Philadelphia Weekend Weather & Storm Forecasts

Philadelphia Weekend Weather & Storm Forecasts

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Latest NAM data Available

Saturday, December 9, 2017 9:46 am GS

Latest NAM (morning run) has a QPF of 0.35 of PHL.   Snow totals 2-3 inches, Possibly 4.

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Current Conditions

Philadelphia

Last Updated on Oct 23 2018, 2:54 pm EDT

Weather by NOAA

Current Conditions: Partly Cloudy

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Temp: 66°F

Wind: SW at 9mph

Humidity: 40%

Dewpoint: 41.0°F

Your 5-Day Forecast at a Glance

Recent Comments

  • GS on WEEKEND WEATHER OUTLOOK- HURRICANE FLORENCEThank you! I appreciate your compliments.
  • Allie on WEEKEND WEATHER OUTLOOK- HURRICANE FLORENCEI agree with Helen, Your analysis is beyond reproach and without hype.…
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  • GS on I THOUGHT IT WAS GOING TO RAIN?Thanks for the compliment. Even with the updated forecast, I don’t thi…
  • T on I THOUGHT IT WAS GOING TO RAIN?Even when it’s not a big snowstorm this is interesting stuff and well…

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Definitions & Acronyms

QPF: “Quantity of Precipitation Falling”- given in inches, it’s the amount of water predicted to fall as measured in a rain gauge. For snowfall in inches, multiply the QPF by a factor of 10 – 15 (dependent upon temperature)

NAM: North American Mesoscale Model

GFS: Global Forecast System Model

HRRR: High Resolution Rapid Refresh Model

MOS: Model Output Statistics

NBM: National Blend of Models

NAM FOUS: NAM Forecast Output Statistics

More info at these links–

Basic Weather Information

American Meteorological Society Glossary

Teaching Yourself Weather Forecasting

Philadelphia National Weather Service Office

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Disclaimer

I am not a meteorologist and I provide this information as a hobby and for entertainment (mostly my own :-) .

While attempts are made to predict the weather as best as I can, use these forecasts at your own risk! I cannot be responsible for any direct or indirect consequential injury/damages due to your use of these forecasts.

Always check the NWS Official Forecast for your final plans.

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