ATL: IRMA - Post-Tropical - Discussion

[storm_in_a_teacup]

Cloud tops looking like they're trying to take the next step up on BD imagery. CMGs have almost built a complete ring.

What's a CMG?

(I know a CME is a coronal mass ejection but I'm pretty sure this is unrelated.)

CMG stands for cold medium grey which is the second coldest temperature a storms cloud top can reach, CDG (Cold Dark Grey) being the coldest. It signifies an extremely intense storm.

I keep meaning to learn the Dvorak technique, but I haven't had the time. I'm supposed to be thinking about astrophysics, not atmospheric physics.

Unfortunately this season keeps drawing my attention to the latter. Maybe I can convince my advisor these are all images of galaxies? (Too late)

[storm_in_a_teacup]

What's a CMG?

(I know a CME is a coronal mass ejection but I'm pretty sure this is unrelated.)

CMG stands for cold medium grey which is the second coldest temperature a storms cloud top can reach, CDG (Cold Dark Grey) being the coldest. It signifies an extremely intense storm.

I keep meaning to learn the Dvorak technique, but I haven't had the time. I'm supposed to be thinking about astrophysics, not atmospheric physics.

Unfortunately this season keeps drawing my attention to the latter. Maybe I can convince my advisor these are all images of galaxies? (Too late. He was like "is that a bipolar outflow from a galaxy" and I was like "no. Hurricane Irma.")

Don't know why this was a double post. Okay fine, mobile, I'll add some more content. Bipolar outflows in galaxies are generally taken to be signs of intense star formation. While spiral galaxies are often compared to hurricanes in appearance, the physics behind them is very different.

[znel52]

Man I did not expect this storm to be able to maintain this long much less keep improving. It's core has it's coldest clout tops yet! This thing is an ACE monster. Prayers to everyone who went through this storm and those that still have to.

[Extratropical94]

URNT15 KNHC 061916
AF305 1311A IRMA HDOB 41 20170906
190730 1714N 06505W 6967 03138 0035 +090 +081 256035 036 040 003 00
190800 1714N 06503W 6967 03138 0035 +090 +080 255039 040 041 001 00
190830 1714N 06501W 6967 03138 0037 +090 +082 253040 040 040 001 00
190900 1714N 06459W 6969 03138 0038 +089 +081 256037 039 040 002 00
190930 1715N 06456W 6965 03140 0034 +090 +079 257039 041 041 002 00
191000 1715N 06454W 6970 03137 0037 +090 +085 255038 040 042 001 00
191030 1715N 06452W 6963 03144 0036 +091 +084 251038 039 042 002 00
191100 1715N 06450W 6965 03142 0034 +093 +078 249038 040 043 001 00
191130 1715N 06448W 6967 03140 0034 +095 +075 244038 039 042 001 00
191200 1715N 06446W 6969 03139 0028 +099 +069 244037 040 042 001 00
191230 1715N 06444W 6965 03144 0030 +098 +080 239040 040 041 002 00
191300 1715N 06441W 6969 03139 0026 +101 +082 235038 041 038 002 00
191330 1715N 06439W 6967 03139 0031 +092 +084 235042 043 039 002 01
191400 1715N 06437W 6967 03140 0036 +090 +085 235042 042 038 002 00
191430 1715N 06435W 6971 03133 0034 +092 +083 235042 043 037 002 00
191500 1715N 06433W 6966 03140 0032 +092 +086 233042 042 037 001 00
191530 1715N 06431W 6965 03142 0035 +089 +087 231040 042 037 002 01
191600 1715N 06429W 6963 03144 //// +088 //// 226040 041 038 002 01
191630 1715N 06427W 6969 03138 0035 +090 +087 225042 042 039 002 01
191700 1716N 06424W 6970 03137 //// +078 //// 222043 044 039 002 01

[SunnyThoughts]

https://mobile.twitter.com/RyanMaue/sta ... 2710540288

[orion]

Interesting to see NCAR/UCAR chiming in with the MPAS model...

http://www2.mmm.ucar.edu/imagearchive/m ... 2017090600

[BYG Jacob]

What's a CMG?

(I know a CME is a coronal mass ejection but I'm pretty sure this is unrelated.)

CMG stands for cold medium grey which is the second coldest temperature a storms cloud top can reach, CDG (Cold Dark Grey) being the coldest. It signifies an extremely intense storm.

There's some CDG in the western eye wall which is indicating intensification

Yes, really not good.

[znel52]

Does anybody know what the highest Dvorak rated storm in the Atlantic was? Gilbert? Whatever the record is this has to be giving it a run for its money.

[GCANE]

 https://twitter.com/OnceNoticiasTV/status/905510792203821056

[1900hurricane]

What's a CMG?

(I know a CME is a coronal mass ejection but I'm pretty sure this is unrelated.)

CMG stands for cold medium grey which is the second coldest temperature a storms cloud top can reach, CDG (Cold Dark Grey) being the coldest. It signifies an extremely intense storm.

I keep meaning to learn the Dvorak technique, but I haven't had the time. I'm supposed to be thinking about astrophysics, not atmospheric physics.

Unfortunately this season keeps drawing my attention to the latter. Maybe I can convince my advisor these are all images of galaxies? (Too late)

If you need a source for the Dvorak Technique, here is a great module from MetEd (registration is free!).

[ScottNAtlanta]

Ok...today I'm thinking I need to go get plywood. Its looking more and more like we are going to have a landfall here. Is anyone else in the area doing the same? SC Gov. just declared a state of emergency here

As a side note...is there a thread topic for people to discuss preparation for this storm other than the discussion thread?

[gboudx]

Is Luis/cycloneye in San Juan, or another location in Puerto Rico? I sure am thinking about all the folks there and hoping for the best for all of them.

He posted this morning on a Caribbean thread in the US & Caribbean Weather Forum. Said it would probably be his last post for a few days as power outages were already occurring in the San Juan area.

[ScottNAtlanta]

Man I did not expect this storm to be able to maintain this long much less keep improving. It's core has it's coldest clout tops yet! This thing is an ACE monster. Prayers to everyone who went through this storm and those that still have to.

I just saw online somewhere that this is the longest stretch of time an Atlantic storm has maintained a Cat 5 intensity

[tolakram]

Ok...today I'm thinking I need to go get plywood. Its looking more and more like we are going to have a landfall here. Is anyone else in the area doing the same? SC Gov. just declared a state of emergency here

As a side note...is there a thread topic for people to discuss preparation for this storm other than the discussion thread?

There is a prep forum with lots of good info.

viewforum.php?f=30

[storm_in_a_teacup]

Man I did not expect this storm to be able to maintain this long much less keep improving. It's core has it's coldest clout tops yet! This thing is an ACE monster. Prayers to everyone who went through this storm and those that still have to.

I just saw online somewhere that this is the longest stretch of time an Atlantic storm has maintained a Cat 5 intensity

I'd like to say I've maintained Category 5 intensity for two months, but my radius of maximum winds is only about half an inch so it's not much of an achievement.

(Help me)

[cypher2001]

Hey Folks - Looking for a little help. Have some family in Ft Lauderdale that I'm trying to convince to take a drive for a few days. Based on the model, Its likely a long drive to anywhere outside of the cone -- but where would be a reasonable place to hold up for a few days be? Anyone booked hotel rooms recently and where might there be availability?

[supercane4867]

Does anybody know what the highest Dvorak rated storm in the Atlantic was? Gilbert? Whatever the record is this has to be giving it a run for its money.

Yes, Gilbert was analyzed to be T8.0 by TAFB as shown in its report and it was the only Atlantic hurricane to ever received a T8.0

[decgirl66]

Hey Folks - Looking for a little help. Have some family in Ft Lauderdale that I'm trying to convince to take a drive for a few days. Based on the model, Its likely a long drive to anywhere outside of the cone -- but where would be a reasonable place to hold up for a few days be? Anyone booked hotel rooms recently and where might there be availability?

I have some relatives that found rooms in Lake County, which is closer to the West coast. ( and much further N than Ft Lauderdale!)

[SunnyThoughts]

Raw T# 7.3. Wow

[Hurrilurker]

Man I did not expect this storm to be able to maintain this long much less keep improving. It's core has it's coldest clout tops yet! This thing is an ACE monster. Prayers to everyone who went through this storm and those that still have to.

If it makes you feel any better, neither did the NHC.