Hurricane Matthew: How to follow the storm like a true weather geek
Web Culture · Sex & Relationships · Celebrities · Memes · Parenting · Social Media . In general, the lower the pressure, the stronger the storm. from a combination of the storm's onshore winds and low atmospheric pressure. References to the storm's wind speed always refer to the maximum sustained. Contour plot of wind speeds in a modeled hurricane. . How does the ” Deplorables” meme even fit into this discussion? of winds in the late s- early s, when the MSLP/max wind relationship they were using was poorly chosen. .. I'm going to start talking up central air pressure in the future. Wind and waves There is a direct relationship between the speed of the wind and H! h wave ~ qrnw wavu. ml in; to roll. meme high waves wiin:vuhanglng (rests. Atmospheric pressure by itself has little significance in weather forecasting.
Hurricane Matthew's mile-per-hour or greater winds will act as a buzzsaw, tearing apart buildings and rendering some areas "uninhabitable for weeks or months," according to the National Weather Service. Hurricane Matthew could render areas 'uninhabitable for weeks' If you are trying to follow the storm closely, there are a wealth of resources online that true weather geeks, including me, turn to for data.
Here are a few off the best ones, as well as terminology to look out for and what it means. Terms to know When forecasters talk about the storm's minimum central air pressure, they're doing so because it is a key way to measure the intensity of the storm. In general, the lower the pressure, the stronger the storm. As of 11 a. ET on Thursday, the hurricane had a minimum central pressure of millibars.
To put this reading into perspective, only six hurricanes have ever made landfall in Florida with a pressure below millibars. These storms are the ones highlighted in meteorological history books, including the Labor Day Hurricane, Hurricane Andrew and Hurricane Donna.
When forecasters refer to the hurricane's storm surge, they are talking about the rise in water that occurs from a combination of the storm's onshore winds and low atmospheric pressure. The storm surge is expected to cause inundation of coastal areas of 9 feet or more in some spots in northern Florida, meaning that 9 feet or more of water will cover typically dry land if the storm hits at the time of high tide.
Blizzard 'Bomb' Wallops Cape Cod, Maine, and Canadian Maritimes
References to the storm's wind speed always refer to the maximum sustained winds observed in the storm, although higher gusts are likely to occur. Lastly, the storm's "eye wall" refers to the towering thunderstorms that surround the hurricane's eye, and which contain the fiercest winds and often the heaviest rain as well. Typically, the strongest winds are found in the northeastern side of the eye wall for a storm moving from south to north, like Hurricane Matthew.
Online resources Here are some helpful online resources I turn to for covering hurricanes here at Mashable. National Hurricane Center This is the official source of all hurricane forecasts, watches and warnings. Check here often for updates about Hurricane Matthew, and links to local NWS offices' statements for their specific area. Levi Cowan's Tropical Tidbits website This is the website to turn to to find out what the Hurricane Hunter aircraft are finding in the storm, live, as the planes are in the air.
It is also great for computer model simulations of the storm, at no charge. Just be sure to remember that each model is a projection of the storm, not an actual forecast.
Some prefer visible loops, while others like colorful infrared displays. A microburst is a vertical pressure gradient caused by existing dry air beneath or entering the thunderstorm. Rain evaporates in this dry air causing cooling. Cool air is denser, thus creating higher-pressure air that plunges to the surface. Sciencing Video Vault Geographic Scale The high to low force that causes wind and its' velocity works on synoptic scales such as those depiction on conventional surface maps.
Gradients can also occur on scales much smaller than the high and low systems associated with middle latitude thunderstorms. Cool air is denser, thus creating higher pressure air that plunges to the surface.
Precise Relationship Wind velocity is determined by pressure gradient, so what magnitude of gradient corresponds to a certain wind velocity?
According to The Weather Book by Jack Williams, a "half pound per square inch pressure difference between places miles apart will accelerate still air to an 80 mph wind in three hours. This is difficult to be precise because other factors such as friction, the Coriolis effect, and "spin out" and latitude affect speed.
An example from metservice.
Downward vertical motion can happen with low flowing to high.