Storm Mode / Analysis

Snow analysis — NOHRSC

Snow water equivalent · current metadata check

Last successful metadata check 2026-10-17 03:08:04.433 UTC; latest attempt 2026-10-17 03:08:03.502 UTC.

NOHRSC footprint times are metadata; pixel analysis time is not independently verified. Snow-depth pixels have previously differed from the footprint time. This is modeled/assimilated snow analysis, not a measurement at a place. Unshaded and no-data areas do not establish zero snow.

Snow water equivalent analysis for the lower 48, in NOHRSC’s legend colors
Snow water equivalent · NOHRSC footprint valid 2026-10-16 18:00:00 UTC; source file produced 2026-10-17 02:05:02 UTC; picture retrieved 2026-10-17 02:08:03.951 UTC.

Original raster units: millimetres; the source-rendered legend is in inches. No numeric point sampling is supplied.

Raster selection, georeferencing and provenance

Raster catalog ID 983922, zz_ssmv11034tS__T0001_latest.grib2. The export selects this ID and the footprint was unchanged before and after export. This check does not independently establish the pixels’ valid time.

EPSG:3857 · fixed Web Mercator extent -13914936.349159196, 2751938.4280227264, -7347086.392356055, 6447745.522359409 metres · 1180 × 664 pixels. The returned export extent was verified before publication.

Image SHA-256 8b21ecd982672d1e7551249320fd6b0bfc0d8ecdf240c4a63cf765dbf2a65c79; footprint SHA-256 18f50e28025734f4f24308be86fd510288db32f5298d292f3d1f12500cd95185; legend SHA-256 5ed7490bc68fdf7f2e0ceda3c08c0dfe7c55b4131953c9f1b5abc50d0188204b.

Retained canonical frame metadata · Official version-filtered export request

Retained snow water equivalent pictures

Target: 24 hours of captured source versions, at most 16 per field. History begins with the first recorded capture; missing intervals are not interpolated. Source metadata clocks may repeat or differ from pixel analysis time.

Storm Mode · Winter forecasts · Source status