Storm Events database
Definition
- Related pages
- 6
- Last revised
- 23 August 2026
The Storm Events database is the reviewed record of severe weather in the United States, kept by the National Centers for Environmental Information from the entries each forecast office prepares. An office checks the reports it received against each other and what it can verify afterward, discards what it cannot support, merges duplicates, and files each event with a type, a location, begin and end times, a magnitude where there is one, and a narrative. Entries are published monthly, between two and three months after the month ends, so a recent storm is absent from it for a season.
Its authority is the review, and the review is also its delay. A hail entry here was reviewed by a meteorologist with the whole day in view; the same event in a preliminary log was relayed within minutes. The two can disagree on size, on time and on whether the event happened at all; when they do, the reviewed entry is the one to cite and the preliminary one records what was known at the time. Some events are filed against a county or zone rather than a point, and such an entry did not happen at any one address.
In this archive an entry filed against a county is labelled so it is never read as a measurement at a place. A day carried by the reviewed record and a preliminary log counts as carried by two independent sources, and the product says when a recent day is still inside the window the reviewed record is written in.
In the report
How the document prints it
In the report a reviewed entry is a row in the record table with its date, its type, its measurement, its distance and bearing from the address and its source, marked as measured; an entry filed against a county rather than a point carries a label saying so beside its type, and its distance is not printed as if it had one. The citation under Sources and method describes the database, states that it is the finalised federal record, and gives the radius and county scope it was searched at. Where the record is incomplete for the window, the summary carries a caveat saying how complete it is, and the document never fills the gap with an inference.
From the record
23 Aug 2026
A day the reviewed record is still being written for
- Reports on the day so far
- 177
- Shortest revision window
- 7 days
- Longest revision window
- 540 days
- Settles by
- 14 February 2028
23 August 2026 carries 177 reports so far, and at least one national source is still revising it: the longest revision window among the sources is 540 days, so the day is provisional until 14 February 2028 and its page says so.
Measured Detected, not measured
The page these figures come fromRelated
The terms this page uses and the guides that go further. Each is shown against its own example from the record.
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Term
Local storm report
A report of severe weather at a place and a time, relayed by a National Weather Service office as it comes in and before it is reviewed.
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Term
SPC storm report
A preliminary hail, wind or tornado report collected nationally by the Storm Prediction Center from forecast offices on the day it was filed.
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Term
Storm survey
A ground or aerial examination of storm damage by a National Weather Service team, made to fix a tornado's path, width and rating after the event.
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Term
Date of loss
The calendar date a claim says the damage occurred, which the storm record either holds a report for or does not.
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Guide
How a date of loss is established, and how it is contested
A date of loss is a claim about one calendar day. Most courts have read it as the day the storm fell rather than the day the damage was found, and a policy answers only for days inside its term, so the date is tested before anything else is. This guide states how the date is set, how a carrier checks it, where it is most often wrong, and what a record has to show for the date to hold.
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Guide
NOAA's Storm Events database, explained
The Storm Events database is the reviewed record of severe weather in the United States, kept by the National Centers for Environmental Information from the entries each forecast office prepares under a written directive. This guide states what is in it, how a hail entry is made, why it arrives a season after the storm and can change after that, what it does not hold, and how to read it beside the preliminary log and the local storm report an entry began as.
Sources
The primary references. Each opens on the agency's own site.
The glossary defines the word. The report is what uses it.
Everything above is definition: what the word means in the document, and what it does not. None of it says what reached one roof.
Run the address and the archive is searched at the property: the storm, the date, the measured size, the distance and bearing from the roof, and the federal record each figure came from, in a document that states its own method. About a minute.
How this page is made
- The text
- Written by the editors and last revised 23 August 2026. It explains the record and how the report reads it; it contains no figure of its own.
- The example
- Drawn from the archive when the page was compiled, 24 August 2026, and rebuilt daily as the record deepens. Every figure in the panel marked From the record is computed, not written, and links to the page it came from.
- Measured and detected
- A report from a person or an instrument is measured. A radar-derived size is detected, not measured, and is marked as such, here and in every document we issue. The two are never added together.
- What this is not
- A definition of a word the report uses. It is not a report on any property, and it states no opinion about one. The coverage page states what the record holds, by kind and by year.
About this record
Everything here is reproduced from public federal and volunteer weather records, as the agencies and observer networks that publish them released it. Titan Weather compiles the record; it does not observe the weather, and it is not affiliated with any source it cites.
No archive holds everything. Storms cross places where nobody is standing, instruments and spotters cover some areas better than others, sources revise their records, and recent reports can take weeks to arrive and settle. Where this page shows nothing, nothing was found in the sources searched, within the period and area it states. That is not a finding that no weather occurred.
These pages describe the public record near a place or on a date. They do not establish what reached any particular property, and nothing here is insurance, legal or engineering advice.