Wednesday, April 19, 2017

SUB-TROPICAL DEPRESSION ONE EXPECTED TO MERGE AND DISSIPATE ON THURSDAY

A STRONG EXTRA-TROPICAL LOW TRACKING EAST TOWARD SUB-TROPICAL DEPRESSION ONE WILL ABSORB THE DEPRESSION ON THURSDAY.  THE EXTRA-TROPICAL SYSTEM COULD STRENGTHEN SOME AS IT TRACKS OUT OVER THE NORTH ATLANTIC.  ONLY A THREAT TO SHIPPING.

RTW


UPDATED MIAMI AND VICINITY FORECAST



Tonight Apr 19, 2017
Partly cloudy with isolated showers: Lows around 73°F.  East wind 7 to 13 MPH, gusting to 21 MPH. Chance of rain 20 percent.

Thursday Apr 20
Partly cloudy with isolated showers during the day: Highs around 82°F.  East wind 9 to 16 MPH, gusting to 23 MPH. Chance of rain 20 percent.

Partly cloudy   Night:  Lows around 72°F.  East wind to 14 MPH, gusting to 21 MPH.

Friday Apr 21
Mostly sunny during the day:  Highs around 82°F.  East wind to 13 MPH.

Mostly clear during the night:  Lows around 73°F.  East wind 5 to 12 MPH.

Saturday Apr 22
Partly cloudy with isolated showers during the day:  Highs around 84°F.  East southeast wind 5 to 14 MPH.  Chance of rain 20 percent.

Partly cloudy with isolated showers during the night:  Lows around 75°F.  East southeast wind to 11 MPH.  Chance of rain 20 percent.

Sunday Apr 23
Partly cloudy with isolated showers during the day:  Highs around 84°F. Southeast wind 6 to 13 MPH. Chance of rain 30 percent.

Partly cloudy with isolated showers during the Night: Lows around 73°F.  South wind to 8 MPH.  Chance of rain 30 percent.

Monday Apr 24
Partly cloudy with isolated showers during the day:  Highs around 84°F.  West wind to 10 MPH. Chance of rain 30 percent.

Partly cloudy with isolated showers during the night:  Lows around 70°F.  West northwest wind 4 to 9 MPH, gusting to 14 MPH. Chance of rain 30 percent.

Tuesday Apr 25
Mostly sunny during the day:  Highs around 81°F.  West northwest wind to 8 MPH.

Mostly clear during the night:  Lows around 68°F.  East northeast wind to 8 MPH.






Local Radar

TOMORROW'S THUNDERSTORM OUTLOOK

16
Tomorrow's Severe Thunderstorm Outlook.


INVEST 91L GATHERS SOME ORGANIZATION TO GET A SUB-TROPICAL STATUS

THIS MORNING INVEST 91L STARTED RAPPING THUNDERSTORMS AROUND THE CENTER OF CIRCULATION AND WINDS INCREASING TO DEPRESSION STRENGTH.  THIS PROMPTED THE NATIONAL HURRICANE CENTER TO GIVE THE INVEST A SUB-TROPICAL DEPRESSION STATUS.

THIS SYSTEM WILL BE SHORT LIVED AS IT MERGES WITH AN EXTRA-TROPICAL LOW TO THE WEST NORTHWEST OF SUB-TROPICAL DEPRESSION ONE'S PRESENT POSITION.

HERE IS A LINK TO MY TROPICAL WEATHER WEBSITE!
http://ralphstropicalweather.myfreesites.net



Tuesday, April 18, 2017

UPDATED MIAMI AND VICINITY FORECAST



Tonight Apr 18, 2017
Partly Cloudy:  Lows around 72°F.  East wind to 14 MPH.

Wednesday Apr 19
Partly cloudy with isolated showers during the day:  Highs around 81°F.  East wind 10 to 18 MPH, gusting to 24 MPH.  Chance of rain 20 percent.

Partly cloudy with isolated showers during the night:  Lows around 73°F.  East wind 7 to 17 MPH, gusting to 22 MPH. Chance of rain 20 percent.

Thursday Apr 20
Partly cloudy with isolated showers during the day:  Highs around 81°F.  East wind 8 to 18 MPH, gusting to 24 MPH.  Chance of rain 20 percent.

Partly cloudy with isolated showers during the night:  Lows around 72°F.  East wind 10 to 15 MPH, gusting to 20 MPH.

Friday Apr 21
Mostly sunny during the day:  Highs around 82°F.  East wind to 13 MPH.

Mostly clear during the Night:  Lows around 73°F.  East wind to 13 MPH.

Saturday Apr 22
Mostly sunny during the day:  Highs around 82°F.  East southeast wind to 14 MPH.

Partly cloudy with isolated showers during the night:  Lows around 73°F.  East wind to 14 MPH.  Chance of rain 20 percent.

Sunday Apr 23
Partly cloudy with isolated showers during the day:  Highs around 82°F.  Southeast wind to 15 MPH.  Chance of rain 30 percent.

Partly cloudy with isolated showers during the night:  Lows around 73°F.  South southeast wind to 12 MPH.  Chance of rain 40 percent.

Monday Apr 24
Partly cloudy with isolated showers during the day:  Highs around 84°F.  West southwest wind 8 to 14 MPH.  Chance of rain 40 percent.

Partly cloudy with isolated showers during the night:   Lows around 64°F.  West wind 8 to 14 MPH.  Chance of rain 30 percent.






MORE THUNDERSTORMS NEAR CENTER OF STORM INVEST 91L

NATIONAL HURRICANE CENTER:

Special Tropical Weather Outlook
NWS National Hurricane Center Miami FL
130 PM EDT Tue Apr 18 2017

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

A non-tropical low pressure system is located over the central
Atlantic about midway between Bermuda and the Azores Islands. This
low is producing disorganized cloudiness and showers, and an area of
gusty winds to the west of the center. This system has the
opportunity to become a subtropical cyclone over the next 24 hours
before it becomes absorbed by a larger extratropical cyclone. The
next Special Tropical Weather Outlook will be issued by 2 PM EDT
Wednesday.  For additional information on this system, please
see High Seas Forecasts issued by the National Weather Service.
* Formation chance through 48 hours...low...30 percent
* Formation chance through 5 days...low...30 percent

High Seas Forecasts issued by the National Weather Service can be
found under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and on
the Web at http://www.opc.ncep.noaa.gov/shtml/NFDHSFAT1.shtml.

$$
Forecaster Avila
---------------------------------------------------------------------------------------------------
I have noticed more convection (thunderstorms) near the center of circulation.  This system could become a sub-tropical system before merging with an extra-tropical system.  Only a threat to shipping!

RTW  
http://ralphstropicalweather.myfreesites.net