Regional Gliding School CLOUDS Cumulus form in rising air currents and indicate unstable air Stratus...

Regional Gliding School

CLOUDSCLOUDSCumulusCumulus

form in rising form in rising air currents and air currents and indicate indicate unstable airunstable air

StratusStratusform in form in horizontal layers horizontal layers and indicate and indicate stable airstable air


Families:Families:

LOW (STRATO)LOW (STRATO) surface - surface - 6,500ft6,500ft

MIDDLE (ALTO)MIDDLE (ALTO) 6,500ft - 6,500ft - 23,000ft23,000ft

HIGH (CIRRO)HIGH (CIRRO) 16,500ft - 45,000ft16,500ft - 45,000ft VERTICALVERTICAL 1,500ft - above1,500ft - above

DEVELOPMENTDEVELOPMENT

Height of Bases:Height of Bases:


CIRRUS (CI)CIRRUS (CI)

Thin delicate wispsThin delicate wisps


CIRRO-CUMULUS (CC)CIRRO-CUMULUS (CC)

Thin cottonball likeThin cottonball like


CIRRO-STRATUS (CS)CIRRO-STRATUS (CS)

Thin high sheetThin high sheet Produces “Halo” effectProduces “Halo” effect Often indicates the approach Often indicates the approach

of a warm front of a warm front


ALTOCUMULUS (AC)ALTOCUMULUS (AC)

Layers of rounded masses of cloudLayers of rounded masses of cloud


ALTOSTRATUS (AS)ALTOSTRATUS (AS)

Thick grey clouds that often cover the entire Thick grey clouds that often cover the entire

skysky

May give some light rain or snowMay give some light rain or snow


ALTOCUMULUS ALTOCUMULUS CASTELLANUS (ACC)CASTELLANUS (ACC)

Altocumulus with turrets Altocumulus with turrets


NOTE: You must use the buttons in the Confirmation Stage


A

B

C

D

1,500-6500 feet

6,500-23,000 feet

16,500-45,000 feet

23,000-45,000 feet

Let's try a few review questions on Meteorology:

Question #1 - What is the height of middle clouds?

MeteorologyMeteorologyCloudsClouds

I’m afraid that answer is incorrect

Let's try again...

Flying Scholarship Program


That answer is correct.

Let's move on...


Families:Families:

LOW (STRATO)LOW (STRATO) surface - surface - 6,500ft 6,500ft

MIDDLE (ALTO)MIDDLE (ALTO) 6,500ft - 23,000ft 6,500ft - 23,000ft

HIGH (CIRRO)HIGH (CIRRO) 16,500ft - 45,000ft16,500ft - 45,000ft

VERTICALVERTICAL 1,500ft - above 1,500ft - aboveDEVELOPMENTDEVELOPMENT

Height of Bases:Height of Bases:


A

B

C

D

Altostratus

Altocumulus Castellanus

Cirrostratus

Cirrocumulus


Question #2 - What type of cloud produces a halo effect?



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Let's move on...


CIRROCIRRO--STRATUS (CS)STRATUS (CS)

Thin high sheetThin high sheet

Produces “Halo” effectProduces “Halo” effect

Often indicates the approach Often indicates the approach of a warm frontof a warm front


STRATUS (ST)STRATUS (ST)

A uniform layer, like fog, but not A uniform layer, like fog, but not

resting on the ground resting on the ground

Drizzle often falls from stratusDrizzle often falls from stratus


STRATUS FRACTUS (SF)STRATUS FRACTUS (SF)

Pieces of StratusPieces of Stratus


STRATOCUMULUS (SC)STRATOCUMULUS (SC)

A thin layer of rounded masses of A thin layer of rounded masses of

cloudcloud


NIMBOSTRATUS (NS)NIMBOSTRATUS (NS)

A low layer of uniform, dark grey A low layer of uniform, dark grey cloudcloud


CUMULUS (CU)CUMULUS (CU)

ThickThick Rounded and lumpyRounded and lumpy Resemble cotton ballsResemble cotton balls


Cumulus Fractus (CF)Cumulus Fractus (CF)

Broken CumulusBroken Cumulus


TOWERING CUMULUS (TCU)TOWERING CUMULUS (TCU)

Cumulus that builds up into high Cumulus that builds up into high

towering massestowering masses

Rough air underneath Rough air underneath

Heavy icing in cloudHeavy icing in cloud


CUMULONIMBUS (CB)CUMULONIMBUS (CB)

Heavy masses of cumulusHeavy masses of cumulus Anvil topAnvil top Violent vertical currentsViolent vertical currents CB clouds should be avoided by all aircraftCB clouds should be avoided by all aircraft


Clouds of Vertical Clouds of Vertical DevelopmentDevelopment

bases as low as 1,500 feet composed of:

– water droplets– supercooled water droplets– ice crystals.


NOTE: You must use the buttons in the Confirmation Stage


A

B

C

D

Water droplets

Ice crystals

Supercooled water droplets

All the above


Question #3 - What are clouds of vertical development composed of?



Let's try again...




Let's move on...


Clouds of VerticalClouds of VerticalDevelopmentDevelopment

bases as low as 1,500 feet

composed of:– water droplets

– supercooled water droplets

– ice crystals.


A

B

C

D

Altostratus

Cirrus

Altocumulus

Cirrostratus


Question #4 - What cloud is thick gray and often covers the entire sky?



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Let's move on...


ALTOSTRATUS (AS)ALTOSTRATUS (AS)

Thick grey clouds that often cover the entireThick grey clouds that often cover the entire

skysky

May give some light rain or snowMay give some light rain or snow


Congratulations!!

You have now completed the Clouds lesson of the Meteorology Module. Of course, this lesson is always available to you for future reference if required.

You are now ready to move along to the next Meteorology lesson you have not completed or to any other module you wish. You can advance to the Self Test Module if you feel ready to challenge the final exam.

Good Luck!


Regional Gliding School CLOUDS Cumulus form in rising air currents and indicate unstable air Stratus...

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