ATL: Tropical Depression Dolly

[CrazyC83]

HPC takes over at 10 pm. Dolly is not dead yet.

[Ed Mahmoud]

Dolly is now in Mexico.

To bad she did not start there...60 Miles from the USA getting off easy..

I don't mean to be inflammatory but that could be really offensive.

Wrong as well. Landfall just South of Matamoros would have put maximum surge into the Rio Grande, and may have broken the levees, especially when combined with the heavy rain.

[brunota2003]

There was one in Mexico to 119 mph.

Unofficial, of course.

On the normally weaker left side of the storm no less...but the strongest winds on the right side would have been in no man's land...

From Mark's website yesterday:

Even areas farther south in Mexico, near Matamoros, received hurricane force winds. We know this because of people like Tim Millar. He was there in an instrumented SUV to measure wind and pressure- among other things. His top gust? 119 mph early this morning. It actually happened while he was on LIVE talking with us during an audio broadcast the we provided to visitors of the site. Ground data is very important and Tim's observations will now be a part of hurricane history. Good job!

Also, from the 11 am EDT advisory from yesterday:

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 25 MILES...35 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140
MILES...220 KM. PORT ISABEL AIRPORT JUST MEASURED 54 MPH...87 KM/HR
SUSTAINED WINDS WITH GUSTS TO 70 MPH...113 KM/HR. AN UNOFFICIAL
OBSERVER JUST EAST OF MATAMOROS MEXICO REPORTED SUSTAINED WINDS OF
65 MPH...105 KM/HR WITH GUSTS TO 119 MPH...192 KM/HR.

[srainhoutx]

Good view from VIS and Radar loops of Dolly as she spins down. Heavy flooding rains for our neighbors to the West as well. Certainly brings back memories of Beulah/1967...Darn, I'm getting old...

http://adds.aviationweather.noaa.gov/sa ... ig&itype=v is

http://radar.weather.gov/Conus/southpla ... e_loop.php

Just picked up a quick 1.75 inches in 15 minutes in NW Harris County.

[vbhoutex]

Good view from VIS and Radar loops of Dolly as she spins down. Heavy flooding rains for our neighbors to the West as well. Certainly brings back memories of Beulah/1967...Darn, I'm getting old...

http://adds.aviationweather.noaa.gov/sa ... ig&itype=v is

http://radar.weather.gov/Conus/southpla ... e_loop.php

Just picked up a quick 1.75 inches in 15 minutes in NW Harris County.

You must be out near Hwy 6 and 290 area. My son was out there and said it was pouring while here in Spring Branch it was only pizzling. But then the bottom fell out and we have had over an inch in the last 30-45 mins and are getting some minor street flooding in my area. Still pouring too!!! We need the rain badly but not all at once.

I haven't heard any amounts from the valley lately. Have their been any updates?

BTW, TXWX are your family ok?

[Ed Mahmoud]

Core rain event likely, with enahnced flooding near center of TD Dolly. Once the sun sets, and the outer convective bands being enhanced by daytime heating weaken, Dolly will concentrate heavy rain closer to the center.


Just reading something that suggests heavy nocturnal rainfall of inland systems may instead be associated with the d-max/cloud top cooling...

This exhibition of increased rainfall rates at night, accompanied by increasing cold cloud tops has historically been linked to so-called cloud-top cooling. Tropical systems are warm core. Indeed, the 500 mb temperature associated with Allison's landfall in southeast Texas was minus 5 degrees C. Diurnal cooling at night in the upper regions of the system (hence, cloud- topped) in such a deeply saturated system is thought to be enough to increase lift and enhance nocturnal rainfall rates

[HURAKAN]

Dolly after a little more than 24 hrs over land.

[cooter]

Off the subject...but what happened to Invest 97. Just got to a computer and noticed it was gone. Any information? Thanks

[fasterdisaster]

Off the subject...but what happened to Invest 97. Just got to a computer and noticed it was gone. Any information? Thanks

Still around but it's disorganized. You can find its weak circulation in Talking Tropics.

[fasterdisaster]

Best looking tropical depression I've ever seen.

[Cyclenall]

Why is the floater gone for Dolly?

I'm confused why some texts and readings state that Hurricane Dolly originated from a tropical wave when I remember it was from the ITCZ. Was it both?

The ITCZ is like a train track. Tropical waves are the trains. Dolly formed from a tropical wave.

No, because if you look at the ITCZ in the Central Pacific basin, sometimes tropical cyclones can form right from a blob that spins up and disconnects from the line. Ioke in 2006 did this, not from a tropical wave.

The area of convection that became Dolly was connected to the ITCZ at the start. I wonder if a tropical wave moved right into the ITCZ and got attached to it and then started to develop later.

[Derek Ortt]

Dolly came from a wave

[Cyclenall]

Dolly came from a wave

Why were people talking about it being connected to the ITCZ?

[RL3AO]

Dolly came from a wave

Why were people talking about it being connected to the ITCZ?

It was a wave connected to the ITCZ. It then disconnected from the ITCZ, lost all convergence and didn't develop for 5 days.

[cycloneye]

I remember the debates about the lack of convergence,got it,lacks it etc.

[Cyclenall]

Dolly came from a wave

Why were people talking about it being connected to the ITCZ?

It was a wave connected to the ITCZ. It then disconnected from the ITCZ, lost all convergence and didn't develop for 5 days.

That's what I thought. Finally a straight answer.

[Category 5]

Dolly is now in Mexico.

To bad she did not start there...60 Miles from the USA getting off easy..

That's real nice.

[DESTRUCTION5]

Dolly is now in Mexico.

To bad she did not start there...60 Miles from the USA getting off easy..

That's real nice.

I said this because there is a heck of alot less potential damage and population too boot..Not because i have something against Mexico....

[caribepr]

Have you watched where people in Mexico were being taken to safe places by BOAT? I have no doubt there was no malice in your post, but ignorance can be just as offensive.
I'm thankful to those who addressed this, as it reminds me all too much of how mainlanders look at the islands and South America (all of its parts) and the awareness that is HUGELY growing on S2K. Truly, thank you for recognizing the rest of the world's existence.

[HURAKAN]

In the United States you always know that in some way the government will help you and coming back from a disaster like a hurricane is easier than in any third world country. When you are in a country like Mexico and you lose everything you have, coming back is extremely difficult.