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**The measurement is also the lowest pressure, '''850 millibars''', ever recorded at Earth's surface when adjusted for elevation. 850 mbar is normal air pressure at 1.5 km altitude. |
**The measurement is also the lowest pressure, '''850 millibars''', ever recorded at Earth's surface when adjusted for elevation. 850 mbar is normal air pressure at 1.5 km altitude. |
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*Highest wind speed ever recorded was '''480 km/h''' in the [[Wikipedia:1999 Bridge Creek–Moore tornado|1999 Bridge Creek–Moore tornado]]. |
*Highest wind speed ever recorded was '''480 km/h''' in the [[Wikipedia:1999 Bridge Creek–Moore tornado|1999 Bridge Creek–Moore tornado]]. |
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| − | *Violent tornadoes make up only 0.5% of all tornadoes but account for about half of all tornado deaths. |
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If supercells track to the right or left of the mean wind, they are said to be '''right-movers''' or '''left-movers''', respectively. Supercells can sometimes develop two separate updrafts with opposing rotations and [[Wikipedia:Splitting storm|split into 2 storms]]. A right-mover on the right and a left-mover on the left. |
If supercells track to the right or left of the mean wind, they are said to be '''right-movers''' or '''left-movers''', respectively. Supercells can sometimes develop two separate updrafts with opposing rotations and [[Wikipedia:Splitting storm|split into 2 storms]]. A right-mover on the right and a left-mover on the left. |
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The '''[[Wikipedia:Pacific decadal oscillation|Pacific Decadal Oscillation]]''' (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific basin. During a "warm", or "positive", phase, the west Pacific becomes cooler and part of the eastern ocean warms; during a "cool" or "negative" phase, the opposite pattern occurs.<ref>[[Wikipedia:Pacific decadal oscillation]]</ref> |
The '''[[Wikipedia:Pacific decadal oscillation|Pacific Decadal Oscillation]]''' (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific basin. During a "warm", or "positive", phase, the west Pacific becomes cooler and part of the eastern ocean warms; during a "cool" or "negative" phase, the opposite pattern occurs.<ref>[[Wikipedia:Pacific decadal oscillation]]</ref> |
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| − | The '''[[Wikipedia:Madden–Julian oscillation|Madden–Julian oscillation]]''' is a traveling pattern of enhanced rainfall that propagates eastward at approximately '''14 to 29 km/h''' (9 to 18 mph), through the atmosphere above the warm parts of the Indian and Pacific oceans (especially the South Pacific convergence zone). In the Pacific, MJO activity is typically greater during a La Niña episode and is virtually absent during the maxima of some El Niño episodes. Strong MJO activity is often observed 6 – 12 months prior to the onset of an El Niño episode. |
+ | The '''[[Wikipedia:Madden–Julian oscillation|Madden–Julian oscillation]]''' is a traveling pattern of enhanced rainfall that propagates eastward at approximately '''14 to 29 km/h''' (9 to 18 mph), through the atmosphere above the warm parts of the Indian and Pacific oceans (especially the South Pacific convergence zone). In the Pacific, MJO activity is typically greater during a La Niña episode and is virtually absent during the maxima of some El Niño episodes. Strong MJO activity is often observed 6 – 12 months prior to the onset of an El Niño episode. |
*The '''[[Wikipedia:Pacific–North American teleconnection pattern|Pacific–North American teleconnection pattern]]''' (PNA) is a large-scale weather pattern over the North Pacific Ocean and the North American continent. The negative phase of the PNA pattern features below-average barometric pressure in the vicinity of Hawaii and over the inter-mountain region of North America, and above-average pressure located south of the Aleutian Islands and over the southeastern United States. The negative phase tends to be associated with Pacific cold episodes (La Niña).<ref>[[Wikipedia:Pacific–North American teleconnection pattern]]</ref> This is not so much an oscillation as much as a simple observation that much of California's rain comes from atmospheric rivers that originate near Hawaii when the region around Hawaii is extremely wet due to the MJO. (California is almost completely dry during the summer.) |
*The '''[[Wikipedia:Pacific–North American teleconnection pattern|Pacific–North American teleconnection pattern]]''' (PNA) is a large-scale weather pattern over the North Pacific Ocean and the North American continent. The negative phase of the PNA pattern features below-average barometric pressure in the vicinity of Hawaii and over the inter-mountain region of North America, and above-average pressure located south of the Aleutian Islands and over the southeastern United States. The negative phase tends to be associated with Pacific cold episodes (La Niña).<ref>[[Wikipedia:Pacific–North American teleconnection pattern]]</ref> This is not so much an oscillation as much as a simple observation that much of California's rain comes from atmospheric rivers that originate near Hawaii when the region around Hawaii is extremely wet due to the MJO. (California is almost completely dry during the summer.) |
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#Hadley cell |
#Hadley cell |
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| − | During an ice_age the Earth only has two cells. Ice ages are probably caused by deforestation caused by megafauna |
+ | During an ice_age the Earth only has two cells. Ice ages are probably caused by deforestation caused by megafauna. |
#Polar cell |
#Polar cell |
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#Ferrel cell |
#Ferrel cell |
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*[https://svs.gsfc.nasa.gov/4285 Near Real-Time Global Precipitation] |
*[https://svs.gsfc.nasa.gov/4285 Near Real-Time Global Precipitation] |
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*[http://tropic.ssec.wisc.edu/real-time/mtpw2/product.php?color_type=tpw_nrl_colors&prod=global2×pan=120hrs&anim=html5 Gobal precipitable water] |
*[http://tropic.ssec.wisc.edu/real-time/mtpw2/product.php?color_type=tpw_nrl_colors&prod=global2×pan=120hrs&anim=html5 Gobal precipitable water] |
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| − | *[https://radar.weather.gov/Conus/full_loop.php US radar mosaic] |
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Drought: |
Drought: |
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