“This looks like January, not July,”says Cliff Mass on his Weather and Climate Blog.
18 July 2019 – It was “an extraordinary weather event,” says Mass. “A record that was not only broken, but shattered to little pieces,”
“The jet stream is a narrow current of strong winds in the upper troposphere (roughly 25,000 ft to 35,000 ft above sea level). It is often the conduit for storms and is associated with a large temperature gradient (change in temperature with horizontal distance) in the middle and lower troposphere. Winds in the jet stream are westerly (from the west) and aircraft like to fly in the jet stream going east, while avoiding it going west. You are now Jet Steam certified!
“The ECMWF 12-h forecast for 5 AM this morning for the wind speed at the 250 hPa pressure level (about 35,000 ft) clearly shows the jet stream, with the orange/red colors being the strongest winds.
“This is a HUGE and very zonal (east-west oriented) jet stream,” says Mass. “This looks like January, not July.”:
“The previous record was around 110 knots…so the 140 knots observed today absolutely shattered the record. In fact, the wind over us right now is greater then the records for any date from April 1 to mid-October.
“A truly unusual event. And one that should not be pinned on global warming.”
Clifford F. “Cliff” Mass is a professor of Atmospheric Sciences at the University of Washington.
See entire blog entry, including maps and graphs:
Thanks to Jimmy Walter for this link