Storm reports for March 21, 2023

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 March 21 →

On March 21, 2023, 0 hail, 5 damaging-wind and 1 tornado reports were logged across 2 states. Radar estimated hail of 1 inch or larger over 3 square miles, none of it over homes counted in the 2020 Census.

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

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 $37,000 in property damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (6 events in 2 states). Injuries and deaths are those the events caused directly.

What the National Weather Service wrote

• Santa Barbara County, CA (near Carpinteria) · Tornado EF0 · 1 injury
  “A weak tornado developed in the community of Carpinteria. The EF0 tornado impacted the area near the intersection of Highway 192 and Cravens Lane. In a mobile home park, 26 homes were damaged. Also, several powerlines were blown down. One injury was reported.”
• Fresno County, CA (near Highway City) · Thunderstorm wind 46 mph · $25,000
  “Several reported trees and power lines were downed in Fresno during the early afternoon of March 21.”
• Yolo County, CA (near Woodland) · Thunderstorm wind 46 mph · $10,000
  “Strong straight-line winds downed multiple trees and utility poles near downtown Woodland. Sacramento International Airport reported a max gust of 46 mph. Time was estimated by radar.”
• San Diego County, CA (near Encinitas) · Thunderstorm wind 40 mph · $1,000
  “A large tree was downed near Weidners Garden.”
• San Diego County, CA (near Leucadia) · Thunderstorm wind 40 mph · $1,000
  “A large tree was downed, resulting in a power outage.”

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