← THOR Storm Mapper

Nationwide storm research for roofing teams

A Hail Map Built for Roofers Before and After the Storm

THOR combines nationwide NOAA/SPC reports, radar replay, hail swaths, Census-based Market Priority, property history, exports, alerts, and a built-in canvassing workflow in one $34/month subscription.

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What does a roofer get from THOR?

Open a recent storm, compare official point reports with radar and swath context, narrow the map by severity and area, review nearby property history, and move selected data into the rest of your team’s workflow. THOR is designed to shorten the time between hearing about a storm and deciding where a closer field inspection makes sense.

Straightforward price

$34/month

All 50 states, one account, no annual contract. Start with a 14-day trial and no credit card.

Real-Time Hail Maps

Know where the ice fell — within minutes of the storm.

  • All 50 states in one subscription
  • Report coordinates with county and ZIP context where available
  • Hail size, date, time, county, and source for every report
  • Filter by event type, severity, and date range (up to 2 years)

THOR Storm Mapper pulls severe-weather reports from the NOAA Storm Prediction Center (SPC) and renders them on a full-screen interactive map. Hail reports are color-coded by size and severity so a roofing team can move from a national scan to the dates and locations that deserve closer review.

Hail Swath Overlays

Review the radar-derived footprint around a reported storm.

  • Radar-derived hail paths from NEXRAD data
  • Radar-derived footprints tied to the selected storm window
  • Overlaid directly on the impact map alongside county boundaries
  • Useful for deciding which neighborhoods require closer inspection

Hail swaths are radar-derived estimates of where a hail-producing cell moved. THOR places those footprints beside official storm reports so you can examine the broader corridor rather than relying on one point report and decide where to inspect first.

Radar Overlay & Radar Replay

See the storm as it happened — in real time and on rewind.

  • NEXRAD radar overlay toggleable directly on the impact map
  • Full radar replay for any loaded time range
  • Adjustable opacity for layering radar over storm event markers
  • Compare live radar against historical hail reports in the same view

Most storm intelligence tools show you where damage was reported. THOR Storm Mapper shows you the storm itself. Toggle NEXRAD radar overlays directly on the map to correlate live precipitation with historical storm event data. The Radar Replay feature lets you scrub backward through time and watch any storm system move across the map frame by frame — critical for understanding which neighborhoods were under the heaviest cell and for how long.

Impact Zone Density Analytics

Bird's-eye view of where the most damage has accumulated.

  • State-level density view for national market analysis
  • County-level drill-down with event count and severity breakdown
  • Dynamic color scale adapts to loaded time range
  • Outbreak polygons show the geographic footprint of multi-county storm systems

The Impact View mode aggregates storm events by state and county, giving roofing contractors a high-level picture of where the most damage has accumulated over any time window. Click any state to drill to county-level density. Click any county to see every confirmed event inside it, sorted by severity. The density color scale adjusts dynamically to the loaded time range, so a 7-day view and a 12-month view both show meaningful gradients.

Market Priority with Census Context

Compare storm activity with the population and housing profile of the surrounding market.

  • Households, residential density, population, and residential score modes
  • Top 50%, 25%, or 10% filters for the current storm results
  • Cached Census context; the weather reports remain unchanged
  • Turn the filter off at any time to restore the complete current scan

Market Priority ranks the storm events already loaded on the map using cached Census context. Choose households, residential density, total population, or a combined residential score, then show the top 50%, 25%, or 10% of the current results. The control helps a team compare markets while keeping the underlying NOAA/SPC reports intact.

Proximity Alerts & Push Notifications

Get notified the moment a storm hits your territory.

  • Configurable general alert radius from 5 to 300 miles around an address
  • Filter by event type and minimum severity
  • Push notifications on desktop and mobile (PWA)
  • Alert history panel shows all recent notifications

Set an alert area around a location and receive a push notification when a qualifying hail, tornado, or wind report is recorded nearby. Choose the event types and minimum severity that matter to your work. Push support depends on the browser and device, and Apple devices require the installed Home Screen app.

Historical Storm Archive

Up to 2 years of NOAA storm history at your fingertips.

  • 7-day, 14-day, 30-day, 60-day, 90-day, 6-month, 1-year, and 2-year presets
  • Timeline playback with scrubber and auto-play
  • Cumulative and snapshot playback modes
  • Identify recurring storm corridors for market expansion planning

Access up to 24 months of NOAA storm event history, filterable by event type, severity, and date range. The Timeline Playback feature lets you scrub through history and watch outbreaks build over time — in cumulative mode (all events up to the selected date) or snapshot mode (only events on that date). Use the historical archive to identify recurring hail corridors, analyze seasonal patterns, and build a data-driven canvassing strategy.

CSV & KML Export

Push storm data directly into your CRM, canvassing app, or aerial imagery tool.

  • State-level export with type and severity filters
  • Time range presets: 7-day, 30-day, 90-day, 1-year, ALL
  • CSV for spreadsheets and systems that accept standard CSV imports
  • KML for Google Earth and tools that accept standard KML files

Export a state's filtered storm events as a CSV or KML file. Each row includes the available event location, date, storm type, magnitude, and geographic context. Standard CSV and KML files can be reviewed in spreadsheets, mapping tools, CRMs, or canvassing systems that support those formats.

Property Storm History Reports

One-click PDF storm history for any address — saved permanently to your account.

  • Every NOAA-verified event within 1 mile of the address
  • Data going back to 2014 from the NWS Storm Data archive
  • Hail size, wind speed, EF rating, date, time, and distance for every event
  • Saved in My Reports for later download or sharing

Generate a PDF storm-history report for an address in the United States. The report lists available NOAA/NWS hail, tornado, and wind records within the report radius going back to 2014. Reports are saved to your account for later download, sharing, and field follow-up.

Tornado Track Visualization

See the full path of every tornado — EF rating, start, end, and width.

  • Animated tornado path lines with EF rating color coding
  • Start/end coordinates, path length, and maximum width
  • Outbreak cluster polygons for multi-county storm systems
  • Outbreak focus mode zooms to a single outbreak for detailed analysis

THOR Storm Mapper reconstructs tornado tracks from sequential NOAA event reports and renders them as animated paths on the map. Each track shows the EF rating, start and end coordinates, path length, and maximum width. Outbreak clusters group related tornado and storm events from the same weather system into a single polygon, showing the full geographic footprint of a multi-county outbreak.

Mobile-First, No App Download Required

Full feature set on any device — phone, tablet, or desktop.

  • Responsive layout for phone, tablet, and desktop
  • Install to home screen as a PWA — works like a native app
  • Push notifications on mobile without an app store download
  • No app-store download required

THOR Storm Mapper is a Progressive Web App (PWA) designed for phone, tablet, and desktop browsers. Install it to a supported device home screen for a focused app-like view. Browser and operating-system rules determine whether push notifications are available.

Lead Storm Monitor — Storm-Triggered Lead Intelligence

Your entire lead base, watched 24/7. The moment a storm hits, you know first.

  • Import leads from Spotio, Salesforce, JobNimbus, or any CSV
  • Per-lead local monitoring from 1–5 miles or a 25-mile Area Monitor
  • Instant push + email alert when a storm hits a monitored address
  • Per-event thresholds: hail size, tornado category, wind speed
  • Storm Hits log — full history of every storm event per lead
  • Long-press map to drop a canvassing lead pin instantly
  • Emoji disposition tracking: New, Contacted, Scheduled, Sold, Lost
  • One-tap property report generation from any lead card
  • Apply settings to all existing leads with one click

Import existing leads from a supported CSV export, including files from systems such as Spotio, Salesforce, or JobNimbus. THOR checks each saved address against qualifying hail, tornado, and wind reports. Use the normal local radius controls or the fixed 25-mile Area Monitor, set event thresholds, drop leads on the map, track dispositions, and open the recorded storm history from a lead card.

What the THOR subscription includes

One monthly plan, one nationwide map, and no per-state add-on.

AreaIncludedDetails
Pricing$34/month after trialOne nationwide subscription, billed monthly
Weather dataHail, tornado, and wind reportsNOAA/SPC reports with radar and hail-swath context
ExportCSV and KMLFiltered state-level event exports in standard formats
CoverageAll 50 statesNo state bundle or geographic add-on
Property historySaved PDF reportsNearby storm records going back to 2014
MobileResponsive PWAPhone, tablet, and desktop browser access
Built-in canvassingLead import, pins, dispositions, call/drive, Storm HitsLocal radii or a fixed 25-mile Area Monitor
Market priorityPopulation and housing contextRank loaded storm events by cached Census residential measures

Built for Every Role in Storm Restoration

Roofing Contractors

Review reported storm areas, compare severity and radar context, and decide where a qualified property inspection makes sense.

Public Adjusters

Organize nearby NOAA/NWS event records into a research file while keeping the property inspection and claim decision separate.

Storm Chasers

Real-time outbreak tracking, radar overlays, and tornado path visualization for field operations and research.

Homeowners

Review reported storm activity near an address since 2014 before deciding whether to request a qualified inspection.

Turn storm data into a working plan

NOAA reports, radar frames, and radar-derived hail swaths help document when and where severe weather was observed or estimated. THOR keeps that storm history, map context, and property reporting workflow together so your team can move from regional analysis to property follow-up.

Compare hail-map options and published pricing

Questions roofers ask before trying THOR

What does THOR Storm Mapper cost?

THOR costs $34 per month after a 14-day free trial. The trial does not require a credit card, and the subscription is not limited to one state.

Is THOR a nationwide hail map?

Yes. One subscription covers all 50 states. The interactive map includes NOAA/SPC hail, tornado, and wind reports plus radar-derived hail swaths where suitable radar data is available.

What does Market Priority do?

Market Priority ranks the storm events already loaded on the map by cached Census residential context. You can sort by households, residential density, population, or a combined residential score, then keep the top 50%, 25%, or 10% visible. The original weather data stays intact while your team compares market potential.

Can roofers export storm data from THOR?

Yes. THOR can export filtered state-level storm events as CSV or KML. Those files can be reviewed in spreadsheets, mapping tools, CRMs, or canvassing systems that accept standard CSV or KML imports.

Does THOR work on a phone or tablet?

Yes. THOR runs in a supported browser on phones, tablets, and desktop computers. It can also be installed to a device home screen as a Progressive Web App.

Ready to See the Storm for Yourself?

Start your 14-day free trial — no credit card required. Full access to every feature from day one.

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$34/month after trial · Cancel anytime · No app download required