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>MARISA a NOAA Mid-Atlantic RISA team

Climate and Hazard Primers

The following primers were produced as part of the Mid-Atlantic Climate Impacts Summary and Outlook, a quarterly series that details seasonal weather and climate variability and change in the Mid-Atlantic region. Review the full list of climate summaries.

Hurricanes and Tropical Storms in the Mid-Atlantic
A primer on hurricanes and tropical storms in the Mid-Atlantic, covering historical storm activity, how tropical systems are classified and forecasted, watches and warnings used to communicate risk, storm impacts, and how hurricanes are changing in a warming climate.
Jun 26, 2026
Atlas 15
A primer on NOAA precipitation frequency estimates in anticipation of the Atlas 15 data release.
Mar 18, 2026
Winter Precipitation
This primer describes the common forms of winter precipitation in the Mid-Atlantic region, the purpose of watches and warnings, and how winter precipitation in the region is projected to change in the future.
Dec 16, 2025
Flood Risk
Flooding is a significant and recurring hazard in the Mid-Atlantic region. Understanding the causes, risks, and warning systems associated with flooding is essential for public agencies.
Sep 30, 2025
The Heat Index
Extreme heat is the deadliest weather-related hazard in the United States. This primer describes the heat index calculation, its strengths and limitations, and how it functions in practice.
Jun 30, 2025
Drought Hazard Levels
Drought categories are critical indicators to guide water management, emergency planning, and economic decision-making. This primer provides an overview of how drought categories are developed and what conditions they represent.
Mar 31, 2025
Climate Projections and Future Climate Scenarios
This primer provides an overview of the latest phases of the Coupled Model Intercomparison Project (CMIP) and how MARISA products utilize these datasets.
Apr 5, 2024