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Free Interactive Hail Map

Hail Map with Reports for Philadelphia, PA

View the free hail map with reports for Philadelphia, PA from April 21, 2021. This event is marked as Complete, with a Light storm impact level and a Low Event Inspection Score.

Free Interactive Hail Map Hail Report by ZIP

Low

Event Inspection Score

Light

Storm Impact

Complete

Event Status

Apr 21, 2021

Event Date

Map Preview

Hail Swath Map Preview

The Philadelphia, PA hail swath map preview was last reviewed on August 27, 2026 and shows mapped hail estimates up to 0.75". There are 4 public hail reports, 17 public wind reports, and 0 nearby tornado reports listed for the April 21, 2021 event.

Region: Philadelphia, PA

April 21, 2021

Open Interactive Map

Max Hail

0.75"

Mapped estimated hail size

Public Hail Reports

Largest report: 1.00"

Public Wind Reports

Reports near map area

Tornado Reports

Reports near map area

View the April 21, 2021 Philadelphia, PA hail event on the free interactive hail map, then check a free Hail Report by ZIP to see a more local hail signal for your area.

View Free Interactive Hail Map

Map Footprint

Impact Area and Population for the Philadelphia, PA Hail Map

The April 21, 2021 hail swath map for Philadelphia, PA covers approximately 63 square miles and includes an estimated 30,881 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 38 square miles. The highest estimated population exposure is in the < 0.50" hail band with 16,099 people.

Mapped Impact Area

63 sq mi

Largest band: < 0.50"

Population Inside Footprint

30,881

Highest population band: < 0.50"

Mapped Hail Band	Impact Area	Population
< 0.50"	38 sq mi	16,099
0.50-0.75"	20 sq mi	8,001
0.75-1.00"	5 sq mi	6,781

Get a free Hail Report by ZIP to see a more local hail signal and whether the April 21, 2021 Philadelphia, PA hail event may have reached your area.

Housing Impact

Housing Exposure Inside the Philadelphia, PA Hail Swath Map

Inside the April 21, 2021 hail swath map area for Philadelphia, PA, HailGeeks estimates 11,581 single-family homes, 1,193 townhomes, and 5,161 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the < 0.50" hail band, with 6,020 single-family homes.

Single-Family Homes

11,581

Largest band: < 0.50"

Townhomes

1,193

Largest band: 0.75-1.00"

Multifamily Properties

5,161

Largest band: 0.75-1.00"

Mapped Hail Band	Single-Family	Townhomes	Multifamily
< 0.50"	6,020	270	2,077
0.50-0.75"	3,120	87	808
0.75-1.00"	2,441	836	2,276

Use this table to review housing exposure by hail band for the April 21, 2021 Philadelphia, PA hail map. To check a specific property more closely, use a free Hail Report by Address.

Affected Counties

Counties Inside the Philadelphia, PA Hail Map

Hail from the April 21, 2021 storm was mapped across 3 counties in the Philadelphia, PA region. Cumberland County, NJ had the strongest mapped signal, peaking at 0.75" with roughly 10,757 single-family homes inside the swath.

Cumberland CountyNJ

11K homes in the hail path

Atlantic CountyNJ

0 homes in the hail path

Gloucester CountyNJ

0 homes in the hail path

Showing 9 of 3 counties

County pages group every mapped hail event in the area. For a closer look, drop to the city or ZIP level below, or run a free Hail Report by Address.

Affected Cities

Cities Inside the Philadelphia, PA Hail Map

Zooming in, the swath touched 2 cities near Philadelphia, PA. Millville, NJ had the strongest mapped signal at 0.50", with an estimated 5,608 single-family homes exposed.

MillvilleNJ

6K homes in the hail path

VinelandNJ

5K homes in the hail path

Showing 12 of 2 cities

City cards show where the April 21, 2021 Philadelphia, PA hail activity was mapped, but your ZIP can show a closer local signal. Get a free Hail Report by ZIP, and if the signal looks meaningful, ask a local pro about a Remote Hail Inspection to see whether an on-site roof or exterior review may be worth scheduling.

ZIP Codes

ZIP Codes Inside the Philadelphia, PA Hail Swath Map

At the ZIP level, the April 21, 2021 Philadelphia, PA hail map spans 3 ZIP codes. ZIP 08332 shows the strongest local signal, with mapped hail estimates up to 0.75" and an estimated single-family-home exposure of 5,905.

08332Millville, NJ

6K homes in the hail path

08361Vineland, NJ

3K homes in the hail path

08360Vineland, NJ

2K homes in the hail path

Showing 12 of 3 ZIP codes

Check your ZIP in seconds to see whether hail activity from the April 21, 2021 Philadelphia, PA event was mapped near your area.

Public Storm Reports

Public Hail, Wind, and Tornado Reports

Public storm report tables connected to the April 21, 2021 hail map for Philadelphia, PA currently list 4 public hail reports, 17 public wind reports, and 0 tornado reports.

Date & Time	Hail Size	City	State	Description
April 21, 2021 11:22 AM CT	1.00 in	1 S Boyertown	PA	No National Weather Service description provided.
April 21, 2021 12:20 PM CT	1.00 in	3 SE Church Hill	MD	No National Weather Service description provided.
April 21, 2021 1:22 PM CT	1.00 in	2 NW Berkeley Twp	NJ	AN MPING REPORT OF QUARTER SIZE HAIL. TIME ESTIMATED FROM RADAR.
April 21, 2021 1:23 PM CT	1.00 in	Millville	NJ	No National Weather Service description provided.

Date & Time	Wind Speed	City	State	Description
April 21, 2021 11:35 AM CT		1 SSW Allentown	PA	TREE DOWN ON WIRES NEAR LEHIGH PKWY. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:05 PM CT		Upper Black Eddy	PA	LARGE TREE DOWN.
April 21, 2021 12:10 PM CT		3 N Alexandria Twp	NJ	TREE DOWN ON WIRES ON RICK RD. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:20 PM CT		1 WSW Clinton	NJ	DOWNED TREE ON I-78 EASTBOUND RAMP TO EXIT 15. ONE LANE WAS CLOSED. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:40 PM CT		1 SSW Wyncote	PA	TREE LIMBS DOWN ON WIRES ON ROCK CREEK DR. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:45 PM CT		1 SE Flourtown	PA	TREE DOWN ON WIRES ON TYSON RD. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:48 PM CT		3 N Branchburg Twp	NJ	UTILITY POLE DOWN ON US-22 EASTBOUND WEST OF READINGTON RD. ALL LANES WERE CLOSED. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:55 PM CT		3 SSE Far Hills	NJ	A FEW MEDIUM SIZED TREE BRANCHES DOWN. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:58 PM CT		1 N Holmesburg	PA	POWER OUTAGE DUE TO SEVERE WEATHER NEAR HOLME CIRCLE. TIME ESTIMATED FROM RADAR.
April 21, 2021 1:41 PM CT		2 SE Leisure Village Ea	NJ	GARDEN SHED BLOWN OVER... SECTION OF VINYL FENCE BROUGHT DOWN... AND SHINGLES BLOWN OFF HOUSE. TIME ESTIMATED FROM RADAR. SOCIAL MEDIA.
April 21, 2021 2:00 PM CT		1 S Galloway Twp	NJ	TREES DOWN AT 6TH AVE AND RIDGEWOOD ST. EMERGENCY MANAGEMENT REPORT RELAYED BY BROADCAST MEDIA. TIME ESTIMATED FROM RADAR.
April 21, 2021 12:40 PM CT	59 mph	1 SSE South Philadelphi	PA	PENNDOT RWIS STATION AT I-95 AND GIRARD AVENUE.
April 21, 2021 1:10 PM CT	58 mph	Fortescue	NJ	FORTESCUE NJ WEATHERNET SITE.
April 21, 2021 1:54 PM CT	63 mph	Atlantic City Internati	NJ	ASOS STATION KACY ATLANTIC CITY GUSTED TO 63 MPH.
April 21, 2021 2:10 PM CT	61 mph	1 SW Beach Haven	NJ	PERSONAL WEATHER STATION KNJLONGB89.
April 21, 2021 2:12 PM CT	62 mph	5 SE Mystic Island	NJ	RUTGERS/ TUCKERTON MESONET GUST TO 62 MPH.
April 21, 2021 2:16 PM CT	62 mph	2 SW Beach Haven	NJ	CWOP SITE EW4321.

Date & Time	Rating	City	State	Description
No public tornado reports are available for this event.

Showing 4 public hail reports

This table includes only public storm reports connected to the April 21, 2021 Philadelphia, PA storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.

Related Hail Maps

Related Hail Maps in the Philadelphia, PA Region

We found 0 more hail maps with reports from the same Philadelphia, PA region as the April 21, 2021 event.

If none of these related Philadelphia, PA hail maps look close enough to your property, check a free Hail Report by Address. It reviews hail history for a specific location — not just the broader Philadelphia, PA region — so you can check whether hail activity may have reached your property.

Remote Hail Inspection

Local Hail Review Options Near Philadelphia, PA

Not sure whether the April 21, 2021 Philadelphia, PA hail map matters for your property? Start with a free Hail Report by Address to see whether hail activity was mapped for that property. If the property signal looks meaningful, you can choose a local pro serving the Philadelphia, PA region and ask about a Remote Hail Inspection before deciding whether an on-site roof or exterior review is worth scheduling.

Get a Free Hail Report by Address

Check a specific property to see whether hail activity from the April 21, 2021 Philadelphia, PA event — or another recent hail event — may have been mapped at that address.

A Participating Local Pro

Find a roof or exterior pro serving the Philadelphia, PA region who can help you understand what the property hail signal may mean.

Remote Hail Inspection

A participating local pro reviews property-level hail history remotely — not just the April 21, 2021 event — to help decide whether an on-site inspection may be worth scheduling.

A free Hail Report by Address and a Remote Hail Inspection can help you look beyond the April 21, 2021 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Philadelphia, PA region, but they can help you make a more informed next decision before anyone climbs on the roof.

FAQ

Frequently Asked Questions

Common questions about the April 21, 2021 Philadelphia, PA hail event.

How big was the hail in Philadelphia, PA on April 21, 2021?

Mapped hail estimates reached up to 0.75" in the Philadelphia, PA area on April 21, 2021.

How accurate is this Philadelphia, PA hail map?

This hail map is based on mapped hail estimates, with public storm report context shown where available. It helps show where stronger hail may have occurred during the April 21, 2021 storm event, but it does not confirm property damage at any one address.

What does the Event Inspection Score of Low mean?

For this Philadelphia, PA event, the Event Inspection Score is Low. The score reflects how strong the hail-history signal is and whether a closer roof or exterior review may make sense. A higher score means a stronger signal, not confirmed damage.

How many people were in the Philadelphia, PA hail area?

An estimated 30,881 people live inside the mapped hail footprint, which covers about 63 square miles. This is an estimate of residents inside the storm area, not a count of people who reported damage.

How many storm reports came from this event?

For the April 21, 2021 Philadelphia, PA event, public storm report tables currently list 4 hail reports, 17 wind reports, and 0 tornado reports. Public reports are point observations and are not available for every location.

Can I use this Philadelphia, PA hail map for my business or content?

Yes. This hail map is free to use and share for marketing, print, blogs, content, research, and similar uses as long as attribution is included with a link back to this page. Use the Share button on the map to copy a ready-made credit line. Use is also subject to our Terms of Use.

How often is this hail map updated?

This event map was generated shortly after the storm and was last reviewed on August 27, 2026. It may be updated as additional hail data or public storm reports become available.

My home is in the Philadelphia, PA area — what should I do?

If your address falls inside a mapped hail band from the April 21, 2021 storm event, check a free Hail Report by Address for an address-level first look. You can also ask a qualified local pro whether a closer roof or exterior review may make sense.