Hail, Dixon
- When
- May 18, 3:18 PM CST to 3:20 PM CST
- Where
- Dixon County, 0.51 mi W of Concord
- Measured
- 0.88 in hail
- Reported by
- COOP Observer
- Coordinates
- 42.380, -96.990
A slow moving frontal boundary from northeast Nebraska into northwest Iowa focused development of scattered thunderstorms during the late afternoon and very early evening. Storms fired and intensified with elevated instability above a stratus layer around 1000-1500 J/kg and 40-50 knots of effective shear.
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 FSD wrote it up.
A slow moving frontal boundary from northeast Nebraska into northwest Iowa focused development of scattered thunderstorms during the late afternoon and very early evening. Storms fired and intensified with elevated instability above a stratus layer around 1000-1500 J/kg and 40-50 knots of effective shear. Stronger and more organized cells produced large hail up to golf ball size.
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 Sioux Falls, SD wrote its last area forecast discussion before the first event at May 18, 12:01 PM CST, 3 hours 17 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Sioux Falls SD 101 PM CDT Mon May 18 2026 .KEY MESSAGES... - Showers and isolated thunderstorms return to the area this afternoon this evening into tonight. - A few storms along and southeast of a Wayne to Sheldon to Windom line may be strong to severe late this afternoon into this evening. The main threat would be hail to half dollar size but storms this strong should remain very isolated and likely closer to near and east of Highway 60. - Areas of frost or freeze will be possible on Wednesday morning, with the better chances north of I-90. - Cool conditions prevail this week. Dry weather expected mid week. Another round of storms is possible Thursday through Friday. && .DISCUSSION... Issued at 1258 PM CDT Mon May 18 2026 Early this afternoon the surface to 925 mb front was across southern NE into southern IA. Given the marginal strength of the incoming wave, this boundary should not lift far enough north and west by late afternoon to get into the area. This should limit any wind and tornado threats and keep them off to the southeast. However, some elevated hailers will remain possible across mainly northwest IA as elevated CAPE values ramp up to about 1000-1500 J/KG and deep layer shear is a fairly strong, unidirectional 40-50 knots. This would be lifting a parcel from above the stratus layer, which would likely be in about the 800-750mb layer. The better chances will be from about 5 pm to 9 pm. After this wave pushes the remaining instability out of the area this evening, dry and cool conditions are expected for Tuesday and Wednesday. The only concerns on these two days will be the potential for frost and freeze conditions, mostly north of I-90, as surface high pressure is in place. Another weaker wave moves through the area on Wednesday but for now this appears to bring mainly mid level cloud cover. The next better chance for showers and thunderstorms will come Thursday night into Friday night. At this time severe weather looks to remain isolated as model instability fields are hinting at 1000 J/kg CAPE or less for the most part. Once this wave passes a warming trend should move in as flat ridging aloft develops ahead of a deepening low pressure in the Northern Rockies. Saturday should be mild, likely in the 70s, while Sunday sees the better chance to warm into the 80s. && .AVIATION /18Z TAFS THROUGH 18Z TUESDAY/... Issued at 1243 PM CDT Mon May 18 2026 Widespread stratus, mai.nly IFR but occasionally MVFR, will persist through much of the night, but gradually improve later tonight into Tuesday morning. Scattered showers and isolated thunderstorms will increase in coverage through the afternoon into the early evening, then gradually diminish through the early overnight hours. The strongest thunderstorms will be in parts of northwest IA, with the better chance from 5 pm through 9 pm. A few of these storms could contain hail. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...None. MN...None. IA...None. NE...None. && DISCUSSION...08 AVIATION...08
Hazardous Weather Outlook National Weather Service Sioux Falls SD 331 AM CDT Mon May 18 2026 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ038>040-050-052>071-190845- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory- Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-McCook- Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-Yankton- Union- 331 AM CDT Mon May 18 2026 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Scattered showers and isolated thunderstorms return to the area this afternoon through tonight. A few strong to severe storms are possible along and southeast of a line from Wayne to Sheldon to Windom. If strong storms develop, ping pong ball sized hail and 60 mph wind gusts are the main threats. However, locally heavy rainfall and a tornado are possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Chances for showers and thunderstorms return Thursday through Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Preliminary Local Storm Report
National Weather Service Sioux Falls SD
219 PM CDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0803 PM Tstm Wnd Dmg 3 NE Pierson 42.58N 95.84W
05/17/2026 Cherokee IA Public
Photos via social media of destroyed
outbuilding and tree damage 6 miles west of
Washta.
&&
akPreliminary Local Storm Report
National Weather Service Sioux Falls SD
226 PM CDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0751 PM Tstm Wnd Dmg Moville 42.49N 96.07W
05/17/2026 Woodbury IA Public
Several videos and photos via social media
of large trees down, including some on
houses or other structures.
&&
akPreliminary Local Storm Report
National Weather Service Sioux Falls SD
238 PM CDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0732 PM Tstm Wnd Dmg 3 SE Sioux City 42.47N 96.36W
05/17/2026 Woodbury IA Public
Several photos via social media of large
tree branches down in the Morningside
neighborhood.
&&
akPreliminary Local Storm Report
National Weather Service Sioux Falls SD
249 PM CDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0234 PM Tstm Wnd Dmg 1 E Harrison 43.44N 98.52W
05/17/2026 Douglas SD Emergency Mngr
Open front cattle barn and hay shed
destroyed. A couple houses in the area also
had missing shingles.
&&
akPreliminary Local Storm Report...Summary
National Weather Service Sioux Falls SD
304 PM CDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0305 PM Tstm Wnd Dmg 5 S Tripp 43.16N 97.97W
05/17/2026 Bon Homme SD Public
Farm out-buildings severely damaged and 5th
wheel camper overturned.
0315 PM Tstm Wnd Dmg 2 S Tyndall 42.96N 97.86W
05/17/2026 Bon Homme SD Trained Spotter
65 to 70 mph downed small trees. Quarter
sized hail also occurred.
0316 PM Tstm Wnd Gst 2 WNW Scotland 43.16N 97.76W
05/17/2026 M60 MPH Bon Homme SD Public
Via personal weather station.
0324 PM Tstm Wnd Gst 3 N Mitchell 43.77N 98.04W
05/17/2026 M59 MPH Davison SD ASOS
ASOS station KMHE Mitchell Municipal
Airport.
0336 PM Hail 6 ESE Menno 43.20N 97.48W
05/17/2026 E1.75 Inch Hutchinson SD Public
Photo of roughly golf ball size hail. Time
estimated via radar.
0336 PM Hail 3 E Menno 43.22N 97.51W
05/17/2026 M1.00 Inch Hutchinson SD Public
Corrects time of previous hail report from 3
E Menno. Via mping. Time estimated via
radar.
0337 PM Tstm Wnd Dmg 6 E Menno 43.24N 97.45W
05/17/2026 Hutchinson SD Emergency Mngr
Large garage door on outbuilding bowed in.
Time estimated from radar.
0338 PM Tstm Wnd Gst 7 ESE Menno 43.21N 97.45W
05/17/2026 M81 MPH Hutchinson SD Mesonet
Mesonet station MNMS2 Menno 7ESE (SD
Mesonet).
0342 PM Tstm Wnd Dmg 8 S Freeman 43.24N 97.42W
05/17/2026 Hutchinson SD Emergency Mngr
Damage to large road signs near intersection
of Hwy 18/81.
0342 PM Tstm Wnd Gst 5 S Freeman 43.28N 97.42W
05/17/2026 M82 MPH Hutchinson SD Mesonet
Mesonet station 163 SD RWIS Freeman.
0344 PM Hail 3 E Menno 43.22N 97.51W
05/17/2026 M1.00 Inch Hutchinson SD Public
Via mping. Time estimated via radar.
0344 PM Hail 7 N Mayfield 43.18N 97.34W
05/17/2026 E1.00 Inch Turner SD Public
Via mping. Time estimated via radar.
0347 PM Tstm Wnd Gst 9 W Hurley 43.26N 97.27W
05/17/2026 E60 MPH Turner SD Trained Spotter
Spotter estimated 50-60 mph winds along with
half dollar size hail.
0406 PM Tornado 2 W Davis 43.26N 97.03W
05/17/2026 Turner SD Public
Video via social media of brief gustnado.
Location estimated.
0409 PM Tstm Wnd Dmg 3 E Parker 43.39N 97.08W
05/17/2026 Turner SD Public
Power poles snapped and irrigation pivots
flipped near the intersection of 276th St
and 456th Ave. Time estimated from radar.
0414 PM Tstm Wnd Gst 1 S Chancellor 43.36N 96.99W
05/17/2026 M60 MPH Turner SD Public
Via personal weather station. Exact time
estimated via radar.
0415 PM Tstm Wnd Dmg Chancellor 43.38N 96.98W
05/17/2026 Turner SD Public
70 mph caused downed tree branches.
0417 PM Tstm Wnd Gst 2 ENE Chancellor 43.39N 96.94W
05/17/2026 M70 MPH Turner SD Public
Via personal weather station. Exact time
estimated via radar.
0417 PM Hail 2 W Lennox 43.35N 96.93W
05/17/2026 M1.00 Inch Turner SD Public
Quarter size hail along with estimated 40-50
mph winds reported.
0432 PM Hail 5 W Sioux Falls 43.53N 96.84W
05/17/2026 E1.00 Inch Minnehaha SD Public
Report from mPING.
0436 PM Hail 4 NW Harrisburg 43.48N 96.75W
05/17/2026 M1.00 Inch Lincoln SD Emergency Mngr
Report from 85th and Western of quarter size
hail.
0438 PM Hail Tea 43.45N 96.84W
05/17/2026 M1.00 Inch Lincoln SD Public
0445 PM Tstm Wnd Dmg 2 SE Sioux Falls 43.52N 96.71W
05/17/2026 Minnehaha SD Public
Large tree limbs down.
0447 PM Hail 4 SSE Sioux Falls 43.49N 96.71W
05/17/2026 M1.50 Inch Lincoln SD Trained Spotter
0502 PM Hail Valley Springs 43.59N 96.46W
05/17/2026 E1.00 Inch Minnehaha SD Public
0514 PM Hail 3 NE Lester 43.46N 96.29W
05/17/2026 E1.25 Inch Lyon IA Public
Social media report with picture and coin
for size comparison. Time estimated by
radar.
0518 PM Tstm Wnd Gst 1 WSW Beaver Creek 43.61N 96.38W
05/17/2026 M58 MPH Rock MN Mesonet
Mesonet station MN006 I-90 - Beaver Creek Mp
4.
0526 PM Tstm Wnd Gst 3 S Luverne 43.62N 96.22W
05/17/2026 M66 MPH Rock MN AWOS
AWOS station KLYV Luverne Airport.
0536 PM Hail 3 SW Magnolia 43.60N 96.09W
05/17/2026 M1.25 Inch Rock MN Public
Report from mPING.
0544 PM Tstm Wnd Gst 4 NE Adrian 43.68N 95.89W
05/17/2026 M62 MPH Nobles MN Public
Via personal weather station. Exact time
estimated via radar.
0548 PM Funnel Cloud 3 S Lismore 43.70N 95.96W
05/17/2026 Nobles MN Public
Rain wrapped funnel observed from I-90
looking north toward Lismore. Could not
confirm ground contact.
0550 PM Hail 1 N Adrian 43.65N 95.93W
05/17/2026 M1.50 Inch Nobles MN Law Enforcement
0551 PM Hail Rock Valley 43.20N 96.30W
05/17/2026 M0.75 Inch Sioux IA Public
mPING: Dime (0.75 in.). Time estimated via
radar.
0554 PM Hail Lismore 43.75N 95.95W
05/17/2026 E1.75 Inch Nobles MN Public
0601 PM Hail Wilmont 43.76N 95.83W
05/17/2026 M1.25 Inch Nobles MN Public
mPING: Half Dollar (1.25 in.). Time
estimated via radar.
0601 PM Tstm Wnd Gst Florence 44.24N 96.05W
05/17/2026 M60 MPH Lyon MN Mesonet
Mesonet station MN160 U.s.14 - Florence - Mp
21.2. Time estimated via radar.
0615 PM Tornado 3 SW Worthington 43.60N 95.64W
05/17/2026 Nobles MN Trained Spotter
Unconfirmed report of tornado approximately
1 mile southwest of Worthington. Debris
currently being observed.
0618 PM Hail 5 SW Worthington 43.57N 95.65W
05/17/2026 M1.00 Inch Nobles MN Public
Report from mPING: Time estimated via radar.
0622 PM Hail 2 S Fulda 43.84N 95.59W
05/17/2026 M1.00 Inch Nobles MN Public
mPING: Quarter (1.00 in.). Time estimated
via radar.
0624 PM Hail Fulda 43.87N 95.60W
05/17/2026 M1.00 Inch Murray MN Public
Picture with 1 inch hailstone and ruler.
0626 PM Tstm Wnd Gst 2 ENE Worthington 43.63N 95.57W
05/17/2026 M55 MPH Nobles MN AWOS
AWOS station KOTG Worthington Airport.
0626 PM Tstm Wnd Gst 2 NNE Worthington 43.65N 95.59W
05/17/2026 M59 MPH Nobles MN Public
Via personal weather station. Exact time
estimated via radar.
0636 PM Hail Sibley 43.41N 95.75W
05/17/2026 E0.75 Inch Osceola IA Public
Report from mPING: Dime (0.75 in.). Time
estimated via radar.
0643 PM Hail 3 SW Craig 42.87N 96.35W
05/17/2026 M1.75 Inch Plymouth IA Public
Photo via social media. Time estimated via
radar.
0650 PM Hail Craig 42.90N 96.31W
05/17/2026 E1.25 Inch Plymouth IA Public
Photo via social media. Time estimated by
radar.
0723 PM Tstm Wnd Dmg 2 SE Sioux City 42.49N 96.37W
05/17/2026 Woodbury IA Trained Spotter
Tree branches 10-12 inches in diameter
downed. Time estimated from radar.
0729 PM Tstm Wnd Gst 2 WSW Salix 42.30N 96.32W
05/17/2026 M69 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0731 PM Tornado Salix 42.31N 96.29W
05/17/2026 Woodbury IA Emergency Mngr
Emergency manager reports tornado near
Salix.
0732 PM Tstm Wnd Dmg 3 SE Sioux City 42.47N 96.36W
05/17/2026 Woodbury IA Public
Several photos via social media of large
tree branches down in the Morningside
neighborhood.
0732 PM Tornado 3 SE Sergeant Bluff 42.36N 96.32W
05/17/2026 Woodbury IA Public
Several videos via social media of brief
gustnado. Location estimated.
0735 PM Tornado 3 NE Sergeant Bluff 42.43N 96.31W
05/17/2026 Woodbury IA Public
Several videos via social media of brief
gustnado. Location estimated.
0736 PM Tstm Wnd Gst 4 NNE Sergeant Bluff 42.46N 96.31W
05/17/2026 M66 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0748 PM Tstm Wnd Gst Lawton 42.48N 96.19W
05/17/2026 M67 MPH Woodbury IA Public
Via personal weather station.
0749 PM Tstm Wnd Gst Moville 42.49N 96.06W
05/17/2026 M63 MPH Woodbury IA Public
Via personal weather station.
0750 PM Tstm Wnd Gst Moville 42.49N 96.06W
05/17/2026 M77 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0751 PM Tstm Wnd Dmg Moville 42.49N 96.07W
05/17/2026 Woodbury IA Public
Several videos and photos via social media
of large trees down, including some on
houses or other structures.
0754 PM Tstm Wnd Gst 4 W Correctionville 42.48N 95.86W
05/17/2026 E74 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0756 PM Tstm Wnd Gst 3 NE Moville 42.52N 96.03W
05/17/2026 M75 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0757 PM Tstm Wnd Gst 1 SW Pierson 42.53N 95.88W
05/17/2026 M74 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0757 PM Tornado 5 NW Kingsley 42.63N 96.04W
05/17/2026 Plymouth IA Fire Dept/Rescue
Kingsley Fire reported brief tornado near
C60 and Pioneer Ave.
0803 PM Tstm Wnd Dmg 3 NE Pierson 42.58N 95.84W
05/17/2026 Cherokee IA Public
Photos via social media of destroyed
outbuilding and tree damage 6 miles west of
Washta.
0803 PM Tstm Wnd Gst Correctionville 42.48N 95.79W
05/17/2026 M88 MPH Woodbury IA Public
Via personal weather station. Exact time
estimated via radar.
0809 PM Hail 3 S Sanborn 43.14N 95.66W
05/17/2026 M1.75 Inch O'Brien IA Public
Report from mPING: Golf Ball (1.75 in.).
0812 PM Tornado 7 S Marcus 42.73N 95.81W
05/17/2026 Cherokee IA Public
Video of brief gustnado. Location estimated.
0816 PM Flash Flood 1 WSW Le Mars 42.78N 96.18W
05/17/2026 Plymouth IA Law Enforcement
911 dispatch reports a couple of different
flooded roads in Le Mars including portions
of Holton Dr as well as 5th Ave.
0822 PM Tstm Wnd Gst 1 NNW Ida Grove 42.35N 95.48W
05/17/2026 M59 MPH Ida IA Mesonet
Mesonet station RIGI4 Ida Grove.
0825 PM Tornado 3 W Cherokee 42.74N 95.61W
05/17/2026 Cherokee IA Public
A couple of videos via social media of brief
gustnado. Location estimated.
0829 PM Tornado 3 NE Meriden 42.82N 95.59W
05/17/2026 Cherokee IA Storm Chaser
Storm chasers reported a brief tornado on
the ground 2 to 3 minutes. Time and location
confirmed with radar.
0829 PM Tstm Wnd Gst 1 S Cherokee 42.73N 95.55W
05/17/2026 M62 MPH Cherokee IA AWOS
AWOS station KCKP Cherokee Municipal
Airport.
0829 PM Tstm Wnd Gst 6 N Cleghorn 42.89N 95.70W
05/17/2026 M62 MPH Cherokee IA Public
Via personal weather station. Exact time
estimated via radar.
0831 PM Tornado 5 WSW Royal 43.04N 95.38W
05/17/2026 Clay IA Public
Social media video relayed by emergency
manager of brief tornado. Location
estimated.
0831 PM Tstm Wnd Gst Meriden 42.80N 95.63W
05/17/2026 M60 MPH Cherokee IA Public
Via personal weather station.
0835 PM Tstm Wnd Gst 3 WSW Lakeside 42.60N 95.22W
05/17/2026 M59 MPH Buena Vista IA AWOS
AWOS station KSLB Storm Lake Airport.
0848 PM Tstm Wnd Gst 4 S Albert City 42.73N 94.95W
05/17/2026 M72 MPH Buena Vista IA Public
Via personal weather station.
0849 PM Tstm Wnd Dmg Greenville 43.02N 95.15W
05/17/2026 Clay IA Emergency Mngr
Damage to the Greenville grain elevator.
Branches and power lines also downed. Time
estimated from radar.
0851 PM Tstm Wnd Gst 1 SSW Albert City 42.77N 94.95W
05/17/2026 M71 MPH Buena Vista IA Public
Via personal weather station.
0908 PM Tornado 2 NW Terril 43.33N 95.00W
05/17/2026 Dickinson IA Public
Viewed on social media.
0912 PM Tstm Wnd Gst 1 S Arnolds Park 43.35N 95.13W
05/17/2026 M58 MPH Dickinson IA Public
Via personal weather station.
&&Preliminary Local Storm Report
National Weather Service Sioux Falls SD
321 PM CDT Mon May 18 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0656 PM Hail 2 NW Okabena 43.76N 95.34W
05/17/2026 E1.00 Inch Jackson MN Trained Spotter
In addition to hail up to the size of
quarters, winds gusted up about 40 mph and a
quick heavy rain occurred. No damage was
noticed.
&&
TRMThe Omaha radar (KOAX), 129 km away, was scanning. The volume nearest the first event began at 21:15 UTC.
4 hail. Local standard time, as filed.
Hail was mostly dime size, but some up to quarter size stones.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2026Every state in 2026This day in weather historyWarnings in Nebraska, May 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: 1343981, 1343982, 1343984, 1343986.