Hail and tornadoes in St. Louis County, MO
Since January 2021, radar estimated hail somewhere in St. Louis County, MO on 28 days. The biggest estimate: 2 in or larger (hen egg), on Sun, May 26, 2024. Hail was reported to the National Weather Service inside the county on 7 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 70 hail reports in St. Louis County, MO on 42 days, 7 of them 2 inches or larger. The largest: 4.5 in, near Tower Grove, on Wed, May 25, 2011.
By decade: 2000s: 19 · 2010s: 28 · 2020s: 23
Tornadoes since 1950
5 tornadoes have touched St. Louis County, MO since 1950, none of them rated F3/EF3 or stronger. They killed 4 and injured 40.
Every one
- Fri, May 16, 2025 · EF0 · 6.61 mi long, 1,750 yd wide · near Tower Grove · 4 deaths, 38 injuries
- Wed, Apr 10, 2013 · EF0 · 0.25 mi long, 50 yd wide · near Tower Grove
- Fri, Apr 22, 2011 · EF1 · 0.81 mi long, 500 yd wide · near Baden
- Fri, Dec 31, 2010 · EF1 · 2.71 mi long, 100 yd wide · near St Louis
- Sat, Mar 31, 2007 · EF0 · 1.71 mi long, 60 yd wide · near St Louis · 2 injuries
By decade: 2000s: 1 · 2010s: 3 · 2020s: 1
Still loading: NOAA's record goes back to 1950, and 2003 onward is in so far.
Every hail day since January 2021
- Tue, Oct 13, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sat, Jul 4, 2026
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Apr 27, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Apr 26, 2026
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (2 ENE Maplewood, MO)
- Sat, Aug 16, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Tue, Aug 12, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sun, Aug 10, 2025
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jul 6, 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: 1 in or larger (quarter)
No hail reported in the county.
- Fri, Mar 14, 2025
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1.5 in (2 E Maplewood, MO)
- 2 in (3 S Saint Louis, MO)
- Sun, May 26, 2024
Radar estimate anywhere in the county: 2 in or larger (hen egg)
Reported in the county- 2 in (2 NNE Lemay, MO)
- Thu, Apr 18, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Apr 1, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, Mar 14, 2024
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Wed, Mar 13, 2024
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Wed, Aug 2, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
No hail reported in the county.
- Sat, Jul 29, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Jul 17, 2023
Radar estimate anywhere in the county: 2 in or larger (hen egg)
No hail reported in the county.
- Fri, Jul 14, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (2 E Saint Louis, MO)
- Sat, Jul 1, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Fri, Jun 30, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Sun, Jun 4, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (2 E Maplewood, MO)
- Sat, May 13, 2023
Radar estimate anywhere in the county: 0.75 in or larger (penny)
Reported in the county- 1.25 in (3 E SHREWSBURY, MO)
- Sat, Apr 15, 2023
Radar estimate anywhere in the county: 1 in or larger (quarter)
Reported in the county- 1 in (3 E SHREWSBURY, MO)
- Sat, May 21, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Thu, May 19, 2022
Radar estimate anywhere in the county: 0.75 in or larger (penny)
No hail reported in the county.
- Mon, Aug 23, 2021
Radar estimate anywhere in the county: 1.5 in or larger (ping-pong ball)
No hail reported in the county.
- Tue, Aug 10, 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.