TROPICAL WEATHER OUTLOOK EVENING EDITION JUNE 10, 2018 0927 PM EDT

National Hurricane Center

...TROPICAL WAVES...

An Atlantic Ocean tropical wave is along 18W/19W from 11N
southward. The Hovmoller Diagram clearly indicates the westward 
propagation of the wave, and model diagnostics guidance also 
suggests the presence of this system. This wave shows up well
as a low amplitude moisture surge on the TPW product.
Precipitation: broken to overcast multilayered convective debris
clouds, from earlier and already-dissipated precipitation, cover
the area from 03N to 10N between 16W and 26W. it is possible that 
isolated moderate rainshowers may remain in the area of
cloudiness.

An Atlantic Ocean tropical wave is along 32W from 12N southward 
moving westward 15 to 20 knots. This wave shows up well as a low 
amplitude moisture surge on the TPW product. Precipitation: 
isolated moderate rainshowers are in the ITCZ from 04N to 08N 
between 29W and 36W. 

An Atlantic Ocean tropical wave is along 44W/45W based on the TPW
animation. The wave coincides with a good surge of moistened air.
Precipitation: isolated moderate rainshowers are from 02N to 10N
between 37W and 47W. 

A Caribbean Sea tropical wave is along 68W/69W, starting to move 
across Hispaniola, moving westward 15 knots. Precipitation:
isolated moderate rainshowers are from 16N to 22N between 63W and
71W. 

A tropical wave is along 88W/89W, moving across the Yucatan 
Peninsula and northern Central America. The wave is interacting 
with an upper level trough, with continued development of
rainshowers in parts of the western Caribbean Sea, northern 
Central America, and the Yucatan Peninsula. 

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I continue monitoring the Northwest Caribbean for tropical cyclone 

formation during the this week as the GFS continues suggesting low 

pressure could possibly develop, and eventually move into the Gulf of 

Mexico.  

An upper level trough has dropped into the northwest Caribbean adding 
some instability for the formation of showers and storms over the southern 
Caribbean and a portion of the northwest Caribbean as it interacts with a 
tropical wave near the Yucatan.  This instability if it persist could be the 
start of an area of disturbed weather and low pressure that the GFS has 
been forecasting for 2 weeks now.  I will continue to monitor this area for
development during the coming week...RTW

ralphstropicalweather.com