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Weather Quiz 4 > 1 > Flashcards

1 Flashcards

1
Q

Radar only detects

A

Precipitation

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2
Q

Radar does not detect

A

cloud or fog

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3
Q

True or false

Cell movement indicates general movement of lines and areas

A

False

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4
Q

Convective precipitation has the following radar characteristics

A

1.Echoes form lines
2Reflective gradients are strong
3.Precipitation intensities vary from moderate
to extreme
4.Occasionally precipitation intensities can be light
5.Echo patterns change rapidly when animating image

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5
Q

Stratiform precipitation has the following radar characteristics

A
  1. Widespread
  2. Weak reflective gradient
  3. Precipitation intensities are light to moderate (39dBZ or less)
  4. Echo patterns change slowly when animating the image
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6
Q

Name limitations of weather radar

A
  1. Beam blockage
  2. Ground clutter
  3. Angels
  4. Ghost
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7
Q

2 types of satellites

A

GOES and POES

Geostationary and Polar Operational Environmental Satellites

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8
Q

3 types of satellite imagery

A
  1. Infrared imagery
  2. Water vapor
  3. Visible imagery
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9
Q

Through interpretation of satellite imagery, an analyst can estimate what?

A

Cloud heights

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10
Q

Visible imagery is only available during

A

daylight

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11
Q

Infrared imagery is based on

A

temperature signatures

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12
Q

SIGMETS provide notice of

A

Potentially hazardous weather

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13
Q

2 most common conditions that initiate a SIGMET

A
  1. Severe Turbulence

2. Severe icing

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14
Q

Define convective

A

Vertical movement of the air (thunderstorms)

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15
Q

What weather phenomenon is covered by Convective SIGMETs

A

thunderstorms

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16
Q

When is a “special convective SIGMET” issued

A
  1. Tornadoes
  2. Hail greater 3/4”
  3. Wind gust greater than 50kt
  4. Rapidly changing conditions
17
Q

How do AIRMETs compare to SIGMETs

A

they are lower in intensity

18
Q

AIRMET Sierra

A

IFR/ Mountain obscurations

19
Q

AIRMET Tango

A

Turbulence

20
Q

AIRMET Zulu

A

Icing

21
Q

LLWS is defined as

A

Wind shear below 2000 ft AGL exceeding 10 kt per 100ft

22
Q

What color are cold fronts

A

Blue

23
Q

What color are warm fronts

A

Red

24
Q

What color are Troughs

A

Brown

25
Q

Difference between PROG charts and Surface Analysis chart

A

PROGs are forecast and Surface Analysis are current

26
Q

The weather depiction chart gives a __________ of the observed ___________ conditions

A

Broad overview, category

27
Q

IFR

A

less than 1000 ft ceiling and 3 SM visibility

28
Q

VFR

A

greater than 3000 ft ceiling and 5 SM visibility

29
Q

MVFR

A

greater than IFR but less then VFR. In the middle

Weather Quiz 4 (1 decks)

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