Storm reports for October 21, 2021

IndependentNot affiliated with NOAA or the National Weather Service. Source: NOAA Storm Prediction Center storm reports; NOAA MRMS radar hail estimates (MESH) via the Iowa Environmental Mesonet; 2020 Census housing units. Data through November 6, 2026. Methodology

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Other storms on October 21 →

On October 21, 2021, 0 hail, 11 damaging-wind and 19 tornado reports were logged across 4 states. Radar estimated hail of 1 inch or larger over 214 square miles containing about 1,700 homes.

Storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Colored areas are NOAA MRMS radar estimates of the largest hail (MESH) over the day, lower 48 states only; radar overestimates and underestimates size, so read it with the ground reports.

Storm reports by state

Cities with the largest radar-estimated hail

Counties by homes inside 1″+ radar-estimated hail

Homes are 2020 Census housing units and people are 2020 Census residents, counted by block group where its center of population lies under radar-estimated hail of 1 inch or larger.

Damage, injuries and deaths

National Weather Service offices recorded about $9.1 million in property damage and $100,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (31 events in 4 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Washington County, PA (near Independence) · Tornado EF2 · $7.5 million
  “A NWS damage survey confirmed that an EF-2 tornado, with winds|peaking near 130 MPH, tracked through western Washington County|on the evening of October 21, 2021. The length was over 15 miles|long and the width varies in some areas but the maximum was between 600 |to 700 yards.”
• Belmont County, OH (near Lamira) · Tornado EF1 · $525,000
  “The National Weather Service surveyed three touch down points in|Belmont county. The first was in the small town of Loomis where|several hardwood trees had large branches down and a tree was|uprooted.”
• Allegheny County, PA (near Allison Park) · Tornado EF1 · $500,000
  “A damage survey confirmed that a tornado tracked across the|southern portion of Hampton Township, PA. This tornado was|associated with the same circulation that initially produced a|brief tornado earlier in Mount Nebo.”
• Washington County, PA (near Thomas) · Tornado EF1 · $325,000
  “A NWS damage survey confirmed that an EF-1 tornado, with winds|speeds ranging between 90 to 95 MPH, tracked through portions of|Peters Township in Washington County on the evening of October|21, 2021. The length was 1.5 miles and the width in some areas|was about 100 to 200 yards.”
• Jefferson County, OH (near Emerson) · Tornado EF1 · $150,000
  “The National Weather Service conducted a survey off Township Road|102 just southwest of Mt. Pleasant, Ohio. The damage was confined|to hardwood and softwood trees. They were either snapped at the |trunk, missing large branches, or uprooted. There was a 100 year |old oak tree that was uprooted.”
• Allegheny County, PA (near Emsworth) · Tornado EF0 · $50,000
  “A damage survey confirmed that a brief tornado occurred in and|near the Mount Nebo Pointe shopping center. Damage at the Target|store included broken glass in the entry doors (which were sucked|outward by the wind), as well as damage to a sign on the west-|facing side of the store.”

Event narratives from NWS Storm Data, shortened. Up to six per day, chosen by deaths, injuries, damage and size.

Source: NOAA National Centers for Environmental Information (NCEI), Storm Events Database, as entered by National Weather Service offices; data through July 31, 2026. Damage is in dollars of the year, not adjusted for inflation.

Guides: What radar-estimated hail (MESH) is and isn't · Storm reports: preliminary vs final