| The rising air cools and produces towering cumulus and cumulonimbus clouds. |
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| A cumulonimbus has drifted over the spires of downtown, where it hangs like a vast gray anvil. |
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| As air rises in a large cumulonimbus or thunderhead cloud condensation occurs and all three forms of water are present. |
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| The top of a cumulonimbus cloud is often capped by cirrus, which is why the anvil of a thundercloud is often brilliant white. |
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| I was browsing through the magazines when he came storming up to me, face like a cumulonimbus. |
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| The rising air is associated with a region of low air pressure, towering cumulonimbus clouds and rain. |
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| Amateur meteorologists will recognize the cumulonimbus, a thunderstorm cloud characterized by the anvil shaped top. |
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| The ITCZ corresponds to the equatorial trough and is the mechanism that helps generate the deep cumulonimbus clouds through convection. |
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| In addition, towering cumulus and cumulonimbus were reported with the showers and thunderstorms. |
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| In a few cases, the air will be unstable enough to form small cumulonimbus cells up to about 20,000 feet. |
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| Also worth noting is the possibility of cumulus and cumulonimbus wich should also be usefully exploited. |
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| When the thundercloud reaches the cumulonimbus stage and hits the tropopause, the jet stream tugs the cloud into a recognizable anvil shape. |
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| The sky is filled with the remnants of the enormous cumulonimbus rain clouds that have been building up, emptying their contents and building up again all day. |
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| These cumulonimbus clouds travel along the same trajectory day in and day out. |
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| Clouds run the gamut here, from the menacing cumulonimbus of an approaching storm to the fluffy white paradisiacal cumuli of a fair-weather day. |
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| Isolated cumulonimbus clouds sometimes form over the Highlands moving southward along the Shipshaw River, in late morning or in the afternoon. |
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| And legacy makers of hardware and software should expect stormy cumulonimbus formations overhead. |
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| Pilots usually try to avoid cumulonimbus, or thunder clouds, by flying around or above them. |
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| This electrification is particularly large in cumulonimbus clouds as a result of vigorous vertical mixing and collisions. |
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| Complete crops can be destroyed in and strongly convective conditions, minutes when a hailstorm sweeps across a extremely large cumulonimbus clouds region. |
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| In cumulonimbus clouds during conditions where graupels are repeatedly wetted and then injected back toward high altitudes by strong updrafts, very large graupels called hail result. |
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| Cumulus congestus clouds extend into the middle troposphere, while deep, precipitating cumuliform clouds that extend throughout the troposphere are called cumulonimbus. |
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| The area forecast was for overcast cloud based at 6,000 to 8,000 feet, isolated embedded cumulonimbus cloud and thundershowers, and winds increasing in strength after 1400 CST to 20 knots, with gusts up to 35 knots. |
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| The forecast for the district included severe, clear icing in the cumulonimbus clouds and moderate, mixed icing in the altocumulus and towering cumulus. |
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| At the time SR 111 departed from JFK airport, there was lightning associated with cumulonimbus clouds in the area, northwest and south of the airport. |
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| The weather report at JFK airport included occasional lightning in cloud at the time of SR 111's departure, with isolated thunderstorms and cumulonimbus clouds in the vicinity. |
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| The exceptions are clouds with very strong vertical updrafts, such as towering cumulus or cumulonimbus, where liquid water droplets can be carried to great heights before freezing. |
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| Downbursts and microbursts are the hot, humid air in the lower atmosphere powerful downdrafts within cumulonimbus has a cool, dry air layer above it. |
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| Once again there was more than sixty miles of zigzagging between the cumulonimbus in store to avoid the calms and benefit from the puffs of air rippling across what wasn't a totally smooth racing zone. |
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| He introduces the half-dozen main types of clouds as if they were his oldest friends: there is the towering, thunderous cumulonimbus, the beautiful cirrus, the fluffy, fine-weather cumulus. |
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| You know you love to go up, horse around among the cumulonimbus clouds and dive through the valleys and up and around and loop and all this business, it's a wonderful feeling. |
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| They are connected to a towering cumuliform cloud or a cumulonimbus cloud. |
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| Provided necessary and sufficient atmospheric moisture content, the moisture within the rising air will condense into clouds, namely stratus and cumulonimbus. |
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