RoofTake

Historical hail archive: January 2016–December 2025. NOAA radar estimates within 25 miles of each city centre. ZIP matches use the first three digits; this is not a property-level report or a live alert service. Coverage and source.

Dallas County · Texas · NOAA radar record

The October 21, 2019 hailstorm — Dallas, TX

Radar estimated the largest stone at 4.00 in (10.2 cm), Grapefruit size. It was the 1st biggest hail day on record for Dallas since 2016. Radar detections fall within the hour range 01:00–07:00 UTC on this UTC calendar date. Local dates and times may differ.

4.00 inlargest stone estimated (10.2 cm)
185radar signatures
100%hail probability, 100% severe
1stbiggest day in Dallas

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Data last refreshed: · source: NOAA NCEI Severe Weather Data Inventory, nx3hail

What those numbers mean

A 4.00 in stone is roughly what people call Grapefruit size. At this size damage is usually obvious — fractured shingles, dented gutters and vents, and often the decking underneath.

A radar estimate, not a ground measurement.

MAXSIZE is the algorithm's estimate of the largest stone aloft in the storm cell. Hail melts and breaks up on the way down, so what lands is usually smaller. And the swath is narrow: a detection 3.19 miles from downtown says nothing about your street. What radar can and cannot prove.

If you own a roof in Dallas and this date means nothing to you, it is worth a look. Hail damage to asphalt shingles does not leak for years — and it looks different from what most people expect.

Where else it hailed that day

Radar also detected hail in 12 other areas on the same UTC date. These records do not establish that the areas shared one storm system.

AreaRadar max MetricSignatures
Fort Worth, TX3.25 in8.3 cm247
Oklahoma City, OK2.50 in6.3 cm184
Norman, OK2.50 in6.3 cm119
Tulsa, OK2.25 in5.7 cm226
Shreveport, LA2.00 in5.1 cm6
Fayetteville, AR1.75 in4.4 cm55
Austin, TX1.50 in3.8 cm5
Lawton, OK1.50 in3.8 cm22
Little Rock, AR1.50 in3.8 cm19
Springfield, MO1.25 in3.2 cm19
Topeka, KS0.75 in1.9 cm2
Kansas City, MO0.50 in1.3 cm3

What Dallas took either side of it

Before

  1. October 11, 2019
    3.75 in (9.5 cm) — Teacup size, radar-estimated
    101 radar signatures · closest signature 2.09 mi from the centroid · hail probability 100%, severe 100%
  2. August 30, 2019
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    1 radar signature · closest signature 16.91 mi from the centroid · hail probability 100%, severe 40%
  3. July 11, 2019
    1.75 in (4.4 cm) — Golf ball size, radar-estimated
    18 radar signatures · closest signature 15.49 mi from the centroid · hail probability 100%, severe 70%
  4. July 10, 2019
    1.00 in (2.5 cm) — Quarter size, radar-estimated
    14 radar signatures · closest signature 14.56 mi from the centroid · hail probability 100%, severe 40%
  5. July 7, 2019
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    3 radar signatures · closest signature 7.84 mi from the centroid · hail probability 100%, severe 50%

Since

  1. November 29, 2019
    0.50 in (1.3 cm) — Marble size, radar-estimated
    3 radar signatures · closest signature 16.37 mi from the centroid · hail probability 100%, severe 10%
  2. November 30, 2019
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    24 radar signatures · closest signature 16.86 mi from the centroid · hail probability 100%, severe 80%
  3. January 11, 2020
    1.25 in (3.2 cm) — Half dollar size, radar-estimated
    19 radar signatures · closest signature 9.94 mi from the centroid · hail probability 100%, severe 90%
  4. January 28, 2020
    0.50 in (1.3 cm) — Marble size, radar-estimated
    1 radar signature · closest signature 20.23 mi from the centroid · hail probability 100%, severe 20%
  5. March 19, 2020
    2.00 in (5.1 cm) — Hen egg size, radar-estimated
    21 radar signatures · closest signature 6.9 mi from the centroid · hail probability 100%, severe 90%

The full Dallas record — RoofTake Score 83

Were you there?

Photographs and first-hand reports of a specific storm are the one thing about this date that exists nowhere else. Add yours on your city's page — no name, no email, structured fields only.

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Common questions

Did hail hit my house on October 21, 2019?

This page tells you only that radar detected hail within 25 miles of downtown Dallas. Hail swaths are narrow and sharply bounded — one street can be wrecked and the next untouched. Check your ZIP on the home page, then go and look at the roof.

How big was the hail?

The algorithm estimated the largest stone in the storm cell at 4.00 in (10.2 cm) — Grapefruit size. That is an estimate of what was aloft, not a measurement of what landed. Ground truth is usually smaller.

Can I use this page for an insurance claim?

You can use it as evidence of a date of loss — the source is NOAA's public database and we cite it. It does not prove damage to your roof; only an inspection does that. Our claim letter generator drops this citation into your notice of claim for you.

Why have I never heard about this storm?

Most hail never makes the news. Radar sees far more of it than anybody reports, which is exactly why these pages exist.

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