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Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University

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Page 1: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Cloud TypesCloud Types

Dr. Dave Dempsey

Professor of Meteorology

Department of Geosciences

San Francisco State University

Dr. Dave Dempsey

Professor of Meteorology

Department of Geosciences

San Francisco State University

Page 2: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Steam fog on lake surface

Steam fog on lake surface

• Lassen National Park, CA• ~ 6,000 ft. elevation• October• calm• clear night

Page 3: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Steam devil (steam fog)

• Yellowstone National Park, WY

• geothermal hot pool• breeze blowing across pool

Page 4: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Steam devil (steam fog)

Steam devil (steam fog)

• Yellowstone National Park, WY

• geothermal hot pool• breeze blowing across pool

Page 5: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Port Townsend, WashingtonPort Townsend, WashingtonMixing clouds

Page 6: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Contrail and

altocumulus clouds Contrail and

altocumulus clouds

Olympic Mts., WA

Page 7: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Contrails Contrails

Mt. St. Helens, WAtaken May 20, 1979mountain erupted May 18,

1980

Page 8: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Eastern Sierra Nevada Mts. and Mono Lake, CA

Eastern Sierra Nevada Mts. and Mono Lake, CA

Contrails

Page 9: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Radiation fog and

altostratus clouds Radiation fog and

altostratus clouds

• Santa Rosa Valley, CA• April• pre-dawn• calm• clear night

Page 10: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Santa Rosa Valley, CA(sunrise, April)

Santa Rosa Valley, CA(sunrise, April)

Radiation fog

Page 11: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Central Valley near Chico, CA(morning in December; clear night)

Central Valley near Chico, CA(morning in December; clear night)

Radiation fog

Page 12: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Central Valley near Chico, CA(morning in December; clear night)

Central Valley near Chico, CA(morning in December; clear night)

Radiation fog

Page 13: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Central Valley near Chico, CA(morning in December; clear night)

Central Valley near Chico, CA(morning in December; clear night)

Radiation fog

Page 14: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

San Francisco Peninsula,Crystal Springs Reservoir (June)San Francisco Peninsula,Crystal Springs Reservoir (June)

Advection fog

Page 15: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

San Francisco Peninsula(looking southwest; June)Advection fog

Page 16: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

San Francisco (June)Advection fog

Page 17: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

San Francisco (June)Advection fog

Page 18: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Advection fog Advection fog

Golden Gate,San Francisco

June

Page 19: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Stratus clouds(marine push)

Stratus clouds(marine push)

• North CascadesNational Park, WA

• ~ 6,000 ft. elevation• well inland from Puget Sound

Page 20: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Cirrus clouds

Western Colorado

Page 21: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Cirrus clouds

Acoma Pueblo, NM

Page 22: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Cirrocumulus clouds

Baja California

Page 23: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Mt. Everest, NepalCirrostratus (halo, arcs, etc.)

Page 24: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Mono Lake, CAMid- and high-level clouds

Page 25: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Mono Lake, CAMid- and high-level clouds

Page 26: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Point Reyes, CA (Sept.)Altocumulus clouds

Page 27: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Western Colorado (June)Altocumulus clouds

Page 28: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Death Valley, CA (March)Altocumulus & cumulus clouds

Page 29: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Altocumulus clouds

Chico, CA• Daisies• summer

Page 30: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Boulder, ColoradoStratocumulus (roll) clouds

Page 31: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

S.E. Utah (May)Fairweather cumulus clouds

Page 32: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Mono Lake, CA (Aug.)Stratocumulus clouds

Page 33: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Crater Lake N.P, Oregon (July)Cumulus clouds

Page 34: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

San Luis Valley, Colorado (June)Cumulus cloud

Page 35: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Eastern Colorado (June)Cumulus clouds

Page 36: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Eastern Utah (July)Cumulonimbus & cumulus clouds

Page 37: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Western Colorado (July)Cumulonimbus & cumulus clouds

Page 38: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Eastern Utah (July)Cumulonimbus cloud

Page 39: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Death Valley N.P., CA (March)

Cumulonimbus cloudwith anvil

Page 40: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Death Valley N.P., CA (March)

Cumulonimbus cloudwith anvil

Page 41: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Mojave desert, CA(March)

Cumulonimbus cloudwith anvil

Page 42: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Northern New Mexico (Feb.)Cumulonimbus

cloud, snowing

Page 43: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Eastern Colorado (May)Cumulus cloud with

rotating mesocyclone

Page 44: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Eastern Colorado (May)Cumulus cloud w/rotating mesocyclone, dust updraft

Page 45: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

North Texas (May)Cumulus cloudw/wall cloud, tornado

Page 46: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Yellowstone N.P., WY (June)

Mammatus cloudsbeneath cumulus anvil

Page 47: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

S.E. Utah (August)Virga (evaporating rain)

Page 48: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

• Pileus cap cloud on cumulus cloud• Cirrus clouds

Page 49: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Baja California (Feb.)Orographic wave clouds

(lens clouds)

Page 50: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Cap cloud

Mt. St. Helens, WA (May 1979, before it’sMay 1980 eruption)

Page 51: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Cap cloud

Mt. St. Helens, WA (May 1979, before itsMay 1980 eruption)

Page 52: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Orographic Precipitation and Rain Shadow

Orographic Precipitation and Rain Shadow

Page 53: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

California Topography and Precipitation

California Topography and Precipitation

Page 54: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Temperate rainforest

Hoh rainforest, Olympic

National Park, WA• annual rainfall ~ 160”

Page 55: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

North American Deserts Great Basin Mohave Sonoran Chihuahuan

North American Deserts Great Basin Mohave Sonoran Chihuahuan

Page 56: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Sand dunes, Eureka Valley, Death Valley NP, CA

Page 57: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Precipitation Pattern, Maui, Hawaii

Precipitation Pattern, Maui, Hawaii

Page 58: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Hanakapiai Falls,

Na Pali coast,

Kauai, Hawai annual rainfall ~ 80”

Hanakapiai Falls,

Na Pali coast,

Kauai, Hawai annual rainfall ~ 80”

Page 59: Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology

Big Island of Hawaii Mauna Loa, Mauna Kea, prickly

pear cacti

Big Island of Hawaii Mauna Loa, Mauna Kea, prickly

pear cacti


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