Hail and tornadoes in Montgomery County, MD
Since October 2020, radar estimated hail somewhere in Montgomery County, MD on 50 days. The biggest estimate: 3 in or larger (teacup), on Mon, Jul 15, 2024. Hail was reported to the National Weather Service inside the county on 8 days.
Still loading: radar estimates go back to Wed, Oct 14, 2020, and the earlier years are being added.
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.
Hail on record since 1955
NOAA's Storm Events database lists 156 hail reports in Montgomery County, MD on 72 days, 6 of them 2 inches or larger. The largest: 2.75 in, near Rockville, on Mon, May 2, 2016.
By decade: 1990s: 9 · 2000s: 67 · 2010s: 65 · 2020s: 15
Tornadoes since 1950
21 tornadoes have touched Montgomery County, MD since 1950, none of them rated F3/EF3 or stronger. They killed 0 and injured 5.
Strongest
- Wed, Jun 5, 2024 · EF1 · 8.83 mi long, 150 yd wide · near Poolesville
- Wed, Jun 5, 2024 · EF1 · 15.16 mi long, 150 yd wide · near Quince Orchard · 5 injuries
- Fri, Feb 7, 2020 · EF1 · 1.11 mi long, 150 yd wide · near Whites Ferry
- Fri, Sep 17, 2004 · F1 · 1 mi long, 200 yd wide · near Poolesville
- Wed, Nov 5, 2003 · F1 · 10 mi long, 75 yd wide · near Poolesville
Most recent
- Wed, Jun 5, 2024 · EF1 · 15.16 mi long, 150 yd wide · near Quince Orchard · 5 injuries
- Wed, Jun 5, 2024 · EF1 · 8.83 mi long, 150 yd wide · near Poolesville
- Sat, Apr 22, 2023 · EF0 · 0.44 mi long, 50 yd wide · near Poolesville
- Fri, May 27, 2022 · EF0 · 0.21 mi long, 125 yd wide · near Olney
- Fri, Feb 7, 2020 · EF0 · 2.08 mi long, 75 yd wide · near Dawsonville
- Fri, Feb 7, 2020 · EF1 · 1.11 mi long, 150 yd wide · near Whites Ferry
- Mon, Jun 19, 2017 · EF0 · 0.22 mi long, 100 yd wide · near Kemp Mill
- Thu, Jun 13, 2013 · EF0 · 20.1 mi long, 150 yd wide · near Seneca
- Fri, Jun 1, 2012 · EF0 · 0.47 mi long, 75 yd wide · near Cedar Grove
- Fri, Jun 1, 2012 · EF0 · 0.56 mi long, 50 yd wide · near Poolesville
By decade: 1990s: 3 · 2000s: 6 · 2010s: 6 · 2020s: 6
Still loading: NOAA's record goes back to 1950, and 1995 onward is in so far.
Every hail day since October 2020
- Fri, Aug 7, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jul 18, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 11, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 5, 2026
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Sat, Jul 4, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Dec 4, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 26, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Jun 18, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, May 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, May 3, 2025
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
Reported in the county- 1 in (3 SW Damascus, MD)
- Fri, Jan 17, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Sep 21, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Aug 29, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 1.5 in (2 SW Germantown, MD)
- 1.5 in (Boyds, MD)
- Sun, Aug 18, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 29, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 15, 2024
Radar estimate anywhere in the county: 3 in or larger (teacup)
No hail reported in the county.
- Mon, May 27, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Apr 15, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 ENE Dawsonville, MD)
- Tue, Sep 12, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Sep 8, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Sep 7, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (Kensington, MD)
- Sat, Jul 29, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Jul 28, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Thu, Jul 27, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Jul 14, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Jul 7, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Aug 5, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Aug 4, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Tue, Jul 12, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 2, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jun 13, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 2, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (4 SW POOLESVILLE, MD)
- Sun, May 22, 2022
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Dec 15, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Nov 9, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Thu, Nov 4, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Sep 27, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Wed, Sep 15, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Aug 27, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Aug 13, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Aug 11, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Aug 10, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Jul 28, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1 in (2 ENE GAITHERSBURG, MD)
- Mon, Jul 26, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Mon, Jul 19, 2021
Radar estimate anywhere in the county: 3 in or larger (teacup)
No hail reported in the county.
- Wed, Jul 7, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jul 1, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (1 W ASPEN HILL, MD)
- 1 in (2 SSW DAMASCUS, MD)
- Mon, Jun 14, 2021
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Jun 3, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 E GAITHERSBURG, MD)
- Wed, May 26, 2021
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
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.