Thursday, April 16, 2015

Severe Weather in Tanzania

Tornadoes:
Tornadoes are formed by a rotating body of air from the ground, which is caused by vertical wind sheer. Then a horizontal rotating air is lifted by the thunderstorm's updraft. When the horizontal air mass is lifted almost vertically, it's a mesocyclone. In the U.S. the tornadoes usually travels from southwest to northeast direction. Tornadoes move in that direction because tornadoes move with the same direction as their thunderstorm. Thunderstorms usually move that way in the temperate parts of the northern hemisphere and because of the jet stream moving from west to east. Tornadoes don't usually occur in Tanzania while in 2011, the United States confirmed 1,625 with 93 tornadoes still pending for the month of November and December. Based on the graph below, it appears that tornadoes has increased in number over the past thirty years. This might not be true because it also depends on the technology. In the past 30 years they didn't have as much technology as we did or the data isn't as accurate as it is now.



http://www.ncdc.noaa.gov/climate-information/extreme-events/us-tornado-climatology


Hurricanes:
The three main parts to form a hurricane includes warm ocean temperature of over 80 degrees Fahrenheit. The second part is a deep warm ocean layer in depth because the ocean water will mix and if the bottom layer is cold, when it mixes to the top, the ocean won't be warm enough to create a hurricane. The last part is coriolis to initiate the spinning of the hurricane. My country doesn't meet the needs to create a hurricane because the country is located in the southern part of the Atlantic Ocean where there is a strong wind shear present almost all the time. The main hurricane formation regions are
in the Atlantic and East Pacific called hurricanes, in the Indian Ocean by Australia called cyclones and by China and Indonesia called Typhoons. In the U.S. the general path hurricanes travel is like in a C shape along the east coast. This usually happens because the Hurricane forms over the warm Gulf stream and is steered by the west east flow of the westerlies and jet stream. The hurricane starts to die down when it reaches the cool north Atlantic Ocean. Hurricanes don't usually happen in my country because the location doesn't have a good enough wind shear. The average number of hurricanes that hit the US per year is six.


http://www.numberof.net/number-of-hurricanes-per-year/

Saturday, April 4, 2015

Daily Weather in Tanzania


The city I used for my country's three-day forecast is Dodoma, the capital city of Tanzania. The following forecast will cover the days of April 4, April 5, and April 6. The forecasted high for the first day is 83 degrees Fahrenheit while the low is 66 degrees Fahrenheit. The Precipitation percent for that day is .74 inches. On the second day, the forecasted high is 81 degrees Fahrenheit and the low also being 66 degrees Fahrenheit. Precipitation for the second day is .5 inches. Lastly, the forecasted high on the third day is 84 degrees Fahrenheit with the low being 67 degrees and the precipitation percent of .14 inches. The average pressure over 4/4-4/6 are 69 inches with the pressure increasing and decreasing over time. The average wind speed over the five-day period is 9 mph with the wind speed decreasing over time. 



In this current satellite image of Tanzania, there are a lot of clouds being shown in this picture. Most of the clouds are low, warm clouds being shown as grey and white color s in this image. Also shown on the radar is precipitation in this region. A lot of the precipitation is shown on the top left of the image with heavy purple, pink, green, yellow, and blue colors with a few blue, yellow, green colors scattered across the country. A few vegetation and surface characteristics shown  are mountain range to the right of Dodoma, a lake called Salanga to the left of the capital city, and also Swaga Swaga Game reserve towards the top of the country.



In this zoomed in regional map of Eastern Africa, there are just a few things that I noticed on this map. In this map I see just two 1008 mb. Also shown are actually three 1012 mb. These could be part of isobars of the country with the 1008mb being part of the low pressures and the 1012 part of an isobar. My guess would be that the high pressure areas are at a different park of Africa since the low pressures seem to be shown on the eastern side.



This regional picture is a zoomed out picture of the continent of Africa. In this picture I not only see isobars and pressure points on Africa, but I also see where the isobars are on the ocean and where the possible low and high pressures are. There seems to be a lot of high and low pressure towards the bottom left of the picture. On this picture, it seems to just show 1012mb actually on the land of Africa.