Milibars

1
Milibars

• A unit of measuring air pressure abbreviated
  (mb). Low mb means bad weather, high mb means
  good weather.
• Key Word mb
• Think air pressure

2
Air Pressure

• The pressure or weight of the air above you.
• Key Word weight
• Think Air is not weightless.

3
Pressure Gradient

• The change in air pressure (weight) divided by
  the distance.
• Or
• (change in milibars/distance)
• Key Word Slope
• Think low slope is slow change, low gradient

4
Barometric Trend

• A description of how the pressure is changing
  over time (rising/falling/steady)
• Key Word Pressure change
• Think Rising, good weather, dropping bad.

5
Isobars

• Lines connecting locations with the same pressure
  (measured in milibars).
• Key Word Equal Pressure
• Think Contour Lines

6
Sustained Winds

• Winds Maintaining, or continuing at a certain
  speed without letting up.
• Key Word kept up
• Think Winds needed to make a wind turbine spin
  all the time

7
Flooding

• Over-bank flow of water from a lake, stream,
  ocean or river.
• Key Word overflows
• Think overfilled cup

8
Fresh water flooding

• Flooding that occurs due to heavy rain fall
  related to a hurricane.
• Key Word Flooding
• Think Normanskill after a heavy rain.

9
Levee

• A pile of earth along side a river or on a coast
  line to prevent rising water from flooding
  surrounding area.
• Key Word Dam
• Think Dam along the sides of a river

10
Watch

• Typically refers to an advisory issued to
  indicate that conditions are favorable for the
  development of dangerous conditions weather
• Key Word Possible
• Think Winter Storm Watch, it MIGHT snow a lot

11
Warning

• Refers to a warning of dangerous conditions
  expected to occur or are already occurring.
• Key Word Will happen
• Think Winter storm warnings, mean it will snow a
  lot

12
Mandatory Evacuation

• Residents of an area are told to leave, and can
  be removed by force by law enforcement.
• Key Word Evacuate
• Think Everyone has to leave

13
Voluntary Evacuation

• Residents are asked to leave, but are not removed
  by force.
• Key Word Asked
• Think Some leave, some stay

14
Saffir-Simpson Scale

• A way of measuring hurricane strength base on
  wind speed, storm surge and air pressure.
• Key Word Strength
• Think Big number, Big strength.

15
Storm Track

• The path followed by the centre of a low pressure
  system or cyclone over a given period of time,
  usually its lifetime.
• Key Word Path
• Think Path followed by storm

16
Tropical Depression

• A cluster of thunderstorms forming over the
  ocean, that join in to one low pressure system.
• Key Word Group
• Think Baby Hurricane

17
Tropical Storm

• A cyclonic storm having winds ranging from
  approximately 48 to 121 kilometers (30 to 75
  miles) per hour
• Key Word Cyclonic
• Think Toddler Hurricane

18
Ocean Basin

• Saucer-like depressions of the seabed, covered by
  an ocean, named for the ocean covering them
• Key Word Sink(basin)
• Think Name of the ocean in that area

19
Hurricane

• A cyclonic storm with especially in the Atlantic
  winds of 74 miles (119 kilometers) per hour or
  greater that occurs
• Key Word Cyclonic
• Think Spinning clothes in a washing machine,
  enormous in size

20
Typhoon

• A hurricane that is occurring in the Pacific
  Ocean
• Key Word Pacific Hurricane
• Think Hurricane

Japan
21
Cyclone

• A hurricane in the Indian Ocean
• Key Word Indian Hurricane
• Think Hurricane

22
Storm Surge

• water that is pushed toward the shore by the
  force of the winds swirling around the storm
• Key Word Wave
• Think Miniature Tsunami

23
Hurricane Eye

• The center point of rotation for a hurricane.
  Very clear skies and calm weather located here.
• Key Word Middle
• Think Clear, cloudless day with no wind.

24
Eye Wall

• just outside of the eye is the eye wall. This is
  the location within a hurricane where the most
  damaging winds and intense rainfall is found
• Key Word Wall
• Think The Wall divides the outside of the storm
  from the calm eye