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

Hail, Wind & Tornado Reports in and near ZIP 17821

Public hail, wind, and tornado reports in and near ZIP 17821 from May 9, 1963 through September 1, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.

Example: 17821 — search hail, wind and tornado public reports for any U.S. ZIP code 
Hail Reports
17
Wind Reports
73
Tornado Reports
5
Max Hail Size
2.50″
Source  NOAA SPC · NWS Local Storm Reports Coverage  ZIP 17821 · 1963–present Updated  Daily · last Sep 1, 2026

Latest NWS Hail Reports in and near ZIP 17821

17 reports
Free hail report for your home →
1.75″ hail
May 22, 2014
2:13 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .52 E Danville, PA
1.75″ hail
May 22, 2014
2:01 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .52 E Mausdale, PA
1.00″ hail
May 22, 2014
1:57 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .87 SW Washingtonville, PA
1.00″ hail
May 22, 2014
1:50 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.09 NE Mansdale, PA
1.25″ hail
May 22, 2014
1:50 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.48 SSW New Columbia, PA
2.00″ hail
May 22, 2014
1:45 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.71 ESE Ridgeville, PA
2.50″ hail
May 22, 2014
1:45 PM EST-5
Hail report for ZIP 17821
Columbia County · 20,602 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.2 WSW Buckhorn, PA
1.75″ hail
May 22, 2014
1:40 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .87 SW Danville, PA
1.00″ hail
May 22, 2014
1:40 PM EST-5
Hail report for ZIP 17821
Columbia County · 20,602 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.32 NNW Grovania, PA
2.50″ hail
May 22, 2014
1:40 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .87 SW Ridgeville, PA
1.75″ hail
May 22, 2014
1:40 PM EST-5
Hail report for ZIP 17821
Columbia County · 20,602 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3.2 WSW Buckhorn, PA
1.75″ hail
May 22, 2014
1:30 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.71 WSW New Columbia, PA
1.25″ hail
May 22, 2014
1:27 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 2.2 WNW New Columbia, PA
1.75″ hail
Aug 7, 2008
4:05 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: Motorist on Interstate 80 reported large hail between mile markers 163 and 170.
NWS Hail Report Location: 1.56 W New Columbia, PA
1.00″ hail
Jun 10, 2008
4:05 PM EST-5
Hail report for ZIP 17821
Montour County · 5,373 Homes in County
Hail Report Description: Public reported quarter-sized hail in Danville.
NWS Hail Report Location: .87 SW Danville, PA
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 17821

73 reports
Free hail report + wind check →
UNK mph
Sep 1, 2026
10:01 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: Large tree and wires down in the vicinity of Mooresburg causing widespread power outages.
NWS Wind Report Location: 3 Nw Danville, PA
UNK mph
Sep 1, 2026
9:51 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: Multiple trees down across Danville.
NWS Wind Report Location: 0 Nw Danville, PA
UNK mph
Sep 1, 2026
9:50 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: Large tree down on the roadway near the intersection of West Market Street and Logan Street.
NWS Wind Report Location: 1 W Danville, PA
UNK mph
Jun 11, 2026
11:38 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: Multiple trees down in Riverside.
NWS Wind Report Location: 1 WSW Danville, PA
UNK mph
Jun 6, 2026
8:45 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: Numerous tree limbs down around Avenue F in Riverside... PA.
NWS Wind Report Location: 1 NE Riverside, PA
UNK mph
Sep 7, 2023
7:27 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: Spotter reports large amounts of tree debris across state route 54.
NWS Wind Report Location: 3 NNW Elysburg, PA
UNK mph
Aug 7, 2023
9:14 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: Report of trees down on wires.
NWS Wind Report Location: 1 NNW Elysburg, PA
UNK mph
Sep 15, 2021
7:45 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: TREES AND WIRES DOWN IN THE LIMESTONE AREA.
NWS Wind Report Location: 2 NW Mooresburg, PA
UNK mph
Aug 7, 2020
1:55 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: MULTIPLE TREES AND WIRES DOWN. REPORTED AT MOUNTOUR AND COLUMBIA COUNTY.
NWS Wind Report Location: 2 SSE Washingtonville, PA
UNK mph
Aug 7, 2020
1:30 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: MULTIPLE LARGE TREES DOWN ON AVE F.
NWS Wind Report Location: 1 ENE Riverside, PA
UNK mph
Aug 2, 2019
10:00 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: 2 TREES DOWN ALONG CONTINENTAL BLVD IN WASHINGTONVILLE
NWS Wind Report Location: Washingtonville, PA
UNK mph
Jul 6, 2019
9:37 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: TREES AND WIRES DOWN ON REED ROAD IN RUSH TOWNSHIP
NWS Wind Report Location: 1 NW Elysburg, PA
UNK mph
Jul 6, 2019
8:37 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: TREES AND WIRES DOWN ON REED ROAD IN RUSH TOWNSHIP
NWS Wind Report Location: 1 NW Elysburg, PA
UNK mph
Jul 2, 2019
8:50 PM UTC
Wind report for ZIP 17821
Northumberland County · 26,911 Homes in County
Wind Report Description: TREES DOWN.
NWS Wind Report Location: Riverside, PA
UNK mph
Jun 18, 2018
6:01 PM UTC
Wind report for ZIP 17821
Montour County · 5,373 Homes in County
Wind Report Description: TREES DOWN ALONG ROUTE 11 IN MAHONING TOWNSHIP.
NWS Wind Report Location: 1 E Danville, PA
Showing 15 of 73
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 17821

5 reports
UNK category
Jul 24, 2017
7:57 PM UTC
Tornado report for ZIP 17821
Northumberland County · 26,911 Homes in County
Tornado Report Description: BRIEF EF0 TOUCHED DOWN NEAR KLINES GROVE.
NWS Tornado Report Location: 1 NE Klines Grove, PA
EF1 category
Jun 30, 2015
7:03 PM EST-5
Tornado report for ZIP 17821
Northumberland County · 26,911 Homes in County
Tornado Report Description: An EF1 tornado was confirmed south of Riverside...with multiple trees down and damage to a small barn and a home. A shed was destroyed and a car was damaged by flying debris. Maximum estimated winds were 100 mph, classifying this as an EF1 tornado.
NWS Tornado Report Location: 1.93 SSW South Danville, PA
F0 category
Apr 1, 1998
12:40 PM EST
Tornado report for ZIP 17821
Montour County · 5,373 Homes in County
Tornado Report Description: A small tornado touched down just north of the intersection of Route 44 and Route 54, about 3 miles east of Turbotville in Anthony Township. Damage extended east along a 2 mile path, just noorth of Route 44. Several farms sustained damage to barns and farm equipment. Three small barns were destroyed. A house was unroofed and a barn lost part of its roof. Siding and sheet metal roofing came to rest in the tops of trees.
NWS Tornado Report Location: Ottawa, PA
F1 category
Apr 16, 1993
9:40 PM EST
Tornado report for ZIP 17821
Northumberland County · 26,911 Homes in County
Tornado Report Description: Three structures sustained damage and several large trees were downed. The first building affected was a barn. A section of the roof was ripped off and deposited on the downwind side. Part of the roof to the house on the property was peeled back. The next damage occurrence was about 300 yards down the road. A flat roof was completely lifted off a house. Some bricks from the second floor of the house were deposited on the lawn. A garage behind the house had half of the second floor almost totally ripped off the structure - with the other half almost untouched. A scattering of debris from the house and garage were found all over the yard and up to a few hundred yards downwind. Pieces of the debris, including insulation, were hung up in a few trees on the property.
NWS Tornado Report Location: Northumberland, PA
F1 category
Oct 3, 1979
6:00 AM CST
Tornado report for ZIP 17821
Montour County · 5,373 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, PA
Showing 5 of 5
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 17821 on the Interactive Map

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NWS Storm Reports & Census Data

U.S. Census Data · ZIP Code

ZIP 17821 area census snapshot

People & households
Population18,787
Households7,926
Housing units8,335
Income
Median household income$73,137
$100k+ households38.3%
$150k+ households15.0%
Housing stock
Single-family detached5,638
Attached single-family737
Small multifamily1,107
Large multifamily384
Mobile homes469
Housing mix
Single-family share67.6%
Attached-home share8.8%
Multifamily share17.9%
Mobile-home share5.6%
Ownership & occupancy
Owner-occupied5,366
Renter-occupied2,560
Vacant units409
Home value & age
Median home value$241,600
Owner homes $300k+35.8%
Owner homes $500k+13.2%
Owner homes $750k+4.2%
Median year built1975
Older-home share59.5%
Vehicle context
Households with cars7,123
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 17821 have on record?

Our records show 17 hail, 73 wind, and 5 tornado reports in and near ZIP 17821, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on September 1, 2026.

What is the largest hail ever reported in ZIP 17821?

The largest hail size in these storm-report records in and near ZIP 17821 is 2.50″. It was reported near Buckhorn, PA on May 22, 2014.

A storm report showed up near my home in ZIP 17821 — 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 17821 and ask about a Remote Hail Inspection before anyone climbs on the roof.

I am buying a home in ZIP 17821 — 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 17821 address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.

I am selling a home in ZIP 17821 — 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 17821 address?

Use the address search to pull a free address-level hail report for any property in ZIP 17821 — 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 17821, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported in ZIP 17821, 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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