Boston · Street-Level Snowfall Analysis · Winter 2025–2026

Boston's stormiest
month
in a decade —
mapped street by street.

The two prior winters combined for just 22.2 inches of snow. Then January arrived. Two storms in six weeks buried the city under nearly 35 inches — more than the prior two full winters combined.

62in
Season snowfall 2025–26
21in
single storm peak
2
near-snowless winters before this
41k
street segments mapped
Scroll to explore
Interactive Map

Every street. Every storm.

Select a storm below to see snowfall intensity across Greater Boston's 41,000+ street segments. Hover any street for exact measurements.

Snowfall
0"20"40"60"77"+
Show plow routes
Historical Context

How does this winter rank?

Seasonal snowfall at Boston Logan Airport, 1980–2026. After back-to-back drought winters, the 2025–26 season came in at 62.5in — ranking #10 all-time at Logan Airport.

Methodology

How this was built.

Data Sources

CoCoRaHS — 27 volunteer observer stations across Boston metro (7 zero-reading stations excluded). Daily NewSnowDepth measurements, Oct 2025 – Mar 2026.

NOAA GHCN Daily — Boston Logan Airport (USW00014739). Historical seasonal totals 1980–2026.

OpenStreetMap — Street geometry via osmnx Python library.

Spatial Interpolation

Street-level snowfall is estimated using Inverse Distance Weighting (IDW) with power=2, k=8 nearest neighbors. Each of the 26,064 street segment midpoints is assigned a snowfall estimate based on a weighted average of the 8 nearest CoCoRaHS stations — closer stations carry proportionally greater weight.

Plow priority is derived from road classification (major → secondary → residential) where City of Boston open data was unavailable.

Mekhal Raj
Data & Analytics · Systems Analyst · Boston, MA

6+ years in data engineering, analytics, and AI/ML. Built this project end-to-end — from NOAA API pipeline to spatial interpolation to this visualization. Open to new opportunities.

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