MikeC
Admin
Reged: Sun
Posts: 4543
Loc: Orlando, FL
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Latest recon in the last few minutes supports 70mph in the northeast part of the system. This is an odd hybrid subtropical storm and very dry, relative to others. I can't really recall anything like it I've seen recently.
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Prospero
Storm Tracker
Reged: Fri
Posts: 267
Loc: Gulfport, FL
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Is there such a thing as a "dry" hurricane??
Almost what it looks like...
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Gulfport Florida Webcam - Gulfport Florida Weather Station - Clearwater Beach Cams
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MikeC
Admin
Reged: Sun
Posts: 4543
Loc: Orlando, FL
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Recon's found a little lower pressure with 991mb, and the storm actually moved a bit southwest (doing a cyclonic loop?) 28.2N 85.85W
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cieldumort
Moderator
Reged: Mon
Posts: 2305
Loc: Austin, Tx
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Not sure if flight-level winds are efficiently mixing down to the surface, except in what could be more or less microbursts due to dry air, in which case I would expect surface winds in the mean to be running closer to 40-50, but gusting much higher (70, perhaps even higher). Alberto sure looks like what we typically see of a tropical cyclone undergoing transition, more so than the other way around. But I think a compelling case could be made to start calling him more tropical, than not.
Very latest pass through now showing a SW jog, and further lowering of central pressure. Quote:
Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 28th day of the month at 1:40Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF97-5306
Storm Number & Year: 01 in 2018
Storm Name: Alberto (flight in the North Atlantic basin)
Mission Number: 5
Observation Number: 14
A. Time of Center Fix: 28th day of the month at 1:30:40Z
B. Center Fix Coordinates: 28°10'N 85°51'W (28.1667N 85.8500W)
B. Center Fix Location: 139 statute miles (224 km) to the S (185°) from Panama City, FL, USA.
C. Minimum Height at Standard Level: 1,340m (4,396ft) at 850mb
D. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 46kts (52.9mph)
E. Location of the Estimated Maximum Surface Wind Inbound: 33 nautical miles (38 statute miles) to the NE (35°) of center fix
F. Maximum Flight Level Wind Inbound: From 128° at 64kts (From the SE at 73.6mph)
G. Location of the Maximum Flight Level Wind Inbound: 40 nautical miles (46 statute miles) to the NE (37°) of center fix
H. Minimum Sea Level Pressure: 991mb (29.27 inHg)
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 15°C (59°F) at a pressure alt. of 1,525m (5,003ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 19°C (66°F) at a pressure alt. of 1,523m (4,997ft)
K. Dewpoint Temp & Sea Surface Temp: Not Available
L. Eye Character: Not Available
M. Eye Shape: Not Available
N. Fix Determined By: Penetration, Wind, Pressure and Temperature
N. Fix Levels (surface & flight level centers within 5nm of each other): Surface and 850mb
O. Navigational Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 4 nautical miles
Remarks Section:
Maximum Flight Level Wind: 64kts (~ 73.6mph) which was observed 40 nautical miles (46 statute miles) to the NE (37°) from the flight level center at 1:18:00Z
Dropsonde Surface Wind at Center: From 95° at 2kts (From the E at 2mph)
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cieldumort
Moderator
Reged: Mon
Posts: 2305
Loc: Austin, Tx
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Doombot!
Weather Guru
Reged: Sat
Posts: 160
Loc: Lakeland, Fl.
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Agreed that this is an odd one. Just a little breeze and mostly dry near Legoland.
I'm starting to think that the beginning of and end of seasons are going to becoming the frontiers of hurricane research.
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OrlandoDan
Weather Master
Reged: Mon
Posts: 443
Loc: Longwood, FL
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What in the world is that convection over Cuba?
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Keith (1988), Charley (2004), Frances (2004) , Jeanne (2004), Fay (2008), Mathew (2016), Irma (2017), Dorian (2019)
Personal Weather Station: https://www.wunderground.com/dashboard/pws/KFLLONGW67
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cieldumort
Moderator
Reged: Mon
Posts: 2305
Loc: Austin, Tx
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