Hurricane Helene - Cat. 3
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- Evil Jeremy
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Evil Jeremy wrote:fact789 wrote:prepare some crow it its not helene.
what does that "Crow" statement mean, anyways?
When someone makes a statement or prediction that turns out to be really wrong and is forced to eat their words, it's called "eating crow".
It's a phrase that is used TO DEATH here.
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- Evil Jeremy
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- ConvergenceZone
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it's official...it's helene
Statement as of 11:00 PM AST on September 13, 2006
...Tropical depression intensifies into Tropical Storm Helene...
At 1100 PM AST...0300z...the center of Tropical Storm Helene was
located near latitude 13.3 north...longitude 32.7 west or about 565
miles...910 km...west of the southernmost Cape Verde Islands.
Statement as of 11:00 PM AST on September 13, 2006
...Tropical depression intensifies into Tropical Storm Helene...
At 1100 PM AST...0300z...the center of Tropical Storm Helene was
located near latitude 13.3 north...longitude 32.7 west or about 565
miles...910 km...west of the southernmost Cape Verde Islands.
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- Evil Jeremy
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Statement as of 11:00 PM AST on September 13, 2006
infrared satellite imagery this evening indicates continued gradual
development with a distinct curved band on the northwestern
semi-Circle. Based upon unanimous Dvorak T-numbers of 2.5 and
earlier AMSU intensity estimates...the intensity is analyzed at 35
kt and is given the name Helene.
The tropical storm appears to have sped up with an initial motion of
285/19...though this is somewhat uncertain given the spread in
positions. Helene should continue west-northwestward for the next
day under the influence of a deep-layer ridge. Between 36 and 72
hours...a mid to upper trough induces a weakness in the ridge and
this may act to steer the system toward the northwest. After this
trough by-passes Helene...a west-northwestward track should resume
at days 4 and 5. All reliable guidance shows this stair-step
scenario...with NOGAPS being a modest outlier to the southwest of
the pack. The forecast track is near the model consensus and is to
the right of the previous forecast.
While there is a large Saharan air layer to the north and west of
Helene...total precipitable water analyses from CIRA suggest that
this very dry air is not reaching Helene's inner core. The
system's projected track should take it over warm water...through
abundant moisture and into light vertical shear for the next three
days. SHIPS and the FSU super-ensemble thus bring Helene up to
about 100 kt in three days. The GFDL...on the other hand...is
substantially weaker...likely because it depicts more shear being
imparted on Helene due to the aforementioned mid to upper trough.
At days 4 and 5...all guidance suggests the shear will pick up and
limit further intensification. The intensity forecast is close
to...but just below...both SHIPS and the FSU super-ensemble.
Forecast positions and Max winds
initial 14/0300z 13.3n 32.7w 35 kt
12hr VT 14/1200z 13.7n 35.0w 45 kt
24hr VT 15/0000z 14.7n 37.4w 55 kt
36hr VT 15/1200z 15.9n 39.5w 65 kt
48hr VT 16/0000z 17.4n 41.0w 75 kt
72hr VT 17/0000z 20.0n 43.5w 90 kt
96hr VT 18/0000z 21.5n 45.5w 95 kt
120hr VT 19/0000z 22.5n 49.0w 85 kt
$$
forecaster Avila/landsea
infrared satellite imagery this evening indicates continued gradual
development with a distinct curved band on the northwestern
semi-Circle. Based upon unanimous Dvorak T-numbers of 2.5 and
earlier AMSU intensity estimates...the intensity is analyzed at 35
kt and is given the name Helene.
The tropical storm appears to have sped up with an initial motion of
285/19...though this is somewhat uncertain given the spread in
positions. Helene should continue west-northwestward for the next
day under the influence of a deep-layer ridge. Between 36 and 72
hours...a mid to upper trough induces a weakness in the ridge and
this may act to steer the system toward the northwest. After this
trough by-passes Helene...a west-northwestward track should resume
at days 4 and 5. All reliable guidance shows this stair-step
scenario...with NOGAPS being a modest outlier to the southwest of
the pack. The forecast track is near the model consensus and is to
the right of the previous forecast.
While there is a large Saharan air layer to the north and west of
Helene...total precipitable water analyses from CIRA suggest that
this very dry air is not reaching Helene's inner core. The
system's projected track should take it over warm water...through
abundant moisture and into light vertical shear for the next three
days. SHIPS and the FSU super-ensemble thus bring Helene up to
about 100 kt in three days. The GFDL...on the other hand...is
substantially weaker...likely because it depicts more shear being
imparted on Helene due to the aforementioned mid to upper trough.
At days 4 and 5...all guidance suggests the shear will pick up and
limit further intensification. The intensity forecast is close
to...but just below...both SHIPS and the FSU super-ensemble.
Forecast positions and Max winds
initial 14/0300z 13.3n 32.7w 35 kt
12hr VT 14/1200z 13.7n 35.0w 45 kt
24hr VT 15/0000z 14.7n 37.4w 55 kt
36hr VT 15/1200z 15.9n 39.5w 65 kt
48hr VT 16/0000z 17.4n 41.0w 75 kt
72hr VT 17/0000z 20.0n 43.5w 90 kt
96hr VT 18/0000z 21.5n 45.5w 95 kt
120hr VT 19/0000z 22.5n 49.0w 85 kt
$$
forecaster Avila/landsea
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Andrew92 wrote:Maybe (and hopefully) I'm going up the wrong tree when I say this, but the 5-day forecast path looks a lot like Isabel in her early life. Then again, most storms that follow an almost-northwest path like Isabel did go out to sea. Hoping Helene is a FISH.
-Andrew92
That slight westward turn at the end did raise my interest a bit.
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