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>MARISA a NOAA Mid-Atlantic RISA team

Mid-Atlantic Regional Climate Summaries

The MARISA Seasonal Climate Impacts Summary and Outlook is a seasonal series produced by NOAA’s Mid-Atlantic Regional Integrated Sciences and Assessments program that details seasonal weather and climate variability and change in the Mid-Atlantic region. Explore the Climate Data Tools developed for the Climate Summary series.

Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Spring 2024
Average temperatures were higher than normal for most of the Mid-Atlantic region in spring 2024. Explore extreme precipitation projections under future climate scenarios in an interactive tool.
Jun 21, 2024
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Winter 2023–2024
Winter was warmer than normal in the Mid-Atlantic region, with eastern regions also experiencing wetter than normal conditions. This edition also provides a primer on climate models and the latest phase of the Coupled Model Intercomparison Project (CMIP).
Apr 5, 2024
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Fall 2023
The Mid-Atlantic region was warmer and drier than average during fall, with drought conditions contributing to an active fire season in Virginia. Explore an interactive tool demonstrating historical changes in the number of high heat index days.
Dec 21, 2023
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Summer 2023
Air quality was a significant issue in the Mid-Atlantic region during the summer season, with every state recording their worst air quality on record during June. Average temperatures were cooler than normal for the first season since 2018.
Oct 3, 2023
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Spring 2023
The spring season was drier than normal in the Mid-Atlantic region, and five sites experienced their least-snowy season on record. Learn more and explore an analysis of how the the timing of the first hot day is projected to change in the future.
Jun 29, 2023
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Winter 2022–2023
The winter season was marked by warmer than normal temperatures and lower than average snowfall in the Mid-Atlantic region. An interactive tool shows an analysis of how the average number of days per year with cold low temperatures is projected to change in the future.
Mar 29, 2023
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Fall 2022
Most of the region experienced temperatures that were within two degrees of normal for the fall 2022 season. The first week of November was unusually warm: On November 7, Lynchburg, Virginia recorded its warmest November day on record with a high of 84 degrees.
Dec 23, 2022
Mid-Atlantic Regional Climate Impacts and Summary and Outlook: Summer 2022
Many sites in the Mid-Atlantic region experienced a high number of days where the daily low temperature remained above 70- or 75-degrees F. A few locations also experienced unusually high maximum daily temperatures in the month of July.
Sep 22, 2022
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Spring 2022
The Mid-Atlantic region generally experienced slightly wetter than normal conditions. An analysis of projected changes in total monthly precipitation shows that the region is projected to experience an increase in precipitation into the future.
Jun 27, 2022
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Winter 2021-2022
A winter storm caused a traffic backup on Interstate 95 in northern Virginia for more than 24 hours. But despite several winter storms, the region largely received less than normal amounts of snow. Temperatures were generally a few degrees above normal for the season.
Mar 15, 2022
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Fall 2021
Tropical Storm Ida brought significant rainfall and its remnants produced multiple damaging tornadoes. Temperatures were warmer than normal across the region, with moderate drought in southeastern Virginia.
Dec 21, 2021
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Summer 2021
Thunderstorms, tornadoes, and flash floods were among this summer's severe weather events in the Mid-Atlantic region. Read more about regional climate trends, and use the interactive tool to explore historic and future growing degree days.
Sep 20, 2021
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Spring 2021
The Mid-Atlantic region experienced generally warm and dry weather in spring. Use the interactive tool to explore a case study of urban flooding in Pittsburgh, Pennsylvania during current and future climate conditions.
Jun 21, 2021
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Winter 2020-2021
The winter season brought a historic snowstorm to northern parts of the watershed in December; while snow, ice and freezing rain in parts of Virginia and Maryland resulted in widespread power outages in February.
Mar 17, 2021
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Fall 2020
Fall 2020 brought higher than normal temperatures, a wide range of precipitation patterns, and damaging conditions from Hurricane Isaias and Tropical Storm Fay. Use an interactive tool to explore the path of hurricanes reaching Mid-Atlantic states from 1980 to 2020.
Dec 16, 2020
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Summer 2020
The Mid-Atlantic region experienced an active summer season with near-weekly severe storm events and the arrival of Tropical Storm Isaias. Warmer-than-normal conditions brought the hottest summer on record for Norfolk, Virginia, and Harrisburg and Williamsport, Pennsylvania.
Sep 17, 2020
Mid-Atlantic Regional Climate Impacts Summary and Outlook: Spring 2020
In this edition of the quarterly climate summary report, one of the warmest months of March on record was followed by one of the coldest months of April for some parts of the Mid-Atlantic Region, plus explore freeze-thaw cycles in a changing climate.
Jun 19, 2020
Chesapeake Bay Watershed Climate Impacts Summary and Outlook: Winter 2019-2020
An unusually mild winter saw low snowfall levels in the Chesapeake Bay Watershed, and Baltimore's first February without snow in more than a century of recordkeeping.
Mar 23, 2020
Chesapeake Bay Watershed Climate Impacts Summary and Outlook: Fall 2019
A warm and dry September and October turned to a colder-than-usual November in many locations in the Chesapeake Bay Watershed. September 2019 also ranked among the top ten all-time driest months for Baltimore, Maryland and Washington, D.C.
Dec 17, 2019
Chesapeake Bay Watershed Climate Impacts Summary and Outlook: Summer 2019
Summer 2019 brought flash flooding to some parts of the Chesapeake Bay Watershed, while other areas experienced as little as 50 percent of normal rainfall. July was also among the 10 warmest months on record for several locations.
Sep 18, 2019
Chesapeake Bay Watershed Climate Impacts Summary and Outlook: Spring 2019
The spring season saw almost 40 tornadoes touch down across the Chesapeake Bay region, including a record-breaking tally of 16 tornadoes in a single day in Virginia. Spring temperatures were above average for most of the watershed, and some areas experienced rainfall of up to 200 percent of historical averages.
Jun 13, 2019
Chesapeake Bay Watershed Climate Impacts Summary and Outlook: Winter 2018-2019
From December 2018 through February 2019, extreme weather events caused disruptions, delays, and damages within the Chesapeake Bay Watershed. A December snowstorm dropped up to 15.2 inches of snow on western and central Virginia, while a January storm caused more than 250 flight cancellations at Washington D.C.'s three main airports. In late January, a polar vortex resulted in cold, windy weather across the Mid-Atlantic region.
Mar 25, 2019
Chesapeake Bay Watershed Climate Impacts Summary and Outlook for 2018
The first in a seasonal series, this summary draws information from other regional climate centers, news and weather information, regionally-specific climate datasets and the best available science on projected future climate impacts to present useful information for Chesapeake Bay Watershed policymakers, practitioners, residents, and community leaders. This edition also includes an in-depth analysis on multi-decadal changes in extreme precipitation events.
Nov 27, 2018