psyclone wrote:RL3AO wrote:psyclone wrote:Why does the NWS issue a severe thunderstorm warning for winds up to 60mph when said area is already under a TS warning which technically covers winds up to 64kt?
I think it's a combo of these winds relating more to mixing of cold and dry air downward instead of from the pressure gradient of the TS. Plus it's impacting a major population center during rush hour so the extra warning was probably good. Radio and TV would break in for the new thunderstorm warning but not for the continuing tropical storm warning. Also I just lost power and I was only on the edge with 30 to 40 mph gusts.
I think they should pick one and go with it. It's redundant. They could have easily have issued a special weather statement about the incoming winds (which have already been warned for with a TS warning) or they could have dumped the tropical headlines in favor of a high wind warning...which could have been more time specific wrt timing
Given the fact wind gusts are 60-70 mph at their peak, it calls for a warning. But this is definitely a grey area. A High Wind Warning would mean that the gradient of the system is producing severe winds. A Severe Thunderstorm Warning would be for the individual cells or lines, and in this case there is definitely a convective setup of Michael, almost behaving like a squall line. A Tropical Storm Warning would be for the combined impact of a tropical storm, but is typically seen as a longer duration warning (like a HWW). In a short-fuse situation, the thought of a SVR may be warranted, even if redundant from an impact perspective. Have there been severe winds reported, outside of the immediate coast, from the general circulation and not just from the pseudo-squall line? (BTW, I would consider Michael as extratropical now personally)
As for a Special Weather Statement, who pays attention to them?