Many people are surprised by how frequently New Hampshire experiences heat waves.
On average, cities like Manchester and Concord have seen multiple days with temperatures soaring to 90 degrees or higher.
This summer has been particularly intense, with Manchester recording 23 days above 90 degrees already. Concord, meanwhile, has hit 90 degrees or more on 16 days, surpassing the usual average of 13 days.
The increasing number of heat waves is raising concerns about climate change.
July 2024 has shown a record-breaking heat wave, highlighting how climate patterns are shifting.
For New Hampshire residents, it’s becoming crucial to adapt to these rising temperatures during the summer months.
With extended strings of sweltering days, staying cool and safe is more important than ever.
Heat waves in New Hampshire are not just a concern for comfort but can also impact health and safety.
The state’s 911 system received more calls related to heat in a few days than in the entire month of June last year.
As temperatures continue to climb, it’s essential to understand how these changes affect daily life.
Characteristics and History of New Hampshire Heat Waves
New Hampshire’s history with heat waves reveals patterns of extreme temperatures, particularly in cities like Manchester and Concord.
This section dives into what defines these heat waves, historical temperature trends, and record-high temperatures in the state.
Defining Heat Waves
Heat waves in New Hampshire are defined by prolonged periods of high temperatures, usually 90°F (32°C) or higher.
These events typically occur in late July and August.
According to the National Weather Service, a heat wave is a period of abnormally hot weather lasting at least two days.
Manchester, being one of the most populous cities, frequently experiences these conditions.
The heat is particularly intense in urban areas due to the density of buildings and roads, which trap heat more effectively than rural areas.
Historical Temperature Trends
Manchester and Concord have seen a notable rise in the number of 90-degree days over the years.
Historically, these cities recorded fewer instances of extreme heat. However, an increase has been observed recently.
For instance, Manchester experienced 23 days of 90-degree heat so far this year.
Concord, on the other hand, traditionally averages 13 days of such temperatures annually but has already hit 16 days this year.
This uptick is consistent with broader national trends reported by the EPA, which shows increased frequency and duration of heat waves across the U.S.
Record-High Temperatures
Record-high temperatures in New Hampshire have been largely documented in recent years.
The ongoing shifts in climate patterns contribute significantly to these extremes.
For instance, a record-breaking heat wave in July 2024 saw communities enduring the longest strings of sweltering days recorded in recent history.
Communities are experiencing unprecedented highs, with some areas hitting temperatures never seen before.
These extreme temperatures have far-reaching effects, impacting everything from public health to local agriculture.
According to reports, such heat waves are becoming more frequent, making historical records an important metric for predicting future trends.
Preparation and Response to Heat Waves
New Hampshire experiences increasingly frequent and intense heat waves. Effective preparation and response strategies are crucial to minimizing heat-related health risks, especially for vulnerable populations.
Protecting Vulnerable Populations
Seniors and individuals with chronic heart conditions are particularly at risk during heat waves.
Centers for Disease Control and Prevention (CDC) guidelines recommend checking on neighbors and family members who are elderly or have health issues.
Cooling centers and cooling shelters provide vital relief during extreme summer heat.
These locations must be accessible and well-publicized, especially in areas with a higher density of urban buildings.
Financial hardship can exacerbate heat risks.
Programs like Low-Income Home Energy Assistance Funding (LIHEAP) help cover cooling costs for low-income residents, allowing more families to keep their homes cool safely.
Community Cooling Initiatives
Community cooling centers offer an essential refuge from high temperatures.
These spaces can be schools, libraries, or community centers that provide air-conditioned environments.
Organizations like the Environmental Protection Agency (EPA) promote creating greenspace in urban areas.
Planting trees and maintaining parks can significantly reduce temperatures.
Green roofs and urban planning that incorporates natural shading elements can also help keep communities cooler.
Local health departments should have an excessive heat plan, like New Hampshire’s 2014 plan, which outlines emergency response strategies during extreme heat.
Public awareness campaigns through various media can inform residents about the locations of cooling centers and other resources.
Infrastructure and Environmental Measures
Modern infrastructure must adapt to changing climate conditions. Upgrading urban buildings with better insulation and reflective materials can reduce heat absorption.
The construction of more greenspace helps lower overall urban temperatures.
Utility companies, regulated by entities like the New Hampshire Public Utilities Commission, can plan for increased electrical demand during heat waves. This involves ensuring a reliable power supply for air conditioning systems.
In addition to providing immediate relief, long-term environmental measures like better water management and infrastructure improvements can mitigate the impact of heat waves.
Collaborating with regional planners and environmental experts ensures that cities are better prepared for future heat events.