National Weather Service United States Department of Commerce

 

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.