ATL: IRMA - Post-Tropical - Discussion

[KBBOCA]

Keraunos‏Verified account @KeraunosObs 2m2 minutes ago

Quadrant sud-est du mur de l’œil plus violent que la partie nord-ouest actuellement sur les Keys d'après dernières données avion. #Irma

Southeast quadrant of the wall of the eye more violent than the northwestern part currently on the Keys according to latest data plane. #Irma

 https://twitter.com/KeraunosObs/status/906854983211081728

[O Town]

I'm not sure where this guy is. Somewhere in the lower keys. Idiotic really.

Juston Drake‏ @JustonStrmRider 4m4 minutes ago

@SimonStormRider getting wind measurements out in the eyewall as well. Got a 117 mph wind gust.

[embedded video clip]

 https://twitter.com/JustonStrmRider/status/906852342720495626

lol, he's lucky. As silly as it may look a helmet may not be a bad idea... but if a branch impales your body the helmet is useless I suppose.

[GCANE]

Product: Air Force Vortex Message (URNT12 KNHC)

A. Time of Center Fix: 10th day of the month at 12:03:20Z
B. Center Fix Coordinates: 24°30'N 81°31'W (24.5N 81.5167W)
B. Center Fix Location: 17 statute miles (28 km) to the ESE (104°) from Key West, FL, USA.

D. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 110kts (~ 126.6mph)
E. Location of the Estimated Maximum Surface Wind Inbound: 9 nautical miles (10 statute miles) to the NW (315°) of center fix
F. Maximum Flight Level Wind Inbound: From 54° at 103kts (From the NE at ~ 118.5mph)
G. Location of Maximum Flight Level Wind Inbound: 11 nautical miles (13 statute miles) to the NW (315°) of center fix

H. Minimum Sea Level Pressure: 931mb (27.50 inHg)

I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 13°C (55°F) at a pressure alt. of 3,051m (10,010ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 18°C (64°F) at a pressure alt. of 2,989m (9,806ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 14°C (57°F)

L. Eye Character: Open in the south, S
M. Eye Shape: Not Available

Remarks Section:
Maximum Outbound and Flight Level Wind: 121kts (~ 139.2mph) which was observed 12 nautical miles (14 statute miles) to the ESE (121°) from the flight level center at 12:09:00Z
Dropsonde Surface Wind at Center: From 160° at 6kts (From the SSE at 7mph)
Maximum Flight Level Temp: 18°C (64°F) which was observed 6 nautical miles to the NW (317°) from the flight level center

[KBBOCA]

Michael Ventrice‏Verified account @MJVentrice 4m4 minutes ago

The eye of Major #HurricaneIrma has just engulfed the Florida Keys. U.S. landfall estimated to be 8:15AM, though wait for official word.

[KBBOCA]

 https://twitter.com/JimCantore/status/906855936869978112




Jim Cantore‏Verified account @JimCantore 3m3 minutes ago

Wind right at the Doppler radome for @NWSKeyWest Likely close to ground truth.

[embedded video]

[KBBOCA]

 https://twitter.com/AdamBergNBC6/status/906856408456548352




NWS Key West Retweeted
Adam Berg‏Verified account @AdamBergNBC6 3m3 minutes ago

Recent 91mph wind gust at #KeyWest to go along with 71 mph at #MIA and #FortLauderale (FXE) @nbc6

[Slughitter3]

Weather nation is saying the southern eyewall is "open to the South" and the south side has no thunderstorms they're showing via radar. Newb here, is that accurate?

Sent from my SAMSUNG-SM-G890A using Tapatalk

[johngaltfla]

Weather nation is saying the southern eyewall is "open to the South" and the south side has no thunderstorms they're showing via radar. Newb here, is that accurate?

Sent from my SAMSUNG-SM-G890A using Tapatalk

Yes, confirmed by vortex msg from the Hurricane Hunters.

[KBBOCA]

Eric Fisher‏Verified account @ericfisher 3m3 minutes ago

Important for much of SW FL...winds blowing out to sea ahead of eye...the wall of water will rush in *after* eye passes north. #Irma


Eric Fisher‏Verified account @ericfisher 2m2 minutes ago

Here's a visual on that water getting pushed out to sea currently ->

Mackenzie Bart‏Verified account @mbartwx

Wow! Fort Myers beach almost looks drained...water going out due to strong offshore winds #TrackingIrma

 https://twitter.com/mbartwx/status/906857028529815553

[Slughitter3]

Weather nation is saying the southern eyewall is "open to the South" and the south side has no thunderstorms they're showing via radar. Newb here, is that accurate?

Sent from my SAMSUNG-SM-G890A using Tapatalk

Yes, confirmed by vortex msg from the Hurricane Hunters.

Thank you!

Sent from my SAMSUNG-SM-G890A using Tapatalk

[NDG]

[JtSmarts]

Irma's eyewall looks very similar to Ivan's as it was making landfall. I think it had that big hole to the south as well.

[GCANE]

About 45 mm/hr rain rate in the northern eyewall.
Amazing how this thing sucked the juice out of the GOM, take a look at MIMIC-TPW.

http://tropic.ssec.wisc.edu/real-time/m ... anim=html5

Almost due north track, could see a little more intensification next couple hours.
IMHO, it'll then start to impact with 200mb PV and should start to cap off and weaken slowly.

[KBBOCA]

 https://twitter.com/hurricanetrack/status/906858031643807744




Mark Sudduth‏Verified account @hurricanetrack 3m3 minutes ago

74 mph gust in Marathon from our RM Young anemometer just now

[PandaCitrus]

That's a very scary picture. When the water goes out like that, they warn people a tsunami is coming and to run for your life.

[GCANE]

http://www.spc.noaa.gov/products/md/md1637.html

Mesoscale Discussion 1637
NWS Storm Prediction Center Norman OK
0732 AM CDT Sun Sep 10 2017

Areas affected...Florida Keys...South and Central Florida Peninsula

Concerning...Tornado Watch 482...

Valid 101232Z - 101430Z

The severe weather threat for Tornado Watch 482 continues.

SUMMARY...The tornado threat associated with Hurricane Irma, will
continue along across the southern and central Florida Peninsula
this morning. A tornado or two may occur with the greatest threat
along the coast from Miami northward into east-central Florida.

DISCUSSION...The National Hurricane Center is forecasting the center
of Hurricane Irma to continue moving north-northwestward over the
next few hours from just to the east of Key West into the open
waters north of the Florida Keys. Rainbands extend northward about
300 statute miles from Irma's center. One band of convection is
present from the central Florida peninsula extending
east-southeastward to near Palm Beach. Another broader band of
convection is located to the south of Lake Okeechobee extending
southeastward to near the coast at Miami. The stronger instability
is analyzed to the northeast of Lake Okeechobee according to the RAP
with MLCAPE values in the 1000 to 2000 J/kg range. This combined
with strong low-level shear according to the Melbourne and Miami
WSR-88D VWPs will continue to be favorable for a tornado threat.
Tornadoes will most likely occur with discrete rotating cells that
move inland along the east coast of Florida this morning.

..Broyles/Edwards.. 09/10/2017

[KBBOCA]

A lot of my Twitter feed this am is full of discussions from folks complaining in Miami Dade that there is no live radio broadcast of hurricane info. Incredible!
There are several hundred thousands without power in area. Irresponsible...

Jennifer Gonzalez‏ @jrodgonz 8m8 minutes ago
Replying to @JohnMoralesNBC6

I can't believe @WIOD and @Y100MIAMI stopped broadcasting. There are lot of people out there who can only get their info that way. Shameful.
1 reply 4 retweets 3 likes

[KBBOCA]

Mark Sudduth‏Verified account @hurricanetrack 2m2 minutes ago

Our Marathon Florida weather station and live camera knocked off the air – perhaps understandable with a category 4 hurricane nearby



Mark Sudduth‏Verified account @hurricanetrack 2m2 minutes ago

For what it's worth and for the purpose of science it's worth a lot, the weather data will continue to record internally on the computer.

[meriland29]

What's her recent recon winds at? I see she is at 130 on nhc

[KBBOCA]

Michael Ventrice‏Verified account @MJVentrice 4m4 minutes ago

A ton of wobbling going with the eye of Major #HurricaneIrma; Models don't handle these types of motions well.

[embeded satellite clip]

 https://twitter.com/MJVentrice/status/906859483644784640