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

Hail, Wind & Tornado Reports in and near Green Valley, MD

Public hail, wind, and tornado reports in and near Green Valley, MD from September 18, 1991 through September 2, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 21770 — search hail, wind and tornado public reports for any U.S. ZIP code

Hail Reports

Wind Reports

Tornado Reports

Max Hail Size

1.75″

Source NOAA SPC · NWS Local Storm Reports Coverage Green Valley, MD · 1991–present Updated Daily · last Sep 2, 2026

Latest NWS Hail Reports in and near Green Valley, MD

8 reports

Free hail report for your home →

1.00″ hail

Aug 12, 2017
10:10 PM UTC

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: 2 N Friendship, MD

1.25″ hail

Jul 3, 2014
2:42 PM EST-5

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: 1.67 ENE Kemptown, MD

1.00″ hail

May 22, 2014
2:59 PM EST-5

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: .42 SW Kemptown, MD

1.25″ hail

Jun 29, 2012
9:32 PM EST-5

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: Half dollar sized hail was reported.

NWS Hail Report Location: .96 N Fountain Mills, MD

1.75″ hail

Jun 29, 2012
9:20 PM EST-5

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: Golf ball sized hail was reported.

NWS Hail Report Location: 1.3 W Fountain Mills, MD

0.75″ hail

Aug 21, 2009
6:20 PM EST-5

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: Penny size hail was reported in Green Valley.

NWS Hail Report Location: .69 N Fountain Mills, MD

0.88″ hail

Jul 4, 2007
3:00 PM EST-5

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: A Trained Spotter measured nickel size hail near the Frederick and Montgomery County line between Clarksburg and Ijamsville.

NWS Hail Report Location: 4 SE Ijamsville, MD

1.75″ hail

Sep 18, 1991
3:00 PM CST

Hail report for Green Valley, MD

Frederick County · 64,079 Homes in County

Hail Report Description: No National Weather Service description provided.

NWS Hail Report Location: Not provided, MD

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.

Latest NWS Wind Reports in and near Green Valley, MD

30 reports

Free hail report + wind check →

UNK mph

Sep 2, 2026
5:21 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: Tree down along Browningsville Road. Time estimated via radar.

NWS Wind Report Location: 1 Sw Green Valley, MD

UNK mph

Sep 2, 2026
5:13 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: Tree down along Bartholows Road. Time estimated via radar.

NWS Wind Report Location: 1 Ne Green Valley, MD

UNK mph

Sep 2, 2026
5:08 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: A tree was down on wires along Green Valley Road and Fingerboard Road.

NWS Wind Report Location: 1 W Green Valley, MD

UNK mph

Sep 2, 2026
5:07 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: A tree was down on wires along Green Valley Road at Lawson Road.

NWS Wind Report Location: 1 Wsw Green Valley, MD

UNK mph

Jul 31, 2025
9:15 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: Several trees down around Monrovia.

NWS Wind Report Location: 1 W Green Valley, MD

UNK mph

Jul 1, 2025
7:12 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: Trees and large branches blew down on MD-80 Fingerboard Road at Chaucer Court/Tranquility Court.

NWS Wind Report Location: 1 W Green Valley, MD

UNK mph

Sep 9, 2023
8:01 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: Numerous trees blew down near Green Valley and Ijamsville. Trees blew down on MD-75 Green Valley Road at Prcies Distillery Road... and on MD-80 Fingerboard Road at Ed McClain Road.

NWS Wind Report Location: 4 SW Green Valley, MD

UNK mph

Jul 18, 2022
7:45 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: TREES BLEW DOWN ON WESTBOUND I-70 BETWEEN MILE MARKER 68.0 AND EXIT 62/MD-75 GREEN VALLEY ROAD.

NWS Wind Report Location: 1 SSW Mount Airy, MD

UNK mph

Jul 18, 2022
7:36 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: TREES BLEW DOWN ALONG I-70 BALTIMORE NATIONAL PIKE NEAR MILE MARKER 65.0.

NWS Wind Report Location: 2 NNE Green Valley, MD

UNK mph

Jul 18, 2022
7:30 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: TREES AND WIRES BLEW DOWN NEAR THE INTERSECTION OF PRICES DISTILLERY ROAD AND COOK BROTHERS ROAD.

NWS Wind Report Location: 3 WSW Green Valley, MD

UNK mph

Aug 10, 2021
9:42 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: A TREE BLEW DOWN ON MD-80 FINGERBOARD ROAD NEAR BARTHOLOWS ROAD.

NWS Wind Report Location: 1 ESE Green Valley, MD

UNK mph

Jun 10, 2020
11:57 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: TREE DOWN ON I-70 NEAR MILE MARKER 65.

NWS Wind Report Location: 2 NE Green Valley, MD

UNK mph

Feb 7, 2020
12:46 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: MULTIPLE DOWNED TREES NEAR LYNN BURKE RD AND MID COUNTY DR

NWS Wind Report Location: 1 N Green Valley, MD

UNK mph

Aug 19, 2019
1:14 AM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: MULTIPLE TREES UPROOTED AND SNAPPED... AND DAMAGE TO VINYL SIDING ON A FEW HOMES ON PENN SHOP RD. BETWEEN RIDGE RD. AND FINGERBOARD RD.

NWS Wind Report Location: 2 E Green Valley, MD

UNK mph

Jul 22, 2019
7:12 PM UTC

Wind report for Green Valley, MD

Frederick County · 64,079 Homes in County

Wind Report Description: TREE DOWN ON A HOUSE 1600 BLK S MAIN ST

NWS Wind Report Location: 1 SSW Mount Airy, MD

Showing 15 of 30

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 Green Valley, MD

1 reports

UNK category

Feb 7, 2020
12:44 PM UTC

Tornado report for Green Valley, MD

Frederick County · 64,079 Homes in County

Tornado Report Description: TORNADO CONFIRMED IN MONROVIA. SIGNIFICANT TREE DAMAGE WITH NEARLY COMPLETE DEFORESTATION ALONG SECTIONS OF THE PATH. SILOH AND MACHINE SHOP DESTROYED. PATH LENGTH 6.0 MILES. MAXIMUM PATH WIDTH 150 YARDS. ESTIMATED MAXIMUM WIND 105 MPH. MAXIMUM EF-SCALE RATING EF1. PRELIMINARY.

NWS Tornado Report Location: 2 W Green Valley, MD

Showing 1 of 1

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 Green Valley, MD on the Interactive Map

Report type

Hail

Wind

Tornado

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Browse ZIP Codes with NWS Storm Reports in Green Valley

21770 34

Green Valley, MD Hail, wind & tornado reports

21771 103

Green Valley, MD Hail, wind & tornado reports

20871 39

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NWS Storm Reports & Census Data

U.S. Census Data · City

Green Valley, MD area census snapshot

People & households

Population13,187

Households4,124

Housing units4,181

Income

Median household income$174,221

$100k+ households48.2%

$150k+ households34.2%

Housing stock

Single-family detached4,109

Attached single-family65

Small multifamily0

Large multifamily7

Mobile homes0

Housing mix

Single-family share98.3%

Attached-home share1.6%

Multifamily share0.2%

Mobile-home share--

Ownership & occupancy

Owner-occupied3,975

Renter-occupied149

Vacant units57

Home value & age

Median home value$579,100

Owner homes $300k+94.2%

Owner homes $500k+64.6%

Owner homes $750k+18.4%

Median year built1985

Older-home share41.5%

Vehicle context

Households with cars4,029

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 Green Valley have on record?

Our records show 8 hail, 32 wind, and 1 tornado reports in and near Green Valley, MD, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 2, 2026.

What is the largest hail ever reported in Green Valley?

The largest hail size in these storm-report records in and near Green Valley, MD is 1.75″. It was reported near Fountain Mills, MD on June 29, 2012.

A storm report showed up near my home in Green Valley — 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 Green Valley and ask about a Remote Hail Inspection before anyone climbs on the roof.

I am buying a home in Green Valley — 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 Green Valley address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.

I am selling a home in Green Valley — 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 Green Valley address?

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

Hail, Wind & Tornado Reports in and near Green Valley, MD

Latest NWS Hail Reports in and near Green Valley, MD

Latest NWS Wind Reports in and near Green Valley, MD

Latest NWS Tornado Reports in and near Green Valley, MD

NWS Hail, Wind and Tornado Reports in and near Green Valley, MD on the Interactive Map

Get a free hail report for your address

Browse ZIP Codes with NWS Storm Reports in Green Valley

NWS Storm Reports & Census Data

Green Valley, MD area census snapshot

Frequently asked questions

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