Central Atlantic / Eastern Atlantic

[hial2]

Check out the activity...Maybe a harbinger of a busy season??

http://www.meteo.psu.edu/rtwx/ewall/SAT ... im8ir.html

[NDG]

They both called my attention last night before going to bed, this morning they are both still there.
The one near 9N/35W even appears to have a nice mid level circulation though in a mod shear environment, but impressive for this time of the year.



Just wanted to add, that it has survived this long for this time of the year besides only 10 knot shear but because of probably low SAL in the eastern Atlantic, thanks to prescence of strong mid latitude low pressure area near the Azores for the last few days which have weakened the winds which would usually carry the SAL westward across the eastern & central Atlantic.

[KWT]

Yep they look decent for nthe time of year, interestingly that one in the middle has kept going for a little while now, I'd have thought at this time of year they would have poofed into nothingness that far out in the Atlantic?

[Cyclenall]

Are those tropical waves or just pieces of convection? They look excellent.

[MiamiensisWx]

They are definitely tropical (easterly) African waves. The convection is associated with each wave axis.

[cycloneye]

Ramsdis has the off Africa wave on its floaters.

[cycloneye]

From the 8:05 PM EDT TPC discussion

FINALLY...A NARROW MID- TO UPPER-LEVEL RIDGE LIES S OF 12N OVER
THE TROPICAL ATLANTIC WITH A RIDGE AXIS GENERALLY ALONG 8N.
DEEP EASTERLIES ARE PRESENT S OF THE AXIS...WITH REAL-TIME NCEP
RE-ANALYSIS DATA INDICATING EASTERLY WIND ANOMALIES OF UP TO 20
KT. OTHERWISE...SPORADIC BUT ENHANCED CONVECTION CONTINUES FROM
THE GULF OF GUINEA TO EITHER SIDE OF THE EQUATOR AS FAR W AS
30W. SATELLITE IMAGERY REVEALS A WELL-DEFINED MID-LEVEL CYCLONIC
CIRCULATION EMBEDDED WITHIN THE DYING CONVECTION CENTERED CLOSE
TO 5N21W...WITH ANOTHER ONE CLOSE TO 9N35W. THOUGH ENHANCED...
THE CONVECTION IS SUBSTANTIALLY LESS THAN WHAT WAS OCCURRING
LATE LAST WEEK INTO THIS PAST WEEKEND...WHEN AN ATMOSPHERIC
DISTURBANCE KNOWN AS KELVIN WAVE WAS MOVING THROUGH THE REGION.


$$
KIMBERLAIN

http://www.storm2k.org/weather/hw3.php? ... hwvmetric=

Here is what they are saying about this.

[Squarethecircle]

I think that, although this is a marker in being one of the first noticeable waves, nothing at all will come of it.

Interesting enough for its position in time (as a wave), but not its chances regarding development.

[RL3AO]

The wave that died down in the Central Atlantic is the furthest north wave I've seen this year.

[canegrl04]

Wow If this is a sign of things to come,2008 will get off to an early CV season-like July o August

[MiamiensisWx]

Wow If this is a sign of things to come,2008 will get off to an early CV season-like July o August

Although I personally believe we may see an active Cape Verde season, please calm down. Most CV activity occurs in late August through mid-October. Only 2005 featured abundant MDR July development.

[Gustywind]

Time will tell , way too early to say that this is a or indics for a busy season or not ...in my humble opinion, whereas i appreciate to see this on the sat pic .

[Cyclone1]

Interesting little blob off the coast right now.

[cycloneye]

Below is the 8:05 PM EDT Discussion from TPC about the possible first wave.

AN ELONGATED MID- TO UPPER-LEVEL RIDGE EXTENDS FROM
W AFRICA TO JUST E OF THE LESSER ANTILLES...WITH AN AXIS RUNNING
FROM 20N06W TO 12N53W. ALTHOUGH CONVECTION HAS DECREASED OVER
THE TROPICAL ATLANTIC THE LAST FEW DAYS...THERE ARE TWO AREAS OF
INTEREST WHICH HAVE EMERGED OVER THE LAST 24 HOURS. THE FIRST
IS A CONVECTIVE CLUSTER N OF THE ITCZ...WITH WHAT APPEARS TO BE
A MID-LEVEL CYCLONIC CIRCULATION CENTERED NEAR 5N18W MOVING W AT
15 TO 20 KT. THIS FEATURE COULD BE CONSIDERED ONE OF THE
SEASONS FIRST AFRICAN EASTERLY WAVES. THE SECOND FEATURE IS
ALONG ELONGATED SURFACE TROUGH OF NORTHEASTERLIES CONVERGING
WITH EASTERLIES BETWEEN 8N AND 10N BETWEEN 45W AND 50W. EARLIER
VISIBLE SATELLITE IMAGERY REVEALED A TIGHTLY-COILED LOW- TO
PERHAPS MID-LEVEL CIRCULATION IN THE ASSOCIATED CONVECTION NEAR
9N46W....THOUGH THE CONVECTION SINCE THAT TIME HAS COLLAPSED.


$$
KIMBERLAIN

http://www.storm2k.org/weather/hw3.php? ... hwvmetric=

[MiamiensisWx]

It's not the first wave. It's "one" of the first waves. There were two previous waves that left the coast this week.

[cycloneye]

Here is a good cloud mass (A Wave?) just off West Africa,but it will go poof as it moves more west.

[RL3AO]

The waves are starting to get further north.

[gatorcane]

Pretty impressive area of convection for this time of year, here is another shot of it. Lots of deep convection with it:

[KWT]

I dare say the higher then normal SST's in the area are helping to make the waves stronger then usual for the time of year, though they probably will fall apart still once they reach a certain distance west.

[cycloneye]

2:05 PM EDT Discussion:

THE ITCZ...
THE ITCZ AXIS IS CENTERED ALONG 2N10W 2N20W EQUATOR AT 34W THEN
1N43W INTO NE BRAZIL. CLUSTERS OF MODERATE/ISOLATED STRONG
CONVECTION COVER THE AREA FROM 3N TO 9N EAST OF 20W TO THE
AFRICAN COAST. A SFC TROUGH WAS ANALYZED IN THIS AREA ALONG
15W/16W ON THE 12Z SFC MAP. THERE SEEMS TO BE ENOUGH EVIDENCE TO
SUGGEST THAT THIS COULD BE A TROPICAL WAVE. SATELLITE IMAGERY
SHOWS A WELL DEFINED INVERTED V-PATTERN. THE HOVMOLLER DIAGRAM
ALSO INDICATES THE WWD PROPAGATION OF THIS SYSTEM DURING LAST
TWO DAYS...AND THE BAMAKO SOUNDING SHOWED THE PASSAGE OF THIS
TROUGH/WAVE BETWEEN APRIL 30 AND MAY 1ST. BASED ON THIS DATA AND
THE TIME OF THE YEAR....A TROPICAL WAVE WILL BE INTRODUCED ON THE
18Z MAP.

http://www.storm2k.org/weather/hw3.php? ... hwvmetric=