Скачать или смотреть The Track of Hurricane Sam (2021)

Hurricane Sam was a powerful hurricane during late September which only brought minor impacts to land.
Music Credits:
Force Thirteen - Monsoon Season
Force Thirteen - In Summary (Storm List)
   / forcethirteen   and https://nathanfoy.bandcamp.com/

(NOTE: Nathan Foy, the admin of Force Thirteen, has given Khan Storm Tracking explicit permission to use the music for this video.)

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Our reasoning for our analysis:
Late on September 26th, a reconnaissance aircraft entered Sam, and, when a sonde was dropped into the eye, found 932 with 31 kt winds, which translates to 929 millibars. By the time the aircraft surveyed Sam's strongest Northeast quadrant, support for only about 130 knots could be found, but, as, by 74 minutes after the 929 sonde was dropped, another one was dropped into the eye and found a pressure of 943 millibars, it can be reasonably assumed that quick weakening was coinciding with the near-explosive pressure filling. The rapid increase in the minimum central pressure was caused by the collapse of Sam's inner eyewall, which caved in just when recon entered the storm. This was visible on satellite imagery, with rapid contraction of the eye, not accompanied by any eyewall lightning observed. This is always a sign of weakening. We can assume, as such, that Sam was of an approximately 135 knot intensity when a reconnaissance aircraft found 929 millibars. This aligns with the CKZ values to within 2 millibars. As Sam's structure was degrading rather rapidly when the aircraft entered the storm, an intensity of 140 knots between 12z and 18z is recommended. This is assessed as the overall peak of Sam. the 924 value aligns with CKZ and makes sense given the observed rate of deepening, and its likely slower, but still existent pace pre-recon.

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