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NOAA/NWS STORM PREDICTION CENTER REPORTS + U.S. CENSUS DATA

Hail, Wind & Tornado Reports in and near ZIP 20166

Public hail, wind, and tornado reports in and near ZIP 20166 from June 26, 1978 through September 4, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 20166 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
17
Wind Reports
55
Tornado Reports
2
Max Hail Size
2.75″
Source  NOAA SPC · NWS Local Storm Reports Coverage  ZIP 20166 · 1978–present Updated  Daily · last Sep 4, 2026

Latest NWS Hail Reports in and near ZIP 20166

17 reports
Free hail report for your home →
1.75″ hail
Aug 29, 2024
8:55 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2 N Sterling Park, VA
2.50″ hail
Aug 29, 2024
8:48 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Hail 2.5 inches in diameter reported on Ridgetop Circle in Sterling. Numerous vehicles with broken windshields.
NWS Hail Report Location: 2 SSE Countryside, VA
1.50″ hail
May 23, 2024
8:48 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Ping pong sized hail in Strasburg... VA.
NWS Hail Report Location: 3 NW Dulles Internation, VA
1.50″ hail
Sep 8, 2023
10:35 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Another round of quarter to ping pong ball size hail was observed at the NWS Sterling Office between 6:35 and 6:45 PM.
NWS Hail Report Location: 3 NW Dulles Internation, VA
1.25″ hail
Sep 8, 2023
10:10 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 WSW Sterling Park, VA
1.25″ hail
Sep 8, 2023
10:00 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Hail of up to half dollar size was observed for about 15 minutes from 6:00 to 6:15 PM at the NWS Office in Sterling. Hail covered the ground.
NWS Hail Report Location: 3 NW Dulles Internation, VA
1.00″ hail
Sep 8, 2023
9:42 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Arcola, VA
1.00″ hail
Sep 7, 2023
6:10 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Quarter size hail was observed at the NWS Office in Sterling.
NWS Hail Report Location: 3 NW Dulles Internation, VA
1.00″ hail
Jun 2, 2019
9:29 PM UTC
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: DIME TO QUARTER SIZE HAIL AT DULLES SHOPPING CENTER
NWS Hail Report Location: 2 WNW Sterling Park, VA
0.75″ hail
May 31, 2008
12:24 PM EST-5
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: An NWS Employee reported penny size hail in the Stone Ridge community of Arcola.
NWS Hail Report Location: .69 S Arcola, VA
0.75″ hail
Aug 27, 2003
5:55 PM EST
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Penny sized hail fell.
NWS Hail Report Location: Sterling, VA
2.75″ hail
May 2, 2002
2:20 PM EST
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Walnut to baseball sized hail fell.
NWS Hail Report Location: Sterling, VA
0.75″ hail
Jul 16, 2000
5:35 PM EST
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Dime sized hail fell.
NWS Hail Report Location: Sterling, VA
0.88″ hail
Jul 14, 2000
9:23 PM EST
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Dime to nickel sized hail fell.
NWS Hail Report Location: 1 N Dulles Intl Arpt, VA
0.75″ hail
Jul 14, 2000
9:11 PM EST
Hail report for ZIP 20166
Loudoun County · 74,711 Homes in County
Hail Report Description: Dime sized hail damaged vegetation and dented cars.
NWS Hail Report Location: Sterling, VA
Showing 15 of 17
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.

Latest NWS Wind Reports in and near ZIP 20166

55 reports
Free hail report + wind check →
62 mph
Sep 4, 2026
3:30 AM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Elaine E. Thompson Elementary School (NGA65) gusted to 62 mph at 11:30 pm.
NWS Wind Report Location: 1 Sse Arcola, VA
67 mph
Jun 12, 2026
10:53 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
66 mph
Mar 17, 2026
12:38 AM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles International Ai, VA
61 mph
Mar 17, 2026
12:34 AM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Measured at WFO LWX
NWS Wind Report Location: 3 NW Dulles Internation, VA
70 mph
Jun 25, 2025
7:23 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
66 mph
Jun 19, 2025
7:50 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A wind gust of 57 knots (66 MPH) was measured by the ASOS at Washington Dulles International Airport (KIAD).
NWS Wind Report Location: Dulles Intl Airport, VA
UNK mph
Jun 19, 2025
7:50 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Trees blew down onto southbound VA-28 Sully Road past VA-606 Old Ox Road.
NWS Wind Report Location: 2 SW Oak Grove, VA
75 mph
Jun 19, 2025
7:49 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: DELAYED REPORT... CORRECTED TIME: A wind gust of 65 knots (75 MPH) was measured by an ASOS at the NWS Sterling Field Support Center (SFSC).
NWS Wind Report Location: 3 NW Dulles Internation, VA
75 mph
Jun 19, 2025
6:49 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: DELAYED REPORT: A wind gust of 65 knots (75 MPH) was measured by an ASOS at the NWS Sterling Field Support Center (SFSC).
NWS Wind Report Location: 3 NW Dulles Internation, VA
59 mph
Jul 14, 2023
9:35 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
61 mph
Jul 12, 2022
9:28 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
59 mph
May 22, 2022
11:06 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
58 mph
May 22, 2022
10:56 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
UNK mph
Jun 30, 2021
11:37 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: DOWNED TREE... DOWNED WIRES... AND DOWNED POLE ALONG VA-621 EASTBOUND BEFORE LOUDOUN CO. PARKWAY; ALL LANES BLOCKED.
NWS Wind Report Location: 1 ESE Arcola, VA
66 mph
Aug 15, 2019
7:19 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Dulles Intl Airport, VA
Showing 15 of 55
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.

Latest NWS Tornado Reports in and near ZIP 20166

2 reports
F2 category
Sep 17, 2004
5:12 PM EST
Tornado report for ZIP 20166
Loudoun County · 74,711 Homes in County
Tornado Report Description: A thunderstorm moved into eastern Loudoun County from Fairfax County near the Dulles International Airport. The storm produced a tornado which touched down at Dulles International Airport and passed within one half mile of the National Weather Service Forecast Office in Sterling. This prompted the staff on duty to seek shelter in the office constructed saferoom. As the storm traveled north from the Dulles International Airport, it produced minor tree damage. More extensive damage occurred north of Waxpool Road at the Beaumede Corporate Park. Seven buildings were damaged. A wall collapsed in one of the buildings. A tractor trailer was overturned. The tornado also pushed two cars into the side of a building. The tornado weakened as it traveled north. The last damage in Loudoun County was reported just north of Route 7.
NWS Tornado Report Location: Dulles Intl Arpt, VA
F1 category
Jul 12, 1987
2:12 PM EDT
Tornado report for ZIP 20166
Loudoun County · 74,711 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, VA
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 in and near ZIP 20166 on the Interactive Map

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NWS Storm Reports & Census Data

U.S. Census Data · ZIP Code

ZIP 20166 area census snapshot

People & households
Population13,854
Households5,214
Housing units5,300
Income
Median household income$135,246
$100k+ households51.8%
$150k+ households27.6%
Housing stock
Single-family detached669
Attached single-family2,358
Small multifamily544
Large multifamily1,729
Mobile homes0
Housing mix
Single-family share12.6%
Attached-home share44.5%
Multifamily share42.9%
Mobile-home share--
Ownership & occupancy
Owner-occupied2,698
Renter-occupied2,516
Vacant units86
Home value & age
Median home value$576,400
Owner homes $300k+93.0%
Owner homes $500k+63.3%
Owner homes $750k+19.8%
Median year built2005
Older-home share3.6%
Vehicle context
Households with cars5,088
Free hail maps

This snapshot is for local area context only and describes the selected state, county, city, or ZIP area — not a specific home or property. For ZIP-level estimated hail impact, use Free Hail Maps to generate a hail report with key impact details for that ZIP.

Frequently asked questions

for homeowners, buyers & sellers
How many hail, wind, and tornado reports does ZIP 20166 have on record?

Our records show 17 hail, 55 wind, and 2 tornado reports in and near ZIP 20166, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 4, 2026.

What is the largest hail ever reported in ZIP 20166?

The largest hail size in these storm-report records in and near ZIP 20166 is 2.75″. It was reported near Sterling, VA on May 2, 2002.

A storm report showed up near my home in ZIP 20166 — does that mean my roof is damaged?

Not necessarily. A storm report only means hail, wind, or a tornado was observed nearby; it does not confirm damage at any specific address, and conditions change from block to block. Check an address-level hail report first, and if it looks significant, find a local pro that serves ZIP 20166 and ask about a Remote Hail Inspection before anyone climbs on the roof.

I am buying a home in ZIP 20166 — why should I look at its storm history?

Recent hail or wind can leave a roof or exterior with damage that is easy to miss during a walkthrough, and a recent roof replacement is sometimes an insurance job after a storm. Reviewing the storm history for a ZIP 20166 address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.

I am selling a home in ZIP 20166 — how does this help me?

Knowing the storm history for your address lets you answer buyer questions with confidence, document repairs you have already made, and decide whether a pre-listing roof check is worthwhile. A clear hail history removes a common sticking point during negotiations.

How do I check hail history for a specific ZIP 20166 address?

Use the address search to pull a free address-level hail report for any property in ZIP 20166 — 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 in and around ZIP 20166, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported in ZIP 20166, 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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