Storm Mode / Analysis

Snow analysis — NOHRSC

Snow depth · current metadata check

Last successful metadata check 2026-10-17 02:38:03.082 UTC; latest attempt 2026-10-17 02:38:02.472 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 depth analysis for the lower 48, in NOHRSC’s legend colors
Snow depth · NOHRSC footprint valid 2026-10-16 15:00:00 UTC; source file produced 2026-10-17 02:05:02 UTC; picture retrieved 2026-10-17 02:08:03.828 UTC.

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

Raster selection, georeferencing and provenance

Raster catalog ID 1845308, zz_ssmv11036tS__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 f46ecd172749a07d05def4e7b81ff588e7006f28fde7f85fadfe3e7a75d45045; footprint SHA-256 68f5612219faaea87f09801aef65002752117e1f2b96ecebc43dc3edc85dea6f; legend SHA-256 5ed7490bc68fdf7f2e0ceda3c08c0dfe7c55b4131953c9f1b5abc50d0188204b.

Retained canonical frame metadata · Official version-filtered export request

Retained snow depth 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