Hail and tornadoes in Mercer County, NJ

Since January 2021, radar estimated hail somewhere in Mercer County, NJ on 16 days. The biggest estimate: 1 in or larger (quarter), on Sun, May 10, 2026. Hail was reported to the National Weather Service inside the county on 3 days.

Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.

Days with hail

since January 2021

1 inch or larger

days, estimated or reported

Largest radar estimate

1+ in

Sun, May 10, 2026

Largest reported

1.5 in

Sat, Apr 1, 2023

Radar estimates are NOAA's MESH: the largest hail the radar estimates aloft, on cells about 0.7 mile across, shown as the lower bound of a size band (“1.5+”). They often run larger than what reached the ground, and they aren't evidence of damage at any address.

Radar-estimated hail on Sun, May 10, 2026 around the place, with the hail reported that day — Sun, May 10, 2026: radar-estimated hail around Mercer County, NJ, with the hail reported that day.

Hail on record since 1955

NOAA's Storm Events database lists 43 hail reports in Mercer County, NJ on 24 days, 0 of them 2 inches or larger. The largest: 1.75 in, near Pennington, on Wed, Jul 23, 2008.

By decade: 2000s: 10 · 2010s: 15 · 2020s: 18

Tornadoes since 1950

10 tornadoes have touched Mercer County, NJ since 1950, none of them rated F3/EF3 or stronger.

Strongest

Tue, Feb 21, 2023 · EF2 · 5.8 mi long, 200 yd wide · near Lewisville
Thu, Jul 29, 2021 · EF2 · 6.03 mi long, 400 yd wide · near Titusville
Sat, Apr 1, 2023 · EF1 · 1.81 mi long, 300 yd wide · near North Crosswicks
Sat, Apr 1, 2023 · EF1 · 0.06 mi long, 300 yd wide · near North Crosswicks
Thu, Jul 29, 2021 · EF1 · 1.64 mi long, 100 yd wide · near Robbinsville Airport

Most recent

Fri, Jun 14, 2024 · EF0 · 0.13 mi long, 60 yd wide · near Slackwood
Sat, Apr 1, 2023 · EF1 · 1.81 mi long, 300 yd wide · near North Crosswicks
Sat, Apr 1, 2023 · EF1 · 0.06 mi long, 300 yd wide · near North Crosswicks
Tue, Feb 21, 2023 · EF2 · 5.8 mi long, 200 yd wide · near Lewisville
Wed, Sep 1, 2021 · EF0 · 2.61 mi long, 100 yd wide · near Clarksville
Thu, Jul 29, 2021 · EF1 · 1.64 mi long, 100 yd wide · near Robbinsville Airport
Thu, Jul 29, 2021 · EF2 · 6.03 mi long, 400 yd wide · near Titusville
Wed, Aug 7, 2019 · EF0 · 0.33 mi long, 25 yd wide · near Windsor
Sun, Aug 28, 2011 · EF0 · 0.6 mi long, 30 yd wide · near Hightstown
Tue, Sep 23, 2003 · F1 · 5 mi long, 100 yd wide · near Trenton

By decade: 2000s: 1 · 2010s: 2 · 2020s: 7

Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.

Every hail day since January 2021

Fri, Aug 7, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jul 27, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (1 NE Washington Crossin, NJ)
Fri, Jul 3, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sun, May 10, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Mon, Jun 30, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Thu, Jun 19, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Aug 6, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Fri, Jun 14, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Thu, Jul 13, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Tue, Jul 4, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Mon, Jun 26, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Apr 15, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Sat, Apr 1, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county
- 1 in (MERCERVILLE, NJ)
- 1.5 in (ALLENTOWN, NJ)
Tue, Feb 21, 2023
Reported in the county
- 1 in (PENNINGTON, NJ)
Thu, Jul 29, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
Tue, Jul 6, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
Wed, Jun 9, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.

Check your own address →Weather in Mercer County, NJ now →Get warned before the next storm →

Radar estimates and reports are for anywhere inside the county's boundary. Radar estimates come from NOAA's MRMS estimated hail size (MESH), the largest hail the radar estimates aloft on a ~1 km grid. They often run larger than the hail that reached the ground, and they aren't an observation at any address. Reports are what people reported to the National Weather Service. Neither is proof of damage or an official record for an insurance claim. From NOAA's Storm Events Database (NCEI), which records tornadoes from 1950, hail and thunderstorm wind from 1955, and every kind of storm from 1996. A tornado that crossed county lines is counted in each county it touched. Recent months are added as NCEI publishes them, a few months behind. Damage is in the dollars of its year and is often an estimate.