HailSignal
Sign in

For US roofing, solar, PDR & more

Track the hail.Plan your next move.

Know which hail areas deserve a closer look. Get location, estimated hail size and confidence by email and phone push — for the areas you choose.

Create account View the map

For businesses that are needed after hail or protect themselves from it. Email & web push.

HailSignal in 90 seconds
From the first signal to your alert.
HailSignal in action1:00
Short film · original voices, English subtitles

Who it’s for

One hail track. Many jobs.

HailSignal is for businesses that are needed after hail or protect themselves from it. Choose your field and see which settings fit.

Other fields, e.g. agriculture: alerts start at 0.8 in (20 mm) and the warning time is short – talk to us.

  1. Choose your working area.

    Set the areas you want to monitor in the contiguous US.

  2. Set your priorities.

    Choose the estimated hail size and confidence level that matter to your work.

  3. Review, then decide.

    Receive matching alerts. Check location, evidence and estimated track before you act.

Experiences

Voices from the field

Dent repair technicians on how HailSignal supports them on the road.

All voices from the field
Serdar Germany 0:45 Watch video

Serdar

HSH Hagelschadenhilfe

Dent repair
“Everywhere I went, I found hail straight away.”
Matteo Rossi Italy 0:20 Watch video

Matteo Rossi

Rossi PDR Hail Company

Dent repair
“Plan our work better and save valuable time.”
Joe USA 0:26 Watch video

Joe

Smith PDR Hail Company

Dent repair
“Knowing where hail hits makes all the difference.”

Original voices. Subtitles in your language.

Open video ↗

The data behind the analysis

Data sources for our analyses

Radar, weather models and supporting evidence from traceable sources. HailSignal analyses these data – each alert identifies its sources.

More data sources and their role

National weather services via MeteoAlarm

Warnings come from the respective national weather services. Their origin is retained with the evidence.

Radar sources under evaluation

These sources are used for observation and calibration. They do not currently generate customer alerts on their own.

Reference and geographic data

UCAR/ICECHIP provides ground references for separate comparisons. Maps, place names, time zones and warning boundaries use additional datasets; their attribution appears on the map and in the legal notice.

The providers supply source data. HailSignal produces the analyses and assessments.

Sources & usage information

Coverage

Your US working area. In view.

Radar coverage across the contiguous US. Local detection depends on radar coverage and available evidence. Check your working area before subscribing.

  • Live

    Contiguous United States

    The lower 48 states, plus nearby parts of southern Canada and northern Mexico within radar range. Alaska and Hawaii are not included.

  • Live

    Germany

    Nationwide via the German Weather Service’s hail flag, all year. Size as “hail possible” or “large hail possible”, without millimetres.

  • Live

    Switzerland & the Alps

    Within the Swiss radar network’s range, including nearby areas up to 150 km from a radar.

  • Evidence source

    Official warnings from 14 countries

    European hail warnings support alerts as independent evidence.

  • In development

    Over 20 countries under observation

    We collect data and calibrate. Customer alerts start only after validation.

Swiss hail radar: 1 April to 30 September. Outside this season, this source provides no current hail estimates. Germany (DWD) and the US radar feed are not affected.

All countries in detail

Here’s what you get

What matters. In one alert.

A practical view of a hail area: where, estimated size and evidence level. Use it to decide where to investigate next.

Sample alertEmail & push

Tuesday, 1 September

HailSignalnow

Hail near Plano, TX

Estimated up to 2.4 in (61 mm). The storm is moving towards Allen and McKinney.

Hail size
~2.4 in
Confidence
C2

Two sample views · Original map in German

Forecast storm track26 mph · Northeast

Where is the storm heading?

Location and direction at a glance.

Example

One alert. Your field.

Once you choose your field, every first alert and update includes a line on what matters for you.

What to check: Hoods, roofs and trunk lids of vehicles in the track; dealerships and large car parks first.

Illustrative US example, schematic route — not an actual storm report. Size and track are estimates. C2 does not confirm damage to roofs, vehicles or property.

How alerts are created

Understanding an alert

Confidence, made clear.

Estimated hail size and confidence are assessed separately. So you can put each alert into context.

How large is the hail?

Class 2
0.8–1.1 in

Dents on vehicles, damage to thin glass possible.

Class 3
1.2–1.7 in

Roof tiles and solar modules at risk.

Class 4
1.8 in and above

High damage potential.

How sure are we?

C1
Possible

An initial radar signal, not yet confirmed.

C2
Likely

Matching radar products or a second, independent piece of evidence.

C3
Very likely

With a ground observation; in Germany, two independent WarnWetter app reports.

C4
Confirmed

Four independent confirmations on site.

Large hail does not automatically mean high confidence. Downgrades are reported too.

How we check the evidence

One annual plan for your hail work

Stay informed. Choose your next move.

Create account
$339per year · billed annually

Excl. applicable taxes · business use · annual renewal

See the annual plan & terms