June 25, 2019

20 Sep Weather in Cayman & Tropical Report, 2 Dist


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20 Sep Thu 2018

Tropical Report


Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 AM EDT Thu Sep 20 2018

For the North Atlantic…Caribbean Sea and the Gulf of Mexico:

1. A westward-moving tropical wave is producing a small but
concentrated area of thunderstorms about 850 miles east of the
Windward Islands. Some additional development is possible today
before upper-level winds become increasingly unfavorable for
tropical cyclone formation starting tonight and continuing through
the weekend.
* Formation chance through 48 hours…low…20 percent.
* Formation chance through 5 days…low…20 percent.

2. A non-tropical low pressure system is forecast to develop by Friday
night over the central subtropical Atlantic Ocean between Bermuda
and the Azores. Conditions are expected to be conducive for the low
to acquire some subtropical or tropical characteristics, and a
subtropical or tropical cyclone could form over the weekend or early
next week while the low meanders over the central Atlantic Ocean.
* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 5 days…medium…40 percent.

Forecaster Berg


Tropical Weather Outlook
NWS National Hurricane Center Miami FL
1100 PM PDT Wed Sep 19 2018

For the eastern North Pacific…east of 140 degrees west longitude:

The National Hurricane Center is issuing advisories on Tropical
Depression Nineteen-E, located inland over the Mexican state of

1. An elongated area of low pressure located almost 1000 miles
southwest of the southern tip of the Baja California peninsula
continues to produce disorganized showers and thunderstorms. Any
development of this system during the next few days should be slow
to occur before upper-level winds become unfavorable for development
over the weekend. This disturbance is forecast to move slowly
west-northwestward at 5 to 10 mph during the next several days.
* Formation chance through 48 hours…low…10 percent.
* Formation chance through 5 days…low…20 percent.

2. An area of low pressure is expected to form in a few days well to
the south of the southern coast of Mexico. Some slow development is
possible early next week while the system moves nearly parallel to
the southwestern coast of Mexico.
* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 5 days…low…30 percent.

Public Advisories on Tropical Depression Nineteen-E are issued under
WMO header WTPZ34 KNHC and under AWIPS header MIATCPEP4.
Forecast/Advisories on Tropical Depression Nineteen-E are issued
under WMO header WTPZ24 KNHC and under AWIPS header MIATCMEP4.

Forecaster Berg


Global Tropics & Benefits Outlook

Weather in Cayman



Moderate easterly winds are expected for the next 24 hours in association with a ridge over the northwest Caribbean.



Humidity: 88%  (DOWN from yesterday)

UV: 12.7   EXTREME  (DOWN from yesterday)

Temperature: Today’s current temperature –   See weather forecast top right of website.  Yesterday: H 89.4°F  L 75.6°F

Wind direction TODAY: ENE 10-20 mph

Wind direction TONIGHT: ENE 10-15 mph

Barometer: 1014.20 mb Steady  Rain:   Last month: 1.83 in    Last 24 hrs 0.02  This month:  12.12 in  0 days since rain  11 rain days in September

2017 Season Total:  62.94 in      2018 : 36.13 in

Average Yearly Rainfall 56.20 in (Note: National Weather Service 2017 – measured at Owen Roberts Airport GT – was 59.32 in)

All readings are from SOUTH SOUND.

Average rainfall in September 8.2 in.  Average temperature in September: 77°F to 90°F

in September 84°F



81%  Waxing Gibbous





GRAND CAYMAN SEPTEMBER 2018 – Click to enlarge


Moon info and graphic:


Atlantic satellite image: http://www.intellicast.com/global/satellite/infrared.aspx?region=hiatlsat

The Global Infrared Satellite image shows clouds by their temperature. Red and blue areas indicate cold (high) cloud tops. Infrared (IR) radiation is electromagnetic radiation whose wavelength is longer than that of visible light, but shorter than that of terahertz radiation and microwaves. Weather satellites equipped with scanning radiometers produce thermal or infrared images which can then enable a trained analyst to determine cloud heights and types, to calculate land and surface water temperatures, and to locate ocean surface features.

Tropical storm data and graphics from National Hurricane Center at: https://www.nhc.noaa.gov/

Weathernerds: https://www.weathernerds.org/

Mikes Weather Page: http://www.spaghettimodels.com/

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