SwathIQ / Hail map

Free Interactive Hail Map -- No Login

Pick a storm date, see the NOAA radar swath and hail reports, and click anywhere to check the hail history at that exact spot. No signup.

Storm date

Colored swath = NOAA MRMS radar-estimated hail size; dots = NOAA SPC reports. Radar-indicated, not a guarantee of damage.

Turn the map into a route.

An approved SwathIQ account is free and unlocks the full app: door-knock address lists for every hailed address inside your markets, CSV exports, and text alerts when hail hits your territory. Access is hand-reviewed -- you'll get your invite within 24-48h.

Get free access Check an address

How to use the hail map

Choose a storm date from the menu -- it lists recent U.S. hail days, biggest first. The colored swath is NOAA's MRMS radar estimate of the largest hail in each ~1 km cell; the dots are individual SPC storm reports. Click any spot to see how many times hail has been reported there and the largest size. For a specific home, use the hail history by address lookup.

What the hail colors mean

Color	Hail size	Roof impact
Yellow	~0.75″-1″	Granule loss / bruising possible.
Orange	~1″-1.5″	Functional damage likely.
Red	~1.5″-2″	Widespread damage; strong claim territory.
Purple	2″+	Severe -- full replacements common.

Why a free hail map?

Most hail maps make you sign up or pay before you can even see where it hailed. SwathIQ shows the map free because the value for a roofing or restoration team is in the action -- the door-knock list, the route, the branded report -- which an approved (free) account unlocks for your markets. See how SwathIQ compares to HailTrace and other tools.

Hail maps by state

Jump to a curated state hub with local hail history and county breakdowns: Texas · Oklahoma · Kansas · Colorado · Nebraska · Missouri · Minnesota · Iowa · Illinois · South Dakota · North Dakota · Arkansas · New Mexico · Wyoming · North Carolina · Georgia.

Embed this hail map on your site

Add the live SwathIQ hail map to your own roofing site with one line -- free. It updates itself as new storms come in.

<iframe src="https://swathiq.ccdocs.com/embed/hail-map" width="100%" height="480"
        style="border:1px solid #1c2530;border-radius:12px" loading="lazy"
        title="SwathIQ hail map"></iframe>

Scope it to one state by adding ?state=TX to the URL. Get alerts when hail hits with free hail alerts.

FAQ

Is the hail map free?

Yes, no login. An approved (free) account adds door-knock address lists for your markets, CSV exports, and alert zones. Access is hand-reviewed -- you'll get your invite within 24-48h.

What do the colors mean?

The swath is NOAA MRMS radar-estimated hail size (yellow ~1″, red 1.5-2″, purple 2″+); the dots are NOAA storm reports.

How far back does it go?

Storm reports to 2010, with radar swaths for recent storms. Pick a date above the map.

Data & method: NOAA MRMS MESH radar + NOAA/NWS SPC storm reports. Radar-indicated and observation-based -- informational only.