County Hazards

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Winter in Union County, New Jersey

32 winter storms and snow events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Winter Storm, Winter Weather, Heavy Snow, Blizzard, Ice Storm, Lake-Effect Snow, Sleet.

32 events · 0 deaths recorded · peak month February · county share of state 0.6%

Winter event locations in and around Union County. Boundaries: US Census Bureau.

NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.

Union County, New Jersey, has 32 winter events in the NCEI record since 1950, with at least one in 14 different years.

February is the busiest month, with 13 of the recorded events. The last 20 years account for 6 events against 26 in the 20 years before, a change that reflects reporting practice as much as weather.

The county holds 0.6% of the 5,132 winter events recorded in New Jersey; its 31.1 per 100 square miles compares with 69.8 statewide.

Some winter weather and high wind events are recorded by NWS forecast zone rather than by county; zone-recorded events whose zone is named for the county are included and marked "Forecast zone" in the table.

Compared with New Jersey

MeasureUnion CountyNew JerseyUS
Winter events since 1950325,132287,339
Per 100 square miles31.169.88.1
Per 10,000 residents0.65.58.7
Deaths recorded0482,509
Busiest monthFebruaryFebruaryJanuary

By year

195019882026
Winter events recorded in Union County per year, 1950 to 2026 (2026 is partial).

Seasonality

Jan
7
Feb
13
Mar
5
Apr
2
May
0
Jun
0
Jul
0
Aug
0
Sep
0
Oct
0
Nov
0
Dec
5
Winter events in Union County by month of occurrence, all years.

Recorded events

All 32 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.

DateEvent typeMagnitudeProperty damageCrop damageDeathsInjuriesGeography
25 Feb 2010Heavy Snow—————Forecast zone
9 Feb 2010Heavy Snow—————Forecast zone
19 Dec 2009Heavy Snow—————Forecast zone
1 Mar 2009Heavy Snow—————Forecast zone
22 Feb 2008Heavy Snow—————Forecast zone
13 Feb 2007Winter Storm—————Forecast zone
12 Feb 2006Heavy Snow—————Forecast zone
9 Dec 2005Heavy Snow—————Forecast zone
8 Mar 2005Winter Weather—————Forecast zone
1 Mar 2005Heavy Snow—————Forecast zone
25 Feb 2005Heavy Snow—————Forecast zone
21 Feb 2005Heavy Snow—————Forecast zone
22 Jan 2005Heavy Snow—————Forecast zone
28 Jan 2004Winter Storm—————Forecast zone
15 Jan 2004Heavy Snow—————Forecast zone
5 Dec 2003Heavy Snow—————Forecast zone
7 Apr 2003Heavy Snow—————Forecast zone
17 Feb 2003Heavy Snow—————Forecast zone
7 Feb 2003Heavy Snow—————Forecast zone
5 Dec 2002Heavy Snow—————Forecast zone
22 Feb 2001Heavy Snow—————Forecast zone
5 Feb 2001Heavy Snow—————Forecast zone
21 Jan 2001Winter Storm—————Forecast zone
30 Dec 2000Heavy Snow—————Forecast zone
25 Jan 2000Winter Storm—————Forecast zone
15 Mar 1999Heavy Snow—————Forecast zone
15 Jan 1999Winter Storm—————Forecast zone
1 Apr 1997Winter Storm—————Forecast zone
7 Mar 1996Winter Storm—————Forecast zone
16 Feb 1996Heavy Snow—————Forecast zone
3 Feb 1996Heavy Snow—————Forecast zone
7 Jan 1996Blizzard—————Forecast zone

Questions and answers

How many winter events has Union County had?

32 events in the NCEI Storm Events record between 1950 and 2026. Reporting of winter storms and snow became far more complete after 1996, so early decades undercount.

When was the last recorded winter event in Union County?

25 Feb 2010 (Heavy Snow). Records reach NCEI about 120 days after the month ends.

What was the most damaging winter event recorded in Union County?

NCEI records no damage estimate for events of this type in the county.

How does Union County compare with New Jersey for winter?

31.1 events per 100 square miles against 69.8 statewide; the county holds 32 of the state's 5,132 recorded events.

Provenance

NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Winter hub and the county page.