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.
Collector checked ; feed generated . Zero cells does not establish coverage or clear weather. Observations from different radars are not merged.
Station and river observations (23)
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: 24; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 15:56:00 UTC.
Observed sustained wind · 24 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Temperature, dew point and pressure trendsObserved temperature · 24 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Observed dew point · 24 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.Observed sea-level pressure · 22 retained observations; 3 discontinuities. Lines join reported values only; missing intervals are not interpolated.Observed reports as a table (24)
Observed (UTC)
Wind / gust (kt)
From (° true)
Temperature / dew point (°C)
Pressure (mb)
Visibility (mi)
2026-10-17 15:56:00 UTC
0 / Not reported
Calm
8.9 / -7.8
1021.9
10 or more
2026-10-17 16:56:00 UTC
0 / Not reported
Calm
12.8 / -5.6
1022.3
10 or more
2026-10-17 17:56:00 UTC
4 / Not reported
10
17.2 / -1.7
1021.8
10 or more
2026-10-17 18:56:00 UTC
7 / Not reported
350
18.3 / 0
1021.2
10 or more
2026-10-17 19:56:00 UTC
5 / 14
Variable
20 / 1.1
1020.9
10 or more
2026-10-17 20:56:00 UTC
11 / Not reported
320
19.4 / 2.2
1020
10 or more
2026-10-17 21:56:00 UTC
9 / Not reported
360
18.3 / 3.3
1019.9
10 or more
2026-10-17 22:56:00 UTC
11 / Not reported
340
18.9 / 3.9
1019.8
10 or more
2026-10-17 23:56:00 UTC
8 / Not reported
340
17.8 / 5
1020
10 or more
2026-10-18 00:56:00 UTC
6 / Not reported
340
15.6 / 5.6
1019.8
10 or more
2026-10-18 01:56:00 UTC
5 / Not reported
340
13.3 / 6.1
1020.5
10 or more
2026-10-18 02:56:00 UTC
7 / Not reported
330
11.1 / 6.1
1020.6
10 or more
2026-10-18 03:56:00 UTC
4 / Not reported
330
10 / 5.6
1020.5
10 or more
2026-10-18 04:56:00 UTC
3 / Not reported
260
7.2 / 3.9
1020
10 or more
2026-10-18 05:56:00 UTC
7 / Not reported
310
8.9 / 5
1019.9
10 or more
2026-10-18 06:56:00 UTC
6 / Not reported
290
7.2 / 4.4
1020.2
10 or more
2026-10-18 07:56:00 UTC
4 / Not reported
190
3.3 / 2.2
1020.1
10 or more
2026-10-18 08:56:00 UTC
5 / Not reported
180
3.9 / 2.8
1020
10 or more
2026-10-18 09:56:00 UTC
5 / Not reported
170
2.2 / 2.2
1020
10 or more
2026-10-18 10:56:00 UTC
4 / Not reported
170
1.7 / 1.7
1019.8
10 or more
2026-10-18 11:56:00 UTC
0 / Not reported
Calm
0.6 / 0.6
1019.9
10 or more
2026-10-18 12:16:00 UTC
0 / Not reported
Calm
0 / 0
Not reported
1.75
2026-10-18 12:41:00 UTC
0 / Not reported
Calm
-1.7 / -2.2
Not reported
1.75
2026-10-18 12:56:00 UTC
3 / Not reported
120
-2.8 / -2.8
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.
office-afd · source-revision · Recorded 2026-10-18T13:10:05.368Z
office-hwo · source-revision · Recorded 2026-10-18T13:10:05.368Z
radar-alerts · source-revision · Recorded 2026-10-18T13:09:04.628Z
radar-alerts · source-revision · Recorded 2026-10-18T13:08:04.204Z
radar-alerts · source-revision · Recorded 2026-10-18T13:07:03.266Z
radar-alerts · source-revision · Recorded 2026-10-18T13:01:03.117Z
radar-alerts · source-recovered · Recorded 2026-10-18T13:01:03.117Z
radar-alerts · source-interrupted · Recorded 2026-10-18T13:00:17.735Z
Recording coverage and limits
warnings: retained from 2026-10-17T13:10:28.760Z through 2026-10-18T13:10:04.451Z
outlooks: retained from 2026-10-17T13:10:28.760Z through 2026-10-18T13:10:05.368Z
hydro: retained from 2026-10-17T13:10:28.760Z through 2026-10-18T13:05:04.816Z
analysis: retained from 2026-10-17T13:10:28.760Z through 2026-10-18T13:00:08.827Z
winter: retained from 2026-10-17T13:10:28.760Z through 2026-10-18T13:08:04.597Z
Source-message history is not recorded imagery replay. Recorded radar/satellite imagery is not available in this view.
Checks every minute; each layer keeps its own time.
Analysis and model context
Current cached context, independently dated. Regional reference: OR; a reference within a wider monitoring area does not replace the complete warning geography. This section remains separate from the historical replay cursor and official cyclone forecast. Use Forecast to pin a retained model package.
Surface: what stations observe and WPC analyses
Oregon: one station shown in each small area of the map, so it stays legible; the table lists every station in a state.
On the map
72Observed temperature, °F, above-left of the station
65Observed dew point, °F, below-left
Observed temperature and dew point are left off the map on a screen this narrow: the table below lists every station’s.
⟋Observed wind: the staff points to where it blows from; a full barb is 10 kt, a half 5, a pennant 50; a ring is calm
Analysis cold front
Analysis warm front
Analysis stationary front
Analysis occluded front
Analysis dry line
Analysis trough
H LAnalysis high and low pressure centres, with their pressure in millibars
WPC’s bulletin does not say which side of a front its symbols go, so this map draws no triangles or half-circles; each front is named on the map and in the list.
Observed 2,067 stations, each at its own time, most between and . Airport and other automated stations’ reports (METARs), as AviationWeather.gov decodes them. Left out: 620 reports flagged by the station for maintenance and two reports that cannot be right; no other quality control is applied here.
Analysis WPC’s surface analysis valid , issued . A forecaster’s analysis of the fronts and pressure centres at that hour, every three hours.
Stationary front across Montana, Idaho and Oregon
Every station in Oregon (23)
23 stations in Oregon, by identifier
Station
Observed
Temperature
Dew point
Wind
Pressure
Visibility
Weather
K3S8
45 °F
43 °F
calm
—
10+ mi
—
K4S2
34 °F
32 °F
190° 3 kt
—
10+ mi
—
K6S2
41 °F
41 °F
100° 3 kt
—
10+ mi
—
K77S
39 °F
39 °F
calm
—
0.25 mi
FG
KBDN
37 °F
34 °F
220° 5 kt
—
10+ mi
—
KBKE
33 °F
30 °F
270° 3 kt
1020.6 mb
10+ mi
—
KBNO
32 °F
26 °F
calm
1019.3 mb
10+ mi
—
KGCD
38 °F
33 °F
130° 6 kt
—
10+ mi
—
KHIO
39 °F
37 °F
calm
1020.9 mb
10+ mi
—
KHRI
38 °F
35 °F
150° 4 kt
1020.8 mb
10+ mi
—
KLKV
23 °F
17 °F
030° 4 kt
1021.1 mb
10+ mi
—
KLMT
27 °F
22 °F
calm
1018.2 mb
10+ mi
—
KMEH
27 °F
24 °F
calm
1021.7 mb
10+ mi
—
KMFR
44 °F
41 °F
calm
1017.7 mb
10+ mi
—
KONP
41 °F
41 °F
090° 4 kt
—
7 mi
—
KRBG
52 °F
43 °F
350° 5 kt
1019.0 mb
10+ mi
—
KRDM
27 °F
27 °F
120° 3 kt
1020.5 mb
10+ mi
—
KREO
40 °F
18 °F
080° 3 kt
1017.1 mb
—
—
KS12
45 °F
41 °F
330° 4 kt
—
10+ mi
—
KS21
30 °F
30 °F
calm
—
0.25 mi
FZFG
KS33
39 °F
36 °F
120° 4 kt
—
10+ mi
—
KS39
30 °F
28 °F
calm
—
2.5 mi
BR
KTMK
36 °F
36 °F
calm
—
0.25 mi
-RA FG
Surface observations checked· Data: NOAA/NWS Aviation Weather Center
WPC surface analysis checked· Data: NOAA/WPC
Spotlight: Winter Storm Severity Index
1 of 15
Winter Storm Severity Index
WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”
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
Frost Advisory2until · NWS Portland OR
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.
NHC’s and JTWC’s storms, their official graphics and the watches and warnings for them. Storm Mode’s own tropical panels arrive with its tropical events.
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