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Storm Activity›New Jersey Storm Activity›Union County, NJ
New Jersey · Official NOAA Storm Data

Union County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Nov 1, 2026

Looking for storm and wind reports in Union County, New Jersey? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records show 60 severe weather events in the last 12 months — 44 high-wind reports with gusts up to 71 mph, plus 16 hail reports with hail up to 0.25". The most recent recorded storm activity was on Sep 26, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.

Map of Union County, New Jersey showing the county boundary and surrounding cities
Union County, New Jersey. Map © Mapbox © OpenStreetMap · County boundary: US Census Bureau.

Union County hail map

Where hail and high-wind reports clustered across Union County over the last 12 months. Heat shows report density and significance, not radar.

60
Events (12 mo)
16
Hail
44
Wind
0
Tornado
0.25"
Max hail
71
Max wind (mph)
Sep 26, 2026
Most recent

What the radar showed

Radar snapshot during the Mar 17, 2026 wind event near Newark Airport, Union County, New Jersey, with NWS warning polygons
NEXRAD radar at the moment of the Mar 17, 2026 wind event (71 mph) near Newark Airport. Outlined polygons are the storm-based warnings exactly as issued by the National Weather Service. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Storm exposure for an address in Union County

Get a free report in your folder. A city is enough if you do not have a street.

Storm log — the official record, day by day

Events older than 30 days, as recorded by the National Weather Service and Storm Prediction Center. Excerpts are quoted directly from official warnings and verified reports.

Saturday, September 26, 2026

2 NWS warnings — wind gusts up to 50 mph

“WHAT...North winds 20 to 30 mph with gusts up to 50 mph. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...Until noon EDT Sunday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

“WHAT...North winds 20 to 30 mph with gusts up to 50 mph. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...Until noon EDT Sunday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

Friday, September 25, 2026

2 NWS warnings — wind gusts up to 55 mph

“WHAT...North winds 20 to 25 mph with gusts up to 55 mph expected. WHERE...Portions of southern Connecticut and southeast New York. WHEN...From 2 PM Friday to 6 AM EDT Sunday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

“WHAT...North winds 20 to 25 mph with gusts up to 55 mph expected. WHERE...Portions of southern Connecticut and southeast New York. WHEN...From 2 PM Friday to 6 AM EDT Sunday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

Tuesday, September 1, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Tuesday, September 1, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 558 PM EDT, Doppler radar was tracking a strong thunderstorm over Newark, moving southeast at 25 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Union County

Thursday, August 27, 2026

8 NWS warnings — hail up to 0.25"

NEXRAD radar during the Thursday, August 27, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 357 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms over Bayonne, moving northeast at 20 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

“At 357 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms over Bayonne, moving northeast at 20 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

Thursday, August 20, 2026

2 NWS warnings — wind gusts up to 50 mph

NEXRAD radar during the Thursday, August 20, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 452 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near West Milford to Belle Mead. Movement was east at 40 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Union County

“At 452 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near West Milford to Belle Mead. Movement was east at 40 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Union County

Friday, August 7, 2026

1 SPC verified storm report

Tuesday, July 28, 2026

2 SPC verified storm reports · 2 NWS warnings — hail up to 0.25"

“At 316 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms over Florham Park, or near Millburn, moving northeast at 45 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

“At 316 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms over Florham Park, or near Millburn, moving northeast at 45 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

Monday, July 27, 2026

2 NWS warnings — hail up to 0.25"

“At 527 PM EDT, Doppler radar was tracking a strong thunderstorm over Clark, or near Plainfield, moving northeast at 20 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

“At 527 PM EDT, Doppler radar was tracking a strong thunderstorm over Clark, or near Plainfield, moving northeast at 20 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

Saturday, July 18, 2026

2 NWS warnings — hail up to 0.25"

“At 1118 AM EDT, Doppler radar was tracking a strong thunderstorm over Clark, or near Linden, moving east at 25 mph. Hazard: Pea size hail. Impact: Minor hail damage to sensitive outdoor objects is possible. This strong thunderstorm will be near... Elizabeth and Linden around 1125 AM EDT. Port Richmond around 1130 AM EDT. Bayonne around 1135 AM EDT. Tompkinsville around 1140 AM EDT.”

NWS severe weather mention · Union County

“At 1118 AM EDT, Doppler radar was tracking a strong thunderstorm over Clark, or near Linden, moving east at 25 mph. Hazard: Pea size hail. Impact: Minor hail damage to sensitive outdoor objects is possible. This strong thunderstorm will be near... Elizabeth and Linden around 1125 AM EDT. Port Richmond around 1130 AM EDT. Bayonne around 1135 AM EDT. Tompkinsville around 1140 AM EDT.”

NWS severe weather mention · Union County

Friday, July 3, 2026

5 SPC verified storm reports — wind gusts up to 71 mph

NEXRAD radar during the Friday, July 3, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“ASOS station KEWR Newark Liberty Airport. (OKX)”

SPC verified report · Newark Airport

“Numerous reports of trees down on homes and cars in Westfield NJ. Several reports of trees blocking roads and wires down. Some reports come near Springfield Ave and Mou (OKX)”

SPC verified report · 2 ESE Mountainside

Thursday, June 11, 2026

1 SPC verified storm report

“Large tree branch down on Willow Way in Berkeley Heights. (OKX)”

SPC verified report · 1 W Berkeley Heights

Sunday, June 7, 2026

2 NWS warnings — hail up to 0.25"

“At 137 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from Union to near Edison. Movement was southeast at 25 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

“At 137 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from Union to near Edison. Movement was southeast at 25 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Union County

Saturday, June 6, 2026

3 SPC verified storm reports — wind gusts up to 58 mph

NEXRAD radar during the Saturday, June 6, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Tuesday, March 17, 2026

1 SPC verified storm report · 2 NWS warnings — wind gusts up to 71 mph

NEXRAD radar during the Tuesday, March 17, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Corrects previous report from KEWR. ASOS station KEWR Newark Airport. (OKX)”

SPC verified report · Newark Airport

“WHAT...West winds 20 to 30 mph with gusts up to 50 mph. Wind gusts will gradually subside to 35 mph through the morning. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...Until 8 AM EDT this morning. IMPACTS...Gusty winds will blow around unsecured objects. A few additional tree limbs could be blown down.”

NWS severe weather mention · Union County

Monday, March 16, 2026

11 NWS warnings — wind gusts up to 60 mph

NEXRAD radar during the Monday, March 16, 2026 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“WHAT...South winds 20 to 35 mph with gusts up to 55 mph, shifting west late tonight. Isolated gusts to 60 mph possible. WHERE...In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, and Northern New London Counties. In New Jersey, Eastern Bergen, Eastern Essex, Eastern Union, and Hudson Counties. In New York, New York (Manhattan) and Richmond (Staten Island) Counties.”

NWS severe weather mention · Union County

“At 1055 PM EDT, Doppler radar was tracking a narrow line of showers with strong gusty winds along a line extending from east of Mount Pocono PA to near Pennsville in southern NJ. Individual cells within the line were moving northeast at 60 mph. Movement of the line was east at 40 mph. Hazard: Wind gusts of 50 to 55 mph.”

NWS severe weather mention · Union County

Sunday, March 15, 2026

1 NWS warning — wind gusts up to 55 mph

“WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected. Isolated gusts up to 55 mph. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...From 2 PM Monday to 4 AM EDT Tuesday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

Monday, February 23, 2026

4 NWS warnings — wind gusts up to 60 mph

“Bands of Heavy Snow Across the Area this Morning Several bands of very heavy snow will likely persist through mid- morning across the area with snowfall rates of 1 to 2 inches per hour, possibly locally higher. This combined with northerly wind gusts of 40 to 60 mph will produce blizzard conditions, making travel treacherous and potentially life-threatening.”

NWS severe weather mention · Union County

“Bands of Heavy Snow Across the Area this Morning Several bands of very heavy snow will likely persist through mid- morning across the area with snowfall rates of 1 to 2 inches per hour, possibly locally higher. This combined with northerly wind gusts of 40 to 60 mph will produce blizzard conditions, making travel treacherous and potentially life-threatening.”

NWS severe weather mention · Union County

Friday, December 19, 2025

1 SPC verified storm report · 2 NWS warnings — wind gusts up to 60 mph

NEXRAD radar during the Friday, December 19, 2025 storm activity in Union County, New Jersey
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“WHAT...West winds 15 to 25 mph with gusts up to 55 mph. Isolated wind gusts of 60 mph are possible through early this evening. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...Until midnight EST tonight. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

“WHAT...West winds 15 to 25 mph with gusts up to 55 mph. Isolated wind gusts of 60 mph are possible through early this evening. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...Until midnight EST tonight. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Union County

Thursday, November 6, 2025

3 NWS warnings — wind gusts up to 60 mph

“WHAT...For the Wind Advisory, northwest winds 15 to 25 mph with gusts 45 to 55 mph. Localized higher gusts up to 60 mph possible. For the Frost Advisory, temperatures as low as 32 will result in frost formation. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...For the Wind Advisory, until 8 AM EST this morning.”

NWS severe weather mention · Union County

“WHAT...For the Wind Advisory, northwest winds 15 to 25 mph with gusts 45 to 55 mph. Localized higher gusts up to 60 mph possible. For the Frost Advisory, temperatures as low as 32 will result in frost formation. WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. WHEN...For the Wind Advisory, until 8 AM EST this morning.”

NWS severe weather mention · Union County

Today's severe weather outlook

Storm Prediction Center Day 1 convective outlook — national severe weather risk map for today
Storm Prediction Center Day 1 convective outlook: categorical severe weather risk for today, updated several times daily. Source: NOAA/NWS Storm Prediction Center.

Common questions

When was the last severe storm in Union County, NJ?

The most recent recorded event was on Sep 26, 2026. Official NWS and SPC records show 60 severe weather events in Union County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.

Did it hail in Union County recently?

Yes — 16 hail reports in the last 12 months, with hail up to 0.25" recorded. The hail map above shows where reports clustered; the storm log lists each day.

How do I see hail history for a specific address in Union County?

Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property, including the most recent 30 days — county-level pages like this one only tell part of the story.

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Proudly AI-powered. Honestly sourced. IDOLCheck is built by HailyAI. Every storm event, magnitude, radar snapshot, and date on this page is deterministic — retrieved directly from official NOAA, National Weather Service (NWS), and Storm Prediction Center (SPC) storm records through HailyAPI and displayed exactly as reported. Quoted warning and report text is always attributed to its official source. Where the surrounding copy is not a direct quote, it was generated with AI assistance from that same verified storm data and reviewed and approved by humans before publication. AI organizes and presents the record — it never invents storm data.
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