Dropsonde measured some high momentary winds
Posted by Chris in Tampa on 8/27/2020, 12:28 am
http://hurricanecity.com/recon/recon.cgi?basin=al&year=2020&product=sonde&storm=Laura&mission=25&agency=AF&ob=08-27-0349-25-954-165-142

For the surface it measured 142 knots (163 mph).

These are momentary winds. I think maybe a quarter second. However, I also like to look at how it averages above the surface. I forget how you estimate what the surface might be from there:

For the surface it measured 142 knots (163 mph).

Mean Boundary Level Wind (mean wind in the lowest 500 geopotential meters of the sounding):
- Wind Direction: 105° (from the ESE)
- Wind Speed: 149 knots (171 mph)

Average Wind Over Lowest Available 150 geopotential meters (gpm) of the sounding:
- Lowest 150m: 157 gpm - 7 gpm (515 geo. feet - 23 geo. feet)
- Wind Direction: 100° (from the E)
- Wind Speed: 151 knots (174 mph)




Previous high surface momentary wind was 128 kts (147.3 mph) in this storm. It's hard to get a sonde to land in the right spot of course, so you are going to sometimes hit high winds and sometimes miss it.
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10pm CDT Wed: 150mph; 939mb; Extremely dangerous hurricane Laura closing in on the northwest Gulf coast - Chris in Tampa, 8/26/2020, 10:55 pm
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