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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on May 20, 2021

Public hail, wind, and tornado reports across the United States on May 20, 2021 from May 20, 2021 through May 20, 2021, 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
0
Wind Reports
17
Tornado Reports
17
Max Hail Size
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Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · May 20, 2021 · 2021–present Updated  Daily · last May 20, 2021

NWS Hail Reports on May 20, 2021

0 reports
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No hail reports were found for this selection.

Showing 0 of 0
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 20, 2021

17 reports
Free hail report + wind check →
UNK mph
May 20, 2021
10:08 PM UTC
Wind report for May 20, 2021
Buchanan County · 28,245 Homes in County
Wind Report Description: TREE LIMBS DOWNED AROUND NORTH ST. JOSEPH. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: 2 NNW Saint Joseph, MO
UNK mph
May 20, 2021
8:28 PM UTC
Wind report for May 20, 2021
Angelina County · 24,247 Homes in County
Wind Report Description: PUBLIC REPORTS LIMBS DOWN... AND DAMAGE TO A PORCH ATTACHED TO A HOME.
NWS Wind Report Location: 4 ENE Lufkin, TX
UNK mph
May 20, 2021
4:15 AM UTC
Wind report for May 20, 2021
Brazoria County · 106,699 Homes in County
Wind Report Description: MULTIPLE TREES DOWN AROUND ANGLETON.
NWS Wind Report Location: 1 N Angleton, TX
UNK mph
May 20, 2021
3:55 AM UTC
Wind report for May 20, 2021
Harris County · 1,069,971 Homes in County
Wind Report Description: CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 SSW CROSBY. BROKEN TREE LIMBS... SNAPPED POWER POLES... AND DOWNED TREES REPORTED BY PUBLIC ON SOCIAL MEDIA DUE TO STRONG WINDS AT AROUND 11:45 PM CDT.
NWS Wind Report Location: 1 SSW Crosby, TX
59 mph
May 20, 2021
3:45 AM UTC
Wind report for May 20, 2021
Weber County · 70,303 Homes in County
Wind Report Description: GREAT SALT LAKE MINERALS SENSOR GSLM
NWS Wind Report Location: 11 NW Hooper, UT
UNK mph
May 20, 2021
3:30 AM UTC
Wind report for May 20, 2021
Harris County · 1,069,971 Homes in County
Wind Report Description: CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 6 NW JACINTO CITY. CITY OF HOUSTON EMERGENCY MANAGEMENT REPORTS SEVERAL TREES DOWN ACROSS NORTHEAST HOUSTON STRETCHING FROM TRINITY AND HOUSTON GARDENS TO MOUNT HOUSTON TO GREENWOOD PARK.
NWS Wind Report Location: 6 NW Jacinto City, TX
UNK mph
May 20, 2021
3:30 AM UTC
Wind report for May 20, 2021
Harris County · 1,069,971 Homes in County
Wind Report Description: CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 6 NNW JACINTO CITY. PUBLIC REPORTS ON SOCIAL MEDIA OF TREES DOWN AND BROKEN TREE LIMBS NEAR WAYSIDE DRIVE AND TIDWELL ROAD IN NORTHEAST HOUSTON AROUND 11:25 PM CDT.
NWS Wind Report Location: 6 NNW Jacinto City, TX
UNK mph
May 20, 2021
3:15 AM UTC
Wind report for May 20, 2021
Harris County · 1,069,971 Homes in County
Wind Report Description: CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 N WEST UNIVERSITY PLACE. CITY OF HOUSTON EMERGENCY MANAGEMENT REPORTS SEVERAL TREES DOWN ACROSS THE HEIGHTS REGION OF NORTHWEST HOUSTON.
NWS Wind Report Location: 2 N West University Pla, TX
UNK mph
May 20, 2021
3:15 AM UTC
Wind report for May 20, 2021
Harris County · 1,069,971 Homes in County
Wind Report Description: CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 ENE WEST UNIVERSITY PLACE. CITY OF HOUSTON EMERGENCY MANAGEMENT REPORTS SEVERAL TREES DOWN ACROSS THE RIVER OAKS AND MONTROSE AREAS OF HOUSTON.
NWS Wind Report Location: 1 ENE West University P, TX
UNK mph
May 20, 2021
2:55 AM UTC
Wind report for May 20, 2021
Harris County · 1,069,971 Homes in County
Wind Report Description: MULTIPLE TREES DOWN IN THE NEIGHBORHOOD.
NWS Wind Report Location: 3 W Bunker Hill Village, TX
UNK mph
May 20, 2021
2:50 AM UTC
Wind report for May 20, 2021
Fort Bend County · 245,863 Homes in County
Wind Report Description: CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 NW TOWN WEST. CITY OF HOUSTON EMERGENCY MANAGEMENT REPORTS SEVERAL TREES DOWN ACROSS THE MISSION BEND REGION OF SOUTHWEST HOUSTON.
NWS Wind Report Location: 1 NW Town West, TX
63 mph
May 20, 2021
2:45 AM UTC
Wind report for May 20, 2021
Tooele County · 19,429 Homes in County
Wind Report Description: HORIZONTAL GRID DPG08 SENSOR
NWS Wind Report Location: 22 W Dugway, UT
UNK mph
May 20, 2021
2:40 AM UTC
Wind report for May 20, 2021
Montgomery County · 171,520 Homes in County
Wind Report Description: TREES DOWN ALONG FM 149 NEAR KEENAN CUTOFF ROAD AND LAKE CREEK.
NWS Wind Report Location: 5 S Montgomery, TX
64 mph
May 20, 2021
2:15 AM UTC
Wind report for May 20, 2021
Tooele County · 19,429 Homes in County
Wind Report Description: SALT FLATS DPG15 SENSOR
NWS Wind Report Location: 25 SSW Clive, UT
63 mph
May 20, 2021
1:40 AM UTC
Wind report for May 20, 2021
Tooele County · 19,429 Homes in County
Wind Report Description: ANOTHER MICROBURST OCCURRED AT 0310Z.
NWS Wind Report Location: 7 NNE Clive, UT
Showing 15 of 17
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 20, 2021

17 reports
UNK category
May 20, 2021
9:38 PM UTC
Tornado report for May 20, 2021
Harrison County · 20,417 Homes in County
Tornado Report Description: STORM CHASER DRONE FOOTAGE OBSERVED A VERY BRIEF TORNADO CROSSING A SMALL POND AND PRODUCING NO DAMAGE INDICATORS.
NWS Tornado Report Location: 4 NNW Hallsville, TX
UNK category
May 20, 2021
8:25 PM UTC
Tornado report for May 20, 2021
Angelina County · 24,247 Homes in County
Tornado Report Description: TORNADO TRACKED NORTH NORTHWEST THROUGH RURAL AREAS OF NORTHWESTERN ANGELINA COUNTY DOING MAINLY TREE DAMAGE. THE TORNADO PATH LENGTH OF 2.6 MILES IS ESTIMATED DUE TO LACK OF ROAD ACCESS NEAR THE ESTIMATED STARTING AND ENDING POINTS. ESTIMATED PEAK WIND OF 100 MPH AND PEAK WIDTH OF 75 YARDS.
NWS Tornado Report Location: 5 W Hudson, TX
UNK category
May 20, 2021
4:09 PM UTC
Tornado report for May 20, 2021
Harris County · 1,069,971 Homes in County
Tornado Report Description: BRIEF TORNADO TOUCHED DOWN IN PARKING LOT OF CROSBY MEADOWS APARTMENTS. ON GROUND FOR JUST A SHORT TIME... LESS THAN A MINUTE. DAMAGE TO THE FACADE OF AN EXTERIOR WALL. SWIRLING WINDS CONFIRMED BY VIDEO.
NWS Tornado Report Location: 1 S Crosby, TX
UNK category
May 20, 2021
2:16 AM UTC
Tornado report for May 20, 2021
Scurry County · 5,686 Homes in County
Tornado Report Description: EMERGENCY MANAGER REPORTS FUNNEL CLOUD WITH DUST CLOUD UNDERNEATH LOOKING WNW FROM RANCH RD 1229. NO DAMAGE REPORTED... PRELIMINARY RATING EFU.
NWS Tornado Report Location: 7 NE Vincent, TX
UNK category
May 20, 2021
1:42 AM UTC
Tornado report for May 20, 2021
Scott County · 40,267 Homes in County
Tornado Report Description: REPORTED AS RAIN WRAPPED. REPORT RELAYED BY SCOTT COUNTY 911.
NWS Tornado Report Location: 2 E Elko New Market, MN
UNK category
May 20, 2021
1:27 AM UTC
Tornado report for May 20, 2021
Rice County · 17,930 Homes in County
Tornado Report Description: RELAYED BY RICE COUNTY SKYWARN. APPROXIMATE LOCATION NEAR WEBSTER.
NWS Tornado Report Location: 3 SSE Elko New Market, MN
UNK category
May 20, 2021
1:21 AM UTC
Tornado report for May 20, 2021
Rice County · 17,930 Homes in County
Tornado Report Description: RELAYED BY RICE COUNTY SKYWARN. STORM CHASER SAW TREES DOWNED.
NWS Tornado Report Location: 6 WSW Dundas, MN
UNK category
May 20, 2021
1:01 AM UTC
Tornado report for May 20, 2021
Scott County · 40,267 Homes in County
Tornado Report Description: CROSSED HIGHWAY 19 4 ENE HENDERSON ALONG THE SCOTT LE SUEUR COUNTY LINE.
NWS Tornado Report Location: 4 ENE Henderson, MN
UNK category
May 20, 2021
12:47 AM UTC
Tornado report for May 20, 2021
Carroll County · 51,140 Homes in County
Tornado Report Description: EF0 TORNADO. 0.2MI PATH LENGTH. 75 YARDS PATH WIDTH. PEAK WIND 80MPH.
NWS Tornado Report Location: 1 ENE Marston, MD
UNK category
May 20, 2021
12:45 AM UTC
Tornado report for May 20, 2021
Rice County · 17,930 Homes in County
Tornado Report Description: SEPARATE TORNADO FROM THE OTHER ONE 3 E MORRISTOWN. THE TORNADOES WERE SEPARATED BY ABOUT ONE MILE. BOTH WERE PHOTOGRAPHED AND CAUGHT ON VIDEO BY A LONGTIME SPOTTER.
NWS Tornado Report Location: 3 E Morristown, MN
UNK category
May 20, 2021
12:45 AM UTC
Tornado report for May 20, 2021
Rice County · 17,930 Homes in County
Tornado Report Description: TREES DOWN. NO STRUCTURES WERE DAMAGED. CAUGHT ON PICTURES AND VIDEO. THIS WAS A BRIEF TOUCHDOWN. ANOTHER FUNNEL WAS CLOSE BY BUT COULD NOT SEE WHETHER THAT TOUCHED DOWN.
NWS Tornado Report Location: 3 E Morristown, MN
UNK category
May 20, 2021
12:43 AM UTC
Tornado report for May 20, 2021
Steele County · 12,070 Homes in County
Tornado Report Description: SECOND OF TWO TORNADOES WEST OF OWATONNA. LOCATION APPROXIMATE.
NWS Tornado Report Location: 4 W Owatonna, MN
UNK category
May 20, 2021
12:43 AM UTC
Tornado report for May 20, 2021
Steele County · 12,070 Homes in County
Tornado Report Description: ONE OF TWO TORNADOES WEST OF OWATONNA. LOCATION APPROXIMATE. WENT NORTH TOWARD MEDFORD.
NWS Tornado Report Location: 3 W Owatonna, MN
UNK category
May 20, 2021
12:35 AM UTC
Tornado report for May 20, 2021
Frederick County · 64,079 Homes in County
Tornado Report Description: EF1 TORNADO. 0.7MI LATH LENGTH. 150 YARDS PATH WIDTH. PEAK WIND 90MPH.
NWS Tornado Report Location: 3 WSW Marston, MD
UNK category
May 20, 2021
12:25 AM UTC
Tornado report for May 20, 2021
Steele County · 12,070 Homes in County
Tornado Report Description: CORRECTS APPROXIMATE TIME OF PREVIOUS TORNADO REPORT FROM 3 W OWATONNA. ONE OF TWO TORNADOES WEST OF OWATONNA. LOCATION APPROXIMATE. WENT NORTH TOWARD MEDFORD.
NWS Tornado Report Location: 3 W Owatonna, MN
Showing 15 of 17
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 20, 2021 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 20, 2021? 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 20, 2021?

Our records show 0 hail, 17 wind, and 17 tornado reports on May 20, 2021, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on May 20, 2021.

What was the largest hail reported on May 20, 2021?

No reported hail size is available for this selection.

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 20, 2021 — 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 20, 2021 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 20, 2021?

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 20, 2021 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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