ATL: GONZALO - Post-Tropical - Discussion

[CrazyC83]

Gonzalo could be the storm of 2014 in the Atlantic, at least so far...

[ozonepete]

Looks like St. Martin weather station (TNCM) went down. No new reports since 2300 UTC (7PM EDT). Looks like that island took a beating.

Yes we did! it's been really bad!

Really sorry to hear that. Be careful going outside until the winds die down and remember a lot of things like signs and trees are weakened so they can fall down really easily even in a light wind. Stay safe!

[blazess556]

0.5° Base velocity scan from TJUA at 10:09 p.m. indicated 98.1 kt winds.

[ozonepete]

0.5 Base reflectivity scan from TJUA at 10:09 p.m. indicated at 98.1 kts winds.

Base reflectivity doesn't show winds. You mean velocity radar such as storm relative velocity? And where did it show that?

[ozonepete]

The eye is starting to become visible:

[ozonepete]

You can see it on the IR now too.

[ozonepete]

0.5° Base velocity scan from TJUA at 10:09 p.m. indicated 98.1 kt winds.

Ok.

[TheAustinMan]

Eye is now fully in view of the long-range radar in San Juan, Puerto Rico, and given the motion of Gonzalo, will likely be viewable from here for the remainder of the night.

[Hammy]

Winds up to 85 mph and forecast to 120 mph on latest advisory.

Where do you get the level ii imagery?

[supercane4867]

0226z TJUA 0.5° Base reflectivity



0227z TJUA 0.5° Base velocity

[blazess556]

0.5° Base velocity scan from TJUA at 10:09 p.m. indicated 98.1 kt winds.

Ok.

i was trying to post an image. Its from GRLevel3 in the northwest eyewall.

[cycloneye]

BULLETIN
HURRICANE GONZALO ADVISORY NUMBER 7
NWS NATIONAL HURRICANE CENTER MIAMI FL AL082014
1100 PM AST MON OCT 13 2014

...GONZALO CONTINUES TO STRENGTHEN...
...EXPECTED TO PASS NORTHEAST OF THE VIRGIN ISLANDS OVERNIGHT...


SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...18.7N 63.4W
ABOUT 40 MI...65 KM NNW OF ANGUILLA
ABOUT 105 MI...170 KM E OF ST. THOMAS
MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H
PRESENT MOVEMENT...NW OR 315 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES

[supercane4867]

These intense velocities are well-elevated. Radar was scanning at 22500+ft AGL

[blazess556]

These intense velocities are well-elevated. Radar was scanning at 22500+ft AGL

yep. btw, how do you change the color tables? my scale only goes to 70 kts.

[msbee]

Looks like St. Martin weather station (TNCM) went down. No new reports since 2300 UTC (7PM EDT). Looks like that island took a beating.

Yes we did! it's been really bad!

Really sorry to hear that. Be careful going outside until the winds die down and remember a lot of things like signs and trees are weakened so they can fall down really easily even in a light wind. Stay safe!

Thanks.

[supercane4867]

These intense velocities are well-elevated. Radar was scanning at 22500+ft AGL

yep. btw, how do you change the color tables? my scale only goes to 70 kts.

You can do that by editing the PAL files under the GR3 folder and select the edited version in Color Table Settings

This is the one I'm using

units: KTS
step: 10
RF: 128 0 208
ND: 0 0 0
color: 160 255 255 255
color: 120 255 255 0
color: 70 255 100 0
color: 40 255 0 0
color: 10.5 112 0 0
color: 0 144 128 144
color: -1 112 128 112
color: -10.5 16 96 16
color: -40 0 255 0
color: -49.5 160 255 208
solidcolor: -50.5 160 255 208
solidcolor: -60 0 255 224
color: -70 0 224 255
color: -90.5 0 0 160
color: -160 0 0 0

[tropicwatch]

He is rockin and rollin.

[tropicwatch]

A little off topic but eventually it will effect Gonzalo. I don't know if I can recall a frontal system being so straight up and down (south to north).

[ozonepete]

A little off topic but eventually it will effect Gonzalo. I don't know if I can recall a frontal system being so straight up and down (south to north).

Not off topic at all. That is a long-wave trough that will kick Gonzalo northeastward and then eastward at the end of the week. Actually these are fairly common across the U.S. in the cold season from Fall thru Spring. When an upper trough (around 500 mb or halfway up to the stratosphere) pushes all the way down into the southern U.S. it helps form a surface cold front that goes all the way into the Gulf of Mexico. They are frequently the saviours for the east coast in the fall as they help steer hurricanes away. What's unfortunate this time around is that this trough/cold front will come too late to push Gonzalo eastward before this hurricane gets to Bermuda. It will come too late to push Gonzalo eastward away from the island.

[TropicalAnalystwx13]

Outflow is already exceptional in all quadrants except the southern one, and it's only going to expand as the upper-air pattern improves north of the Caribbean. Gonzalo has a real shot at becoming the first Category 4 hurricane in the Atlantic since Hurricane Ophelia in 2011, if you ask me.