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NOAA/NWS STORM PREDICTION CENTER STORM REPORTS

Hail, Wind & Tornado Reports on April 21, 2021

Public hail, wind, and tornado reports across the United States on April 21, 2021 from April 21, 2021 through April 21, 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 19, 2026.
Hail Reports
8
Wind Reports
75
Tornado Reports
2
Max Hail Size
1.00″
Source  NOAA SPC · NWS Local Storm Reports Coverage  United States · April 21, 2021 · 2021–present Updated  Daily · last Apr 21, 2021

NWS Hail Reports on April 21, 2021

8 reports
Free hail report for your home →
1.00″ hail
Apr 21, 2021
6:23 PM UTC
Hail report for April 21, 2021
Cumberland County · 38,343 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Millville, NJ
1.00″ hail
Apr 21, 2021
6:22 PM UTC
Hail report for April 21, 2021
Ocean County · 220,452 Homes in County
Hail Report Description: AN MPING REPORT OF QUARTER SIZE HAIL. TIME ESTIMATED FROM RADAR.
NWS Hail Report Location: 2 NW Berkeley Twp, NJ
1.00″ hail
Apr 21, 2021
6:14 PM UTC
Hail report for April 21, 2021
Sussex County · 96,595 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Seaford, DE
1.00″ hail
Apr 21, 2021
6:14 PM UTC
Hail report for April 21, 2021
Sussex County · 96,595 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Bridgeville, DE
1.00″ hail
Apr 21, 2021
6:12 PM UTC
Hail report for April 21, 2021
Sussex County · 96,595 Homes in County
Hail Report Description: TIME ESTIMATED FROM RADAR.
NWS Hail Report Location: Seaford, DE
1.00″ hail
Apr 21, 2021
6:12 PM UTC
Hail report for April 21, 2021
Sussex County · 96,595 Homes in County
Hail Report Description: TIME ESTIMATED FROM RADAR.
NWS Hail Report Location: Bridgeville, DE
1.00″ hail
Apr 21, 2021
5:20 PM UTC
Hail report for April 21, 2021
Queen Anne's County · 17,804 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 SE Church Hill, MD
1.00″ hail
Apr 21, 2021
4:22 PM UTC
Hail report for April 21, 2021
Berks County · 96,137 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 S Boyertown, PA
Showing 8 of 8
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 April 21, 2021

75 reports
Free hail report + wind check →
UNK mph
Apr 21, 2021
11:05 PM UTC
Wind report for April 21, 2021
St. Mary's County · 33,775 Homes in County
Wind Report Description: TREE DOWN ALONG DIXIE LYON ROAD NEAR OEMA COURT. *PREVIOUS REPORT*
NWS Wind Report Location: 2 S Charlotte Hall, MD
UNK mph
Apr 21, 2021
10:27 PM UTC
Wind report for April 21, 2021
Madison County · 45,710 Homes in County
Wind Report Description: SEVERAL BUILDINGS DAMAGED DOWNTOWN ANDERSON. A COUPLE WINDOWS BLOWN OUT AND A PORTION OF ROOF DAMAGED 1500 BLOCK OF NOBLE ST. STORE FRONT AT 14TH AND MERIDIAN ALSO HAD A WINDOW BLOWN OUT. AN RV WAS FLIPPED OVER IN PARKING LOT AT 32ND AND SCATTERFIELD. ROOF OF WAREHOUSE PARTIALLY OFF IN SAME AREA.
NWS Wind Report Location: Anderson, IN
UNK mph
Apr 21, 2021
10:25 PM UTC
Wind report for April 21, 2021
Madison County · 45,710 Homes in County
Wind Report Description: THREE TREES UPROOTED IN AREA NEAR WEST 7TH AND 8TH STREETS IN ANDERSON. ONE APPROXIMATELY 36 INCHES IN DIAMETER... ANOTHER 48 INCHES IN DIAMETER. TWO HOMES SUSTAINED STRUCTURAL DAMAGE FROM THESE TREES FALLING ONTO ROOFS.
NWS Wind Report Location: Anderson, IN
UNK mph
Apr 21, 2021
9:15 PM UTC
Wind report for April 21, 2021
Hillsborough County · 100,287 Homes in County
Wind Report Description: TREE DOWN ON WIRES ACROSS BEARD ROAD. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: Goffstown, NH
UNK mph
Apr 21, 2021
8:50 PM UTC
Wind report for April 21, 2021
Worcester County · 201,388 Homes in County
Wind Report Description: TREE AND WIRES DOWN ON GROVE STREET.
NWS Wind Report Location: Leicester, MA
UNK mph
Apr 21, 2021
8:40 PM UTC
Wind report for April 21, 2021
Worcester County · 201,388 Homes in County
Wind Report Description: TREE AND POWER LINES DOWN AT MCEVOY ROAD AND RAVINE ROAD.
NWS Wind Report Location: New Braintree, MA
UNK mph
Apr 21, 2021
8:37 PM UTC
Wind report for April 21, 2021
Worcester County · 201,388 Homes in County
Wind Report Description: TREE DOWN ON UPPER CHURCH ROAD AND TREE DOWN ON WIRES ON LOWER ROAD.
NWS Wind Report Location: Hardwick, MA
UNK mph
Apr 21, 2021
8:36 PM UTC
Wind report for April 21, 2021
Worcester County · 201,388 Homes in County
Wind Report Description: LARGE TREES DOWN ON WIRES ON MAIN STREET... WARE ROAD... AND DEAN STREET AT NORTH STREET.
NWS Wind Report Location: Warren, MA
UNK mph
Apr 21, 2021
8:23 PM UTC
Wind report for April 21, 2021
Hampden County · 110,733 Homes in County
Wind Report Description: TWO TREES DOWN ACROSS GENERAL KNOX ROAD.
NWS Wind Report Location: Russell, MA
UNK mph
Apr 21, 2021
8:21 PM UTC
Wind report for April 21, 2021
Hampshire County · 39,717 Homes in County
Wind Report Description: TREE DOWN IN YARDS ON GOSS HILL ROAD BY STAGE ROAD.
NWS Wind Report Location: Huntington, MA
UNK mph
Apr 21, 2021
8:15 PM UTC
Wind report for April 21, 2021
Hampden County · 110,733 Homes in County
Wind Report Description: TREES AND WIRES DOWN AT WESTOVER GOLF COURSE. TREE DOWN ON WAVERLY CIRCLE.
NWS Wind Report Location: Ludlow, MA
UNK mph
Apr 21, 2021
8:12 PM UTC
Wind report for April 21, 2021
Hampden County · 110,733 Homes in County
Wind Report Description: SEVERAL UTILITY POLES SNAPPED... TREES AND WIRES DOWN ON SOUTH LONGYARD ROAD AND SLEEP PASTURE ROAD.
NWS Wind Report Location: Southwick, MA
72 mph
Apr 21, 2021
8:10 PM UTC
Wind report for April 21, 2021
Hampden County · 110,733 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Chicopee, MA
UNK mph
Apr 21, 2021
8:10 PM UTC
Wind report for April 21, 2021
Hampden County · 110,733 Homes in County
Wind Report Description: TREE DOWN BLOCKING CHICOPEE STREET AT CARPENTER BLVD.
NWS Wind Report Location: Chicopee, MA
UNK mph
Apr 21, 2021
8:05 PM UTC
Wind report for April 21, 2021
Hartford County
Wind Report Description: TREE DOWN ON WIRES ON GEORGE WASHINGTON RD.
NWS Wind Report Location: Enfield, CT
Showing 15 of 75
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 April 21, 2021

2 reports
UNK category
Apr 21, 2021
6:49 PM UTC
Tornado report for April 21, 2021
Litchfield County
Tornado Report Description: NWS SURVEY TEAM CONFIRMED AN EF-0 TORNADO NEAR BULLS BRIDGE... CT. MAX WINDS OF 85 MPH.
NWS Tornado Report Location: 3 SSW Kent, CT
UNK category
Apr 21, 2021
6:49 PM UTC
Tornado report for April 21, 2021
Dutchess County · 76,724 Homes in County
Tornado Report Description: EF-1 TORNADO WAS CONFIRMED IN THE TOWN OF AMENIA... NY. MAX WINDS OF 100 MPH.
NWS Tornado Report Location: Amenia, NY
Showing 2 of 2
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 April 21, 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 April 21, 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 April 21, 2021?

Our records show 8 hail, 75 wind, and 2 tornado reports on April 21, 2021, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on April 21, 2021.

What was the largest hail reported on April 21, 2021?

The largest hail size in these storm-report records on April 21, 2021 is 1.00″, reported near Millville, NJ.

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 April 21, 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 April 21, 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 April 21, 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 April 21, 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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