A Look at Hurricane Edouard's Rapidly Intensification from 2014

news image
Special Stories
11 Nov 2019 2:32 AM
[Hurricane Edouard from 2014. From NOAA via Wikimedia Commons] [NOAA]  In 2014, Hurricane Edouard became the first major hurricane in the Atlantic Ocean since Hurricane Sandy, two years earlier. Thankfully the storm stayed well out to sea, several hundred miles east of Bermuda.  Most tropical cyclones usually weaken when there is a large change in the wind speed or direction with height (wind shear) or when there is dry air in the core. But Hurricane Edouard intensified rapidly under these conditions. A new study used a series of model runs to understand how a hurricane can moisten under these conditions. Important Conclusions from the study:
  • Wind shear can cause the tropical cyclone center to be in different locations with height. When the centers are in the same location with height (what we call alignment), conditions are favorable for rapid intensification. The alignment appears to result from both persistent thunderstorms and the motion of centers at different heights.
  • As rain falls, the water evaporates, moistening the air. After the tropical cyclone becomes more aligned, but before rapid intensification, moisture moves from where the convection is occurring into drier areas in the core. This, and the evaporating rain, helps to moisten the otherwise unfavorable, dry middle layers of the atmosphere.
 
All Weather News
More
Alberto Dissipated in Mexico Thursday Afternoon

Alberto Dissipated in Mexico Thursday Afternoon

As of 4 PM CDT, the National Hurricane Center

20 Jun 2024 9:35 PM
Watching the Tropics: Two Additional Areas of Interest

Watching the Tropics: Two Additional Areas of Interest

In addition to Tropical Storm Alberto, the Na

20 Jun 2024 9:30 PM
Heat Dome Keeps the Northeast Cooking

Heat Dome Keeps the Northeast Cooking

A stubborn ridge of high pressure has left th

20 Jun 2024 9:20 PM
Severe Storms Continue in the Northeast

Severe Storms Continue in the Northeast

Millions of Americans in the Northeast are un

20 Jun 2024 8:40 PM
New Technology Uses Lasers to Measure the Atmosphere

New Technology Uses Lasers to Measure the Atmosphere

Above - The High-Altitude LiDAR Atmospheric S

20 Jun 2024 8:00 AM
Western Wildfires: California and New Mexico Evacuations

Western Wildfires: California and New Mexico Evacuations

RUIDOSO, NM - A fire started burning near the

20 Jun 2024 2:00 AM
Frontal Boundary Pushes East Over Plains

Frontal Boundary Pushes East Over Plains

The Storm Prediction Center has kept a slight

19 Jun 2024 2:40 AM