerous thunderstorms along a stalled outflow boundary produced heavy rainfall and isolated severe wind gusts across southern Oklahoma and adjacent western North Texas on the evening of the 20th.
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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 OUN wrote it up.
Numerous thunderstorms along a stalled outflow boundary produced heavy rainfall and isolated severe wind gusts across southern Oklahoma and adjacent western North Texas on the evening of the 20th.
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 Norman, OK wrote its last area forecast discussion before the first event at Sep 20, 11:34 AM CST, 1 hour 36 minutes earlier.
Area Forecast Discussion National Weather Service Norman OK 1234 PM CDT Fri Sep 20 2019 .AVIATION... MVFR to IFR ceilings may be in and out, though the general trend should be to improve through the afternoon. Thunderstorms developing in north Texas are expected to expand in coverage through the afternoon, making their way into southern Oklahoma. Highlighted the most likely periods for storms to impact airports in the TAFs, but scattered storms may impact sites outside of these periods as well. Later tonight additional storms may come out of the panhandles affecting western north Texas and western Oklahoma. Ceilings are expected to deteriorate again late tonight toward Saturday morning. Storm chances continue into Saturday, though not enough confidence to mention at any particular TAF site at this point. Day && .PREV DISCUSSION... /issued 627 AM CDT Fri Sep 20 2019/ DISCUSSION... The 12Z aviation discussion follows.... AVIATION... A messy cloud/precipitation pattern over Oklahoma and north Texas this morning is a precursor of similarly messy convective activity this afternoon and tonight. With a broad area of lift and moisture, rain and drizzle are common this morning, but with no discernible pattern. So...the forecast is more or less an average of expected conditions. Thunderstorms are expected this afternoon through tonight, with most of the storms in western Oklahoma and adjacent parts of Texas. The main storm area shifts to more of a KCSM- KEND/KGOK-KPNC/KSWO core tonight, with lower chances to the northwest and southeast of that area. Light winds this morning will increase from the south during the day, and (especially in the west) will remain at daytime speeds into the night tonight. CmS PREV DISCUSSION... /issued 320 AM CDT Fri Sep 20 2019/ DISCUSSION... Beginning of an active period starts today as tropical moisture makes its way north into parts of the area and multiple troughs impact the Southern Plains. This morning we are already seeing low level moisture and associated showers/drizzle/fog move across southern/southeastern Oklahoma into central Oklahoma. This will continue today as well as spread farther north. Meanwhile across western sections, models show an embedded wave ejecting northeast out of the larger scale western trough this afternoon and evening. This will result in an increase in showers and thunderstorms in those areas. A few strong storms appear possible across far western Oklahoma late today. Pacific moisture plume remains over the area Saturday, which should keep at least a chance of rain and storms around. However, better rain chances will occur as we go through Saturday night and Sunday as larger trough makes its way east through the Plains and a surface front drops south into the area. Moisture levels remain rather high throughout the weekend, so this activity will be efficient rain producers and heavy rainfall will be a concern. A few strong to severe storms will also be possible. Front will stall across the Red River valley Monday before lifting back north and will be a focus for additional shower/thunderstorms. As we go into next week models show a shortwave trough dropping into southwest and closing off. They continue however, to differ on timing off its eastward progression into the Southern Plains, but with either solution rain chances will continue at least through the middle of next week. No real change in airmass is expected through this forecast period, however more extensive cloud cover and precipitation will keep temperatures cooler and closer to seasonal norms. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 83 71 84 70 / 30 40 30 30 Hobart OK 88 71 87 70 / 50 60 40 40 Wichita Falls TX 90 72 90 72 / 60 40 30 20 Gage OK 86 68 88 64 / 50 60 30 40 Ponca City OK 78 71 82 69 / 40 30 50 60 Durant OK 85 71 88 71 / 80 40 10 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && 14/06/14
Hazardous Weather Outlook National Weather Service Norman OK 1240 PM CDT Fri Sep 20 2019 OKZ004>048-050>052-TXZ083>090-211115- Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield- Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne- Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson- Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton- Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman- Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay- 1240 PM CDT Fri Sep 20 2019 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Through Tonight... .Thunderstorms... Showers and thunderstorms will continue to develop across southern and western Oklahoma and western north Texas through the afternoon. Additional storms will form across western Texas with a general movement to the northeast. A few strong storms will be possible through this evening, especially across southwest Oklahoma and western north Texas. Some o the storms will also produce torrential downpours which may result in areas of flooding. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... .Thunderstorms... Showers and thunderstorms will be possible across at least portions of the area through the middle of next week. Locally heavy rain will be the main concern throughout much of that time. However, a few strong to severe storms will be possible both Saturday and Sunday. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
116 PM CDT Fri Sep 20 2019
OKZ051-052-201845-
Marshall OK-Bryan OK-
116 PM CDT Fri Sep 20 2019
...SIGNIFICANT WEATHER ADVISORY FOR east central Marshall and
northwestern Bryan Counties Until 145 PM CDT...
AT 114 PM CDT, a strong thunderstorm was located near Durant, moving
east at 15 MPH.
HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...
Locations impacted include...
Durant, Caddo, Silo, Mead, Armstrong, Blue, Utica, eastern Lake
Texoma and Calera.
LAT...LON 3383 9624 3389 9659 3390 9659 3389 9661
3390 9664 3412 9651 3411 9646 3413 9645
3415 9615
TIME...MOT...LOC 1814Z 267DEG 13KT 3397 9640
MADSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 153 PM CDT Fri Sep 20 2019 TXZ087-088-201930- Knox TX-Baylor TX- 153 PM CDT Fri Sep 20 2019 ...SIGNIFICANT WEATHER ADVISORY FOR east central Knox and southwestern Baylor Counties Until 230 PM CDT... AT 150 PM CDT, a strong thunderstorm was located near Bomarton, moving east at 15 MPH. HAZARDS INCLUDE... Hail up to one-half inch diameter... Wind gusts to 50 MPH... Locations impacted include... Seymour, Red Springs and Bomarton. LAT...LON 3344 9951 3363 9952 3369 9917 3342 9916 TIME...MOT...LOC 1850Z 267DEG 13KT 3355 9941 MAD
The Norman radar (KTLX), 134 km away, was scanning. The volume nearest the first event began at 19:09 UTC.
1 flood, 1 flash flood. Local standard time, as filed.
Flooding was reported at 900 N Kemp Avenue.
Water over multiple roads. Report of water halfway up the door of a jeep. Time estimated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2019Every state in 2019This day in weather historyWarnings in Oklahoma, September 2019
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: 854785, 854812.