System 90Q: Mystery or Mys-take?
Posted by feww on March 11, 2010
“90Q: A curious short-lived ‘tropical’ cyclone in the southern Atlantic”
System 90Q, a low pressure system was located near 29.8ºS and 48.2ºW, about 290 km (180 miles) east of Puerto Alegre, off the coast of Brazil, on Wednesday, March 10 at 14:00 UTC, reportedly with maximum sustained winds about 63km/h (39 mph, or 35 knots), about a click weaker than an official tropical storm), NASA/Goddard Space Flight Center reported, acknowledging that south Atlantic waters are typically too cool to spawn tropical cyclones.
GOES-12 captured a visible image of System 90Q at 14:45 UTC on March 11, which appears “as a small circular area of clouds off the Brazilian coast.” GFS said.
The GOES-12 satellite captured this visible image of System 90Q at 14:45 UTC (9:45 a.m. ET) on March 10, 2010. 90Q is the small circular area of clouds (lower left center). Credit: NASA GOES Project
It becomes curiouser if you examine the SST anomalies in the area where “90Q” was allegedly formed.