ATTENTION! Damaging hail detected. Hail tracking is now active for this region: Champaign, ILATTENTION! Damaging hail detected. Hail tracking is now active for this region: Champaign, IL
Hi folks! Stay ahead of the storm with a 48-hour severe weather outlook, precise hail alerts, and live hail tracking. Access hail insights, historical hail maps, and detailed reports across 300+ regions for better planning and fewer "uh-oh" moments. Stay informed, stay safe, and stay protected - all completely free. Hi folks! Stay ahead of the storm with a 48-hour severe weather outlook, precise hail alerts, and live hail tracking. Access hail insights, historical hail maps, and detailed reports across 300+ regions for better planning and fewer "uh-oh" moments. Stay informed, stay safe, and stay protected - all completely free.
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 ReportsCoverage ZIP 20166 · 1978–presentUpdated Daily · last Sep 4, 2026
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
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, VA
1.00″hail
Jun 26, 1978 6:20 PM CST
Hail report for ZIP 20166
Fairfax County · 195,366 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Not provided, 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.
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
67mph
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
66mph
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
61mph
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
70mph
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
66mph
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
UNKmph
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
75mph
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
75mph
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
59mph
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
61mph
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
59mph
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
58mph
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
UNKmph
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
66mph
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
UNKmph
May 23, 2019 7:15 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: NUMEROUS TREES AND BRANCHES DOWN IN THE SOUTH RIDING AND STONE RIDGE COMMUNITIES.
NWS Wind Report Location: 1 S Arcola, VA
UNKmph
Dec 21, 2018 9:23 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: TREE DOWN NEAR THE INTERSECTION OF PRENTICE DRIVE AND BRODERICK DRIVE.
NWS Wind Report Location: 2 W Sterling Park, VA
58mph
May 14, 2018 10:38 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: 1 NNE Dulles Internatio, VA
58mph
Feb 13, 2017 4:05 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: 1 NNE Dulles Internatio, VA
UNKmph
Jun 21, 2016 5:29 PM UTC
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: TREE DOWN ALONG STONE SPRINGS BLVD.
NWS Wind Report Location: Arcola, VA
64mph
Jun 18, 2015 3:50 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Measured at Dulles International Airport KIAD.
NWS Wind Report Location: .69 N Dulles Intl Arpt, VA
63mph
Sep 8, 2012 2:20 PM EST-5
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: 2.7 NW Dulles Intl Arpt, VA
71mph
Jun 29, 2012 9:23 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A wind gust of 71 mph was measured at Dulles International Airport.
NWS Wind Report Location: .69 N Dulles Intl Arpt, VA
70mph
Jun 29, 2012 9:22 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A small tree fell onto an unoccupied car in a driveway along Clear Spring Terrace.
NWS Wind Report Location: 2.9 N Sterling, VA
66mph
Jun 29, 2012 9:22 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A tree was snapped near the intersection of Broderick and Moran.
NWS Wind Report Location: .89 WSW Sterling, VA
66mph
Jun 29, 2012 9:22 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Small limbs were snapped on Broderick south of Waxpool.
NWS Wind Report Location: 1.12 WNW Sterling, VA
66mph
Jun 29, 2012 9:21 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Large limbs were down along Route 606.
NWS Wind Report Location: 2.11 WSW Sterling, VA
58mph
Jun 22, 2012 6:14 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A medium size branch was snapped off a tree along Old Ox Road.
NWS Wind Report Location: 2.07 WSW Sterling, VA
58mph
Jun 22, 2012 5:58 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Small to medium tree branches were blown down and broken.
NWS Wind Report Location: .17 E Arcola, VA
60mph
Jul 19, 2010 4:48 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A pine tree was uprooted just east of Thunder Road on the north side of Route 606.
NWS Wind Report Location: 2.56 S Ryan, VA
59mph
Jun 4, 2008 1:50 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: The automated observation at Dulles International Airport measured a wind gust of 59 MPH.
NWS Wind Report Location: .88 SW Dulles Intl Arpt, VA
61mph
Jun 13, 2007 3:23 PM EST-5
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: An Automated Observation at Washington Dulles International Airport reported a wind gust of 53 knots (61 MPH).
NWS Wind Report Location: SW Dulles Intl Arpt, VA
69mph
Jul 5, 2004 2:40 PM EST
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 Arpt, VA
70mph
Aug 27, 2003 5:55 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A downburst of wind estimated up to 70 MPH downed several trees and power lines in the Cascades area.
NWS Wind Report Location: Sterling, VA
63mph
Aug 26, 2003 3:30 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Trees were downed.
NWS Wind Report Location: Ashburn, VA
64mph
Aug 26, 2003 3:30 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Numerous trees and power lines were downed from Broad Run Farms to Countryside.
NWS Wind Report Location: Sterling, VA
63mph
Aug 26, 2003 10:17 AM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Numerous trees were downed.
NWS Wind Report Location: Sterling, VA
60mph
Jun 11, 2003 7:29 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A wind gust of 60 MPH was recorded.
NWS Wind Report Location: Sterling, VA
61mph
May 14, 2002 3:37 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A 61 MPH wind gust was recorded.
NWS Wind Report Location: Sterling, VA
UNKmph
Jun 22, 2001 5:30 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Power lines were downed onto Belmont Ridge Road.
NWS Wind Report Location: 4 W Ashburn, VA
UNKmph
Apr 9, 2001 7:55 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A tree was downed.
NWS Wind Report Location: Arcola, VA
58mph
Mar 13, 2001 9:30 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A wind gust of 58 MPH was recorded at the National Weather Service Forecast office near Dulles Airport.
NWS Wind Report Location: Dulles Intl Arpt, VA
66mph
Aug 9, 2000 4:15 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: A wind gust of 66 MPH was recorded on the north grounds of Dulles International Airport.
NWS Wind Report Location: 1 N Dulles Intl Arpt, VA
UNKmph
Sep 9, 1999 6:10 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Trees downed along Route 621 and 659
NWS Wind Report Location: Arcola, VA
63mph
Jul 18, 1999 5:09 PM EST
Wind report for ZIP 20166
Loudoun County · 74,711 Homes in County
Wind Report Description: Dulles Airport ASOS measured wind gust
NWS Wind Report Location: 4 SE Ashburn, VA
58mph
Jul 7, 1991 5:15 PM CST
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: Not provided, VA
UNKmph
Nov 16, 1989 4:15 AM CST
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: Not provided, VA
74mph
Jun 14, 1989 2:10 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
UNKmph
Jul 17, 1983 6:00 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
UNKmph
Aug 1, 1980 2:45 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
68mph
Aug 1, 1980 11:40 AM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
78mph
Jul 5, 1980 1:22 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
66mph
Jun 15, 1980 2:22 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
UNKmph
Jun 3, 1980 2:30 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, VA
69mph
Jun 26, 1978 6:20 PM CST
Wind report for ZIP 20166
Fairfax County · 195,366 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Not provided, 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
F2category
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
F1category
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
Report type
Hail
Wind
Tornado
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Address-level hail history. 100% free. No phone or email required.
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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