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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on May 21, 2011

Public hail, wind, and tornado reports across the United States on May 21, 2011 from May 21, 2011 through May 21, 2011, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Pick any date to see hail, wind and tornado public reports for that day — e.g. September 18, 2026.
Hail Reports
280
Wind Reports
37
Tornado Reports
21
Max Hail Size
5.25″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · May 21, 2011 · 2011–present Updated  Daily · last May 21, 2011

NWS Hail Reports on May 21, 2011

280 reports
Free hail report for your home →
0.88″ hail
May 21, 2011
11:20 PM CST-6
Hail report for May 21, 2011
Dakota County · 103,139 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.7 WNW Rosemount, MN
1.00″ hail
May 21, 2011
11:19 PM CST-6
Hail report for May 21, 2011
Dakota County · 103,139 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .85 NE Lakeville, MN
1.75″ hail
May 21, 2011
11:17 PM CST-6
Hail report for May 21, 2011
Lampasas County · 7,482 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4.19 S Rumley, TX
0.88″ hail
May 21, 2011
11:15 PM CST-6
Hail report for May 21, 2011
Dakota County · 103,139 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .85 NE Lakeville, MN
0.88″ hail
May 21, 2011
11:14 PM CST-6
Hail report for May 21, 2011
Franklin County · 8,614 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.14 NNW Peoria, KS
1.00″ hail
May 21, 2011
11:12 PM CST-6
Hail report for May 21, 2011
Franklin County · 8,614 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: N Peoria, KS
1.25″ hail
May 21, 2011
11:05 PM CST-6
Hail report for May 21, 2011
Franklin County · 8,614 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.03 WSW Peoria, KS
0.75″ hail
May 21, 2011
10:53 PM CST-6
Hail report for May 21, 2011
Otter Tail County · 29,682 Homes in County
Hail Report Description: Pea to penny sized hail was reported.
NWS Hail Report Location: 2.13 NNE New York Mills, MN
0.88″ hail
May 21, 2011
10:51 PM CST-6
Hail report for May 21, 2011
Linn County · 5,118 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .69 N Meadville, MO
1.00″ hail
May 21, 2011
10:36 PM CST-6
Hail report for May 21, 2011
Johnson County · 169,394 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .88 NE Olathe, KS
0.75″ hail
May 21, 2011
10:27 PM CST-6
Hail report for May 21, 2011
Livingston County · 5,200 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .69 S Chillicothe, MO
0.88″ hail
May 21, 2011
10:10 PM CST-6
Hail report for May 21, 2011
Osage County · 6,057 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.76 S Melvern, KS
0.75″ hail
May 21, 2011
10:03 PM CST-6
Hail report for May 21, 2011
Platte County · 30,453 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .69 N Platte Woods, MO
1.00″ hail
May 21, 2011
9:55 PM CST-6
Hail report for May 21, 2011
Lampasas County · 7,482 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.64 SW Rumley, TX
1.75″ hail
May 21, 2011
9:38 PM CST-6
Hail report for May 21, 2011
Douglas County · 28,496 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.84 ESE Worden, KS
Showing 15 of 280
Hail Damage Risk for Your Home +

Hail reports describe hail by diameter, often comparing stone size to familiar objects like peas, quarters, golf balls, and softballs. Use this guide as a starting point for possible hail damage to your roof, siding, gutters, vents, windows, and exterior. Actual hail damage depends on hail hardness, density, wind speed, impact angle, roof age, shingle condition, roof pitch, roofing material, installation quality, and prior storm damage.

Pea
0.25″
Low

Usually too small to cause hail damage to most sound asphalt roofs, siding, or gutters.

Mothball
0.50″
Sub-Severe Watch

Below the NWS severe-hail threshold, but not always harmless. Repeated small hail can scuff surfaces, wear aging shingles, and loosen protective granules over time.

Penny
0.75″
Minor / Watch

Below the NWS severe-hail threshold, but roof hail damage is still possible on older, brittle, poorly installed, or previously damaged shingles. May also mark screens, vents, gutters, and soft metal.

Nickel
0.88″
Minor / Watch

Still below the severe-hail threshold, but large enough to leave visible marks on soft metal and add wear to older or hail-weakened roof shingles.

Quarter
1.00″
Watch

The NWS severe-hail threshold. Quarter-size hail can bruise shingles, dent soft metal, and create roof hail damage worth checking.

Half Dollar
1.25″
Watch

More likely to dent gutters, vents, flashing, and siding. Hail damage risk rises quickly on older roofs or hail-weakened shingles.

Ping Pong / Walnut
1.50″
Likely

Hail damage becomes more likely, including bruised shingles, granule loss, dented siding, and damaged roof vents.

Golf Ball
1.75″
Likely

Often causes roof hail damage, cracked shingles, dented gutters, damaged flashing, and siding impacts. A roof inspection is recommended.

Hen Egg
2.00″
Serious

Can crack or puncture shingles, expose mat, dent siding, and cause widespread hail damage across the roof and exterior.

Tennis Ball
2.50″
Serious

Can cause heavy roof hail damage, punctured siding, broken skylights, damaged vents, and widespread exterior damage.

Baseball
2.75″
Major

Major hail damage is likely, including severe roof impacts, damaged siding, broken windows, and possible major roof repairs.

Tea Cup / Large Apple
3.00″
Major

Can cause heavy hail damage across the roof, siding, gutters, windows, and exterior. Significant repairs are often needed.

Softball
4.00″
Extreme

Destructive hail damage. Can severely damage roofing materials, siding, windows, gutters, vents, vehicles, and exterior surfaces.

Grapefruit
4.50″
Extreme

Catastrophic hail damage risk for roofs, windows, vehicles, siding, gutters, and exterior surfaces.

Source: NOAA / National Weather Service hail size references are used for hail-size comparisons and the 1.00″ severe-hail threshold. Damage descriptions are general homeowner guidance, not official NOAA/NWS damage ratings. Sub-severe hail under 1.00″ is below the severe threshold, but that does not mean “no roof damage.” Penny- to nickel-size hail can still contribute to granule loss, cosmetic surface marks, and added wear, especially on older, brittle, poorly installed, or previously damaged roofs.

NWS Wind Reports on May 21, 2011

37 reports
Free hail report + wind check →
64 mph
May 21, 2011
11:40 PM CST-6
Wind report for May 21, 2011
Waseca County · 6,377 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: N Waseca, MN
70 mph
May 21, 2011
9:43 PM CST-6
Wind report for May 21, 2011
Osage County · 6,057 Homes in County
Wind Report Description: An emergency manager reported some minor damage to homes in Quenemo and one outbuilding destroyed by strong winds.
NWS Wind Report Location: .54 W Lomax, KS
60 mph
May 21, 2011
9:40 PM CST-6
Wind report for May 21, 2011
Douglas County · 28,496 Homes in County
Wind Report Description: An emergency manager relayed a report from a storm chaser of 60 mph winds near Baldwin City.
NWS Wind Report Location: 3.84 ESE Worden, KS
60 mph
May 21, 2011
9:19 PM CST-6
Wind report for May 21, 2011
Mahaska County · 7,582 Homes in County
Wind Report Description: Estimated wind gust.
NWS Wind Report Location: .86 SE Oskaloosa, IA
60 mph
May 21, 2011
9:15 PM CST-6
Wind report for May 21, 2011
Mahaska County · 7,582 Homes in County
Wind Report Description: Estimated 60 MPH winds with minor tree damage and the skirting blown off the base of a mobile home.
NWS Wind Report Location: .52 W Oskaloosa, IA
60 mph
May 21, 2011
8:48 PM CST-6
Wind report for May 21, 2011
Wayne County · 2,497 Homes in County
Wind Report Description: Pea size hail fell as well.
NWS Wind Report Location: 2.14 NNE Bethlehem, IA
60 mph
May 21, 2011
8:45 PM CST-6
Wind report for May 21, 2011
Daviess County · 3,345 Homes in County
Wind Report Description: Thunderstorm wind gusts were estimated up to 60 mph.
NWS Wind Report Location: .87 SE Gallatin, MO
66 mph
May 21, 2011
8:41 PM CST-6
Wind report for May 21, 2011
Polk County · 134,175 Homes in County
Wind Report Description: Public reported damage to an outbuilding and windows blown out.
NWS Wind Report Location: 2.95 NNE Santiago, IA
58 mph
May 21, 2011
8:41 PM CST-6
Wind report for May 21, 2011
Boone County · 9,755 Homes in County
Wind Report Description: United Community School report received from a KCCI Schoolnet site.
NWS Wind Report Location: 1.24 NE Ericson, IA
70 mph
May 21, 2011
8:33 PM CST-6
Wind report for May 21, 2011
Osage County · 6,057 Homes in County
Wind Report Description: An emergency manager reported a 70 mph wind gust near Osage City.
NWS Wind Report Location: 2.7 E Barclay, KS
60 mph
May 21, 2011
8:07 PM CST-6
Wind report for May 21, 2011
Platte County · 30,453 Homes in County
Wind Report Description: Tree limbs reported on the ground, with thunderstorm wind gusts estimated up to 60 mph.
NWS Wind Report Location: .53 E Dearborn, MO
60 mph
May 21, 2011
8:07 PM CST-6
Wind report for May 21, 2011
Grundy County · 3,915 Homes in County
Wind Report Description: Thunderstorm wind gusts were estimated up to 60 mph.
NWS Wind Report Location: .69 S Coburn, MO
70 mph
May 21, 2011
8:05 PM CST-6
Wind report for May 21, 2011
Crawford County · 5,262 Homes in County
Wind Report Description: Power poles blown down.
NWS Wind Report Location: 3.15 WSW Schleswig, IA
58 mph
May 21, 2011
7:57 PM CST-6
Wind report for May 21, 2011
Williamson County · 183,198 Homes in County
Wind Report Description: A thunderstorm produced wind gusts to an estimated 50 knots which caused damage to mobile homes and blew down some fences in and around Andice.
NWS Wind Report Location: N Andice, TX
60 mph
May 21, 2011
7:53 PM CST-6
Wind report for May 21, 2011
Decatur County · 2,834 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: N (30I)Lamoni Muni Arp, IA
Showing 15 of 37
Wind Damage Risk for Your Home +

Storm reports list thunderstorm wind gusts in mph. The NWS marks storms as severe at 58+ mph, but wind damage to your home depends on roof age, shingle condition, installation, exposure, nearby trees, and prior hail or wind damage.

Below Severe
Under 58 mph
Minor

Usually little damage to a sound roof, but loose shingles, flashing, or debris may shift.

Severe
58–74 mph
Watch

Can loosen shingles, lift flashing, break limbs, and damage gutters, siding, fences, or trim.

Damaging
75–90 mph
Serious

Can peel shingles, damage vents, tear siding, rip gutters, and expose weak roof areas.

Extreme
90+ mph
Major

Can cause major roof covering loss, tree damage, broken windows, and structural damage.

Source: NOAA / National Weather Service storm reports. Gusts may be measured or estimated; actual wind damage varies by roof condition, exposure, and prior hail or wind damage.

NWS Tornado Reports on May 21, 2011

21 reports
EF0 category
May 21, 2011
9:48 PM CST-6
Tornado report for May 21, 2011
Franklin County · 8,614 Homes in County
Tornado Report Description: This segment is the extension of the tornado that hit Quenemo in Osage county and weakened as it moved into Franklin County. Only sporadic tree damage was noted in Franklin County as the tornado weakened before dissipating.
NWS Tornado Report Location: 4.06 SW Pomona, KS
EF1 category
May 21, 2011
9:43 PM CST-6
Tornado report for May 21, 2011
Osage County · 6,057 Homes in County
Tornado Report Description: A tornado developed just west of Quenemo touching down on the west side of town. It destroyed two structures both garages producing winds around 90 mph. The damage path continued east to around 2.5 miles southwest of Pomona in Franklin County where only minor tree damage was noted.
NWS Tornado Report Location: .75 WSW Lomax, KS
EF0 category
May 21, 2011
9:41 PM CST-6
Tornado report for May 21, 2011
Douglas County · 28,496 Homes in County
Tornado Report Description: A storm chaser witnessed a brief tornado touchdown just east of highway 56 and south of highway 59 in southern Douglas County. The tornado dissipated after 15 seconds and did no damage. The report was relayed by the County EM.
NWS Tornado Report Location: 3.94 ESE Worden, KS
EF1 category
May 21, 2011
8:20 PM CST-6
Tornado report for May 21, 2011
Osage County · 6,057 Homes in County
Tornado Report Description: The tornado that hit Reading then moved out of Lyon County and into Osage County. It produced EF1 damage at one farmstead in Osage County before weakening and producing additional minor and sporadic tree damage. This segment is that portion of the tornado that moved out of Lyon County and into Osage County before dissipating south of Osage City. Another separate EF0 tornado was discovered on the northwest periphery of this main tornado track.
NWS Tornado Report Location: 5.5 SW Barclay, KS
EF0 category
May 21, 2011
8:20 PM CST-6
Tornado report for May 21, 2011
Osage County · 6,057 Homes in County
Tornado Report Description: A narrow damage path was noted to the northwest of the main tornado damage path associated with the Reading tornado. This path featured damage to trees and a cow pen. Trees were blown down to the west and the cow pen was blown toward the northeast within this narrow path. This tornado appeared to be separate from the main tornado that hit Reading and moved into Osage County.
NWS Tornado Report Location: 2.7 SSW Barclay, KS
EF3 category
May 21, 2011
8:10 PM CST-6
Tornado report for May 21, 2011
Lyon County · 9,338 Homes in County
Tornado Report Description: Another tornado developed 3 miles southwest of Reading. This tornado proceeded to hit the town of Reading producing EF3 damage in the city. The tornado continued on a path that took it into Osage County Kansas where it produced additional damage before lifting approximately 4 miles south of Osage City. A single story home in Reading was swept off its foundation. There were several two story homes with significant damage to the second story or completely removed. A well anchored mobile home was lofted and thrown 50 yards into a tree. Vehicles were rolled and large chemical tank was thrown 100 yards. Winds estimated at 140 mph.
NWS Tornado Report Location: 3.07 WSW Reading, KS
EF0 category
May 21, 2011
8:00 PM CST-6
Tornado report for May 21, 2011
Williamson County · 183,198 Homes in County
Tornado Report Description: The National Weather Service conducted a damage survey near the Andice area in western Williamson County. Talking to several local residents have brought the conclusion that the initial spin up of the weak tornado occurred around 9pm and|lasted probably 5 minutes as it tracked to the North Northeast. Residents to the southeast of Andice reported seeing a lot of circulation under the storm with several different funnels. Damage was first seen just to the south of ranch road 2338 about 1.5 miles SSE of Andice. Minor damage to several mobile homes occurred at this area including a carport and deck which were destroyed. The tornado crossed Ranch Road 2338 and went NNE and crossed county roads 250 and 251. Several areas of tree damage were noted. Two residences along County Road 251 experienced damage including a screened in porch that was tossed over the house. Large hay bales were also found in the road...being rolled many yards from their original location. There were no deaths or injuries. Maximum winds are estimated to have been 80 MPH.
NWS Tornado Report Location: 1.37 SE Andice, TX
EF1 category
May 21, 2011
7:50 PM CST-6
Tornado report for May 21, 2011
Lyon County · 9,338 Homes in County
Tornado Report Description: The tornado first touched down northeast of the Emporia State University campus and proceeded northeast. Several large trees were snapped, a chimney collapsed on top of a home and some farm outbuildings were heavily damaged. This tornado lifted before reaching the town of Reading.
NWS Tornado Report Location: 3.29 NNE Emporia, KS
EF1 category
May 21, 2011
7:41 PM CST-6
Tornado report for May 21, 2011
Pontotoc County · 13,460 Homes in County
Tornado Report Description: Spotters and storm chasers observed a tornado develop about 0.5 miles northwest of the community of Center which is located to the west-northwest of Ada. The tornado damaged a few homes in Center as it moved generally east. Monetary damage estimates were not available.
NWS Tornado Report Location: 4 NE Vanoss, OK
EF0 category
May 21, 2011
7:29 PM CST-6
Tornado report for May 21, 2011
Pontotoc County · 13,460 Homes in County
Tornado Report Description: Spotters and storm chasers observed a relatively brief tornado north-northeast of Vanoss. No known damage occurred.
NWS Tornado Report Location: 2 NNE Vanoss, OK
EF0 category
May 21, 2011
7:18 PM CST-6
Tornado report for May 21, 2011
Pontotoc County · 13,460 Homes in County
Tornado Report Description: A number of storm chasers observed a tornado northwest of Vanoss. No known damage occurred.
NWS Tornado Report Location: 2 NW Vanoss, OK
EF1 category
May 21, 2011
6:40 PM CST-6
Tornado report for May 21, 2011
Pontotoc County · 13,460 Homes in County
Tornado Report Description: This large multiple vortex tornado moved into Pontotoc County from Murray County and moved east-northeast and northeast. The tornado damaged trees and power lines, but no structures were reported to be damaged. Monetary damages were estimated.
NWS Tornado Report Location: 5 SSE Roff, OK
EF0 category
May 21, 2011
6:39 PM CST-6
Tornado report for May 21, 2011
Murray County · 5,067 Homes in County
Tornado Report Description: Numerous storm chasers observed a multiple vortex tornado develop east of Hickory and move east-northeast into southeastern Pontotoc County. There was no known damage in Murray County.
NWS Tornado Report Location: 1.5 E Hickory, OK
EF0 category
May 21, 2011
6:30 PM CST-6
Tornado report for May 21, 2011
Andrew County · 6,160 Homes in County
Tornado Report Description: At 1830CST, an EF0 tornado touched down nearly 4 miles southeast of Fillmore. The tornado moved around a mile northeast, before lifting at 1833CST, about 4 miles east of Fillmore. Minor damage was reported to three homes. Tree damage was also reported.
NWS Tornado Report Location: 3.82 ESE Fillmore, MO
EF0 category
May 21, 2011
6:20 PM CST-6
Tornado report for May 21, 2011
Jefferson County · 7,014 Homes in County
Tornado Report Description: A brief and weak tornado which began as a waterspout over Lake Perry came ashore and produced tree damage around Lakeside Village. One tree fell on a mobile home and entrapped the resident for a period of time. No injuries were reported.
NWS Tornado Report Location: 3.8 S Ozawkie, KS
Showing 15 of 21
Tornado Damage Risk for Your Home +

After a tornado, the National Weather Service assigns an EF rating from EF0 to EF5 based on surveyed damage. The rating estimates wind speed from what the tornado damaged, so actual damage can vary by construction quality, roof age, garage doors, windows, trees, debris, and how close the home was to the tornado path.

EF0
65–85 mph
Light

Can peel shingles, damage gutters or siding, break tree limbs, and toss loose outdoor items.

EF1
86–110 mph
Moderate

Can strip roof covering, damage exterior doors, break windows, snap trees, and cause heavier siding or gutter damage.

EF2
111–135 mph
Serious

Can tear off large sections of roofing, break or uproot trees, destroy weaker structures, and cause major exterior damage.

EF3–EF5
136+ mph
Severe

Can remove roofs and walls, destroy large portions of homes, toss vehicles, and cause severe to total destruction near the path.

Source: NOAA / National Weather Service. EF ratings are assigned after a post-storm damage survey and are based on observed damage, not a direct measurement at every home.

NWS Hail, Wind and Tornado Reports on May 21, 2011 on the Interactive Map

Report type
Hail
Wind
Tornado

Get a Remote Hail Inspection

Not sure if hail may have affected your home on May 21, 2011? Ask a local pro for a Remote Hail Inspection. They can review hail activity for your property and help you decide whether an in-person roof or exterior inspection makes sense.

Frequently asked questions

for homeowners, buyers & sellers
How many storm reports were recorded on May 21, 2011?

Our records show 280 hail, 37 wind, and 21 tornado reports on May 21, 2011, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on May 21, 2011.

What was the largest hail reported on May 21, 2011?

The largest hail size in these storm-report records on May 21, 2011 is 5.25″, reported near Topeka, KS.

Some reports show UNK instead of a wind speed or tornado rating — what does that mean?

Wind reports come three ways: measured from an instrument, estimated from the damage observed, or UNK when no speed was recorded. Tornadoes show UNK until the National Weather Service finishes a damage survey and assigns an EF rating. UNK simply means that value was not available when the report was filed.

A report appeared near my home on May 21, 2011 — is my roof damaged?

Not necessarily. A storm report shows that hail, wind, or a tornado was observed nearby, not that any specific home was hit. To find out whether your property was affected, check an address-level hail report, and if it looks significant, ask a local pro about a Remote Hail Inspection before scheduling roof work.

I am buying or selling a home — how do these on May 21, 2011 reports help?

If a storm passed through, a roof or exterior may have damage that is hard to see, or a recent repair may trace back to it. Buyers can ask better questions before closing, and sellers can document the home condition up front — both starting from the property address rather than a whole region.

How do I check what happened at a specific address on May 21, 2011?

Use the address search to pull a free address-level hail report for any property — no phone number or email required. It shows recent hail activity for that address so you know whether a closer roof or exterior review makes sense.

Where does this storm report data come from, and what are its limits?

Storm reports on this page are public reports from storm events on May 21, 2011 across the United States, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported, but they do not confirm damage at any specific property. Report locations, sizes, and times may be approximate and can vary from what an individual home experienced. For property-specific hail history, use an address-level hail report or contact a participating local professional for a remote hail inspection. Pros inclusion is not an endorsement, and contacting a professional does not confirm damage at any property.

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