Source-rendered snow depth and snow water equivalent for the lower 48. History changes this snow picture only; warnings and radar keep their own clocks.
No NOHRSC picture displayed on the interactive map.
0 - 0.39 in
0.39 - 2.0 in
2.0 - 3.9 in
3.9 - 9.8 in
9.8 - 20 in
20 - 39 in
39 - 59 in
59 - 98 in
98 - 197 in
197 - 295 in
295 - 394 in
394 - 787 in
NOAA/NWS/NOHRSC’s original picture and legend. No station or address value is inferred.
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.
Replay uses retained source bytes. Recording begins with activation; missing history is not clear weather.
Live sources keep independent clocks.
Replay coverage and interpretation
Rolling target: 24 hours; cells: six hours. Radar: NOAA MRMS national overview, 8-minute tolerance. Satellite: original GOES GeoColor day/night picture, hourly sampling, 75-minute tolerance. No interpolation or latest-image fallback. Warning and source checks retain their own clocks. “Recorded by” is collector acquisition evidence, not exact browser publication history.
Current GLM density, velocity and specialist layers are hidden during replay. Snow uses retained footprint metadata with unverified pixel time. Forecast uses one pinned issuance/run and exact valid time.
Surface source current; observed water-level source current. Each reading keeps its own time. Map markers show at most 500 stations and 500 gauges; the complete source directory is paginated.
Circle: surface station; square: water-level gauge. Filled: current reading and source; hollow: stale, unconfirmed or missing observation. Marker color is not a hazard category. Enable “Stations and gauges” in Layers to inspect them on the map.
Station observations, not an address forecast or cyclone maximum wind. Maintenance-flagged, old and implausible reports are excluded by the existing parser; this is not independent NWS quality control.
Retained observations: 32; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 17:20:00 UTC.
Observed sustained wind · 32 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Temperature, dew point and pressure trendsObserved temperature · 32 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Observed dew point · 32 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Observed sea-level pressure · 32 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Observed reports as a table (32)
Observed (UTC)
Wind / gust (kt)
From (° true)
Temperature / dew point (°C)
Pressure (mb)
Visibility (mi)
2026-10-17 17:20:00 UTC
17 / 22
130
17 / -3
1023.9
10 or more
2026-10-17 17:55:00 UTC
18 / 24
120
16.6 / -2
1023.6
10 or more
2026-10-17 18:22:00 UTC
18 / Not reported
120
17 / -1
1023.2
10 or more
2026-10-17 18:55:00 UTC
15 / 23
120
17.7 / -0.6
1022.6
10 or more
2026-10-17 19:20:00 UTC
16 / 23
140
19 / 0
1021.9
10 or more
2026-10-17 19:55:00 UTC
15 / 22
130
18.8 / -0.1
1021.2
10 or more
2026-10-17 20:12:00 UTC
15 / 19
90
20 / 0
1020.5
10 or more
2026-10-17 20:40:00 UTC
15 / 22
120
20 / 0
1020.1
10 or more
2026-10-17 20:55:00 UTC
15 / 20
110
20.5 / 0.3
1019.8
10 or more
2026-10-17 21:55:00 UTC
13 / Not reported
120
21 / 0.8
1019.4
10 or more
2026-10-17 22:55:00 UTC
14 / Not reported
130
20.8 / 1.1
1019.1
10 or more
2026-10-17 23:55:00 UTC
12 / Not reported
130
20.4 / 1.3
1019.4
10 or more
2026-10-18 00:55:00 UTC
10 / Not reported
130
18.8 / 0.8
1019.8
9
2026-10-18 01:55:00 UTC
10 / Not reported
100
16.9 / 0.9
1020.1
9
2026-10-18 02:26:00 UTC
5 / Not reported
130
17 / 2
1020.8
9
2026-10-18 02:55:00 UTC
7 / Not reported
110
15.5 / 1.2
1020.8
9
2026-10-18 03:55:00 UTC
10 / Not reported
110
15 / 1.2
1021.5
9
2026-10-18 04:55:00 UTC
9 / Not reported
90
15 / 0.4
1020.8
9
2026-10-18 05:55:00 UTC
7 / Not reported
110
14 / 0.6
1020.8
9
2026-10-18 06:55:00 UTC
7 / Not reported
70
13.3 / 0.7
1020.5
8
2026-10-18 07:55:00 UTC
4 / Not reported
40
12.3 / 0.4
1020.1
9
2026-10-18 08:55:00 UTC
7 / Not reported
70
11.8 / 0.6
1019.8
8
2026-10-18 09:55:00 UTC
5 / Not reported
80
11.5 / 0.9
1019.1
8
2026-10-18 10:46:00 UTC
5 / Not reported
70
12 / 1
1018.7
8
2026-10-18 10:55:00 UTC
5 / Not reported
70
12.3 / 1
1019.1
9
2026-10-18 11:55:00 UTC
3 / Not reported
110
10.7 / 0.4
1019.1
9
2026-10-18 12:55:00 UTC
4 / Not reported
100
10.8 / 0.8
1019.4
9
2026-10-18 13:55:00 UTC
4 / Not reported
140
10.8 / 1.1
1019.8
9
2026-10-18 14:22:00 UTC
5 / Not reported
60
12 / 1
1020.5
10 or more
2026-10-18 14:55:00 UTC
5 / Not reported
40
13.2 / 0.9
1020.5
10 or more
2026-10-18 15:42:00 UTC
8 / Not reported
60
16 / 3
1020.5
10 or more
2026-10-18 15:55:00 UTC
7 / Not reported
60
16.9 / 3.2
1020.5
10 or more
Capture times, quality and provenance
Each report keeps its observation time, first capture of this version, and the SHA-256 of the source bulk body. Corrections at the same observation time replace that point and are marked; unrelated bulk-file changes do not freshen a report.
WPC’s WSSI, overall impact, Days 1–3, valid to , issued . WPC issues each day and cause on its own clock. Not a warning, and not a chance. Data: NOAA/NWS/WPC.
Chance of Moderate impacts or worse, Day 1
WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”
WPC’s Probabilistic Winter Precipitation Forecast, to , issued . Outlines, as WPC draws them. Data: NOAA/NWS/WPC.
Winter watches, warnings and advisories
No winter or cold watch, warning or advisory in force in this area.
NWS’s winter and cold alerts in force in the area, by event as issued, each counted once, with the offices that issued them and the latest end. Data: NOAA/NWS.
Snow on the ground
NOHRSC snow depth and snow water equivalent use the source’s original pictures and legends, with qualified footprint times. Open the cached source page for availability and retained history. This wall has no snow picture to rotate; missing imagery does not mean no snow.
Issued , for to . WPC’s words, as written. Data: NOAA/NWS/WPC.
Radar, winter preset
The Radar page’s winter preset over the area: HRDPS forecast snow with NWS’s warnings on top, loaded by your browser. A forecast, labelled as one there.
Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.
0 - 0.39 in
0.39 - 2.0 in
2.0 - 3.9 in
3.9 - 9.8 in
9.8 - 20 in
20 - 39 in
39 - 59 in
59 - 98 in
98 - 197 in
197 - 295 in
295 - 394 in
394 - 787 in