An Unsettled Weekend


This GOES RGB Image is edited to show the location of the trough of low pressure impacting Bermuda as a red line to the west of the island.
This GOES RGB Image is edited to show the location of the trough of low pressure impacting Bermuda as a red line to the west of the island.

While mainly decent weather held for much of the week, only a few isolated showers due to the heating of the island during the day, high pressure responsible for that weather has weakened and retreated northwards as an easterly wave originating in the central Atlantic blows through. Surface convergence and an unstable atmosphere associated with this wave of low pressure are allowing for showers and even thunderstorms this time in Bermuda.

A batch of showers crossed the island this morning with some thunder and gusty winds. However, most showers fizzled during late morning and into early afternoon. Further showers and thunderstorms are possible this evening and tonight as surface heating peaks allowing for more showers and thunderstorms to pop up and head eastwards towards the island. They may last into tomorrow morning. Strong gusty winds today, sometimes sustained over 20mph should begin to ease as the axis of the easterly wave continues to move off to the west of Bermuda. Active weather should be widely scattered enough to not be a complete wash out and ruin all weekend plans. At the same time, it should bring some amount of much needed rain to the island. An extended dry spell since mid/late June has left the island with a year-to-date precipitation deficit of about 4″. Although this ‘drought’  isn’t looking as bad as in recent years, keeping close to average is always a good thing as it doesn’t take much to cause serious problems.

Currently, a small craft warning and thunderstorm advisory are in effect for Bermuda to account for winds that turn strong at times and thunderstorms that could potentially develop and/or move into the area later on. See HERE for the latest advisories, watches, and warnings in effect for Bermuda as issued by the Bermuda Weather Service.

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