Storm Early Warning System

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Storm A1 Mild Significant Severe Extreme Anticipated land effects Disturbance   Tropical Dep.    Tropical Storm   Category 1    Category 2   Category 3   Category 4    Category 5                    <40mph                40-73              74-95            96-110        111-128        129-156           157+

EXTRATROPICAL CYLCONE A1
ADVISORY #1

FORCE THIRTEEN HQ MANCHESTER UK

2200 UTC TUE JAN 17 2017


…EXTRATROPICAL CYCLONE DEVELOPS EYE-LIKE FEATURE…


SUMMARY OF 2200 UTC...INFORMATION

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LOCATION…NEAR 42.1N 38.3W

MAXIMUM SUSTAINED WINDS...70 MPH...115 KM/H

MINIMUM CENTRAL PRESSURE…980 MB


WATCHES AND WARNINGS

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A Rain Warning is in effect for the Occidental Islands of the Azores


FORECAST

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Satellite indications suggest that the system is deepening, and has near hurricane force winds, based on a partial ASCAT pass which depicted winds of at least 55 knots.  The storm is expected to curve northwards, and some models are predicting the possibility of the system obtaining some subtropical or even tropical characteristics in the next couple of days.

Next update at 03:00 UTC, January 18


FORECASTER FOY

A1