Thunderstorms developed into northeastern Oklahoma during the morning of the 18th, as a cold front moved into the area. The strongest storms produced damaging wind gusts.
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 into northeastern Oklahoma during the morning of the 18th, 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 Jun 18, 5:28 AM CST, 2 hours 37 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Tulsa OK
628 AM CDT Thu Jun 18 2026
...New AVIATION...
.KEY MESSAGES...
Updated at 625 AM CDT Thu Jun 18 2026
- Advisory level heat and humidity forecast across far SE OK
Thursday with heat index values near 105 in some spots.
- A relatively cooler and more unsettled weather pattern is
expected Thursday into Friday, with a limited severe weather risk
and some heavy rainfall potential that could lead to flash flooding.
- The unsettled weather pattern continues at least during portions
of the weekend into the early part of next week.
&&
.SHORT TERM...
(Through Thursday)
Issued at 1144 PM CDT Wed Jun 17 2026
A strong shortwave trough moving through the Great Lakes region is
forcing a frontal boundary south down the Plains today. The
synoptic front will eventually work its way into NE OK overnight
and then continue to progress south across the remainder of the
region through Thursday evening. The HRRR, RRFS and GFS develop
scattered showers and storms on the cool side of the front along
the elevated frontal zone during the day Thursday. There is some
uncertainty regarding location, with the HRRR and GFS developing
activity across NE OK and NW AR starting early Thursday morning,
and across southern KS, while the RRFS is not as aggressive with
the coverage over our area. These storms will pose a limited hail
threat. The 00Z HRRR has all storms across NE OK/NW AR dying off
after 15Z, and eventually shifts the southern KS elevated storm
band south into our area by evening. The RRFS shifts the band down
into our area faster. All the models agree that storm coverage
along the surface front during the afternoon will be pretty
limited, likely due to capping issues, though any storm that does
develop could become severe given plenty of instability, but
weaker shear.
Areas south of the front, especially far SE OK near the Red River,
have forecast afternoon heat indices near 105. A heat advisory has
been issued for Pushmataha and Choctaw counties. There will likely
be quite the north-south temp gradient across the forecast area
today. The latest guidance keeps temps in the 70s across portions of
NE OK where clouds and periodic rain hold temps back behind the
front.
Lacy
&&
.LONG TERM...
(Thursday Night through Wednesday)
Issued at 1144 PM CDT Wed Jun 17 2026
The front should settle down into the Red River Valley by Thursday
evening, and all models suggest a pretty unsettled night across
southern OK that night. The potential for slow-moving or training
storms is higher during this time frame, increasing the threat for
heavy rainfall and flash flooding. What happens as we go into Friday
is more uncertain. Some data has an MCS organizing Thursday night
and either tracking along or south of the Red River region into
Friday. The latest HRRR tracks this MCS east across a good portion
of our area Friday, while the GFS takes more it into TX. The
boundary lifts back north Saturday ahead of another shortwave trough
moving east over the central Rockies and into the Plains. While
shower and storm coverage does not look widespread, you can expect
some rain/storm chances. As the shortwave trough and associated
surface low progresses east over the central Plains Saturday night
into Sunday, a strong to severe MCS could progress southeast from
the High Plains and across the northern portions of the forecast
area (NE OK/NW AR). A cold front will settle down into the region
Sunday afternoon and night, with increasing shower and storm chances
that will likely linger into Monday. This looks like another window
where locally heavy rainfall that could lead to flash flooding will
be a higher threat.
Lacy
&&
.AVIATION...
(12Z TAFS)
Issued at 625 AM CDT Thu Jun 18 2026
Mainly VFR conditions will prevail through the forecast period,
although there may be a brief period of MVFR ceilings this
morning, especially at KMLC and KFSM. A few showers and perhaps an
isolated thunderstorm will be possible today, especially at the
northeast Oklahoma and far northwest Arkansas sites, but the
better shower and storm chances will hold off until later tonight.
&&
.PRELIMINARY POINT TEMPS/POPS...
TUL 80 68 85 71 / 60 40 20 40
FSM 92 72 86 72 / 20 50 40 40
MLC 93 72 87 73 / 20 70 50 60
BVO 74 64 84 68 / 70 30 10 50
FYV 83 66 85 69 / 50 50 20 30
BYV 79 64 83 66 / 70 40 10 30
MKO 84 69 84 71 / 30 50 30 40
MIO 77 64 85 68 / 70 30 0 40
F10 85 68 85 71 / 30 50 40 50
HHW 92 75 86 72 / 0 70 60 70
&&
.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Heat Advisory from 1 PM this afternoon to 7 PM CDT this evening
for OKZ049-053.
AR...None.
&&
SHORT TERM...30
LONG TERM....30
AVIATION...05Hazardous Weather Outlook
National Weather Service Tulsa OK
523 AM CDT Thu Jun 18 2026
ARZ001-002-010-011-119-120-129-219-220-229-OKZ049-053-055>071-
073>075-154-172-176-254-272-276-354-376-191030-
Benton-Carroll-Washington AR-Madison-Northern Crawford-
Northern Franklin-North and Central Sebastian-Southern Crawford-
Central and Southern Franklin-Southern Sebastian-Pushmataha-
Choctaw-Washington OK-Nowata-Craig-Ottawa-Pawnee-Tulsa-Rogers-
Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-Cherokee-Adair-
Muskogee-McIntosh-Pittsburg-Haskell-Latimer-Western Osage-
Northern Sequoyah-Northern Le Flore-Northeast Osage-
Central and Southern Sequoyah-Central Le Flore-Southeast Osage-
Southern Le Flore-
523 AM CDT Thu Jun 18 2026
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...Eastern Oklahoma and Northwest Arkansas.
ONSET...Ongoing.
HEAVY RAIN.
RISK...Limited.
AREA...Eastern Oklahoma and Northwest Arkansas.
ONSET...Mainly Tonight.
DANGEROUS HEAT.
RISK...Elevated.
AREA...Southeast Oklahoma and West Central Arkansas.
ONSET...This Afternoon.
DISCUSSION...
A cold front will move slowly south across the area today into
this evening. Scattered showers and thunderstorms will occur near
and north of the front today and tonight, with a limited severe
weather threat in the form of large hail and damaging winds.
Locally heavy rainfall will also be possible, especially tonight
when storm coverage will likely be greatest.
Ahead of the front, heat index values will climb into the 100 to
105 degree range this afternoon across parts of southeast
Oklahoma and west central Arkansas.
SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
FRIDAY...Thunderstorm Potential.
SATURDAY...Thunderstorm Potential...High Wind Potential.
SUNDAY...Severe Thunderstorm Potential...High Wind Potential...
Dangerous Heat Potential...Heavy Rain Potential.
MONDAY through WEDNESDAY...Thunderstorm Potential.
EXTENDED DISCUSSION...
An unsettled weather pattern will continue over the next week,
with near daily shower and thunderstorm chances. Some severe
weather threat will exist most days, along with the threat for
locally heavy rainfall. Current indications are that Sunday
afternoon and evening may be the time period with the greatest
threat for severe weather and locally heavy rainfall.
weather.gov/tulsa contains additional information.Special Weather Statement
National Weather Service Tulsa OK
713 AM CDT Thu Jun 18 2026
OKZ154-181245-
Western Osage OK-
713 AM CDT Thu Jun 18 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL OSAGE COUNTY
THROUGH 745 AM CDT...
At 713 AM CDT, Doppler radar indicated a strong thunderstorm 3 miles
east of Hardy, moving southeast at 20 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down small tree limbs and blow
around unsecured objects. Minor hail damage to vegetation
is possible.
Locations in or near the path include...
Shidler... Grainola...
Foraker... Webb City...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3700 9639 3692 9640 3671 9662 3685 9676
3686 9675 3700 9675
TIME...MOT...LOC 1213Z 306DEG 19KT 3699 9673
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPHSpecial Weather Statement
National Weather Service Tulsa OK
745 AM CDT Thu Jun 18 2026
OKZ154-254-181315-
Western Osage OK-Northeast Osage OK-
745 AM CDT Thu Jun 18 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL OSAGE COUNTY
THROUGH 815 AM CDT...
At 745 AM CDT, Doppler radar indicated a strong thunderstorm 4 miles
northeast of Foraker, moving east at 25 mph.
HAZARD...Wind gusts up to 50 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down small tree limbs and blow
around unsecured objects. Minor hail damage to vegetation
is possible.
Locations in or near the path include...
Elgin... Grainola...
Foraker... Pearsonia...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3700 9617 3675 9637 3692 9673 3700 9667
TIME...MOT...LOC 1245Z 290DEG 20KT 3692 9652
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPHSpecial Weather Statement
National Weather Service Tulsa OK
811 AM CDT Thu Jun 18 2026
OKZ154-254-181345-
Western Osage OK-Northeast Osage OK-
811 AM CDT Thu Jun 18 2026
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN OSAGE COUNTY
THROUGH 845 AM CDT...
At 811 AM CDT, Doppler radar indicated a strong thunderstorm 6 miles
northeast of Pearsonia, moving southeast at 20 mph.
HAZARD...Wind gusts up to 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down small tree limbs and blow
around unsecured objects. Minor hail damage to vegetation
is possible.
Locations in or near the path include...
Bigheart... Sunset Lake...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3685 9649 3698 9642 3692 9612 3673 9626
TIME...MOT...LOC 1311Z 294DEG 16KT 3688 9638
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPHSpecial Weather Statement
National Weather Service Tulsa OK
847 AM CDT Thu Jun 18 2026
OKZ059-154-181415-
Western Osage OK-Pawnee OK-
847 AM CDT Thu Jun 18 2026
...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL OSAGE AND
NORTHWESTERN PAWNEE COUNTIES THROUGH 915 AM CDT...
At 846 AM CDT, Doppler radar indicated a strong thunderstorm 4 miles
northeast of Marland, moving east at 20 mph.
HAZARD...Wind gusts up to 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down small tree limbs and blow
around unsecured objects. Minor hail damage to vegetation
is possible.
This storm will remain over mainly rural areas of west central Osage
and northwestern Pawnee Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 3669 9705 3668 9694 3670 9693 3670 9678
3645 9683 3648 9703 3651 9703 3651 9701
3653 9700 3653 9696 3655 9692 3655 9690
3658 9689 3660 9692 3658 9698 3659 9705
3660 9704 3668 9706
TIME...MOT...LOC 1346Z 275DEG 19KT 3660 9709
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPHSpecial Weather Statement
National Weather Service Tulsa OK
900 AM CDT Thu Jun 18 2026
OKZ055>058-061>063-181430-
Craig OK-Rogers OK-Delaware OK-Ottawa OK-Nowata OK-Washington OK-
Mayes OK-
900 AM CDT Thu Jun 18 2026
...STRONG THUNDERSTORMS WILL IMPACT CRAIG...NORTHERN ROGERS...
NORTHWESTERN DELAWARE...OTTAWA...NORTHWESTERN MAYES...CENTRAL
WASHINGTON AND NOWATA COUNTIES THROUGH 930 AM CDT...
At 859 AM CDT, Doppler radar indicated strong thunderstorms along a
line extending from 4 miles northeast of Edna to 4 miles east of
Delaware to 5 miles west of Watova. Movement was east at 40 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down small tree limbs and blow
around unsecured objects.
Locations in or near the path include...
Miami... Vinita...
Baxter Springs... Nowata...
Commerce... Chelsea...
Fairland... Afton...
Quapaw... Adair...
Welch... Delaware...
Bluejacket... Lenapah...
Big Cabin... Treece...
New Alluwe... Watova...
White Oak... Narcissa...
This includes Interstate 44 between mile markers 268 and 323.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3669 9486 3643 9519 3662 9593 3681 9568
3700 9551 3700 9462
TIME...MOT...LOC 1359Z 279DEG 35KT 3709 9529 3679 9556 3664 9575
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
MejiaThe Tulsa radar (KINX), 63 km away, was scanning. The volume nearest the first event began at 14:04 UTC.
1 thunderstorm wind. Local standard time, as filed.
The Oklahoma Mesonet station near Nowata measured thunderstorm wind gusts up to 65 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2026Every state in 2026This day in weather historyWarnings in Oklahoma, June 2026
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: 1342430.