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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit https://www.weather.gov/owp/operations for more information.



Weather Forecast Office Philadelphia/Mount Holly, NJ
River Observations River Forecasts Long-Range Flood Risk Precipitation Download Other Information

Day

Entire Period
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Forecast available
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Probability and forecasts available
Major Flooding
Moderate Flooding
Minor Flooding
Near Flood Stage
No Flooding
Forecasts Are Not Current
No Forecast Within Selected Timeframe
Out of Service
Flood Category Not Defined
At or Below Low Water Threshold

Last map update:
03/19/2024 at 01:03:41 am EDT
03/19/2024 at 05:03:41 UTC
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Additional USGS river gages can be found at the following Water Science Center links.

New Jersey

Pennsylvania
Delaware
Maryland

Additional water and weather forecasts can be found at the following Middle Atlantic River Forecast Center links.

72 Hour Precipitation Forecasts Used to Produce Hydrologic Forecasts

Amount of Rain Needed to Produce River Flooding Across Select Fast Responding Basins

New Jersey
Pennsylvania

Amount of Rain Needed to Produce Flash Flooding

1 Hour Rainfall
3 Hour Rainfall
6 Hour Rainfall

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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Page last modified: 2-Nov-2020 7:30 PM
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