Wednesday, March 13, 2013

Wacky Weather: Comet PanSTARRS

Comet PanSTARRS has been making its way past earth for the past couple of weeks, and just recently has become visible in the Northern Hemisphere. And don't worry it is a good 100 million miles away, but in space that means it close enough to see here on earth. I found a video time lapse of the comet sighting in Arizona.
 
There is a another chance to see Comet PanSTARRS tonight, low in the west after sunset near the moon. I found a photo to help you find the comet, remember make sure that trees and tall buildings are not in your way.
Let the waxing crescent moon be your guide to the Comet PANSTARRS on Wednesday, March 13.

Also if you don't get a chance to see this comet, there is a chance to see another comet later this year!! Get excited!! 
 
Photo/Video From:
earthsky.org
youtube.com

Tuesday, March 12, 2013

Forecasting 101: All About Hail

I thought that will severe weather season just around the corner for most of us that I would tell you about hail. Hail is a really neat weather phenomenon. Hail is formed when small water droplets are caught in the updraft of a thunderstorm. Before I go any further, I want to teach you about what an updraft is. Refer to the figure below of a basic thunderstorm anvil. Both the updraft and the downdraft are essential parts of a thunderstorm, without them the thunderstorm would not exist or would be weakening significantly.

Now we have water droplets caught by the warm updraft, these particles are lifted high within the cloud until they are frozen. The now ice particles descends, however, if the melting ice particle descends near the updraft they can be once again lifted high within the cloud and will refreeze. This process will continue to occur until the updraft cannot support the weight of the ice particle, also known as hail, at this time the hail will fall to the ground.

I want you to think about how strong the winds have to be within a cloud to support the growth of some of the hail that has been recorded. For example, the largest hailstone recorded to date is 8 inches in diameter and weighs almost one pound! This means that the updraft speed had to be somewhere around 200 miles per hour. That is one severe storm!!


One side note, if you ever are taken pictures of hail (which I know you all do! ha) make sure you put something in the picture like a quarter. It's actually super hard to tell how large a hail stone is without a visual comparison. 

Sorry this one is late the rain storm this morning made my wifi super slow. 

Photo From:
wximpact40-88.pbworks.com
Meteorologynews.com

Monday, March 11, 2013

Myth: No weather is ill, if the wind is still

Myth: There will be no "bad" weather, if the wind is still.
http://cmsimg.mansfieldnewsjournal.com/apps/pbcsi.dll/bilde?Site=B7&Date=20121228&Category=NEWS01&ArtNo=121228002&Ref=AR&MaxW=640&Border=0&Under-Weather-More-snow-way
Answer: Mostly True.

The Science: Still or calm winds are usually found towards the middle of a high pressure system or air mass. While precipitation is usually found near the boundaries of air masses.  This is why if the winds are calm or still that there shouldn't be any precipitation. However, there is always that chance that it could be wrong.

Side note, there is no "bad" weather or "good" weather. Weather is just weather, people just associated rain with "bad" weather and sunshine with "good" weather. 


Photo From:
mansfieldnewsjournal.com

Friday, March 8, 2013

Friday: National Severe Weather Preparedness Recap

If you missed this week's Severe Weather Preparedness Week, don't worry, I thought that I would give you all a recap of what you learned this week. Because it is super important that you know all of these things when severe weather does hit.
http://www.nws.noaa.gov/com/weatherreadynation/files/NSWPW_poster_2013.jpg
Thunderstorms and Tornadoes can move in any direction! If you see these terms flashing across the screen you know what they mean:

Severe Thunderstorm Watch: A "Watch" means that you should be alert for severe weather later in the day or night.
Severe Thunderstorm Warning: At this time you should take shelter while the storm passes.

You need one of these three things for a Thunderstorm to be severe:
1. Producing one inch or larger in diameter hail
2. Producing winds equal or exceeding 58 miles per hour
3. Producing a tornado

Each year, many people are killed or seriously injured by tornadoes and other types of severe weather, despite advance warning. In 2012, there were more than 450 weather- related fatalities and nearly 2,600 injuries. Every state in the United States has experienced tornadoes and severe weather- 46 states reported tornadoes in 2012- so everyone is exposed to some degree of risk. Often the real "first responders" to an emergency don’t have flashing lights and sirens. They are moms and dads, store managers, and teachers. What they do before, during, and after an emergency can save lives.

Basically just take precaution when severe weather is in your forecast!  Stay Safe Everyone and Happy Severe Weather Preparedness Week!

Photo and Info From:
noaa.gov

Wednesday, March 6, 2013

Preparing For Wacky Weather

National Severe Preparedness Week

This week is the National Severe Preparedness Week! In order to get you all ready for the storm season, I thought I would theme this week's blog posts as "Severe Weather". We will be continuing your Severe Preparedness Week with how to be prepared when the severe weather hits!

If you find yourself in the path of a severe storm make sure you are taking precautionary measures to keep yourself and people around you safe.

If you are outdoors and there is a chance for severe weather, make sure you are keeping an eye to the sky. Look for darkening skies, flashes of lightning or increasing winds. If you are indoors try to stay away from windows and do not go out onto your porch. Remember just because you are indoors does not mean you are safe from lightning. 

My biggest take home point would be if you see some get struck by lightning... go help them! You will not get electrocuted by touching a lightning victim, but there sure do need you to call 9-1-1! Basically, this week is to remind you to heed warnings from your meteorologist! If they are telling you to take shelter, it's probably a good idea. I know all of this stuff seems basic but it's good to have a refresher every once and a while.


Photo From:
prepare.ua.edu

Tuesday, March 5, 2013

Forecasting 101: Thunderstorm Basics

National Severe Preparedness Week

This week is the National Severe Preparedness Week! In order to get you all ready for the storm season, I thought I would theme this week's blog posts as "Severe Weather". We will be continuing your Severe Preparedness Week with a lesson about severe thunderstorms!
 
So what is a thunderstorm? By definition a thunderstorm is a rain shower that has both thunder and lighting. A thunderstorm becomes severe when it produces one inch or larger in diameter hail, and/or winds equal or exceeding 58 miles per hour and/or is producing a tornado.

I know sometimes it can be confusing deciphering what the difference between a watch and a warning are, so I put the definitions below with what it all actually means. 

Severe Thunderstorm Watch: A watch is issued by the Storm Prediction Center which is part of the National Weather Service. They issue a watch when conditions are favorable for the development of severe thunderstorms in and close to the watch area. They are normally issued well in advance of the actual occurrence of severe weather. A "Watch" means that you should be alert for severe weather later in the day or night.

Severe Thunderstorm Warning: A warning is issued by your local National Weather Service Office. A Severe Thunderstorm Warning is issued when the Doppler Radar or storm spotter has reported hail larger than one inch, winds equal or exceeding 58 miles per hour, or a tornado has been spotted. A "Warning" means that a severe storm is occurring and heading in your direction. At this time you should take shelter while the storm passes.


Photo From:
srh.noaa.gov

Monday, March 4, 2013

Myth: Thunderstorms and Tornadoes Always Move From East to West

National Severe Preparedness Week
http://www.nws.noaa.gov/com/weatherreadynation/files/NSWPW_poster_2013.jpg
This week is the National Severe Preparedness Week! In order to get you all ready for the storm season, I thought I would theme this week's blog posts as "Severe Weather". We will be starting off your Severe Preparedness Week with a myth buster about thunderstorms and tornadoes!

Myth: Thunderstorms and Tornadoes Always Move From East to West
http://www.physicalgeography.net/fundamentals/images/thunderstorm.jpg
Answer: Sometimes True. Man, if this was always true my job would be so easy!

The Science: Atmospheric conditions dictate where, and how a storm will form and move. Tornadoes and Thunderstorms can move in ANY direction!


Photo From:
physicalgeography.net