Hail, Delaware
- When
- April 28, 8:43 AM CST
- Where
- Delaware County, 1 mi N of Kansas
- Measured
- 1.75 in hail
- Property damage
- $50,000
- Reported by
- Public
- Coordinates
- 36.215, -94.800
Large hail up to golf ball size damaged homes and vehicles.
A couple rounds of strong to severe thunderstorms developed across eastern Oklahoma on the 28th, as a warm front stretched across southeastern Oklahoma and an upper level disturbance approached from the west. The atmosphere across the area was moderately unstable with strong deep-layer wind shear, the combination of which supported the development of some supercell thunderstorms.
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 couple rounds of strong to severe thunderstorms developed across eastern Oklahoma on the 28th, as a warm front stretched across southeastern Oklahoma and an upper level disturbance approached from the west. The atmosphere across the area was moderately unstable with strong deep-layer wind shear, the combination of which supported the development of some supercell thunderstorms. A tornado, isolated damaging wind, and large hail up to two inches in diameter occurred with the strongest thunderstorms.
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 28, 7:48 AM CST, 55 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Tulsa OK 848 AM CDT Tue Apr 28 2026 ...New UPDATE... .KEY MESSAGES... Updated at 848 AM CDT Tue Apr 28 2026 - Another round of thunderstorms and severe weather is expected Tuesday. - A cold front will usher in cooler and drier air Tuesday night, marking the beginning of an extended break from severe weather that is expected to last into the first part of May. - A storm system is forecast to track east across Texas during the latter part of the week, increasing rain chances across the region. Locally heavy rainfall is possible across the south. && .UPDATE... Issued at 848 AM CDT Tue Apr 28 2026 Warm advection showers and thunderstorms are likely to increase in coverage by late morning as an upper wave influences the region. Mesoanalysis currently indicates upwards of 1000-3000 J/kg of MUCAPE in place across the FA, particularly across the south. Steep mid-level lapse rates and strong shear values will support severe weather for much of the area. A warm front remains draped across S OK and into W-Central AR this morning and will attempt to lift north today. Its evolution will likely be influenced by storm coverage this morning, and greater storm coverage north of the boundary could help to limit the northward advance. Left undisturbed, the front may lift to near the I-40 corridor in eastern Oklahoma and into parts of NW AR by this afternoon. Large hail and strong winds will be the primary hazards for storms that occur north of the front. Along and south of the front, greater potential exists for sfc-based storms and all severe hazards will be possible, including a few tornadoes. Heavy rainfall and localized flash flooding will also be a concern today, especially across SE OK. A complex of storms was observed moving generally along the boundary from west to east across S Oklahoma/ N Texas this morning. Expect this to continue east, potentially impacting portions of SE OK by late morning. Overall, severe weather will be possible through the afternoon and into the evening. Depending on how widespread storms become this morning, the severe risk may lean more heavily towards the late morning-afternoon period, with less coverage possible this evening. Trends will be monitored. && .SHORT TERM... (Through Tuesday) Issued at 1127 PM CDT Mon Apr 27 2026 A cold front is currently advancing south across northwest Arkansas and southeast Oklahoma. A few storms have developed along and ahead of it, mainly to the east of the forecast area. With no new convective attempts evident on IR imagery, the severe thunderstorm watch was cancelled early. The front is expected to settle down into the lower Ark River Valley and SE OK by Tuesday morning. Thunderstorm chances increase Tuesday morning as warm advection increases ahead of the approaching wave currently near Las Vegas. Storm coverage and severe potential will increase through the day. The front will lift north into SE OK and perhaps west-central AR as a weak frontal wave of low pressure slides along it during the day in response to the passing wave. Storms that get going near and south of the boundary will have the best chance of producing higher- end severe weather. Low level shear is sufficient for a supercell tornado threat, especially near the boundary, and this threat could start earlier in the day than usual. Otherwise, large hail and locally damaging wind will be the primary severe threats. CAMs suggest that the storms will move east and south of the region by early evening, in tandem with the now southward progression of the cold front in the wake of the passing frontal wave. Lacy && .LONG TERM... (Tuesday Night through Monday) Issued at 1127 PM CDT Mon Apr 27 2026 Cooler and drier air will filter into the region Tuesday night into Wednesday, starting a period of below average temperatures that will last for the remainder of the week. Rain chances will increase toward the latter part of the week as an upper level system tracks east across Texas. With the warm and unstable air shoved well to the south, storm chances will be minimal at best. Locally heavy rainfall will be possible down near the Red River before the system moves away by the start of the weekend. A weak system will bring low rain chances again by the start of the next work week. With broad upper troughing over the eastern CONUS and surface ridging predominant over the south-central CONUS, we are looking at an extended period without severe weather that will last into much of the first week of May. Lacy && .AVIATION... (12Z TAFS) Issued at 639 AM CDT Tue Apr 28 2026 Cigs will continue to deteriorate through the morning hours, with MVFR conditions overspreading all sites by late morning. Increasing showers with scattered thunderstorms are expected as well from mid to late morning across the region. Multiple rounds of storms will be possible into the afternoon, especially across SE OK into WC AR though there is still some uncertainty in coverage of storms during the afternoon, thus have opted for PROB30s during the afternoon for this reason. Any storms should shift southeast into the evening with skies clearing somewhat across E OK sites. MVFR to possibly some IFR cigs are expected to hold across AR sites through the rest of the TAF period. Bowlan && .PRELIMINARY POINT TEMPS/POPS... TUL 68 48 69 48 / 60 10 0 0 FSM 79 56 74 52 / 90 50 10 10 MLC 79 53 71 52 / 90 30 10 10 BVO 63 43 69 43 / 40 0 0 0 FYV 74 50 70 45 / 90 50 10 0 BYV 73 51 68 45 / 90 60 10 0 MKO 73 50 69 49 / 90 30 0 0 MIO 66 46 66 43 / 70 20 0 0 F10 72 49 69 49 / 80 20 0 0 HHW 81 56 71 57 / 80 60 10 10 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && SHORT TERM...30 LONG TERM....30 AVIATION...04
Hazardous Weather Outlook National Weather Service Tulsa OK 434 AM CDT Tue Apr 28 2026 ARZ001-002-010-011-119-120-129-219-220-229-OKZ049-053-055>071- 073>075-154-172-176-254-272-276-354-376-290945- 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- 434 AM CDT Tue Apr 28 2026 This Outlook is for Northwest and West Central Arkansas as well as much of Eastern Oklahoma. .DAY ONE...Today and Tonight. TORNADO. RISK...Limited. AREA...Southeast Oklahoma and West Central Arkansas. ONSET...Midday. SEVERE THUNDERSTORM. RISK...Significant. AREA...Eastern Oklahoma and Northwest Arkansas. ONSET...Late Morning. AREA AT GREATEST RISK...Southeast Oklahoma. HEAVY RAIN AND FLASH FLOOD. RISK...Limited. AREA...Southeast Oklahoma and Northwest Arkansas. ONSET...Late Morning. DISCUSSION... Thunderstorm chances will increase through the morning hours and into the afternoon across eastern Oklahoma, then moving into western Arkansas. Initial activity will pose a threat of large hail across the area. Another round of storms is expected through the afternoon, primarily south of a frontal boundary across southeast Oklahoma into west central Arkansas. All severe hazards will be possible with this activity, with cells merging into clusters as they push southeast across the area through the afternoon. Thunderstorms and associated hazards are expected to push out of the local region by mid morning with more settled conditions arriving for the rest of the period. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... Activation of the Regional Spotter Network Expected. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. WEDNESDAY THROUGH MONDAY...No Hazards. EXTENDED DISCUSSION... Following the passage of a cold front on Tuesday, much more settled conditions will prevail through much of the next week. Some showers with a few isolated thunderstorms will be possible Thursday and Friday, but little impact is expected from this system at this time. weather.gov/tulsa contains additional information.
Special Weather Statement
National Weather Service Tulsa OK
941 AM CDT Tue Apr 28 2026
ARZ001-OKZ063-281515-
Benton AR-Delaware OK-
941 AM CDT Tue Apr 28 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN BENTON AND SOUTHERN
DELAWARE COUNTIES THROUGH 1015 AM CDT...
At 941 AM CDT, Doppler radar indicated a strong thunderstorm 3 miles
northwest of Kansas, moving east at 40 mph.
HAZARD...Wind gusts up to 40 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...
Siloam Springs... Gentry...
West Siloam Springs... Colcord...
Kansas... Oaks...
Maysville... Leach...
Twin Oaks... Lake Eucha State Park...
Cherokee City... Natural Falls State Park...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3616 9447 3616 9493 3631 9495 3645 9455
TIME...MOT...LOC 1441Z 255DEG 33KT 3625 9485
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPHSpecial Weather Statement
National Weather Service Tulsa OK
943 AM CDT Tue Apr 28 2026
ARZ001-010-OKZ063-068-069-281515-
Benton AR-Washington AR-Adair OK-Cherokee OK-Delaware OK-
943 AM CDT Tue Apr 28 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN BENTON...WEST
CENTRAL WASHINGTON...SOUTHEASTERN DELAWARE...NORTHERN ADAIR AND
NORTHEASTERN CHEROKEE COUNTIES THROUGH 1015 AM CDT...
At 943 AM CDT, Doppler radar indicated a strong thunderstorm 4 miles
east of Scraper, moving east at 40 mph.
HAZARD...Wind gusts up to 40 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...
Siloam Springs... West Siloam Springs...
Watts... Cincinnati...
Scraper... Lake Francis...
Ballard... Wedington...
Rhea... Natural Falls State Park...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3604 9484 3615 9486 3626 9446 3601 9439
TIME...MOT...LOC 1443Z 260DEG 34KT 3611 9476
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPHThe Tulsa radar (KINX), 69 km away, was scanning. The volume nearest the first event began at 14:41 UTC.
25 hail, 1 tornado, 1 thunderstorm wind. Local standard time, as filed.
Large hail up to golf ball size damaged homes and vehicles.
Half dollar size hail damaged homes and vehicles.
Half dollar size hail damaged homes and vehicles.
Half dollar size hail damaged homes and vehicles.
Half dollar size hail damaged homes and vehicles.
Half dollar size hail damaged homes and vehicles.
Hail up to two inches in diameter damaged homes and vehicles.
Golf ball size hail damaged homes and vehicles.
This tornado developed west of the 4240 Road, near Pinekke Road. It moved east-southeast snapping large tree limbs and uprooting small trees. The tornado crossed Highway 93 on the northern banks of Lake Hugo, where some trees were uprooted and large tree limbs were snapped. Numerous trees were uprooted and a few were snapped south of Apple, and a home was damaged. It continued to move east-southeast across the E2000 Road, and then crossed Highway 147 before dissipating over rugged terrain. Based on this damage, maximum estimated wind in the tornado was 95 to 105 mph.
Strong thunderstorm wind blew down trees and snapped numerous large tree limbs.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2026Every state in 2026This day in weather historyThe tornado archive for Oklahoma, 2026Warnings in Oklahoma, April 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: 1325060, 1329858, 1329863, 1329865, 1330120, 1329864, 1329867, 1330710, 1330297, 1330127, 1330699, 1330698, 1330269, 1330128, 1330701, 1330126, 1330290, 1330130, 1330272, 1330129, 1330700, 1330708, 1330706, 1330702, 1330705, 1325216, 1330709.