Students will learn about severe weather in Utah.
- Check district media centers for these videos.
- Restless Atmosphere
- What Makes Weather?
- Weather Class with Dr. Niel Frank
- Weather Express
- Weather Station Backyard Science
- There are also commercial weather videos available.
Background for Teachers
Utah has a dry climate with mild winters and long, warm summers. Temperatures
throughout the state vary. The cooler temperatures are found more in the northeastern
part of the state and the mountains. The warmer temperatures are found in the western,
central, and southern parts of Utah. Because of the fact that Utah gets less than ten inches
of precipitation per year, it is known as a desert.
The above scenario makes Utah sound quite boring. But don’t let this fool you.
Utah can have very severe weather.
- January is usually our snowiest month. Valley storms in January will vary from
one inch to eight inches per storm in northern and central Utah. However, there
have been times when the storms in the valley have exceeded 12 inches, and
snow continues to fall, adding inches everyday. Plus, we can have heavy
snowstorms in February, March, April, and even May.
- April and May are usually the rainiest month. Storms during these months vary
from 1/8 inch to 1/2 inch per storm. But sometimes in April, storms can bring
in an inch or more of rain. These storms can even continue to come in May,
bringing much more precipitation.
- In the summertime, even though Utah is very hot and dry, summer storms may
come in, bringing thunder and lightning, wind, and rain. Occasionally, summer
cumulus clouds (thunderheads) can gather large amounts of moisture coming
in from the south. This moisture brings extraordinarily close lightning with
the clouds being so low, heavy winds, hail, and torrents of rain come in. The
lightning causes many fires throughout the state of Utah each year. The heavy
winds down trees, blow roofs off houses, and blow down a whole crop of wheat
or alfalfa. The hail can be the size of marbles, stripping plants of their leaves
or breaking the stalks of small new plants. Torrents of rain can cause flash
flooding, bringing much water and mud down from the mountains destroying
crops, houses, and businesses.
- In general our mountains throughout Utah prevent high winds. But, in recent
years, we have been reminded that tornadoes have formed from cold down drafts
within a small area.
- Sometimes, winds in Utah preceding a storm can reach from 50 to 80 miles an
hour, especially in wind gusts.
- Temperatures can exceed 115 degrees Fahrenheit in the summer and get as low as –30 degrees in the wintertime in our cities. Both of these extreme
temperatures can kill plants and animals. (The cold temperatures can reach lower
than –30 degrees when a wind chill is present.)
Weather like this doesn’t happen often in Utah, but when it does, it causes much
damage and can be life-threatening.
Intended Learning Outcomes
1. Use science process and thinking skills
2. Manifest scientific attitudes and interests
3. Understand science concepts and principles
4. Communicate effectively using science and language and reasoning
Pre-Assessment/Invitation to Learn
Ask the students these questions: (Have them write the answers in their journals.)
- Have you ever planned an activity and had it ruined by bad weather? What was it?
- What is considered “bad weather”?
- What type of weather have you seen or heard of in Utah that can be destructive? (Introduce severe weather here.)
- What are things that can be destroyed by severe weather?
- Explain that here in Utah we don’t have it as bad as some people who live
elsewhere in the country. What severe weather do other states usually
encounter that we don’t see much at all? (tornadoes, ice storms, hurricanes, etc.)
- Explain that here in Utah our most dangerous weather usually occurs when we
have thunder and lightning. Why are thunder and lightning storms dangerous in
Utah? (If possible, show some pictures from the Internet of severe weather and
Rainstorms in class:
- Turn off the lights and have everyone tap one finger on their desks as it starts to rain.
- Tap all fingers on the desk so it rains harder.
- Have someone switch the lights on and off quickly for lightning.
- Add snapping fingers, clapping hands, and stomping feet, as the storm gets worse.
- Finally, do the sounds more quietly in reverse, as the storm moves away.
Questions to ask after the storm simulation:
- Why are thunderstorms dangerous?
- What can happen if you are out in a thunderstorm?
- What are precautions that you must take in a thunderstorm?
We can find the answers to these questions on the Internet.
Today we will be exploring some wild weather information on the Internet.
Each student should be given a list of addresses to enter into the computer.
- Help the students access the Internet sites.
- If you have access to a projector and an Internet connection, you may do this with the
- This activity lends itself to a great discussion.
- Students can bookmark the Deseret News website to get daily weather instrument
readings. (Standard V)
- Use the video, Eyewitness Weather, and discuss severe weather around the
country and if Utah has had this same type of weather. (Standard V)
- Read Flash, Crash, Rumble Roll to your class. Have a discussion afterwards. (Standard VII, Objective 2)
- Have the students write about an incident they have been through where the
weather was severe enough for them to remember. (Standard VIII, Objective 6)
- Students can do some graphing and comparisons around the state or country of
temperatures, precipitation, climates, etc. (Standard V, Objective 1)
Homework & Family Connections
- Students with Internet connections at home can be asked to visit weather websites
that are given in class to show their parents and family.
- Students can be assigned to watch the evening weather forecast on one of the TV
news channels and watch for severe weather around the country.
- Have the students set up a weather station at home to continue their investigation
- Why is technology important to us when we want to gather information about
- What types of severe weather are there in Utah?
- What makes severe weather “bad” weather?
- Compare normal weather with severe weather. (rain to flooding; lightning to
catching things on fire; wind to blowing roofs off of buildings; etc.)