Blizzard vs Snow Squall 暴風雪 vs. 雪暴

blizzard vs Snow Squall 暴風雪 vs. 雪暴 /skwɔːl/

Prompt: Elaborate
"blizzard" vs "Snow Squall"

#ChatGPT give the follwing answer:

暴風雪 vs. 暴雪陣(雪暴)

暴風雪(Blizzard)

定義:持續時間長、風勢強勁且能見度極低的嚴重降雪天氣。

持續時間:數小時至數天。

風速:持續風速或陣風達 35 英里/小時(56 公里/小時) 或以上。

能見度:因降雪或吹雪導致能見度低於 ¼ 英里,且持續 至少三小時

降雪量:可能降雪量大,但暴風雪不一定伴隨新降雪,強風可捲起地面積雪造成白茫茫的環境。

影響:嚴重影響交通,可能導致停電,極端低溫會造成危險情況。

暴雪陣/雪暴(Snow Squall)

定義:短暫但強烈的降雪伴隨強風,迅速導致白茫茫的低能見度。

持續時間:通常30 分鐘至 1 小時

風速:風勢強勁,但不像暴風雪那樣持續。

能見度:短時間內能見度可能降至接近零

降雪量:降雪猛烈,可在短時間內積雪,導致道路濕滑危險。

影響:對駕駛影響巨大,能見度與路面狀況迅速惡化,但整體影響範圍較小,不如暴風雪持久。

主要差異

特徵 暴風雪 暴雪陣(雪暴)

持續時間 數小時至數天 數分鐘至 1 小時

風速 持續 35+ 英里/小時 強風但不持續

能見度 <¼ 英里,持續 3+ 小時 迅速降至接近零

降雪量 可能大降雪或吹雪 短時間內強降雪

影響 影響廣泛,造成嚴重危害 主要影響交通,短暫但危險

 

簡單來說,暴風雪是長時間、大範圍的惡劣天氣,而暴雪陣(雪暴)則是突發、短暫但影響劇烈的降雪天氣。

A blizzard and a snow squall are both winter weather events involving snow and strong winds, but they differ in intensity, duration, and overall impact.

Blizzard

A blizzard is a prolonged and severe winter storm characterized by:

  • Sustained winds of at least 35 mph (56 km/h)
  • Heavy or blowing snow, reducing visibility to ¼ mile or less
  • Duration of at least 3 hours

Blizzards often cause extreme cold, hazardous travel conditions, and power outages. They can cover large areas and last for hours or even days.

Snow Squall

A snow squall is a short but intense burst of heavy snow and strong winds, usually lasting less than an hour but creating dangerous conditions, such as:

  • Rapidly reduced visibility due to heavy snowfall
  • Gusty winds that cause blowing snow
  • Sudden and drastic temperature drops
  • Quick snow accumulation, making roads slippery and hazardous

Snow squalls are localized and more akin to a “flash snowstorm,” often causing whiteout conditions that lead to dangerous driving situations.

Key Differences

FeatureBlizzardSnow Squall
DurationHours to daysMinutes to an hour
Wind Speed35+ mphStrong, gusty
Snowfall RateModerate to heavyVery heavy but brief
Visibility¼ mile or lessNear zero at peak intensity
Coverage AreaLarge (regional or multi-state)Small (localized)
Hazard TypeProlonged severe conditionsSudden whiteout & icy roads

Which is More Dangerous?

  • Blizzards are more dangerous in the long term due to prolonged exposure, risk of hypothermia, infrastructure damage, and travel shutdowns.
  • Snow squalls can be deadlier in the short term because they can catch drivers off guard, leading to multi-vehicle pileups.

Would you like more details on how to prepare for either event?