ATL: HANNA - Remnants - Discussion

[GCANE]

I have never seen a hot tower bomb out with such a fast and wide spread cirrus anvil like this one.

[wxman57]

Center is moving right over a buoy SE of CRP. Buoy has NNW wind 10 kts and 977.8 mb

[Highteeld]

extrap down to 971, probably near 973 with dropsonde

[xironman]

Here we go.
Tornadoes may be the worst part of it.

https://twitter.com/NWStornado/status/1287079744337395712/photo/1

The SPC is pretty quiet on it.

[wx98]

Down to 971...

[Highteeld]

83/73 in the NE quad (knots)

[Aric Dunn]

Looks like Port Mansfield will take the brunt of the backside with this increased wsw motion.

[Highteeld]

probably good for a 75 knot landfall (unless SE quad is stronger)

[wxman57]

Looking like 75 kts for landfall. Eye fairly ragged. Not sure it can wrap up more since it's already partly on coast.

[GCANE]

Here we go.
Tornadoes may be the worst part of it.

https://twitter.com/NWStornado/status/1287079744337395712/photo/1

The SPC is pretty quiet on it.

They issued a MD a couple hours ago but no watches yet.

[Hypercane_Kyle]

FL winds 83 knots, SFMR 73 knots. Good case for 75 knots, MSLP ~973 mb.

[aspen]

Peak FL winds of almost 85 kt, pressure down to ~971 mbar.

[chaser1]

https://webcams.windy.com/webcams/stream/1486829163 the storm surge is getting dangerous. I've never seen the waves above Bob Hall Pier.

Nice link!

[wxman57]

Almost 10mb lower pressure than Douglas, but Douglas has smaller eye and, thus, a tighter pressure gradient. Only 75 kts in Douglas so far, though.

[tiger_deF]

Higher total should be coming up in the sw quadrant though

[CrazyC83]

Agreed that barring additional data the landfall intensity should be 75 kt.

[GCANE]

 https://twitter.com/iCyclone/status/1287089352028434434

[wx98]

Several unflagged ~75 kt SFMR on the SW side

[Hybridstorm_November2001]

I'll be interested to see if Hanna can reach cat 2 before it makes landfall. I think It'll top out around 95 mph.

Stay safe everyone.

[Airboy]

roduct: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 25th day of the month at 18:16Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF98-5307
Storm Number & Year: 08 in 2020
Storm Name: Hanna (flight in the North Atlantic basin)
Mission Number: 7
Observation Number: 06

A. Time of Center Fix: 25th day of the month at 17:59:20Z
B. Center Fix Coordinates: 26.85N 96.93W
B. Center Fix Location: 68 statute miles (110 km) to the SSE (155°) from Corpus Christi, TX, USA.
C. Minimum Height at Standard Level: 2,901m (9,518ft) at 700mb
D. Minimum Sea Level Pressure: 976mb (28.82 inHg)
E. Dropsonde Surface Wind at Center: From 330° at 27kts (From the NNW at 31mph)
F. Eye Character: Open in the northeast
G. Eye Shape & Diameter: Circular with a diameter of 50 nautical miles (58 statute miles)
H. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 73kts (84.0mph)
I. Location & Time of the Estimated Maximum Surface Wind Inbound: 24 nautical miles (28 statute miles) to the NE (45°) of center fix at 17:52:30Z
J. Maximum Flight Level Wind Inbound: From 134° at 83kts (From the SE at 95.5mph)
K. Location & Time of the Maximum Flight Level Wind Inbound: 28 nautical miles (32 statute miles) to the NE (45°) of center fix at 17:51:30Z
L. Estimated (by SFMR or visually) Maximum Surface Wind Outbound: 75kts (86.3mph)
M. Location & Time of the Estimated Maximum Surface Wind Outbound: 14 nautical miles (16 statute miles) to the SW (228°) of center fix at 18:03:30Z
N. Maximum Flight Level Wind Outbound: From 331° at 82kts (From the NNW at 94.4mph)
O. Location & Time of the Maximum Flight Level Wind Outbound: 21 nautical miles (24 statute miles) to the SW (228°) of center fix at 18:05:30Z
P. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 11°C (52°F) at a pressure alt. of 3,053m (10,016ft)
Q. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 18°C (64°F) at a pressure alt. of 3,051m (10,010ft)
R. Dewpoint Temp (collected at same location as temp inside eye): 16°C (61°F)
R. Sea Surface Temp (collected at same location as temp inside eye): Not Available
S. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
S. Fix Level: 700mb
T. Navigational Fix Accuracy: 0.02 nautical miles
T. Meteorological Accuracy: 3 nautical miles