Saturday, February 28, 2015

Hail!

HAIL!


Imagine that you are walking outside one day and all of a sudden, you felt pieces of hard stones hitting your head!  You look up and become amazed.  These hard stones are falling everywhere from the sky!  They are called hailstones.  Hailstones look like balls of ice that can be big or small.  They form in a thunderstorm cloud as tiny drops of water.  When the wind carries these water droplets upward into very cold areas of the atmosphere, they freeze into balls of ice or hailstones. Once the hailstones are formed, very cold air or wind would pull them downward and upward very quickly.  If this continues, the small balls of ice would become bigger and bigger!  It would not have much time to melt and therefore, you get a severe weather condition called HAIL!




These are big hailstones.  Aren’t they pretty?  However… they can grow to the size of a tennis ball or even bigger!

 


Hail can be very dangerous.   This picture is a result of many big and hard hailstones falling onto a car.


Thursday, February 26, 2015

HEAVY RAIN!

Let's talk about Heavy Rainfall...

Heavy rain is usually brought on by a storm.  It can also be called a "shower."  Raindrops fall at a speed from 7 to 18 MPH.  But, if it is windy they will fall faster! According to the The National Climatic Data Center there were 36 reported events of Heavy Rain in the last 20 years. Fortunately, there were no deaths or injuries reported.

In May of 2000, there were 18 reported incidences of Heavy Rain in Richmond County. According to the reports, many farmers are expecting a reduced amount of crops.
(Submitted by Jessica Kochanski)

Wait a second...How is rain formed?

Good thing you asked! Here's a cool song to help you remember:


Did you know?

Raindrops are actually smaller then a centimeter.  They range from 1/100 inch (.0254 centimeter) to 1/4 inch (.635 centimeter) in diameter!
For more fun facts, check out this website! (Submitted by Jetmira)



Flood

FLOOD
Flood is a natural event or occurrence where a piece of land (or area) that is usually dry land, suddenly gets submerged under water. Some floods can occur suddenly and recede quickly. Others take days or even months to build and discharge. Anywhere it rains, it can flood. According to www.FloodSmart.gov  A flood is a general and temporary condition where two or more acres of normally dry land or two or more properties are inundated by water or mudflow. Many conditions can result in a flood: hurricanes, overtopped levees, outdated or clogged drainage systems and rapid accumulation of rainfall. 
           
                                     


                                   

Lightning!


 



What is Lightning? BY ELLAINE PORTILLO

Lightning is a bright flash of electricity produced by a thunderstorm.

 




DID YOU KNOW?
DID YOU KNOW ADDED BY : AMANDA REBECCHI


  • Lightning is one of the leading causes of death and injury in the United States.
  • The odds of being a lightning victim in one year is 1 in 700,000, and in a lifetime is 1 in 3,000.
  • Ice in a cloud could be the key to lightning development.
Lightning can also cause cardiac arrest.




VIDEO BY AMANDA RODRIGUEZ
 
Watch this video: Lightning strikes close right here on Staten Island!
 

Severe Weather Conditions

Severe weather conditions you will investigate:
1. Flash Flood:  Allen Judy, Belaya Yevgenia, Bernstein Sara, Cohn Michelle, Yosef Morin
2. Flood: Cross Alicia, Flack Amanda, Gjenashaj Venera, Gultieri Michael, Ognibene Kristina
3. Hail:Hansen Kimberly, Hillpot Rachel, Huan Lili, Johnson Shantel, Matera Grace
4. Heavy rain: Kochanski Jessica, Korn Michelle, Lobello Teresa, Popovic Jetmira
5. Lightning: Portillo Ellaine, Rebecchi Amanda, Rosa Jennifer, Ryan Kaitlyn, Rodriguez Amanda
6. Thunderstorm Storm:Salinger Julianne, Scharff Ariel, Shea Dana Lynn, Ward Kiara

Notes on procedure:
1. You will work in groups of 3-4.
2. Complete Internet research to learn more about the specific ?severe weather condition assigned to your group.
3. Follow procedure in your lab manual to complete the activity.
4. Post on Severe Weather Blog findings from your research (see instructions on the blog):
- state and severe weather condition assigned to your group. 1st person in group will start the post - title based on the weather condition you are investigating.
 - every person in the group has to add to the post (either comments, more information, pictures, videos, etc.)
- based on your data analysis explain in which two months this weather condition is most likely to happen in this particular state
- provide short narrative about severe weather condition,images and links to URL where we can learn more about this weather condition




Flash Floods

Flash Floods

What are flash floods?(by Michelle Cohn)

According to the National Climate Data Center, flash floods are short-term events which occur within 6 hours of an event such as heavy rain, a dam break, levee failure, snow melting and ice jams. Most often, a flash flood can occur within 2 hours of the start of high intensity rainfall.
A flash flood is characterized by a quickly rising stream with depths of water that can reach well above the banks of the creek. 
Flash floods can cause a lot of damage to the areas they occur in and may even cause death. Damage and most fatalities are likely to occur in areas that are right next to a stream or arroyo. 




More about Flash Floods (by Ms. Bernstein) 

According to the National Oceanic and Atmospheric Administration, Flash floods occur rapidly and are very dangerous. Flash floods can be produced when slow moving or multiple thunderstorms occur over the same area. When storms move faster, flash flooding is less likely since the rain is distributed over a broader area.

This is a great video from Brain Pop about Natural Disasters, which includes Flash Floods- https://www.brainpop.com/science/earthsystem/naturaldisasters/



Flash Floods in Motion! (by Morin Yosef)


Flash Flood Charts and Questions (by Morin Yosef)

Here are two charts with data that was collected from the National Climatic Data Center Website  
These charts show information about Flash floods that occurred in the last 20 years in Staten Island (Richmond County) New York. Which month had the most flash floods? 






Which year has the most floods?
Which year had the least flash floods? If there is more than one year, please list all that show the least amount of flash floods.






Can flash floods happen where you live? (by Jane Belaya)

According to the National Climatic Data Center, in the last twenty years, Richmond County has only had twenty nine flash flood reports in only two areas of the county. The most recent event happened on June 13th, 2014 and lasted a little over seventeen minutes.

The flash flood occurred after an approaching cold front triggered a line of thunderstorms that produced heavy rain and resulted in flash flooding in portions all over New York City. In Richmond county, the ramp from Lily Pond Ave. to the lower level of the Brooklyn bound Verrazano Bridge was closed due to flooding. 

Since the most recent flash flood event occurred in June and over the last twenty years, the most flash floods have happened during June and July; it can be predicted that during the warmer months, a flash flood could be occur after heavy periods of rain.




How much damage can flash floods cause? (by Judy Allen)

According to the environment national geograpic.com in the United States flood do about 6 million dollars worth of damage and kill about 140 people each year. A 2007 report by the Organization for Economic Cooperation and development found that coastal flooding alone does some $3 trillion in damage worldwide