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Washington County, OK hail & severe wind history
182 storm reports on file for Washington County between 2010-04-02 and 2026-05-08 — 85 hail and 97 severe thunderstorm wind. That averages 10.7 reports a year, and Apr is the busiest month.
Hail reports
85
5 per year
Largest hail
2.5"
tennis ball size · 2019-05-22
Strongest gust
87 mph
76 kt · 2016-04-26
Reported damage
$2.5M
property + crop, as filed
Storm days
92
distinct days with a report
Busiest year
2018
21 reports
Search every Washington County report
Filter the full record below — pick a year, narrow to a month, or drag the hail-size slider to see only the storms big enough to dent a roof (1" and up is the usual threshold insurers care about).
182 of 182 reports match.
Reports by month for the current filter — the shape of Washington County’s storm season.
| Date | Type | Size / gust | Nearest location | Report detail |
|---|---|---|---|---|
| 2026-05-08 16:05 | Hail | 1" quarter | 4.77 mi SW of Ramona | Hail up to quarter size covered the ground. |
| 2026-05-08 16:10 | Wind | 52 kt 60 mph | 4.77 mi SW of Ramona | Strong thunderstorm wind snapped large tree limbs. |
| 2026-04-28 11:11 | Hail | 1" quarter | 2 mi SE of Bartlesville | No narrative filed · source: Public |
| 2026-04-28 11:26 | Hail | 1.25" half dollar | 2.14 mi SE of Bartlesville | Half dollar size hail damaged homes and vehicles. |
| 2026-04-28 11:27 | Hail | 1" quarter | 3 mi SE of Bartlesville | No narrative filed · source: Public |
| 2026-04-28 11:30 | Hail | 1.25" half dollar | 1 mi ESE of Dewey | Half dollar size hail damaged homes and vehicles. |
| 2026-04-15 13:25 | Hail | 1" quarter | 0 mi N of Ochelata | No narrative filed · source: Social Media |
| 2026-04-15 15:32 | Hail | 1.75" golf ball | 1.92 mi ESE of Bartlesville | Golf ball size hail damaged homes, businesses, and vehicles. |
| 2026-04-15 15:32 | Hail | 1" quarter | 0 mi N of Bartlesville | No narrative filed · source: Amateur Radio |
| 2026-04-15 15:34 | Hail | 2" hen egg | 4.89 mi ESE of Bartlesville | Hail up to two inches in diameter damaged homes and vehicles. |
| 2026-04-15 15:34 | Hail | 1.5" ping pong | 2.9 mi SE of Hi Way Arpt | Ping pong ball size hail damaged homes and vehicles. |
| 2025-06-17 20:20 | Wind | 52 kt 60 mph | 10 mi S of Bartlesville | Thunderstorm wind gusts were estimated to 60 mph. |
| 2025-06-17 20:27 | Hail | 1.75" golf ball | 1.01 mi W of Copan | Golf ball size hail damaged homes and vehicles. |
| 2025-06-17 23:28 | Wind | 56 kt 64 mph | 1.07 mi E of Bartlesville | Strong thunderstorm wind blew down power lines. |
| 2025-06-17 23:30 | Wind | 65 kt 75 mph | .33 mi SW of Dewey | Strong thunderstorm wind blew down a large tree onto a house and privacy fence. |
| 2025-06-17 23:34 | Wind | 52 kt 60 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured thunderstorm wind gusts to 60 mph. |
| 2025-06-17 23:35 | Wind | 56 kt 64 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured thunderstorm wind gusts from 60 mph to 64 mph for over five minutes. |
| 2025-05-24 04:27 | Wind | 70 kt 81 mph | 1.24 mi ESE of Bartlesville | Strong thunderstorm wind blew down trees, blew portions of a roof from a building, and blew down power lines. |
| 2025-05-19 15:44 | Wind | 56 kt 64 mph | 2 mi SE of Bartlesville | Strong thunderstorm wind snapped numerous large tree limbs. |
| 2025-05-19 15:45 | Hail | 1" quarter | 8 mi SE of Dewey | No narrative filed · source: Social Media |
| 2025-05-19 15:55 | Wind | 54 kt 62 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 62 mph thunderstorm wind gusts. |
| 2025-05-17 23:24 | Hail | 0.75" penny | 3 mi NW of Copan | No narrative filed · source: Storm Chaser |
| 2025-04-29 05:35 | Hail | 1.25" half dollar | 3 mi E of Bartlesville | Half dollar size hail damaged homes and vehicles. |
| 2024-05-15 20:39 | Hail | 0.75" penny | 0 mi N of Ochelata | No narrative filed · source: Trained Spotter |
| 2024-05-15 21:00 | Hail | 1.75" golf ball | 2.3 mi W of Vera | Golf ball size hail damaged vehicles. |
| 2024-05-15 21:03 | Hail | 1" quarter | 0 mi N of Vera | No narrative filed · source: Fire Department/Rescue |
| 2024-03-13 20:05 | Hail | 1" quarter | 7 mi ENE of Ochelata | No narrative filed · source: Public |
| 2024-02-22 00:24 | Hail | 0.75" penny | 4 mi E of Bartlesville | No narrative filed · source: Public |
| 2024-02-22 00:26 | Hail | 0.75" penny | 3.63 mi SSE of Dewey | No narrative filed · source: Public |
| 2023-07-17 13:35 | Hail | 1" quarter | 3 mi WNW of Dewey | No narrative filed · source: Trained Spotter |
| 2023-07-17 13:40 | Hail | 1.5" ping pong | 1.01 mi ESE of Bartlesville | Ping pong ball size hail damaged vehicles and homes in Bartlesville. |
| 2023-07-17 13:44 | Hail | 1" quarter | 2 mi SE of Bartlesville | No narrative filed · source: Public |
| 2023-05-11 23:37 | Hail | 1" quarter | 3 mi NE of Ochelata | No narrative filed · source: Public |
| 2022-08-16 18:09 | Wind | 56 kt 64 mph | 3.93 mi WNW of Owen | Strong thunderstorm wind, estimated to be about 65 mph, snapped large tree limbs. |
| 2021-05-27 14:07 | Hail | 0.88" nickel | 0 mi N of Ochelata | No narrative filed · source: Emergency Manager |
| 2021-05-27 14:15 | Wind | 61 kt 70 mph | 0 mi N of Vera | Thunderstorm wind gusts were estimated to 70 mph. |
| 2021-03-17 04:06 | Hail | 0.75" penny | 1.31 mi ESE of Bartlesville | No narrative filed · source: Public |
| 2020-11-24 19:30 | Hail | 1.75" golf ball | 0 mi N of Bartlesville | Golf ball size hail damaged vehicles, businesses, and homes. |
| 2020-11-24 19:35 | Hail | 1.75" golf ball | .2 mi E of Copan | Golf ball size hail damaged vehicles and homes. |
| 2020-08-15 18:53 | Wind | 65 kt 75 mph | 1.18 mi ENE of Bartlesville | Strong thunderstorm wind blew down trees and power lines. |
| 2020-08-15 19:10 | Hail | 1" quarter | 1.79 mi NNE of Oglesby | No narrative filed · source: Emergency Manager |
| 2020-08-15 19:27 | Hail | 1" quarter | 3 mi E of Ochelata | No narrative filed · source: Trained Spotter |
| 2020-04-28 16:30 | Hail | 1" quarter | 1 mi N of Dewey | No narrative filed · source: Trained Spotter |
| 2020-04-28 16:30 | Hail | 0.75" penny | 5 mi N of Ochelata | No narrative filed · source: Public |
| 2020-04-28 16:30 | Wind | 61 kt 70 mph | 1 mi N of Dewey | Thunderstorm wind gusts were estimated to 70 mph. |
| 2020-04-28 16:39 | Wind | 52 kt 60 mph | 0 mi N of Ramona | Thunderstorm wind gusts were estimated to 60 mph. |
| 2020-04-27 11:45 | Hail | 0.75" penny | 4 mi SSE of Dewey | No narrative filed · source: Trained Spotter |
| 2020-04-24 15:43 | Hail | 1" quarter | 3.41 mi ESE of Bartlesville | No narrative filed · source: Broadcast Media |
| 2020-04-24 15:58 | Hail | 0.75" penny | 5.27 mi SSE of Dewey | No narrative filed · source: Emergency Manager |
| 2019-12-28 14:28 | Wind | 61 kt 70 mph | 1.11 mi SW of Copan | Strong thunderstorm wind snapped several power poles along Highway 10. |
| 2019-10-20 21:00 | Wind | 52 kt 60 mph | 2.95 mi ESE of Ochelata | Thunderstorm wind gusts were estimated to 60 mph at CR 3000 and Highway 75. |
| 2019-07-21 21:15 | Wind | 65 kt 75 mph | 2.1 mi SSE of Hi Way Arpt | Strong thunderstorm wind blew down trees in the Bartlesville area. |
| 2019-07-21 21:20 | Wind | 52 kt 60 mph | 1.27 mi ESE of Bartlesville | Strong thunderstorm wind snapped large tree limbs on Johnstone Avenue near downtown. |
| 2019-07-21 21:23 | Wind | 61 kt 70 mph | .4 mi ESE of Bartlesville | Strong thunderstorm wind blew down a tree onto a house, causing significant damage. |
| 2019-07-21 21:25 | Wind | 61 kt 70 mph | 1.8 mi SE of Bartlesville | Strong thunderstorm wind blew down a tree onto a car near the Bartlesville High School. |
| 2019-07-21 21:38 | Wind | 65 kt 75 mph | 1.51 mi ESE of Bartlesville | Strong thunderstorm wind blew down trees across the city. |
| 2019-07-05 15:20 | Wind | 56 kt 64 mph | .42 mi NNE of Bartlesville | Strong thunderstorm wind blew down a small tree and a privacy fence at a home on the northwest side of town. |
| 2019-05-22 17:13 | Hail | 2.5" tennis ball | 3 mi W of Vera | No narrative filed · source: Storm Chaser |
| 2019-05-22 17:51 | Hail | 0.75" penny | .96 mi ESE of Bartlesville | No narrative filed · source: Emergency Manager |
| 2019-04-17 22:01 | Hail | 1" quarter | 1.18 mi ESE of Bartlesville | No narrative filed · source: Emergency Manager |
| 2019-04-17 22:04 | Wind | 61 kt 70 mph | .23 mi E of Bartlesville | Strong thunderstorm wind blew down a tree. |
| 2019-04-17 22:05 | Wind | 56 kt 64 mph | 1.35 mi ENE of Bartlesville | Strong thunderstorm wind caused significant damage to park equipment, and damaged gutters and the roofs of homes. |
| 2019-04-17 22:05 | Wind | 61 kt 70 mph | 4 mi SSE of Dewey | Strong thunderstorm wind snapped power poles and large tree limbs. |
| 2019-04-17 22:10 | Wind | 51 kt 59 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 59 mph thunderstorm wind gusts. |
| 2018-08-16 16:00 | Wind | 52 kt 60 mph | 2 mi S of Copan | Thunderstorm wind gusts were estimated to 60 mph south of Copan. |
| 2018-07-30 14:28 | Wind | 56 kt 64 mph | 0 mi N of Ochelata | Strong thunderstorm wind blew down large tree limbs, some of which fell onto a house damaging the porch and roof. |
| 2018-07-30 14:34 | Wind | 61 kt 70 mph | 2 mi S of Ramona | Strong thunderstorm wind blew a tractor trailer off Highway 75. |
| 2018-07-30 14:37 | Wind | 65 kt 75 mph | 0 mi N of Ramona | Strong thunderstorm wind damaged the roof at the high school and blew down several power poles. |
| 2018-07-30 14:42 | Wind | 65 kt 75 mph | 0 mi N of Ramona | Thunderstorm wind gusts were estimated to 75 mph. |
| 2018-07-06 12:55 | Wind | 65 kt 75 mph | 1.11 mi W of Oglesby | Strong thunderstorm wind blew down trees near Oglesby. |
| 2018-06-26 14:00 | Wind | 61 kt 70 mph | .4 mi SW of Dewey | Strong thunderstorm wind snapped two power poles. |
| 2018-06-12 03:30 | Wind | 65 kt 75 mph | .85 mi SSE of Bartlesville | Strong thunderstorm wind blew down trees, damaged the roofs of homes, and snapped power poles in Bartlesville. Large tree limbs and downed trees blocked some roads in town. |
| 2018-06-12 03:30 | Wind | 61 kt 70 mph | .9 mi ESE of Bartlesville | Strong thunderstorm wind damaged a gas station in downtown Bartlesville. |
| 2018-06-12 03:34 | Wind | 52 kt 60 mph | 1.38 mi ESE of Bartlesville | Strong thunderstorm wind blew down large tree limbs. |
| 2018-06-12 03:42 | Wind | 52 kt 60 mph | 2 mi E of Ochelata | Thunderstorm wind gusts were estimated to 60 mph. |
| 2018-05-31 01:50 | Wind | 61 kt 70 mph | .3 mi SE of Copan | Strong thunderstorm wind blew down a large tree. |
| 2018-05-30 22:35 | Wind | 56 kt 64 mph | 0 mi N of Copan | Strong thunderstorm wind blew shingles off the roof of a house and damaged the siding. |
| 2018-05-19 14:40 | Wind | 61 kt 70 mph | .94 mi E of Bartlesville | Strong thunderstorm wind blew down billboards. |
| 2018-05-19 14:40 | Hail | 1.75" golf ball | 1 mi E of Bartlesville | No narrative filed · source: Emergency Manager |
| 2018-05-19 14:48 | Wind | 61 kt 70 mph | 4 mi W of Copan | Strong thunderstorm wind blew the awnings off several campers. |
| 2018-05-19 14:55 | Wind | 52 kt 60 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 60 mph thunderstorm wind gusts. |
| 2018-05-19 17:38 | Hail | 1" quarter | 1.44 mi E of Bartlesville | No narrative filed · source: Emergency Manager |
| 2018-05-14 22:10 | Wind | 65 kt 75 mph | .31 mi SE of Copan | Strong thunderstorm wind damaged road signs, damaged the roof of a church, and blew down power lines. |
| 2018-05-14 22:10 | Wind | 51 kt 59 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet Station near Copan measured 59 mph thunderstorm wind gusts. |
| 2018-04-13 14:38 | Hail | 1" quarter | 1 mi SE of Ochelata | No narrative filed · source: Emergency Manager |
| 2017-10-21 19:59 | Wind | 52 kt 60 mph | .39 mi SW of Dewey | Strong thunderstorm wind gusts were estimated to 60 mph. |
| 2017-08-10 18:19 | Wind | 61 kt 70 mph | 1 mi SSE of Copan | Strong thunderstorm wind gusts were estimated to 70 mph. |
| 2017-08-10 18:25 | Wind | 63 kt 72 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 73 mph thunderstorm wind gusts. |
| 2017-08-10 18:30 | Wind | 65 kt 75 mph | 2 mi E of Copan | Strong thunderstorm wind severely damaged the roofs of three homes east of Copan. |
| 2017-08-10 18:30 | Wind | 61 kt 70 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 70 mph thunderstorm wind gusts. |
| 2017-08-10 18:32 | Wind | 61 kt 70 mph | 1.03 mi SE of Copan | Strong thunderstorm wind was estimated to 70 mph. |
| 2017-08-10 18:35 | Wind | 56 kt 64 mph | 2.01 mi WNW of Dewey Wayside Arpt | Strong thunderstorm wind blew down power lines and snapped large tree limbs near the W1100 Road and Highway 75 intersection. |
| 2017-08-10 18:35 | Wind | 61 kt 70 mph | .39 mi SW of Dewey | Strong thunderstorm wind severely damaged a large metal barn. |
| 2017-08-10 18:36 | Wind | 61 kt 70 mph | 3.87 mi E of Copan | Strong thunderstorm wind was estimated to 70 mph. |
| 2017-08-10 18:36 | Wind | 61 kt 70 mph | .83 mi E of Copan | Strong thunderstorm wind blew down trees and power lines along Highway 10 and Highway 75. |
| 2017-08-10 18:40 | Wind | 56 kt 64 mph | 1.19 mi ENE of Dewey Wayside Arpt | Strong thunderstorm wind blew down power lines near W1100 Road and N 4000 Road. |
| 2017-08-10 19:01 | Wind | 61 kt 70 mph | 5.66 mi SSE of Dewey | Strong thunderstorm wind blew down trees across Highway 60 near the N 4000 Road. |
| 2017-08-04 04:30 | Hail | 0.88" nickel | 1.1 mi E of Bartlesville | No narrative filed · source: Public |
| 2017-06-15 20:20 | Wind | 65 kt 75 mph | 1.01 mi E of Bartlesville | Strong thunderstorm wind blew down trees. |
| 2017-05-27 17:51 | Hail | 1.25" half dollar | 1 mi S of (Bvo)Bartlesville Ar | No narrative filed · source: Trained Spotter |
| 2017-04-04 18:12 | Hail | 1" quarter | .9 mi SE of Owen | No narrative filed · source: Amateur Radio |
| 2017-03-06 21:15 | Hail | 1" quarter | 1.01 mi E of Bartlesville | No narrative filed · source: Emergency Manager |
| 2017-03-06 21:19 | Hail | 0.88" nickel | 2 mi ENE of Bartlesville | No narrative filed · source: Trained Spotter |
| 2017-03-06 21:20 | Wind | 56 kt 64 mph | 2 mi NNE of Dewey | Strong thunderstorm wind blew down a tree and several sections of a privacy fence. |
| 2017-02-28 23:10 | Hail | 1" quarter | 3 mi N of Copan | No narrative filed · source: Broadcast Media |
| 2016-05-09 21:02 | Hail | 1" quarter | 1.44 mi ESE of Bartlesville | No narrative filed · source: Storm Chaser |
| 2016-04-26 21:35 | Wind | 76 kt 87 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 88 mph thunderstorm wind gusts. The roofs of several homes were damaged and trees were uprooted in this area. |
| 2016-04-10 18:59 | Hail | 1" quarter | 3 mi NE of Copan | No narrative filed · source: County Official |
| 2016-04-10 19:37 | Hail | 1" quarter | 1.35 mi E of Bartlesville | No narrative filed · source: Public |
| 2016-04-10 19:40 | Hail | 1.75" golf ball | .75 mi SE of Hi Way Arpt | No narrative filed · source: Emergency Manager |
| 2016-04-10 19:44 | Hail | 1" quarter | .98 mi SSW of Dewey | No narrative filed · source: Post Office |
| 2016-04-10 19:47 | Hail | 0.88" nickel | .41 mi SW of Dewey | No narrative filed · source: Trained Spotter |
| 2016-03-30 16:30 | Hail | 1" quarter | .37 mi SE of Copan | No narrative filed · source: Broadcast Media |
| 2015-11-17 03:35 | Wind | 55 kt 63 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 63 mph thunderstorm wind gusts. |
| 2015-11-05 11:54 | Hail | 1" quarter | 1.28 mi E of Bartlesville | No narrative filed · source: Public |
| 2015-11-05 12:05 | Hail | 0.88" nickel | .42 mi SW of Dewey | No narrative filed · source: Public |
| 2015-08-27 09:20 | Hail | 1" quarter | .47 mi SW of Dewey | No narrative filed · source: Law Enforcement |
| 2015-05-16 21:45 | Wind | 52 kt 60 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 60 mph thunderstorm wind gusts. |
| 2015-05-16 21:45 | Wind | 56 kt 64 mph | 0 mi N of Vera | Thunderstorm wind gusts were estimated to 65 mph. |
| 2015-04-08 13:37 | Hail | 0.75" penny | 0 mi N of Bartlesville | No narrative filed · source: Public |
| 2015-04-02 19:24 | Hail | 1" quarter | .31 mi SE of Copan | No narrative filed · source: Broadcast Media |
| 2015-04-01 02:40 | Hail | 1.25" half dollar | 8 mi ESE of Bartlesville | No narrative filed · source: Public |
| 2014-10-01 13:45 | Hail | 1.75" golf ball | .35 mi ESE of Copan | No narrative filed · source: Emergency Manager |
| 2014-10-01 13:50 | Wind | 52 kt 60 mph | 1.28 mi SSE of Dewey Wayside Arpt | Strong thunderstorm wind blew down large tree limbs. |
| 2014-09-01 20:25 | Wind | 70 kt 81 mph | 2.52 mi E of Bartlesville | Emergency management personnel measured thunderstorm wind gusts to 80 mph. A hospital, a school, and an apartment complex sustained major damage to their roofs due to the strong wind. Nearly 600 homes were also damaged by the wind, about 100 of which had major damage. Numerous trees and large tree limbs were blown dow… |
| 2014-09-01 20:45 | Wind | 61 kt 70 mph | 6 mi E of Dewey | Strong thunderstorm wind blew shingles from the roofs of homes and peeled off the roof of a barn. |
| 2014-06-05 07:12 | Wind | 52 kt 60 mph | 0 mi N of Bartlesville | Strong thunderstorm wind blew down large tree limbs. |
| 2014-05-09 03:00 | Hail | 1" quarter | 2 mi N of Bartlesville | No narrative filed · source: Trained Spotter |
| 2014-04-13 15:15 | Wind | 52 kt 60 mph | 6 mi N of Copan | Thunderstorm wind gusted to around 60 mph. |
| 2013-07-23 21:50 | Wind | 52 kt 60 mph | 1.26 mi E of Bartlesville | Strong thunderstorm wind snapped large tree limbs. |
| 2013-07-16 16:40 | Wind | 61 kt 70 mph | 0 mi N of Vera | Strong thunderstorm wind damaged the roof of a fire station, blew down power lines, and damaged trees. |
| 2013-06-15 13:10 | Wind | 56 kt 64 mph | 0 mi N of Bartlesville | Strong thunderstorm wind blew down large tree limbs. |
| 2013-05-31 17:39 | Wind | 65 kt 75 mph | 5.92 mi ESE of Owen | Strong thunderstorm wind, likely associated with the tornadic storm's rear flank downdraft, snapped large tree limbs. |
| 2013-05-29 19:38 | Wind | 65 kt 75 mph | 1.47 mi ESE of Bartlesville | A tree was blown down by strong thunderstorm wind. |
| 2013-05-20 15:59 | Wind | 52 kt 60 mph | .32 mi SE of Copan | Strong thunderstorm wind blew down large tree limbs. |
| 2013-05-19 21:20 | Hail | 1" quarter | 5 mi NW of Copan | No narrative filed · source: Public |
| 2013-01-29 08:30 | Wind | 61 kt 70 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 70 mph thunderstorm wind gusts. |
| 2012-09-07 14:30 | Wind | 61 kt 70 mph | 0 mi N of Vera | Strong thunderstorm wind blew portions of a roof off of a home. |
| 2012-07-08 18:15 | Wind | 61 kt 70 mph | 0 mi N of Ochelata | Strong thunderstorm wind damaged the roof of a barn, removed shingles from the roof of a home, blew down a tree, and destroyed a shed. |
| 2012-06-04 00:00 | Hail | 0.75" penny | 1.3 mi ESE of Bartlesville | No narrative filed · source: Public |
| 2012-05-30 22:29 | Hail | 0.88" nickel | 0 mi N of Bartlesville | No narrative filed · source: Trained Spotter |
| 2012-05-30 22:30 | Wind | 70 kt 81 mph | 1.45 mi E of Bartlesville | Strong thunderstorm wind blew down large trees onto a road. |
| 2012-05-30 22:32 | Wind | 70 kt 81 mph | .42 mi SW of Dewey | Strong thunderstorm wind blew down large trees. |
| 2012-05-30 22:40 | Wind | 52 kt 60 mph | 0 mi N of Ochelata | Strong thunderstorm wind estimated to around 60 mph snapped large tree limbs. |
| 2012-05-30 22:40 | Hail | 1" quarter | 0 mi N of Ochelata | No narrative filed · source: Public |
| 2012-04-29 21:28 | Wind | 65 kt 75 mph | 1 mi E of Copan | Strong thunderstorm wind blew down a large tree at 3990 RD and 410 RD east of Copan. |
| 2012-04-15 04:54 | Wind | 56 kt 64 mph | 2.55 mi ENE of Copan | The Oklahoma Mesonet station near Copan measured 65 mph thunderstorm wind gusts. |
| 2012-04-09 20:10 | Hail | 1" quarter | 0 mi N of Ochelata | No narrative filed · source: Public |
| 2012-04-09 20:30 | Hail | 1.75" golf ball | 2 mi W of Ramona | No narrative filed · source: Public |
| 2012-04-09 20:37 | Hail | 1.75" golf ball | 3 mi S of Ramona | No narrative filed · source: Broadcast Media |
| 2012-04-07 09:30 | Hail | 0.75" penny | 1.43 mi E of Bartlesville | No narrative filed · source: Public |
| 2012-02-28 22:24 | Wind | 61 kt 70 mph | 2 mi N of Dewey | Strong thunderstorm wind overturned a travel trailer and caused extensive damage to a carport. |
| 2012-02-28 22:25 | Wind | 61 kt 70 mph | 1.57 mi E of Bartlesville | Strong thunderstorm wind blew down large tree limbs and damaged large signs. |
| 2012-02-28 22:30 | Wind | 61 kt 70 mph | 3.49 mi NE of Ochelata | A tractor trailer truck was blown off the roadway and overturned, injuring the driver. |
| 2011-06-18 20:10 | Hail | 1.75" golf ball | 2 mi NW of Copan | No narrative filed · source: Trained Spotter |
| 2011-06-16 13:00 | Wind | 52 kt 60 mph | 0 mi N of Copan | Strong thunderstorm wind blew down large tree limbs. |
| 2011-05-24 18:35 | Wind | 65 kt 75 mph | 0 mi E of Bartlesville | Strong thunderstorm wind gusts damaged a church near the intersection of SW Frank Phillips Boulevard and S Virginia Avenue as well as a hospital near the intersection of E Frank Phillips Boulevard and Highway 75. |
| 2011-05-11 15:30 | Wind | 61 kt 70 mph | 0 mi N of Ochelata | Emergency Management personnel reported trees and power lines blown down by strong thunderstorm winds. |
| 2011-05-11 16:45 | Wind | 56 kt 64 mph | .91 mi ESE of Bartlesville | Strong thunderstorm wind blew down trees and large limbs across the city. |
| 2011-04-24 18:30 | Hail | 1" quarter | 0 mi N of Ramona | No narrative filed · source: Public |
| 2011-04-24 18:51 | Hail | 0.75" penny | 3 mi SE of Bartlesville | No narrative filed · source: Trained Spotter |
| 2011-04-24 19:00 | Hail | 0.88" nickel | .39 mi WSW of Dewey | No narrative filed · source: Public |
| 2011-04-24 19:00 | Hail | 0.88" nickel | 0 mi N of Copan | No narrative filed · source: Public |
| 2011-04-14 16:55 | Hail | 1" quarter | .74 mi E of Bartlesville | No narrative filed · source: Broadcast Media |
| 2011-04-14 16:58 | Hail | 1.75" golf ball | 1.38 mi E of Bartlesville | No narrative filed · source: Trained Spotter |
| 2011-04-09 00:35 | Hail | 1.75" golf ball | 4 mi S of Ramona | No narrative filed · source: Trained Spotter |
| 2011-04-09 00:37 | Hail | 1.75" golf ball | 0 mi N of Vera | No narrative filed · source: Broadcast Media |
| 2011-03-19 10:36 | Hail | 1" quarter | 0 mi N of Bartlesville | No narrative filed · source: Trained Spotter |
| 2011-03-19 10:46 | Hail | 0.88" nickel | 4 mi SW of Dewey | No narrative filed · source: Trained Spotter |
| 2010-09-15 21:15 | Hail | 0.75" penny | .5 mi W of Bartlesville | No narrative filed · source: Emergency Manager |
| 2010-06-23 21:15 | Wind | 52 kt 60 mph | 0 mi N of Copan | Strong thunderstorm wind blew down several large trees. |
| 2010-06-23 21:34 | Wind | 52 kt 60 mph | 1 mi NW of Bartlesville | No narrative filed · source: ASOS |
| 2010-06-23 21:35 | Wind | 52 kt 60 mph | .35 mi WSW of Dewey | Strong thunderstorm wind blew down several large trees. |
| 2010-06-23 21:35 | Wind | 61 kt 70 mph | 2 mi ENE of Copan | No narrative filed · source: Mesonet |
| 2010-06-23 21:40 | Wind | 52 kt 60 mph | .75 mi ESE of Bartlesville | Strong thunderstorm wind blew down several large trees. |
| 2010-06-23 21:55 | Wind | 52 kt 60 mph | 7 mi ENE of Ochelata | Strong thunderstorm wind blew down several large trees and damaged the roof of a home near Ogelsby. |
| 2010-05-10 17:48 | Hail | 0.75" penny | 0 mi N of Dewey | No narrative filed · source: County Official |
| 2010-04-06 22:25 | Wind | 52 kt 60 mph | 0 mi N of Ochelata | Emergency Management estimated 60 mile per hour thunderstorm wind gusts. |
| 2010-04-04 23:17 | Hail | 0.88" nickel | 0 mi N of Dewey | No narrative filed · source: Emergency Manager |
| 2010-04-04 23:17 | Wind | 52 kt 60 mph | 0 mi N of Dewey | Strong thunderstorm wind blew down large tree limbs. |
| 2010-04-04 23:18 | Hail | 1" quarter | 0 mi N of Dewey | A storm chaser with KJRH reported quarter size hail. |
| 2010-04-02 07:05 | Wind | 52 kt 60 mph | .5 mi N of Dewey | Strong thunderstorm wind damaged a barn and other outbuildings north of Dewey. |
Worst storm days in Washington County
| Date | Reports that day | Largest hail | Peak gust |
|---|---|---|---|
| 2017-08-10 | 11 | — | 75 mph |
| 2025-06-17 | 6 | 1.75" (golf ball) | 75 mph |
| 2010-06-23 | 6 | — | 70 mph |
| 2026-04-15 | 5 | 2" (hen egg) | — |
| 2018-05-19 | 5 | 1.75" (golf ball) | 70 mph |
| 2016-04-10 | 5 | 1.75" (golf ball) | — |
| 2019-04-17 | 5 | 1" (quarter) | 70 mph |
| 2012-05-30 | 5 | 1" (quarter) | 81 mph |
| 2019-07-21 | 5 | — | 75 mph |
| 2026-04-28 | 4 | 1.25" (half dollar) | — |
Reports by year
Report counts are driven partly by how many people were around to report a storm, so recent years tend to look busier than the early 2010s. Treat the trend as a reporting trend, not purely a weather trend.
Notable large-hail events (2" and up)
| Date | Size | Near | What was reported |
|---|---|---|---|
| 2026-04-15 | 2" hen egg | 4.89 mi ESE of Bartlesville | Hail up to two inches in diameter damaged homes and vehicles. |
| 2019-05-22 | 2.5" tennis ball | 3 mi W of Vera | No narrative filed |
When does hail hit Washington County?
Across 17 years of records, April produced the most reports (53), followed by the months either side of it. Monthly totals:
| Month | Reports | Share |
|---|---|---|
| January | 1 | 0.5% |
| February | 6 | 3.3% |
| March | 8 | 4.4% |
| April | 53 | 29.1% |
| May | 42 | 23.1% |
| June | 23 | 12.6% |
| July | 17 | 9.3% |
| August | 18 | 9.9% |
| September | 4 | 2.2% |
| October | 4 | 2.2% |
| November | 5 | 2.7% |
| December | 1 | 0.5% |
Nearby counties in Oklahoma
Oklahoma County (921)Tulsa County (828)Cleveland County (677)Comanche County (502)Texas County (435)Grady County (425)Canadian County (366)Garfield County (364)Beaver County (358)Le Flore County (357)Caddo County (351)Osage County (351)
See all 77 Oklahoma counties →
About these numbers
Every row above is a report filed with the National Weather Service and archived in the NOAA NCEI Storm Events Database (FIPS 40147). Reports are eyewitness, trained-spotter and damage-survey observations, so they cluster near roads and towns and miss storms over empty country. Hail sizes are estimates. Damage figures are preliminary as filed and are never revised in this archive. Use this page for background, not for an insurance claim, a legal filing, or a roof assessment — for those, get the official record from NOAA directly.