Storm Warden

Route Weather

Plan a route and see exactly what weather you'll encounter at every point along the way, at the time you'll actually be there.

The flagship feature of Storm Warden. Tap the map to set start and end points, and Storm Warden calculates the route with weather waypoints along it — each timestamped to your estimated arrival time. A vertical departure time slider lets you explore up to 12 hours into the future, with a severity heatmap showing which departure times have the worst conditions at a glance.

Tap-to-plan routing with time-stamped weather at every waypoint
Departure time slider with severity heatmap for optimal timing
Color-coded waypoint markers showing condition severity (green to red)
Alternate route comparison with animated expand/collapse
Map and timeline toggle views for different presentation styles

Rest Stops

Model real-world breaks along your route and have all weather forecasts shift to match your actual arrival times.

Toggle rest stop mode and tap anywhere along your route to add a break. Set durations from 15 minutes to 12 hours. Each rest stop pushes all downstream waypoint arrival times forward, triggering a full weather recalculation so forecasts, NWS alerts, and the departure heatmap all reflect when you'll actually be at each location.

Tap-to-place rest stops snapped to the route geometry
Duration picker from 15 minutes to 12 hours
Cumulative delay propagation — multiple stops stack correctly
Full weather recalculation with adjusted arrival times

Trip Summary

A single-screen go/no-go briefing that distills everything Storm Warden knows about your route.

The pre-trip briefing provides a color-coded overall trip verdict (green to red), optimal departure time recommendation, key hazard identification, NWS alert summary, wind efficiency analysis, and a segment-by-segment breakdown of conditions along the route. All computed from existing data with zero additional API calls.

Overall trip verdict with worst-condition identification
Best departure time recommendation from heatmap data
Top hazards ranked by severity with location markers
Segment breakdown using hybrid severity-transition algorithm
Zero API calls — operates on already-fetched route data

NWS Weather Alerts

Real-time National Weather Service alert integration across routes and watch points.

Active NWS alerts are rendered as colored polygon overlays directly on the map using the official NWS event color palette (75+ event types). Time-aware filtering updates alert visibility in ~1ms as you move the departure slider. A bundled binary file maps ~7,800 zone codes to polygon coordinates via O(log n) binary search, with non-blocking architecture so weather data always loads even if alerts are unavailable.

Alert polygon overlays with official NWS color palette
GPU-side time filtering — ~1ms updates when departure time changes
Per-waypoint alert chips on the timeline view
Alert detail sheets with full NWS descriptions and instructions
Bundled zone-to-polygon binary for offline alert geometry

Wind Report

A dedicated full-screen wind analysis tool with five visualization modes.

Five specialized views rendered over a static map snapshot for battery efficiency: Overview (severity circles with direction arrows), Fuel Efficiency (drag multiplier coloring), Headwind (strong headwind segments), Crosswind (dangerous crosswind highlighting), and Animated (real-time GPU-rendered particle field showing actual wind flow). The map snapshot approach kills the GL surface entirely and uses a pure-Dart affine projection for all rendering.

Five visualization modes: Overview, Fuel Efficiency, Headwind, Crosswind, Animated
Animated particle field showing real wind flow from weather model data
Battery-optimized: captures map snapshot, kills GL surface
Pure-Dart affine geo-to-screen projection without platform channel calls
Per-mode info and summary modals for detailed wind conditions

Trip Weather Dashboard

A comprehensive chart-based view of all weather conditions along the route.

All enabled weather parameters plotted on a single band-relative chart where the Y-axis is divided into four severity zones (green, advisory, warning, severe) so different parameter types can be compared on the same visual scale. An interactive crosshair with tooltip shows exact values at any point, synchronized with an embedded route map and compound impact strips.

Combined multi-parameter chart with severity-banded Y-axis
Interactive crosshair with sorted parameter tooltip
Synchronized embedded route map tracking chart position
Compound impact strips showing where combined conditions trigger
Renders from pre-fetched route data — no additional API calls

Watch Points

Save and monitor up to 10 geographic locations for ongoing weather awareness.

Each watch point shows real-time current conditions with severity indicators plus a horizontal 24-hour forecast timeline. Active NWS alerts are displayed per watch point with a highest-severity summary badge. Context templates (default, farm, house) provide customized display, and progressive loading shows cached conditions instantly while forecasts load in the background.

Current conditions plus 24-hour forecast timeline per location
NWS alert cards with expandable descriptions and instructions
Context templates for different location types
Map view of all watch points with severity-colored markers
Sort by name, creation date, or distance from current location

Impact Configurator

Define what weather conditions matter to you with fully customizable thresholds.

Set three severity thresholds (Advisory, Warning, Severe) for every weather parameter. Bidirectional parameters like temperature support both cold and heat thresholds independently — the UI renders a single slider with six thumbs and a green "normal" zone in the middle. Create compound impact rules that trigger when multiple conditions are met simultaneously, using weakest-link severity logic.

Customizable thresholds for all weather parameters
Bidirectional sliders for temperature (cold + heat thresholds)
Compound impact rules with AND-logic multi-parameter triggers
Three severity levels: Advisory (yellow), Warning (orange), Severe (red)
Derived parameters: headwind, crosswind, drag multiplier, fuel efficiency

Tile Overlays

Weather radar and model data rendered as map tile layers with smooth transitions.

The middleware serves 256x256 greyscale PNG tiles with weather data encoded as pixel values. Client-side Mapbox expressions transform greyscale to color using parameter-specific color ramps. Double-buffered A/B layer transitions with crossfade animation prevent flicker when switching departure times or parameters. Tiles render below roads and labels but above terrain, keeping geographic context visible.

Colorized raster tiles with parameter-specific color ramps
Double-buffered A/B layer transitions with crossfade animation
Client-side greyscale-to-color transformation via Mapbox expressions
Layer ordering preserves roads, labels, and state boundaries
Smooth parameter and departure time switching without flicker

Weather Infrastructure for Your Applications

Building weather into your product is harder than it should be.

Data Complexity

Infrastructure Burden

Time to Market

From raw data to deployed product.

Ingest

Serve

Build

This dashboard is running against our API right now.

Current Conditions

48-hour Forecast

Interactive Weather Map

See what's possible when you don't have to build the plumbing.

Storm Warden

Route Weather

Rest Stops

Trip Summary

NWS Weather Alerts

Wind Report

Trip Weather Dashboard

Watch Points

Impact Configurator

Tile Overlays

One pipeline, four stages.

Your Data

Stormgard

Storm Glass API

Your Application

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