WPAC: NEPARTAK - Post-Tropical

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Re: WPAC: NEPARTAK - Severe Tropical Storm

#421 Postby CrazyC83 » Fri Jul 08, 2016 11:53 pm

1900hurricane wrote:I just thought of something. Does anyone know the sustained winds recorded by the buoy at the time of the 897 mb pressure reading? The NHC will take the surface winds measured by a recon dropsonde and subtract an additional millibar off the observed pressure for every 10 kt of winds observed to estimate the true central pressure. Could the same procedure be done here?


I believe the winds were not calm, but they had diminished - not sure exactly how much. I put 894 down on the BT idea for that.
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Re: WPAC: NEPARTAK - Severe Tropical Storm

#422 Postby euro6208 » Sat Jul 09, 2016 12:19 am

CrazyC83 wrote:
1900hurricane wrote:I just thought of something. Does anyone know the sustained winds recorded by the buoy at the time of the 897 mb pressure reading? The NHC will take the surface winds measured by a recon dropsonde and subtract an additional millibar off the observed pressure for every 10 kt of winds observed to estimate the true central pressure. Could the same procedure be done here?


I believe the winds were not calm, but they had diminished - not sure exactly how much. I put 894 down on the BT idea for that.


One thing to consider is the location of this buoy? How far was it from the eye? Hopefully we can get more details on that.

Even a few miles away can mean a big difference.
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Re: WPAC: NEPARTAK - Severe Tropical Storm

#423 Postby stormwise » Sat Jul 09, 2016 1:01 am

When its all said and done its likely JTWC estimates will hold solid.

MAXIMUM SIGNIFICANT WAVE HEIGHT AT 090000Z IS 10 FEET. NEXT
WARNINGS AT 090900Z, 091500Z, 092100Z AND 100300Z.//
0216070106 75N1453E 15
0216070112 76N1449E 15
0216070118 77N1447E 20
0216070200 78N1446E 20
0216070206 80N1447E 20
0216070212 82N1448E 20
0216070218 85N1449E 20
0216070300 88N1450E 30
0216070306 95N1447E 35
0216070312 102N1440E 40
0216070318 109N1430E 45
0216070400 118N1419E 45
0216070406 127N1408E 45
0216070412 135N1397E 50
0216070418 146N1382E 60
0216070418 146N1382E 60
0216070500 154N1367E 70
0216070500 154N1367E 70
0216070506 163N1351E 90
0216070506 163N1351E 90
0216070506 163N1351E 90
0216070512 172N1335E 120
0216070512 172N1335E 120
0216070512 172N1335E 120
0216070518 180N1318E 130
0216070518 180N1318E 130
0216070518 180N1318E 130
0216070600 187N1301E 140
0216070600 187N1301E 140
0216070600 187N1301E 140
0216070606 195N1284E 150
0216070606 195N1284E 150
0216070606 195N1284E 150
0216070612 202N1269E 150
0216070612 202N1269E 150
0216070612 202N1269E 150
0216070618 207N1256E 150
0216070618 207N1256E 150
0216070618 207N1256E 150
0216070700 212N1243E 150
0216070700 212N1243E 150
0216070700 212N1243E 150
0216070706 216N1234E 145
0216070706 216N1234E 145
0216070706 216N1234E 145
0216070712 220N1226E 140
0216070712 220N1226E 140
0216070712 220N1226E 140
0216070718 224N1218E 130
0216070718 224N1218E 130
0216070718 224N1218E 130
0216070800 226N1208E 90
0216070800 226N1208E 90
0216070800 226N1208E 90
0216070806 230N1200E 80
0216070806 230N1200E 80
0216070806 230N1200E 80
0216070812 233N1197E 70
0216070812 233N1197E 70
0216070812 233N1197E 70
0216070818 234N1197E 60
0216070818 234N1197E 60
0216070900 244N1190E 45
NNNN
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Re: WPAC: NEPARTAK - Post-Tropical

#424 Postby cycloneye » Sat Jul 09, 2016 7:50 am

JMA last warning was issued.
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Re: WPAC: NEPARTAK - Post-Tropical

#425 Postby stormwise » Tue Jul 12, 2016 1:45 am

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Re: WPAC: NEPARTAK - Post-Tropical

#426 Postby cycloneye » Sat Jul 23, 2016 1:38 pm

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Re: WPAC: NEPARTAK - Post-Tropical

#427 Postby 1900hurricane » Mon Aug 29, 2016 11:44 pm

JMA lowered peak intensity to 110 kt.

Why?
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Re: WPAC: NEPARTAK - Post-Tropical

#428 Postby NotoSans » Thu Sep 15, 2016 8:44 am

https://www.wunderground.com/blog/JeffM ... -open-atla
According to this blog entry, the barometer of the buoy that recorded the 897 mb pressure has been calibrated. The data has been corrected to 911.5 mb.
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Re: WPAC: NEPARTAK - Post-Tropical

#429 Postby euro6208 » Mon Sep 19, 2016 4:28 am

Still 911.5 is very impressive directly passing over a Buoy!
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Re: WPAC: NEPARTAK - Post-Tropical

#430 Postby NotoSans » Sat Nov 05, 2016 12:30 pm

Lowest pressure recorded by automated weather stations near the landfall location was around 940 mb according to CWB.
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