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Middle Atlantic RFC

River Forecast Center

Precipitation Departures

Weather.gov > Middle Atlantic RFC > Precipitation Departures

Precipitation Departure Maps
New York/Pennsylvania New Jersey
Delaware/Maryland/Virginia/West Virginia MARFC Basins
All MARFC Counties Text Data

Archived Departure Data and Maps
Monthly Departure Maps

2025
New York and Pennsylvania New Jersey Delaware, Maryland, Virginia, West Virginia All MARFC Counties MARFC Basins
January January January January January
February February February February February
March March March March March
April April April April April
May May May May May
June June June June June
July July July July July
August August August August August
September September September September September
October October October October October
November November November November November
December December December December December

2024
New York and Pennsylvania New Jersey Delaware, Maryland, Virginia, West Virginia All MARFC Counties MARFC Basins
January January January January January
February February February February February
March March March March March
April April April April April
May May May May May
June June June June June
July July July July July
August August August August August
September September September September September
October October October October October
November November November November November
December December December December December

2023
New York and Pennsylvania New Jersey Delaware, Maryland, Virginia, West Virginia All MARFC Counties MARFC Basins
January January January January January
February February February February February
March March March March March
April April April April April
May May May May May
June June June June June
July July July July July
August August August August August
September September September September September
October October October October October
November November November November November
December December December December December

For data before 2023, please contact the webmaster. 

MARFC's county departure maps date back to August 1995, and our basin departure maps date back to January 2007. 

Monthly Departure Text

2025

2024

2023

For data before 2023, please contact the webmaster. 

Text data files begin February 1998
  The county and basin "normal" precipitation values are derived from data generated by the PRISM (Parameter-elevation Regressions on Independent Slopes Model) Climate Group at Oregon State University.