Union County, NJ Weather Alerts
Every National Weather Service alert issued for Union County, New Jersey, pushed to your phone within moments — county code NJC039, forecast zone 3 zones (NJZ107, NJZ108, NJZ010). Free with StormCast.
Download on Google PlayHow the NWS identifies Union County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches NJC039 directly rather than matching on place names, which is why an alert arrives whether you are in Berkeley Heights or anywhere else in the county.
NWS County Code
NJC039
Forecast Zones
3 zones (NJZ107, NJZ108, NJZ010)
Forecast Office
Upton (OKX)
Radar Station
KDIX
Towns covered in Union County
An NWS alert for Union County applies to all 21 of these communities. You do not need a separate alert for each one.
River gauges in and around Union County
StormCast tracks 6 gauges near Union County. Set a flood-stage alert on any of them to get notified before the water reaches you.
Current conditions
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Alert types issued for Union County
Tornado
Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.
How tornado alerts work →Flooding
Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.
How flood alerts work →Winter
Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.
Winter warnings explained →Fire Weather
Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.
Fire weather alerts →Heat & Cold
Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.
Frost & freeze alerts →Union County weather alert questions
Which NWS forecast zone is Union County in?
Union County, New Jersey is NWS county code NJC039 and spans 3 forecast zones (NJZ107, NJZ108, NJZ010). Alerts for it are issued by the Upton (OKX) Weather Forecast Office, and the nearest NEXRAD radar is KDIX.
Which towns in Union County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Union County covers every community inside it, including Berkeley Heights, Clark, Cranford, Elizabeth, Fanwood, Garwood, Hillside, Kenilworth, Linden, Mountainside, New Providence, Plainfield, Rahway, Roselle, Roselle Park, Scotch Plains, Springfield, Summit, Union, Vauxhall and Westfield.
Are there river gauges in Union County?
Yes — StormCast monitors 6 river gauges in and around Union County, including Rahway River at Springfield, Green Brook at Seeley Mills, Rahway River at Rahway. You can set a flood-stage alert on any of them and get a push notification when the water rises.
How fast are alerts for Union County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for NJC039, the push notification goes out within moments — even with your screen off.