Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
WX
Weather
| Question | Answer |
|---|---|
| Tertiary Circulations | Are Thermally Induced. They are driven by local heating and cooling. These patterns are set up when there are weak opposing pressure gradients. |
| Sea/Lake Breeze | Wind Blows from water to land Daytime Develops in A.M. Convective clouds over land parallel coast AKA "Sea Breeze Front" Peaks in P.M. |
| Land Breeze | Land to Water Night Feature Develops during Sunset Peaks before Sunrise Convective Clouds over water parallel coast Weaker than Sea Breeze |
| Valley Breeze | Valley to Mountain Daytime Develops in A.M. Peaks in Afternoon |
| Mountain Breeze | Mountain to Valley Night Develops after Sunset Peak strength prior to Sunrise |
| Thunderstorm Basic Concepts Formation Ingredients Moisture | Warm moist air acts as the Main Ingredient for TS formation |
| Thunderstorm Basic Concepts Formation Ingredients Forced Convection | Upward vertical motion of air resulting from outside forces. |
| Thunderstorm Basic Concepts Formation Ingredients Free Convention | Upward vertical motion of air resulting strictly from density differences within the atmosphere. |
| Stages of Development-3 Stage Model Cumulus Stage | First Stage of TS Development Storm Consists of up drafts only and precipitation forms aloft. The updraft is what keeps the precipitation from falling to the surface. |
| Stages of Development-3 Stage Model Mature Stage | Both updrafts and downdrafts are present. Precipitation becomes too heavy & falls to the surface creating downdrafts. |
| Stages of Development-3 Stage Model Dissipating Stage | The Storm consists of downdrafts only. |
| Thunderstorm Characteristics Cloud Type | TS clouds are Cumulonimbus |
| Thunderstorm Characteristics Winds | Strong gusty surface winds referred to as Gust Fronts or Outflow Boundaries. Occurs when the downdraft of a Mature Stage TS reaches the surface & diverges in all directions, pushing the strongest wind toward the leading edge. |
| Thunderstorm Characteristics Precipitation | Precipitation with a TS consists of heavy rain or snow showers. Hail is often associated with TS as well. |
| Thunderstorm Characteristics Lightning | Is an Electrical Discharge. Upper part of the cloud produces a positive charge while the lower portion produces a negative charge. The earths surface is positively charged. Unlike charges attract each other and increases the electrical field. |
| Thunder | Is an Audible Shock wave. Lightning heats atmospheric gases, the gases rapidly expand releasing a pressure wave into the atmosphere. The atmosphere compresses the gases and creates thunder. |
| Thunderstorm Intensities Non-Severe | More than 90% of all TS are non-severe. Surface winds less than 50 knots and hail less than 3/4" in diameter. |
| Thunderstorm Intensities Severe | Less than 10%. Winds of 50 knots or more and hail 3/4" or greater in diameter. Can transition into Tornadic storms. |
| Thunderstorm Intensities Tornadic | Less than 2% of all TS are tornadic. Characterized by cumulonimbus cloud with a tornado on land or a cumulonimbus cloud with a waterspout on water. |
| Thunderstorm Types Air mass Thunderstorm | Resembles 3 stage model Forms due to Free Convection Widespread & Sporadic pattern Common in mT air masses South eastern U.S. in summer |
| Thunderstorm Types Orographic | Forms in mountainous regions Forms due to Forced Convection When moisture is available, they will form and remain on the windward side of mountains. Stronger wind, more intense storm |
| Thunderstorm Types Frontal | Associated with Fronts Forced Convection Forms in lines Much more violent compared to Air mass TS. More common with cold fronts than warm fronts. |
| Thunderstorm Types Multi-cellular TS | When the Outflow from neighboring TS interact, the low level convergence develop new TS. Possibly form into a Cluster or line. Each TS is in a different stage and feeding from the energy from other storms. Probably the most common. |
| Thunderstorm Types Mesoscale Convective Complexes(MMC's) | Forms in a circular pattern with a diameter of 200 miles. Initial TS - Free Convection Additional TS- Forced Convection Continue through the night due to Greenhouse Effect. |
| Thunderstorm Types Mesoscale Convective System (MCS) | Large elongated area of TS associated with Fronts or Troughs. Each TS with MCS can develop into a sever TS. Development continues until divergence aloft decreases. |
| Thunderstorm Types Supercell sever storms | More violent Enormous TS with updrafts balanced and is able to maintain itself as a single entity for hours on end. Produces Tornadoes and destructive hail. |
| Supercell Formation requirements | LL's-Strong moisture advection into an area of strong convergence. Mid-levels-700 Mb dry air intrusion Upper-levels- Significant divergence and cold air advection at 500 Mb |
Created by:
aycoop
Popular Earth Science sets