Introduction
Throughout history, weather has had an impact on military operations, affecting everything from personnel movements and maritime operations to communications and logistics. But in the present day, weather is more than just a factor on the battlefield. Weather has become a major national security issue that may impact combat readiness, manpower, infrastructure, and operational effectiveness due to increasingly harsh climatic circumstances. Significant Department of War (DoW) operations have been disrupted by hurricanes, wildfires, droughts, flooding, intense heat, and winter storms. As environmental hazards grow more common and expensive, leadership throughout the DoW must consider weather intelligence as a crucial part of operational planning and risk management. Although weather forecasts have traditionally been used by military planners in tactical decision-making, the significance of weather intelligence has grown beyond traditional forecasting due to the increasing frequency and severity of environmental dangers.[1],[2]
Weather intelligence has become increasingly important because it enables DoW leadership at all levels to anticipate risks before they affect operations. By integrating environmental information into planning processes, military organizations can improve readiness, allocate resources more effectively, and reduce vulnerability to environmental disruptions. Rather than reacting to disasters after they occur, military planners can use weather intelligence to implement preventive measures that protect personnel, infrastructure, and operational capabilities. As environmental threats continue to evolve, weather intelligence will play a critical role in maintaining operational effectiveness and strategic resilience.[3],[4]
A more useful approach is to treat weather intelligence as an analytic workflow rather than a passive forecast, combining short-range forecasts, seasonal outlooks, historical climatology, installation exposure data, mission-essential functions, and preestablished decision thresholds into actionable indicators and warnings. In practice, that means leadership can use forecast confidence and hazard thresholds to stage generators and fuel, protect aircraft and vehicles, adjust port or road movements, modify training schedules, establish heat work-rest cycles, prepare evacuation support, and sequence post-event damage assessments before conditions deteriorate.[5],[13]
Weather Impacts on Department of War Installations
DoW installations offer command and control functions, force projection capabilities, logistics support, training facilities, and maintenance capabilities. As a result, environmental risks may have far-reaching effects on them. Installation damage can impair preparedness, postpone deployments, and raise operating expenses.[3]
Installation risk is best understood as a network problem rather than a simple facility-damage problem. Even when mission buildings are hardened, operations can be degraded by failures in off-installation electric power, water and wastewater systems, fuel delivery, telecommunications, medical access, housing, bridges, ports, airfields, or the road network that personnel and contractors rely upon to reach the installation. The United States Government Accountability Office (GAO) has also emphasized that DoW installation management is challenged by weak data, deferred maintenance, and environmental liabilities, making consistent, decision-quality hazard intelligence more important for prioritizing mitigation dollars and protecting mission assurance.[6]
Hurricanes, storm surges, sea level rise, and floods pose significant dangers to coastal infrastructures. Myriad significant air bases, shipyards, and naval installations are situated close to shorelines. Although these sites offer strategic advantages, they also put vital infrastructure at risk from the environment. Concerns about the long-term sustainability of some coastal military installations have increased due to rising sea levels and more powerful storms. The DoW is paying more attention to resilience planning and infrastructure adaption initiatives as a result of these threats.[2],[7]
Hurricane Michael’s effects on Tyndall Air Force Base in 2018 provide a stark illustration of how susceptible military sites are to severe weather. Aircraft hangars, maintenance facilities, residential areas, and operational infrastructure all sustained significant damage during the storm. Years of reconstruction and billions of dollars were necessary for recovery. Military preparedness and force projection capabilities will likely be impacted by similar incidents at other installations, especially if vital facilities are unavailable during times of increased operational demand. Another major problem for military sites is flooding. Transportation networks, fuel storage facilities, communications infrastructure, and electrical systems may all be harmed by even mild seasonal flooding. These systems play a critical role in supporting both daily operations and mission execution in the military. Because of this, flooding incidents may cause operational complications that last long after the immediate threat has subsided. These effects highlight how crucial it is to include environmental risk assessments in infrastructure development and upkeep initiatives.[3]
The Tyndall example is especially useful because it demonstrates how a weather event can create a long-duration readiness problem rather than a short-term cleanup requirement. Tyndall Air Force Base reports that Hurricane Michael damaged 484 buildings and required removal of 792,450 cubic yards of debris, forcing a large-scale rebuild effort and the creation of a more formal natural-disaster recovery capability. This type of impact illustrates why weather intelligence must feed continuity planning, alternate operating locations, facilities investment, insurance of critical records, communications redundancy, and recovery contracting before a storm makes landfall.[8]
In the western U.S., military sites are also increasingly at risk from wildfires. The frequency and intensity of wildfires have risen due to prolonged drought conditions, rising temperatures, and altered precipitation patterns. Large tracts of undeveloped ground are frequently included in military training ranges, rendering them vulnerable to wildfire activity. Fires have the potential to harm infrastructure, restrict access to training facilities, deteriorate air quality, and endanger worker safety. These interruptions may limit training chances and have a detrimental impact on military groups’ preparedness.[9]
For wildfire-prone installations, useful weather intelligence should track more than fire occurrence. It should integrate fuel dryness, wind shifts, relative humidity, red-flag conditions, lightning potential, smoke patterns, evacuation routes, live-fire or range restrictions, and air-quality impacts that can limit training even when flames never reach the installation fence line. This allows commanders to distinguish between direct burn risk, smoke-related personnel risk, access-route risk, and mission-delay risk.[9],[13]
Effects on Personnel and Readiness
Infrastructure and military personnel are both impacted by environmental risks. The physical and emotional health of military personnel is a major factor in readiness, and unfavorable weather can have a significant impact on both. Service members are increasingly exposed to environmental hazards that test their physical stamina and cognitive abilities as temperatures increase and extreme weather events become more frequent.[2]
Extreme heat is among the greatest environmental risks personnel face. Elevated temperatures lower physical performance, delay or disrupt training, and raise the risk of heat-related injury. According to research, employees working in stressful situations may experience increased weariness, decreased response times, and cognitive impairment as a result of heat stress. Both during training and actual operations, these factors may have an impact on mission performance and raise operational risk. These interruptions have the potential to complicate deployment timetables and impact unit preparedness over time. Military organizations will need to be more adaptable and flexible to maintain preparedness in increasingly difficult environmental situations. Environmental risks can also have an impact on DoW personnel and their dependents’ quality of life and morale. After significant weather disasters, service members and their families living on installations may encounter housing shortages, evacuations, electricity outages, and property damage. These difficulties can put additional strain on those already in charge of maintaining operational readiness. DoW leadership at all levels must remain aware of the effects of weather on personnel welfare and organizational resilience as environmental disturbances grow more frequent.[10],[11]
Extreme heat planning also demonstrates the difference between raw weather data and operational intelligence. Temperature alone is insufficient. Planners need heat index, wet-bulb globe temperature, solar exposure, acclimatization status, workload, protective equipment, hydration logistics, casualty trends, and medical-response time. When those factors are converted into thresholds for work-rest cycles, training modifications, shade placement, water distribution, and medical standby, weather intelligence directly reduces preventable injuries while preserving training value.[10],[11],[13]
Operational and Strategic Implications
Environmental risks have operational ramifications that go well beyond specific sites. Interconnected systems that facilitate logistics, communications, transportation, and deployment are essential to modern military operations. When a given part of this network is disrupted, it can have a domino effect on the entire force. Environmental risks may have an impact on performance at both the operational and strategic levels. Environmental disturbances are also a threat to logistics. Severe weather can cause supply chain disruptions, port closures, damage to transportation infrastructure, and delays in the movement of equipment and personnel. Both locally and internationally, military preparedness may be impacted by these disturbances. Even very brief outages might pose serious operational issues since military operations significantly rely on timely logistics assistance.[2],[13]
At the operational level, weather intelligence should be integrated into critical information requirements, priority intelligence requirements, logistics planning, common operating pictures, and exercise design. DoW budget materials for FY 2024 identified investments tied to installation resilience, climate impacts on installations and missions, black-start exercises for installation power systems, wargames and simulations, and weather-service capabilities. Those investments underscore that weather intelligence is not simply an environmental staff function but part of operational risk management, continuity of operations, power resilience, and theater campaign planning.[5],[13]
The need for military assistance during domestic crises is also heightened by weather-related incidents. National Guard units are often activated during hurricanes, floods, wildfires, and other disasters. These missions put additional strain on military resources even while they offer crucial assistance to civilian authorities. The availability of forces for conventional military operations may be impacted by disaster response operations, potentially exacerbating global security issues and geopolitical instability. Food insecurity, resource competitiveness, relocation, and humanitarian disasters can all be made worse by environmental hazards, affecting regional stability. Weather intelligence is crucial for both operational planning and installation management as well as for comprehending more general security patterns that might impact national interests.[9]
Outlook
Weather has evolved from a tactical to a strategic consideration that may affect national security, human welfare, infrastructure resilience, and military preparedness. For DoW service branches tasked with sustaining operational effectiveness, environmental disasters present additional obstacles. Maintaining preparedness and safeguarding vital military capabilities requires an understanding of these risks.[2],[9]
The domestic cost environment reinforces this point. NOAA’s billion-dollar disaster dataset recorded 27 confirmed U.S. weather and climate disaster events in 2024 alone, including severe storms, tropical cyclones, flooding, wildfire, drought, winter storm, and freeze events. For military planners, that scale of recurring disruption means weather intelligence should be treated as a recurring readiness requirement rather than an episodic emergency-management product.[12]
Weather intelligence serves as a force multiplier because it enables military leaders to anticipate environmental threats, improve decision-making, and reduce operational risk. Through enhanced situational awareness, predictive analysis, and environmental monitoring, weather intelligence helps protect critical infrastructure, preserve readiness, and supports mission success. The ability to anticipate environmental disruptions provides military organizations with a significant advantage when planning and executing operations.[3]
Military organizations will increasingly depend on weather information to manage operational difficulties and preserve strategic advantage as environmental circumstances continue to change. In the coming decades, maintaining military effectiveness and resilience will continue to depend on the capacity to recognize, predict, and address environmental risks. Investments in intelligence integration, resilience planning, and environmental awareness will assist guarantee that armed personnel can continue to carry out their tasks despite increasing environmental uncertainties.[3],[13]
[1] Nevitt, M. (2023). Climate change and the law of national security adaptation. Northwestern University Law Review Online. Retrieved from https://northwesternlawreview.org/articles/climate-change-and-the-law-of-national-security-adaptation/
[2] U.S. Department of Defense, Office of the Under Secretary of Defense for Policy. (2021). Department of Defense climate risk analysis. Retrieved from https://www.war.gov/News/News-Stories/Article/article/2818343/dod-analysis-highlights-geostrategic-risks-of-climate-change/.
[3] U.S. Department of Defense, Office of the Under Secretary of Defense for Acquisition and Sustainment. (2024). Department of Defense 2024-2027 climate adaptation plan. Retrieved from https://www.sustainability.gov/pdfs/dod-2024-cap.pdf.
[4] Pesicka, E. (2025, February 12). Building resilience: Closing the climate knowledge gap in the U.S. military. Small Wars Journal. Retrieved from https://smallwarsjournal.com/2025/02/12/building-resilience-closing-the-climate-knowledge-gap-in-the-u-s-military/.
[5] U.S. Department of Defense. (2023). Enhancing combat capability: Mitigating climate risk. Retrieved from https://comptroller.defense.gov/Portals/45/Documents/defbudget/FY2024/ PB_FY2024_ECC-Mitigating_Combat_Capability.pdf.
[6] U.S. Government Accountability Office. (2023). Installation management: DOD needs better data, stronger oversight, and increased transparency to address significant infrastructure and environmental challenges (GAO-23-106725). Retrieved from https://www.gao.gov/products/gao-23-106725.
[7] Brosig, M., Frawley, P., Jahn, M., Marsicek, M., Rose, M., Shambaljamts, A., & Thoms, N. (2019). Implications of climate change for the U.S. Army. United States Army War College. Retrieved from https://climateandsecurity.org/wp-content/uploads/2019/07/implications-of-climate-change-for-us-army_army-war-college_2019.pdf.
[8] Tyndall Air Force Base. (n.d.). Rebuild. U.S. Air Force. Retrieved from https://www.tyndall.af.mil/ News/Rebuild/.
[9] NOAA National Centers for Environmental Information. (2025, January 10). Assessing the U.S. climate in 2024. NOAA. Retrieved from https://www.ncei.noaa.gov/news/national-climate-202413.
[10] Parsons, I., Stacey, M., & Woods, D. (2019, December 17). Heat adaptation in military personnel: Mitigating risk, maximizing performance. National Library of Medicine. Retrieved from https://pmc.ncbi.nlm.nih.gov/articles/PMC6928107/
[11] Moran, D., DeGroot, D., Potter, A., & Charkoudian, N. (2023, May 18). Beating the heat: Military training and operations in the era of global warming. National Library of Medicine. Retrieved from https://pmc.ncbi.nlm.nih.gov/articles/PMC10281783/
[12] NOAA National Centers for Environmental Information. (2025). U.S. billion-dollar weather and climate disasters [Data set]. NOAA. Retrieved from https://www.ncei.noaa.gov/access/billions/.
[13] Department of the Air Force. (2025). Air Force Doctrine Publication 3-59: Weather operations. U.S. Air Force. Retrieved from https://www.doctrine.af.mil/Portals/61/documents/AFDP_3-59/3-59-AFDP-WEATHER-OPS.pdf.