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Weather Resources - Online Cloud Guide

Cumulus Clouds

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CUMULUS Congestus
CUMULUS congestus

  • If clouds form from SW to NW, precipitation with gusty winds and thunderstorms or only wind squalls are likely within 5 to 10 hours.

CUMULUS Congestus
CUMULUS Congestus

  • Cloud tops forming altocumulus cumulongenitus usually brings precipitation in 5 to 10 hours, gusty winds, thunder showers, wind squalls.

CUMULUS Congestus
CUMULUS Congestus

  • If clouds form from SW to NW, precipitation with gusty winds and thunderstorms or only wind squalls are likely within 5 to 10 hours.

CUMULUS Congestus with Fracto Stratus
CUMULUS congestus with fracto stratus

  • Precipitation of long duration if winds from NE to S, or shorter duration with other winds.

CUMULUS with Vertical Growth
CUMULUS with vertical growth

  • Fair weather clouds building up vertically often indicate cumulus congestus and cumulonimbus which bring afternoon showers.

CUMULUS Humilis
CUMULUS humilis

  • Fair weather clouds if they show no vertical development.
  • Can build up and develop into cumulus congestus or cumulonimbus clouds.

CUMULUS Fractus
CUMULUS fractus

  • Fair weather clouds broken up by strong winds.
  • No precipitation unless winds steady NE to S, then cumulus fractus of bad weather.