From my MESO storm chase partner Brian McNoldy...
3:05 p.m. - Gustav just now downgraded to a Category 1 hurricane.
Another
powerful Labor Day hurricane for the record books. A little sooner than
expected, Hurricane Gustav made landfall near Cocodrie LA at about 15Z
today, at an intensity of 95kts and 955mb. You can watch the landfall via
the New Orleans radar HERE.
A
buoy located roughly 60 miles south of Pascagoula MS reported 34'
significant wave heights** (individual waves could have been much
higher). The water there is about 900 feet deep, and the SST was 30.7C
yesterday before the storm got there, now it's
27.9C. HERE.
Other
notable automated observations come from Grand
Isle and
New
Canal:
It's
too early to know the extent of the damage in southern LA, as the storm is
still there. Levees in New Orleans have already been overtopped, but as of
this writing, are still intact. The next day or so will be the real test as
time and pressure wear on... fortunately, the majority of the city is
evacuated. It will now continue to track inland over LA and eastern TX,
likely spawning tornadoes and causing major flooding. Four tornadoes have
been reported so far in MS and FL, and flood warnings cover much of LA, MS,
FL panhandle, eastern TX, and southern AR. Without a doubt though, the name
Gustav will be retired after this season, with probably ~100 deaths
attributed to the storm, and tens of billions of dollars in damage across 4
countries.
TS Hanna is presently crawling (4kts) over the eastern
Bahamas, creating flooding problems there. Latest intensity is 50kts and
994mb. It will pick up forward speed in a couple days, and then likely
intensify to a hurricane as it heads for the southeast US coast on Friday.
Right now, the official forecast places landfall at the GA/SC border, but
keep in mind that track errors 4 days out can be significant. Recent
satellite imagery is impressive: a centralized shield of very clod cloud
tops (as cold as -85C), perhaps indicating that the jump to hurricane status
is nearing.
At 15Z, the disturbance that was near 16N 35W yesterday
was upgraded to TD9, and is now at about 18N 40W and tracking W at 14kts.
Intensity is 30kts and 1005mb, and gradual intensification is expected as it
heads west. This could certainly be TS Ike by this evening, and a hurricane
by mid-late-week. In the long term, this could be of great interest to
Florida.
And as if the list wasn't long enough already, there's a new
very potent easterly wave that has just exited Africa. It's located at
about 12N 20W, and has a 1007mb Low embedded within the wave. Assuming TD9
takes the name Ike, the next name on the list is Josephine.
Hanna was upgraded to a hurricane, the 4th of the season. Intensity is now
65kts and 985mb, and it's more or less stalled over the eastern
Bahamas. And for up-to-the-minute updates on Gustav's impact on LA and
MS, you can visit HERE.