A cold front moved slowly through eastern Oklahoma on April 25th and 26th. 5 to 3 inch rainfall amounts, and areas of up to 4 inch amounts across east central and northeastern Oklahoma.
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.
A cold front moved slowly through eastern Oklahoma on April 25th and 26th. Periods of showers and thunderstorms occurred across the area as the front pushed through the region, resulting in widespread 1.5 to 3 inch rainfall amounts, and areas of up to 4 inch amounts across east central and northeastern Oklahoma. This excessive rainfall, on the heels of heavy rain from several days earlier, resulted in moderate flooding along the Illinois River near Watts and Tahlequah.
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 Apr 26, 5:50 PM CST, 55 minutes earlier.
Area Forecast Discussion National Weather Service Tulsa OK 650 PM CDT Wed Apr 26 2017 .AVIATION... CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG. IFR conditions for far Northwest Arkansas...MVFR for much of Eastern Oklahoma and West Central Arkansas to VFR conditions spreading into far Northeast Oklahoma will continue to shift eastward tonight. The result looks to be VFR conditions across most of the CWA after midnight tonight...though some IFR conditions could build back westward early Thursday morning across Northwest Arkansas. Any lingering low ceilings/visibilities look to lift back to VFR by late morning as high level ceilings begin to increase over the CWA from the west. Winds tonight look to become light and variable and then shift out of the southeast Thursday Afternoon. && .PREV DISCUSSION... /Issued 320 PM CDT Wed Apr 26 2017/ DISCUSSION... A significant heavy rain and flood event expected to unfold Friday night and into the weekend with 3 to 7 inches of rain common with locally higher amounts possible. The axis of heaviest rain looks to be south and east of Interstate 44. These amounts of rain will lead to widespread flash flooding and increased main-stem river flooding. A flood watch for this time frame will likely be issued later Tonight or Thursday morning. As for Tonight, patchy light rain will be possible early this evening across far eastern Oklahoma and western Arkansas as a mid- level shortwave currently over central Oklahoma moves across the region. Temperatures Tonight are expected to be about 10 degrees below normal with readings generally in the upper 30s to lower 40s. The area will be between systems on Thursday. However, southerly winds will begin to increase as the next storm system takes shape in the lee of the Rockies. The chances of showers and thunderstorms will increase Thursday night across northern Oklahoma and northwest Arkansas as a mid-level shortwave moves across the central Plains and isentropic lift increases north of a warm front lifting into southern Oklahoma. On Friday, the warm front will continue to lift north before becoming quasi-stationary near Interstate 40. This will set the stage for the potential for severe weather Friday evening into Friday night as a cold front slowly moves into the increasingly unstable airmass and as a mid-level low over the Four Corners Region exerts greater influence over the area. Thunderstorms are expected to begin to develop late Friday afternoon in the vicinity of the cold front and spread into eastern Oklahoma and western Arkansas during the evening hours. These storms will have the greatest potential to become severe with Large hail and damaging winds the main concern. However, tornadoes will be possible as well. The event morphs more into a heavy rain and flood event late Friday night and on Saturday as the frontal boundary lingers across the region and the Four Corners mid-level low slowly pulls out into the Plains. The showers and thunderstorms come to an end by Sunday evening as the mid-level low pulls off to the northeast of the area. Dry weather is expected Monday and Tuesday as high pressure prevails. The chances of showers and thunderstorms return Tuesday night into Wednesday as the next storm system approaches from the west. && .PRELIMINARY POINT TEMPS/POPS... TUL 41 68 55 76 / 10 10 40 20 FSM 43 71 57 81 / 20 0 20 30 MLC 41 72 59 78 / 0 0 10 30 BVO 39 67 51 74 / 10 10 50 20 FYV 40 68 56 76 / 20 10 30 30 BYV 41 67 55 74 / 20 0 40 30 MKO 41 70 56 76 / 10 10 30 30 MIO 39 67 53 74 / 20 10 60 30 F10 42 70 58 76 / 10 20 20 30 HHW 43 72 58 79 / 0 0 10 30 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && AVIATION...20
Hazardous Weather Outlook National Weather Service Tulsa OK 508 PM CDT Wed Apr 26 2017 ARZ001-002-010-011-019-020-029-OKZ049-053>076-271000- 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 Wed Apr 26 2017 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...Tonight. No Hazardous weather is expected at this time. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Spotter Activation Not Expected. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THURSDAY...Thunderstorm Potential...High Wind Potential. FRIDAY...Thunderstorm Potential...High Wind Potential...Heavy Rain Potential. SATURDAY...Thunderstorm Potential...Heavy Rain Potential. SUNDAY through TUESDAY...No Hazards. EXTENDED DISCUSSION... There will be a brief lull in thunderstorms into Thursday between weather systems. Additional storms may form Thursday evening as the next low pressure system approaches. On Friday, a warm front will move north across central and eastern Oklahoma and be a focus for strong to severe thunderstorms. The airmass may remain capped much of the afternoon on Friday, with the better chance for storms developing by late afternoon into early evening. Strong deep layer wind shear and moderate instability will support supercells capable of large hail, damaging winds and tornadoes across much of the Southern Plains. Eventually, these late afternoon and evening storms will form a large complex of storms, with the potential for heavy rain. Flooding is becoming an increasing concern for this weekend's upcoming storm system. It now appears that 6-7 inches of rain is possible for parts of southeast Oklahoma into western Arkansas with isolated higher amounts. This will cause river flooding as well as flash flooding. EMERGENCY MANAGEMENT PLANNING STATEMENT... Continue to follow the latest updates regarding the expected hazardous weather this week. weather.gov/tulsa Contains additional information.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
420 PM CDT WED APR 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0125 AM TSTM WND DMG 1 N BEAVER 36.49N 93.77W
04/26/2017 CARROLL AR PUBLIC
NUMEROUS TREES DOWN AND SOME DAMAGE TO ROOFS IN AND
AROUND HOLIDAY ISLAND
&&
SFPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
424 PM CDT WED APR 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1137 PM TORNADO 3 SW ADAIR 36.41N 95.31W
04/25/2017 MAYES OK NWS STORM SURVEY
A SECOND TORNADO PATH NEAR ADAIR IS BEING SURVERYED BY A
NWS TEAM. THE RATING PROCESS IS INCOMPLETE. THE INITIAL
RATING IS EF-1.
&&
SFPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
430 PM CDT WED APR 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0106 AM TSTM WND DMG ROGERS 36.33N 94.12W
04/26/2017 BENTON AR PUBLIC
WIND ESTIMATED TO 65 MPH 2.25 MILES SOUTH OF THE ROGERS
AIRPORT...TREES DOWN IN THE AREA
&&
SFPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
431 PM CDT WED APR 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0105 AM TSTM WND DMG 5 ESE BELLA VISTA 36.40N 94.15W
04/26/2017 BENTON AR PUBLIC
SMALL TREE DOWN ON A HOUSE...NUMEROUS LARGE LIMBS DOWN
&&
SFPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
455 PM CDT WED APR 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1112 PM TSTM WND DMG 3 E OWASSO 36.27N 95.80W
04/25/2017 ROGERS OK NWS EMPLOYEE
LARGE TREE LIMBS DOWN
&&
SFPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
457 PM CDT WED APR 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1208 AM HAIL 1 N STIDHAM 35.38N 95.70W
04/26/2017 E1.00 INCH MCINTOSH OK PUBLIC
&&
SFPThe national radar mosaic for the moment the first event began.
2 flood. Local standard time, as filed.
The Illinois River near Watts rose above its flood stage of 13 feet at 7:45 pm CDT on April 26th. The river crested at 19.58 feet at 2:00 am CDT on the 27th, resulting in moderate flooding. The river fell below flood stage at 11:30 am CDT on the 27th.
The Illinois River near Tahlequah rose above its flood stage of 11 feet at 11:30 am CDT on April 27th. The river crested at 15.18 feet at 1:00 am CDT on the 28th, resulting in moderate flooding. The river fell below flood stage at 8:30 am CDT on the 28th.
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, April 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: 696334, 696335.