December weather west virginia – Kicking off with December weather in West Virginia brings attention to the significant climate variations that occur throughout the month. The state’s geographical location and topography play a crucial role in shaping its weather patterns, resulting in diverse temperature ranges and precipitation levels. From moderate winters to significant snowfall events, December’s weather in West Virginia showcases nature’s unpredictability.
Diving deeper into the specifics, historical climate data for December reveals notable fluctuations in average temperatures over the past few decades. Total precipitation levels and the number of snowfall days have also been observed to be affected by various factors, including atmospheric pressure systems and wind patterns. Furthermore, the relationship between snowfall and precipitation patterns is a pivotal component in determining the overall climate conditions in December West Virginia, impacting river flow, ground frost, and total precipitation totals.
Identifying Cold Snap Events in December West Virginia: December Weather West Virginia
December in West Virginia is known for its cool and sometimes chilly weather, with average high temperatures ranging from the mid-40s to low 50s Fahrenheit (7-12°C). However, every now and then, the region experiences cold snap events, which bring a significant drop in temperatures, sometimes even below freezing. These events are often a result of atmospheric pressure systems and wind patterns that bring cold air from Canada or other parts of North America.
A hypothetical cold snap scenario that occurred in a previous December in West Virginia can be explained by analyzing the atmospheric conditions that led to this event. One such scenario took place in December 2017, when a strong high-pressure system from Canada moved southward into the eastern United States, bringing extremely cold air with it. This high-pressure system was accompanied by a strong northerly wind that pushed the cold air southward, resulting in a significant drop in temperatures across the region. The temperature in some areas dropped to as low as 15°F (-9°C), causing widespread disruptions and power outages.
Atmospheric Pressure Systems and Wind Patterns
Atmospheric pressure systems play a crucial role in shaping the weather patterns in West Virginia. The movement of high and low-pressure systems affects the temperature and wind direction, which in turn impact the overall climate conditions in the region. In the case of a cold snap event, a strong high-pressure system from Canada moves southward into the eastern United States, bringing cold air with it. This high-pressure system is usually accompanied by a strong northerly wind that pushes the cold air southward, resulting in a significant drop in temperatures.
Cold Snap Event vs. Overall Climate Conditions in December West Virginia
A cold snap event can have both positive and negative effects on the overall climate conditions in December West Virginia. While it brings a much-needed respite from the cold temperatures, it can also cause disruptions and power outages. Here are some key differences and similarities between a cold snap event and the overall climate conditions in December West Virginia:
- Temperature: Cold snap events bring a significant drop in temperatures, sometimes even below freezing, while the overall climate conditions in December West Virginia are known for cool and sometimes chilly weather, with average high temperatures ranging from the mid-40s to low 50s Fahrenheit (7-12°C).
- Wind direction: Cold snap events are often accompanied by a strong northerly wind that pushes the cold air southward, while the overall climate conditions in December West Virginia are characterized by a mix of southerly and northeasterly winds.
- Disruptions: Cold snap events can cause widespread disruptions, including power outages and road closures, while the overall climate conditions in December West Virginia are generally mild and do not pose significant disruptions.
- Impact on local economy: Cold snap events can have a negative impact on the local economy, especially on farmers and outdoor industries, while the overall climate conditions in December West Virginia are generally beneficial for the local economy.
Comparison of Temperature Ranges
Here’s a comparison of the temperature ranges during a cold snap event and the overall climate conditions in December West Virginia:
| Time of Year | Temperature Range (Fahrenheit) |
| Cold Snap Event (December 2017) | 10°F (-12°C) – 20°F (-7°C) |
| Overall Climate Conditions (December West Virginia) | 40°F (4°C) – 50°F (10°C) |
Impact on Local Flora and Fauna
The impact of a cold snap event on local flora and fauna can be significant. The sudden drop in temperatures can cause stress and even death in some plant and animal species. Here are some examples of the impact of cold snap events on local flora and fauna:
- Plant species: Cold snap events can cause damage to plant species, especially those that are sensitive to cold temperatures. This can result in a shortage of food for herbivores and other animals.
- Animal species: Cold snap events can cause stress and even death in animal species, especially those that are sensitive to cold temperatures. This can result in a decline in the population size and potentially even lead to extinction.
Influence of El Niño and La Niña Events on December West Virginia Weather
El Niño and La Niña events are natural climate phenomena that occur in the Pacific Ocean and impact global weather patterns. These events have significant effects on temperature, precipitation, and snowfall in West Virginia during December, shaping the region’s climate conditions.
El Niño events are characterized by warmer-than-average sea surface temperatures (SSTs) in the Eastern Pacific Ocean. These warmer temperatures influence atmospheric circulation patterns, leading to increased precipitation and temperature anomalies in West Virginia. The warmer atmosphere is conducive to heavier rainfall and milder temperatures, reducing the likelihood of severe cold snaps.
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Temperature Anomalies during El Niño Events
- El Niño events tend to lead to milder temperatures in December, with average winter temperatures 2-5°F above normal.
- The increased moisture from the warmer ocean evaporation contributes to more frequent winter precipitation events.
- Rainfall and snowfall totals tend to be above normal, with some areas receiving 20-30% more precipitation than during non-El Niño winters.
La Niña events, on the other hand, are marked by cooler-than-average SSTs in the Eastern Pacific. These cooler temperatures impact atmospheric circulation patterns, leading to drier and colder conditions in West Virginia. The reduced moisture availability reduces precipitation, making severe cold snaps more likely.
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Temperature Anomalies during La Niña Events, December weather west virginia
- La Niña events often lead to colder temperatures in December, with average winter temperatures 2-5°F below normal.
- The reduced moisture availability contributes to fewer winter precipitation events, leading to drier conditions.
- Some areas may experience 10-20% lower rainfall and snowfall totals than during non-La Niña winters.
The effects of El Niño and La Niña events on West Virginia’s December weather are a result of shifting atmospheric circulation patterns. During El Niño events, a more meridional (north-south) flow is established in the upper troposphere, contributing to warmer temperatures and increased precipitation. The opposite is true during La Niña events, where a more zonal (west-east) flow is common, leading to colder temperatures and reduced precipitation.
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Ambient Pressure Systems and Circulation Patterns
The differences in atmospheric circulation pattern are attributed to variations in the pressure systems. During El Niño, the Pacific-North American (PNA) teleconnection pattern weakens, whereas the North Atlantic Oscillation (NAO) strengthens. The converse occurs during La Niña.
Figure 1. El Niño and La Nina circulation pattern comparisons:
El Niño: Reduced PNA teleconnection, Strengthened North Atlantic Oscillation (NAO)
La Niña: Reduced North Atlantic Oscillation (NAO), Strengthened PNA teleconnection
Understanding the influence of El Niño and La Niña events on December West Virginia weather has significant implications for agriculture, winter recreation, and climate-related planning. Farmers can anticipate warmer temperatures and increased precipitation during El Niño events, while residents should prepare for colder temperatures and potential severe cold snaps during La Niña events.
Final Review
In conclusion, December weather in West Virginia is characterized by a complex array of factors, including geographical influences, temperature fluctuations, and precipitation patterns. El Niño and La Niña events have a notable impact on the state’s climate conditions, with variations in temperature, precipitation, and snowfall observed throughout the month. As the weather evolves over the coming years, it is essential to stay informed about the latest climate trends and patterns to better understand and adapt to the changing environment.
FAQ Resource
Q: What is the average high temperature in December West Virginia?
A: According to historical climate data, the average high temperature in December West Virginia ranges between 48°F and 54°F (9°C and 12°C).
Q: How much snowfall can we expect in December West Virginia?
A: December is one of the snowiest months in West Virginia, with an average of 10-12 inches (25-30 cm) of snowfall.
Q: Does El Niño affect weather in West Virginia?
A: Yes, El Niño events tend to bring warmer and drier conditions to West Virginia during the winter months, whereas La Niña events are associated with cooler and wetter conditions.
Q: What is the typical wind pattern in December West Virginia?
A: In December, West Virginia is typically affected by a westerly wind pattern, which brings cold air from Canada and the Great Lakes region.
