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Recorded events

Hail and wind recorded near Brea

Hail is not common here, which is exactly why the days it has happened are worth writing down. Within ten miles of Brea, on two days: 19 March 2024 and 5 October 2021.

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The hail record

The most recent detection was on 19 March 2024, about 3 years ago. Radar sized the largest stone in that cell at about 0.5 inches, small, and unlikely on its own to have marked a sound roof. The nearest cell passed within about 1.8 miles of the centre of Brea.

Hail-bearing storm cells detected within 10 miles of Brea
DateLargest stone sized by radarNearest cellCells that day
19 March 20240.5 in1.8 mi7
5 October 20210.75 in6.6 mi5

Wind

Over 5 years of daily records at this location, the highest modelled gust was about 50 mph, below the 58 mph severe threshold but well into the range that finds anything already lifted or loose. There were 12 days above 39 mph and 3 above 45 mph in that period, concentrated in January, February, and November.

Highest modelled daily wind gusts at Brea
DatePeak gust
18 February 202641 mph
6 November 202444 mph
21 March 202340 mph
25 February 202346 mph
10 January 202341 mph
8 November 202245 mph
9 September 202241 mph
14 December 202150 mph

What to look at after a storm

What landed on it

A branch across the roof does damage twice: once on impact and once by sitting there holding water against the covering. Get it off, photograph where it was, and look at what is underneath before deciding it was nothing.

What the street is doing

If several roofs on the street are being worked on and yours is the same age and the same covering, that is a reason to have yours looked at. It is not a reason to assume you have damage, and a contractor who tells you the whole street is getting a new roof paid for by insurance is telling you something about themselves.

The ridge and the edges

Ridge caps sitting proud, a line of shingles along the rake that no longer lies flat, a lifted starter course at the eave: these are wind signatures, and each one is an opening for the next storm rather than a cosmetic complaint.

Granules where they should not be

Look in the splash blocks and at the base of the downspouts. Granule loss concentrated in one area, rather than spread evenly, is the pattern that points at impact rather than at age.

The soft metal, first

Start with the parts that bruise easily: gutter faces, downspouts, vent hoods, the aluminium trim. They are the network of soft targets around the roof, and they record a hail event more legibly than the shingles do. Clean metal is meaningful evidence.

Sources, and what they can and cannot tell you

Hail detections come from NOAA NCEI’s Severe Weather Data Inventory (NEXRAD product nx3hail) within 10 miles of Brea. Radar sizes hail in a storm cell; it does not observe what landed on any particular roof. Gust figures are daily maxima from the ERA5 reanalysis archive at this city’s coordinates, which is a model of the weather rather than a reading from an instrument in the neighbourhood. Both are useful for dates and for scale, and neither is evidence about your roof. Last refreshed 2026-08-31.

Storm damage questions

There was a storm near me. Do I have damage?

There is no way to know from the weather record, and this site does not claim otherwise. Two houses on one street come out of the same night in completely different condition. What a nearby storm gives you is a date and a reason to look — starting with the gutters and vent caps, which dent before shingles mark.

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