CURRENT CONTEXT · 7 warnings total · 0 tornado warnings · 8 alerts including watches and advisories
Current alert feed · checked
Change time or forecast product
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.
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.
Collector checked not reported; feed generated not reported. Zero cells does not establish coverage or clear weather. Observations from different radars are not merged.
Station and river observations (43)
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.
unavailable · No observation in the latest cached source list. Retained readings below are historical; an absent gauge may have fallen below action stage or stopped reporting.
Tide gauge (coastal water level) · USCG Station Washington Street (IN MLLW) · Delaware River · -75.1417, 39.9333. Units ft; datum not supplied.
Stage in this gauge’s units, not a regional flood depth. Tide/lake gauges remain water levels; datum is not supplied by this feed. Historical observations and the latest forecast keep separate times.
Retained observations: 0; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:05.234Z; oldest available reading none.
Observed stage and separate NWS forecast · 0 retained observations; 0 discontinuities. Dashed: NWS forecast issued 2026-10-17 07:09:00 UTC; forecast valid times are not observations. Lines join reported values only; missing intervals are not interpolated.
NWS forecast · current
Highest listed forecast: 8.3 ft at 2026-10-20 01:00:00 UTC; issued 2026-10-17 07:09:00 UTC. Minor flooding.
Forecasts are issued routinely year-round.
Gauge thresholds: action not set; minor 8.2 ft; moderate 9.2 ft; major 10.2 ft.
Forecast points (72) · issued 2026-10-17 07:09:00 UTC
Forecast valid time (UTC)
Forecast Tide Height
2026-10-17 07:00:00 UTC
2.8 ft
2026-10-17 08:00:00 UTC
4.4 ft
2026-10-17 09:00:00 UTC
5.6 ft
2026-10-17 10:00:00 UTC
6.2 ft
2026-10-17 11:00:00 UTC
6.4 ft
2026-10-17 12:00:00 UTC
6 ft
2026-10-17 13:00:00 UTC
4.9 ft
2026-10-17 14:00:00 UTC
3.8 ft
2026-10-17 15:00:00 UTC
2.7 ft
2026-10-17 16:00:00 UTC
2 ft
2026-10-17 17:00:00 UTC
1.6 ft
2026-10-17 18:00:00 UTC
1.8 ft
2026-10-17 19:00:00 UTC
3.1 ft
2026-10-17 20:00:00 UTC
4.8 ft
2026-10-17 21:00:00 UTC
6.1 ft
2026-10-17 22:00:00 UTC
6.8 ft
2026-10-17 23:00:00 UTC
7.2 ft
2026-10-18 00:00:00 UTC
7 ft
2026-10-18 01:00:00 UTC
6.2 ft
2026-10-18 02:00:00 UTC
5.1 ft
2026-10-18 03:00:00 UTC
4.1 ft
2026-10-18 04:00:00 UTC
3.2 ft
2026-10-18 05:00:00 UTC
2.5 ft
2026-10-18 06:00:00 UTC
2 ft
2026-10-18 07:00:00 UTC
2.5 ft
2026-10-18 08:00:00 UTC
3.7 ft
2026-10-18 09:00:00 UTC
4.9 ft
2026-10-18 10:00:00 UTC
5.7 ft
2026-10-18 11:00:00 UTC
6.5 ft
2026-10-18 12:00:00 UTC
6.7 ft
2026-10-18 13:00:00 UTC
6.3 ft
2026-10-18 14:00:00 UTC
5.3 ft
2026-10-18 15:00:00 UTC
4.2 ft
2026-10-18 16:00:00 UTC
3.2 ft
2026-10-18 17:00:00 UTC
2.6 ft
2026-10-18 18:00:00 UTC
2.4 ft
2026-10-18 19:00:00 UTC
2.8 ft
2026-10-18 20:00:00 UTC
4.2 ft
2026-10-18 21:00:00 UTC
5.9 ft
2026-10-18 22:00:00 UTC
6.9 ft
2026-10-18 23:00:00 UTC
7.6 ft
2026-10-19 00:00:00 UTC
8 ft
2026-10-19 01:00:00 UTC
7.7 ft
2026-10-19 02:00:00 UTC
6.7 ft
2026-10-19 03:00:00 UTC
5.6 ft
2026-10-19 04:00:00 UTC
4.6 ft
2026-10-19 05:00:00 UTC
3.7 ft
2026-10-19 06:00:00 UTC
3.1 ft
2026-10-19 07:00:00 UTC
2.7 ft
2026-10-19 08:00:00 UTC
3.2 ft
2026-10-19 09:00:00 UTC
4.5 ft
2026-10-19 10:00:00 UTC
5.6 ft
2026-10-19 11:00:00 UTC
6.4 ft
2026-10-19 12:00:00 UTC
7 ft
2026-10-19 13:00:00 UTC
7.2 ft
2026-10-19 14:00:00 UTC
6.7 ft
2026-10-19 15:00:00 UTC
5.6 ft
2026-10-19 16:00:00 UTC
4.5 ft
2026-10-19 17:00:00 UTC
3.5 ft
2026-10-19 18:00:00 UTC
2.9 ft
2026-10-19 19:00:00 UTC
2.8 ft
2026-10-19 20:00:00 UTC
3.3 ft
2026-10-19 21:00:00 UTC
4.8 ft
2026-10-19 22:00:00 UTC
6.3 ft
2026-10-19 23:00:00 UTC
7.3 ft
2026-10-20 00:00:00 UTC
7.9 ft
2026-10-20 01:00:00 UTC
8.3 ft
2026-10-20 02:00:00 UTC
7.9 ft
2026-10-20 03:00:00 UTC
7 ft
2026-10-20 04:00:00 UTC
5.9 ft
2026-10-20 05:00:00 UTC
4.9 ft
2026-10-20 06:00:00 UTC
4.1 ft
NWS gauge impact statements
10.66 ft: (Mean Lower Low Water (MLLW)) The level reached on January 10, 2024.
10.62 ft: (MLLW) The level reached during Post Tropical Cyclone Sandy on October 30, 2012.
10.5 ft: In Philadelphia, Delaware Avenue from Penn Street to Washington Avenue is closed due to flooding. The I-95 off ramp to Washington Avenue is also closed. Eastbound Race Street from 2nd Street to Delaware Avenue floods and is closed. Eastbound Spring Garden Street from Front Street to Delaware Avenue floods and is closed.
10.49 ft: (MLLW) The level reached on November 25, 1950.
10.46 ft: (MLLW) The level reached on April 17. 2011.
10.36 ft: (MLLW) The level reached on October 29, 2021.
10.35 ft: (MLLW) The level reached on December 21, 2012.
10.2 ft: (MLLW) MAJOR FLOODING. At this level, widespread roadway flooding begins near the river and its tidal tributaries in Philadelphia and in the New Jersey counties of Camden and Gloucester. Vulnerable homes and businesses may be damaged as water levels rise further above this threshold. Numerous roads become impassable and some neighborhoods may be isolated. The flood waters become a danger to anyone who attempts to cross on foot or in a vehicle.
9.2 ft: (MLLW) MODERATE FLOODING. At this level, additional roadways near the river and its tidal tributaries in Philadelphia and in the New Jersey counties of Camden and Gloucester begin to flood. Lives may be at risk when people put themselves in harm's way. Some damage to vulnerable structures may begin to occur. COASTAL FLOOD WARNING LEVEL.
9 ft: (MLLW) Flooding begins along Columbus Boulevard in Philadelphia near the Ben Franklin Bridge. Generally, it is not a case of the river spilling over onto the roadway. The flooding problems tend to occur when the river is high and water begins to backup into the storm drains.
8.8 ft: (MLLW) Flooding begins on North Park Drive in Pennsauken NJ. Water backs up into Cooper River Lake in Camden County NJ. Flooding begins on South Park Drive in Collingswood and Haddon Township NJ. Flooding begins along Woodbury Creek in Woodbury NJ.
8.6 ft: (MLLW) Flooding begins along the Little Timber Creek between Gloucester City and Brooklawn NJ and around the Brooklawn Circle. Flooding begins along Timber Avenue, Edgewater Avenue and NJ Route 47 in Westville NJ. Flooding begins along Woodbury Creek and Hessian Run in West Deptford Township NJ, affecting Crown Point Road. Flooding begins along River Road Drive in West Deptford Township NJ.
8.5 ft: (MLLW) COASTAL FLOOD ADVISORY LEVEL.
8.4 ft: (MLLW) Flooding begins at the east end of Linden Avenue in Northeast Philadelphia. Flooding begins at the former Navy Shipyard in Philadelphia from both the Delaware River and the Schuylkill River. Flooding begins along Admiral Wilson Boulevard (US Route 30) and Baird Avenue in Camden NJ as the Cooper River overflows.
8.2 ft: (MLLW) MINOR FLOODING.
Observed reports as a table (0)
Observed (UTC)
Stage / units
Source category / water
No retained observations.
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.
Only observed gauge records enter this history. Forecast maxima and forecast hydrograph points never become observations. A missing datum or unsupported flow value remains unknown.
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
Freeze Warning77 not yet in effect · until · NWS Baltimore MD/Washington DC, NWS Binghamton NY, NWS Cleveland OH, 4 more offices
Frost Advisory11 not yet in effect · until · NWS Cleveland OH
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.
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