ATL: INVEST 90L

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#21 Postby HURAKAN » Thu Mar 10, 2011 4:08 pm

I don't think 17ºC is marginal, that's cold.
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#22 Postby CrazyC83 » Thu Mar 10, 2011 4:21 pm

It's warm-core and non-frontal according to the phase analysis though. Based on that, it should be considered a subtropical or tropical cyclone.
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#23 Postby HURAKAN » Thu Mar 10, 2011 4:27 pm

CrazyC83 wrote:It's warm-core and non-frontal according to the phase analysis though. Based on that, it should be considered a subtropical or tropical cyclone.


"Please note that these products are experimental and not official forecasts. For official forecasts in the U.S., please refer to the National Weather Service and National Hurricane Center."

Link: http://moe.met.fsu.edu/cyclonephase/
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#24 Postby HURAKAN » Thu Mar 10, 2011 4:30 pm

Image

Latest
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#25 Postby HURAKAN » Thu Mar 10, 2011 5:10 pm

Image

Latest loop
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#26 Postby HURAKAN » Thu Mar 10, 2011 5:34 pm

Image

globe view of the 90s
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Re: ATL: INVEST 90L

#27 Postby Florida1118 » Thu Mar 10, 2011 5:55 pm

I wish they would issue a TWO to let us know their thinking. They haven't posted anything on Facebook either.
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Re: ATL: INVEST 90L

#28 Postby cycloneye » Thu Mar 10, 2011 6:46 pm

7:05 PM EST TWD

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

THE ATLANTIC OCEAN...
THE AFOREMENTIONED DEEP LAYER TROUGH ACROSS THE ERN CONUS IS
SUPPORTING A COLD FRONT WHICH HAS NOW MADE ITS WAY JUST OFF THE
COAST OF THE CAROLINAS CROSSING NRN FLORIDA NEAR CAPE CANAVERAL.
A PRE-FRONTAL SURFACE TROUGH IS AHEAD OF THE FRONT ALONG 29N77W
ACROSS THE NW BAHAMAS TO WRN CUBA. SCATTERED SHOWERS/POSSIBLE
THUNDERSTORMS...SOME VERY STRONG...ARE WITHIN 200 NM AHEAD OF
THE FRONT. THE REMAINDER OF THE W ATLC IS EXPERIENCING FAIR
CONDITIONS DUE TO DRY AIR ALOFT AROUND AN UPPER LEVEL RIDGE
BETWEEN 60W-73W. ACROSS THE CENTRAL ATLC...A CUTOFF UPPER LEVEL
LOW IS NEAR 28N50W SUPPORTING A 1009 MB SURFACE LOW NEAR
31N54W. A DISSIPATING STATIONARY FRONT EXTENDS FROM THE LOW
CENTER ALONG 29N46W 24N40W 21N30W. A SURFACE TROUGH IS W OF THE
FRONTAL BOUNDARY ALONG 29N49W 26N48W 21N50W. ISOLATED SHOWERS
ARE ALONG THE TROUGH AND ERN PORTIONS OF THE FRONTAL BOUNDARY.
SCATTERED SHOWERS ARE CLOSER AND E OF THE LOW CENTER FROM
28N-32N BETWEEN 43W-53W. GALE FORCE WINDS ARE NOTED E OF THE
FRONT TO 44W...N OF 29N. FARTHER E...ANOTHER CUTOFF UPPER LEVEL
LOW IS SPINNING NEAR 35N18W SUPPORTING A 1008 MB SURFACE LOW
NEAR 34N17W. SCATTERED SHOWERS ARE WITHIN 120 NM OF THE LOW
CENTER. A RECENT WINDSAT SCATTEROMETER PASS INDICATES WINDS UP
TO 30 KT ARE NW OF THE CENTER. A WEAK SURFACE TROUGH ASSOCIATED
WITH THIS SYSTEM EXTENDS INTO THE DISCUSSION AREA ACROSS THE
CANARY ISLANDS WITH ISOLATED SHOWERS ALONG IT.
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#29 Postby KWT » Thu Mar 10, 2011 6:51 pm

People need to remember that whilst 17C is cold in terms of SSTs...its MARCH and the upper temps are very cold still at this time of year.

Remember people its all about the thermal difference between surface and the various levels of the atmosphere, as these systems in the NE Atlantic have proven over and over again!
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#30 Postby HURAKAN » Thu Mar 10, 2011 6:59 pm

KWT wrote:People need to remember that whilst 17C is cold in terms of SSTs...its MARCH and the upper temps are very cold still at this time of year.

Remember people its all about the thermal difference between surface and the various levels of the atmosphere, as these systems in the NE Atlantic have proven over and over again!


exactly, when you buy a car, you don't just look the exterior, you also check under the hood, and this system under the hood is screaming non-tropical.
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#31 Postby HURAKAN » Thu Mar 10, 2011 7:09 pm

Image

Excellent close-up
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#32 Postby Hurricane Jed » Thu Mar 10, 2011 7:29 pm

When they say Invest what do they mean by that?
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#33 Postby HURAKAN » Thu Mar 10, 2011 7:35 pm

Hurricane Jed wrote:When they say Invest what do they mean by that?


Invest:
A weather system for which a tropical cyclone forecast center (NHC, CPHC, or JTWC) is interested in collecting specialized data sets (e.g., microwave imagery) and/or running model guidance. Once a system has been designated as an invest, data collection and processing is initiated on a number of government and academic web sites, including the Naval Research Laboratory (NRL) and the University of Wisconsin Cooperative Institute for Meteorological Satellite Studies (UW-CIMSS). The designation of a system as an invest does not correspond to any particular likelihood of development of the system into a tropical cyclone; operational products such as the Tropical Weather Outlook or the JTWC/TCFA should be consulted for this purpose.


Link: http://www.nhc.noaa.gov/aboutgloss.shtml#i
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#34 Postby plasticup » Thu Mar 10, 2011 7:37 pm


Yeah, in actual size... :cheesy:

3,712px × 3,712px
lol
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#35 Postby HURAKAN » Thu Mar 10, 2011 7:44 pm

Image

Image

Other loops
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Re: Re:

#36 Postby Hurricane Jed » Thu Mar 10, 2011 8:09 pm

HURAKAN wrote:
Hurricane Jed wrote:When they say Invest what do they mean by that?


Invest:
A weather system for which a tropical cyclone forecast center (NHC, CPHC, or JTWC) is interested in collecting specialized data sets (e.g., microwave imagery) and/or running model guidance. Once a system has been designated as an invest, data collection and processing is initiated on a number of government and academic web sites, including the Naval Research Laboratory (NRL) and the University of Wisconsin Cooperative Institute for Meteorological Satellite Studies (UW-CIMSS). The designation of a system as an invest does not correspond to any particular likelihood of development of the system into a tropical cyclone; operational products such as the Tropical Weather Outlook or the JTWC/TCFA should be consulted for this purpose.


Link: http://www.nhc.noaa.gov/aboutgloss.shtml#i


Thank you.
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#37 Postby Hurricane Jed » Thu Mar 10, 2011 8:10 pm

Even though this probably won't do anything it at least gives us something to oooh and ahhh over until hurricane season officially starts. At least that's how I look at it.
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#38 Postby RL3AO » Thu Mar 10, 2011 8:44 pm

90L in early March. Nice.

Gonna take a lot for NHC to name something in this area in March.
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Re:

#39 Postby CrazyC83 » Thu Mar 10, 2011 9:34 pm

RL3AO wrote:90L in early March. Nice.

Gonna take a lot for NHC to name something in this area in March.


It would be the first in 103 years if it indeed got named.
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Re: ATL: INVEST 90L

#40 Postby DanieleItalyRm » Thu Mar 10, 2011 9:47 pm

For me evident warm core cyclone, convection not possible in the cold core cyclone center.
Last edited by DanieleItalyRm on Thu Mar 10, 2011 10:04 pm, edited 1 time in total.
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