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Summer Safety Infographics (New)

 

Excessive Heat:
Why is excessive heat so dangerous?
Heat becomes especially dangerous if it lingers for more than one day.
Hot days and warm nights don’t give our bodies time to cool down.
Heat islands can intensify extreme hot weather, which can cause breathing problems, heat cramps, heat stroke, and may lead to illness or even death.

What can you do?
Check on your friends, family and neighbors during heat waves.
Wear light, loose-fitting clothing and drink water often. Don't wait until you are thirsty.
Avoid unnecessary hard work or activities if you are outside or in a building without air-conditioning.
Stay in an air-conditioned area. Air conditioning is the strongest protective factor against heat-related illness.
Lightning Types:
In cloud-to-ground lightning (CG), a stepped leader, will zigzag downward in roughly 50-yard segments in a forked pattern. This stepped leader is invisible to the human eye. 
A return stroke of bright luminosity travels about 60,000 miles per second back towards the cloud. A flash consists of one or perhaps as many as 20 return strokes.
Cloud flashes sometimes have visible channels that extend out into the air around the storm but do not strike the ground, known as cloud-to-air (CA).
The terms sheet lightning or intra-cloud lightning (IC) refers to lightning embedded within a cloud that lights up as a sheet of luminosity during the flash. 
Lightning can also travel from cloud-to-cloud (CC).
Large thunderstorms are capable of producing other kinds of electrical phenomena called transient luminous events (TLEs) that occur high in the atmosphere. They are rarely observed visually and not well understood. 
The most common TLEs include red sprites, blue jets, and elves.
Ball lightning is a rare and randomly occurring bright ball of light observed floating or moving through the atmosphere close to the ground.
Observations have widely varying identifying characteristics for ball lightning, but the most common description is that of a sphere having a radius of 15–50 cm, orange or reddish in color, and lasting for only a few seconds.
The Speed of Wildfires:
Weather Conditions
Wind speed has a huge effect on fire intensity and how fast fires travel. Wind pushes the flame forward and closer to the unburned fuel in front of the fire. Temperature, humidity, and precipitation are also important due to their strong influence on fuel moisture content.

Spotting
Wind and thermals can carry sparks and firebrands downwind of fires, greatly increasing spread rates.

Fuel Type
The type of vegetation along with the fuel moisture content, physical properties, and chemical properties play a role in fire behavior and how fast fires spread.

Topography
Slope steepness affects fire behavior in a similar way as wind by changing the flame angle. Elevation and aspect are also important in determining how fires spread.
Hail Size Chart - while the National Weather Service encourages the actual measurements of hail size, oftentimes, an object-to-size conversion can provide important information about hail that fall from thunderstorms. Below you will find a list of common objects used to describe the diameter of observed hail. Pea: 0.25 inches. Penny: 0.75 inches. Quarter: 1.00 inches. Ping pong ball: 1.50 inches. Gold ball: 1.75 inches. Lime: 2.00 inches. Tennis Ball: 2.50 inches. Baseball: 2.75 inches. Softball: 4:00 inches. Grapefruit: 4.50 inches. weather.gov
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All Summer Hazard Infographics

 

Air Quality Flood Heat Hurricane Lightning Rip Currents Tornado Wildfire
Air Quality Flood Heat Hurricane Lightning Rip Currents Tornado Wildfire