Invest 96L: Organizing in the Gulf
Hi everybody, Dr. Rob Carver filling in for Jeff while he's on vacation.
Invest 96L appears to be in the process of developing into a tropical cyclone. The strength and extent of it's thunderstorms is much improved from yesterday (I used CIMMS tropical storm page for my analysis). It's under an upper-level anticyclone which promotes development because it efficiently removes "exhaust" from the thunderstorms. Shear is relatively low (~10 knots), and SST's are adequate for supporting a tropical cyclone (~28 deg. C). In the most recent Tropical Weather Outlook, NHC mentioned that research flights found that upper-level conditions were promising for storm development, so they assess the chances of 96L of becoming a tropical cyclone at 80%. My take is that 96L has an 80% chance of becoming TD #2, and about a 40% chance of being named Bonnie. My reasoning is that 96L has about 24 hours to intensify before interactions with land start interfering with intensification processes. Also, model intensity forecasts are not very supportive of 96L attaining tropical storm force winds. The model track forecast aids have 96L's center of circulation making landfall somewhere between Brownsville and Corpus Christi.
Impacts
The 12Z operational GFS, HWRF, NOGAPS, and 18Z NAM tell a similar story about the surface winds. Near tropical-storm force winds affect the Texas coast from Corpus Christi to Matagorda Bay. A broad area of 30+ mph winds also affects the Deepwater Horizon oil spill recovery efforts. The 12Z Canadian global model downplays the wind strengths, and the 12Z parallel GFS fails to develop any significant surface wind (> 20 mph). That said, I believe that 96L's greatest impact will be in the form of rain.
The Rio Grande from Del Rio to Laredo is either at major flood stage or is forecast to reach major flood stage in the next 24 hours. This is due to Alex and the moisture he brought to the high terrain of northern Mexico. Nearly all of the forecast models I've looked at forecast 2-3 inches of rain over the Rio Grande Valley in the next 5 days. That will only encourage more flooding. The main forecast problem is how much rain will fall along the Gulf Coast. The parallel GFS and HWRF suggest that 4.5 to 6.5 inches of rain will fall in the Galveston/Houston area in the next 5 days. In my opinion, people living in this area should be prepared for flooding.

Fig. 1. 120 hr accumulated precipitation (mm) for 12Z parallel GFS. Operational GFS

Fig. 2. 120 hr accumulated precipitation (mm) for 12Z HWRF.

Fig. 3. 120 hr accumulated precipitation (mm) for 12Z Canadian global model. NOGAPS
Emergency Preparations
People living along the Gulf coast from south of the Rio Grande to the Texas/Louisiana border should review their emergency preparations (hurricane preparations also make for good flood preparations). Jeff has put together a guide to hurricane preparedness with plenty of links for more information.
Next Update
If 96L becomes TD2 or Bonnie, I'll have an update tonight. Shaun Tanner may post something in the morning if that's when the naming occurs. Otherwise, I'll post a tropical update tomorrow afternoon.
Reader Comments
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It doesn't
yeah, or then again who knows...
Quoting HarleyStormDude52:
ok... somebody "splain" to me.. How does a TD turn into a TS after it hits land.. Like I said I am just a novice at this soooo...
Also it might depend on the land features themselves. Hurricane Wilma strengthened as she crossed the Florida Everglades (October 24th, 2005) and was a stronger storm wind-wise (maybe pressure as well) as she raked across Broward and Palm Beach counties, than when she made landfall near Naples, on the west coast.
In her case, it was probably the lack of land friction (no hills or buildings in the everglades) and perhaps even the heat content of the watery swamp.
Of course I am no expert, so take that as opinion :)
BaltimoreBirds
Brownsville, Texas (Airport)
Updated: 13 min 55 sec ago
Heavy Rain
79 °F
Heavy Rain Mist
Humidity: 89%
Dew Point: 75 °F
Wind: 22 mph from the South
Wind Gust: 30 mph
Pressure: 29.77 in (Steady)
Visibility: 0.8 miles
UV: 3 out of 16
Pollen: 3.80 out of 12
Pollen Forecast new!
Clouds:
Mostly Cloudy 600 ft
Mostly Cloudy 1200 ft
Overcast 2200 ft
(Above Ground Level)
Elevation: 20 ft
Interestingly enough I just read that Wilma "weakened" as she crossed the state, but in western Broward county (edge of Everglades) she was certainly stronger than a 110-mph storm before she hit the coast.
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
311 AM EDT THU JUL 8 2010
NCZ029-044>047-079>081-090>095-098-103-104-090715-
MARTIN-PITT-WASHINGTON-TYRRELL-MAINLAND DARE-GREENE-BEAUFORT-
MAINLAND HYDE-DUPLIN-LENOIR-JONES-CRAVEN-PAMLICO-CARTERET-ONSLOW-
OUTER BANKS DARE-OUTER BANKS HYDE-
311 AM EDT THU JUL 8 2010
THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH CAROLINA.
.DAY ONE...TODAY AND TONIGHT.
WIDELY SCATTERED THUNDERSTORMS WILL DEVELOP OVER THE REGION LATER
THIS MORNING AND AFTERNOON. SOME OF THESE STORMS WILL HAVE THE
POTENTIAL TO PRODUCE GUSTY WINDS.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED AGAIN FRIDAY WITH THE
THREAT FOR GUSTY WINDS. MORE NUMEROUS THUNDERSTORMS ARE EXPECTED
SATURDAY AS A COLD FRONT APPROACHES. SOME OF THESE STORMS COULD
PRODUCE STRONG WINDS AND LOCALLY VERY HEAVY RAIN.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
$$
"The cost of the response to date amounts to approximately $US3.12 billion, including the cost of the spill response, containment, relief well drilling, grants to the Gulf states, claims paid, and federal costs," BP said.
The latest estimate is far higher than the $US2.65 billion given by the energy firm one week ago.
BP's share price has collapsed more than 50 per cent since the Deepwater Horizon oil rig it leased sank on April 22, two days after a blast that killed 11 workers.
After intense pressure from President Barack Obama over the worst ever US environmental disaster, BP agreed last month to suspend its shareholder dividend and create a $US20 billion fund for costs arising from the spill.
BP is also selling non-core assets to raise $US10 billion, while international ratings agencies have downgraded the company's credit worthiness.
But yesterday, spokesman Robert Wine discredited a Sunday Times report that the company was turning to rival oil groups and sovereign wealth funds from Asia and the oil-rich Middle East to fend off a possible hostile takeover bid.
"We have no current plans to issue new equity," he told AFP.
Nearly a week after Hurricane Alex swept through the region, bad weather continued to hamper the clean-up, keeping smaller skimming vessels tied up in harbors in the affected Gulf states of Mississippi, Alabama and Florida.
Skimming and other operations have resumed in calmer seas off the coast of Louisiana, however.
Although there was no direct hit from Alex, this year's first major Atlantic storm provided a reminder of the urgent need to clean up a disaster surpassed only by Iraqi troops' deliberate release of crude in Kuwait during the 1991 Gulf War.
A major boon to the clean-up effort could come in the form of "A Whale," a giant ship converted by its Taiwanese owners into what they call the world's largest oil skimming vessel.
Owners TMT Shipping Offshore say the ship can suck up to 500,000 barrels (21 million gallons) of oily water a day through its "jaws," a series of vents on the side of the ship.
By comparison, more than 500 smaller vessels in 10 weeks have only managed to collect some 671,428 barrels of oil-water mix between them.
Tests on the "A Whale," which traveled more than half-way around the world from Taiwan to the Gulf, were ongoing and approval for it to start skimming operations could come as early as today.
The US Navy's MZ-3A Airship was expected to reach the Gulf Coast Tuesday to help detect oil, direct skimming vessels and search for wildlife threatened by the thick brown-orange mess.
And officials said disposal units known as Heavy Oil Recovery Devices (HORDs) are "greatly improving" clean-up operations.
Up to 1,000 units were expected to be up and running in the coming weeks, with a focus on sucking up thick-heavy oil that has thwarted traditional skimming methods.
The fractured pipe that connected the BP-leased platform to the well a mile (1600 metres) down on the seafloor has now spewed somewhere between two and four million barrels of oil into the Gulf.
The firm's current containment systems can only capture or flare some 25,000 barrels of oil a day, a number set to double when a third vessel is expected to be in place on Thursday.
It will likely be mid-August at the earliest before the ruptured well is permanently capped by injecting mud and cement with the aid of relief wells.
I expect Tropical Depression #2 to be deactivated late tonight.
It's a drop in the bucket to BP, they have money beyond belief.
I totally forgot about his blog usually read it daily amongst a few others.
She's not JFV.
Now time to sit back and watch the birds from Baltimore bicker.
Agreed.
This is someone that needs to broaden their hobbies or try dating, if at all possible, as they clearly have time on their hands and have no idea what to do with it. And heshe seems to have no sense of right and wrong. I expect that, without some intervention or growing up a tad, that future, more serious infractions will be committed by this person.
One second thought, maybe dating isn't a good idea. We would all be much better off with no offspring, thanks.
yeah i no but I thought i should post it.
Don't know the author of the quote, but it sounds right...
Actually, a hurricane will typically begin to decrease in intensity prior to its official landfall (characterized by the center of its eye crossing the coast). As I mentioned previously, an intensifying system like both Andrew and Alex are prime examples of hurricanes that tightened up their eyes due to the frictional effects of land. However, that did not and doesn't translate into a continued intensification of the storm in either its central pressure nor its MSW. Numerous studies have shown that a hurricanes MSW typically decreases by 5-10 % at the land-sea interface.
On the other hand, it is not too uncommon for TC's to begin to reintensify while over land as they approach very warm SST's as they are about to exit a particular coastline. This is what occurred during 1997 with TD Danny as it neared the NC Outer Banks. The same was true for TS Bonnie from 1998-when it intensified back to minimal hurricane intensity while moving over the Outer Banks as well.
The only known example of a TC that I am aware of that actually intensified over land right after it had come ashore was TS Fay in 2008. In that case, the atmospheric environment improved just after it crossed the SW Fl. coastline near Everglades City and was able to take advantage of the marshy wetlands of the Everglades.
WOOOO HOOO!!!!!!!!!!!!!!!!!!!!!!!!!!!!
It's interesting to see what one culture will key to as opposed to another...I'm not surprised that the Chinese are interested in American professional sports though
Unfortunately they seem likely to get at least a little more from TD2 (if they aren't already). Unfortunately, this moisture isn't going some place that can use it: Link
On Wednesday, the lake set a new record low, dropping close to 44 feet. It's the last thing that Lake Meredith officials wanted to do, but starting this week or next, they're going to add new wells out at their Roberts County well field.
Lake Meredith General Manager, Kent Satterwhite can't believe what he's seeing. In only a decade Meredith has dropped close to 20 feet setting a new low. It's something he thought would never happen.
Lake Meredith is in the Texas Panhandle, formed from the Canadian River. ISTR reading that the water pumps don't work below 45 feet and they have now had to start adding special pumps since the water is below that level.
We are at the new blog. ;)
Alas, the slap needs to be more vigorous... :-)
How you doin, Flood?
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