3:43pm EDT sonde: 984mb with 20 knots of surface wind
Posted by Chris in Tampa on 9/17/2017, 4:13 pm
The pressure continues to drop. Latest pass (3:43pm EDT) 984mb with 20 knots of surface wind. Previous pass (1:58pm EDT) was 986mb with 3 knots of surface wind. So from about 986mb to about 982mb perhaps in under two hours. NHC had estimate much higher pressure, 994mb at 2pm EDT. (this is the first recon into the storm)

Most recent pass:

30s flight level winds: 62 knots (71.3 mph)
10s flight level winds: 63 knots (72.5 mph)

10s estimated surface winds on most recent pass:

SW quadrant: 60 knots (69.0 mph)
NE quadrant: 57 knots (65.6 mph)

Earlier, when coming through the NW quadrant and then more from the north before they hit the center:

64 kts (73.6 mph) 10 second estimated surface winds.

30s flight level winds at the time were just 55 knots (63.3 mph) though.

They'll probably go with at least 70mph at 5pm.
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  • 3:43pm EDT sonde: 984mb with 20 knots of surface wind - Chris in Tampa, 9/17/2017, 4:13 pm
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