10/31/20 - current Hurricane Eta · 2020. 11. 9. · SIO15 – 11/09/20 Recent Events 10/31/20 -...
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SIO15 – 11/09/20 Recent Events 10/31/20 - current Hurricane Eta 10/28 NHC began monitoring 11/1 Tropical Storm Eta 11/3 Cat 4 off Nicaragua stalled/dissipated/RAIN! 11/5 Honduras as TD re-strengthened into TS 11/7 Cuba pre-tropical cyclone tropical “vigorous tropical wave”
Transcript of 10/31/20 - current Hurricane Eta · 2020. 11. 9. · SIO15 – 11/09/20 Recent Events 10/31/20 -...
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta
Type: “hybrid”?
10/28 NHC began monitoring 11/1 Tropical Storm Eta 11/3 Cat 4 off Nicaragua stalled/dissipated/RAIN! 11/5 Honduras as TD re-strengthened into TS 11/7 Cuba
pre-tropical cyclone
tropical
“vigorous tropical wave”
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta
forecast: weird excursion into GoM
11/9 hurricane 11/13 landfall as TS in NW FL
11/8 south FL/Keys under hurricane warning
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta
Type: “hybrid”?
second-most intense Nov hurricane (after 1932 Cuba hurricane)
pre-tropical cyclone
tropical
“vigorous tropical wave”
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta hurricanes need • warm ocean water • calm upper-level atmosphere
warm waters allowed Eta to strengthen explosively
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta 11/3 prior to landfall in Nicaragua
well-developed eye
rainbands over massive area
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta
central America torrential rain -> mudslides, landslides, flash floods
235 fatalities ! 150 Guatemala ! 41 Honduras ! 22 Mexico ! 17 Panama ! 2 Costa Rica ! 2 Nicaragua ! 1 El Salvador
landslide in Queja buried 150 homes
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta
Deutsche Welle, Guatemala
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta BBC, Honduras
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SIO15 – 11/09/20 Recent Events
10/31/20 - current Hurricane Eta 12th hurricane of season
record-tying 28th named storm in exceptionally busy season
most powerful in 2020 Atlantic season
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SIO15 – 11/09/20 Recent Events
2020 Atlantic Hurricane Season in terms of # of named storms record-tying with 2005
TS Cristobal (6/1-12)
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SIO15 – 11/09/20 Recent Events
2020 Atlantic Hurricane Season hurricane season: June-October
stronger ones/more typically after late Aug after ocean warmed
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SIO15 – 11/09/20 Recent Events
annotated after lecture:this is actually the remnantsof Tropical Storm Odalys off Baja California
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SIO15 – 11/09/20 Recent Events
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SIO15 – 11/09/20 Recent Events
dry air on ground upper-level clouds -> sunset ‘afterglow’ when sun below horizon illuminates high clouds
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SIO15 – 11/09/20 Recent Events
Q: if this was from a TS, why was air on ground so low?A: I do not have a clear answer, but air on the ground experienced quick blast of hot air. Air may not have been able to adjust and take up more moisture fast enough to raise relative humidity. The consequence then is that rain may fall in the upper atmosphere but never reaches the ground (virga).
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SIO15 – 11/09/20 Recent Events
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SIO15 – 11/09/20 Recent Events
heating by distant TS Odalys from S
cold front/ winter storm from NW
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SIO15 – 11/09/20 Recent Events
Mt Merapi acting up Mt Merapi most active in Indonesia one of 16 decade volcanoes
last significant eruption 2010 19,000 told to evacuate unclear how many did 353 fatalities
2018 phreatic eruption closed Yogyakarta Int. airport
evacuations ongoing currently 300
GVP website has no info (lists June activity)
