Posts

John Homenuk

What to know about Hermine and how it may affect the Northeast

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Tropical Storm Hermine formed earlier today in the Central Gulf of Mexico, after several days of being tracked and obsessively monitored by meteorologists and weather hobbyists alike. Regardless, the storm has strengthened over the last 24 hours and is expected to continue to do so as it moves northeastward towards the Florida Peninsula. Thereafter, forecast models have taken a dramatic turn in their handling of the storm system.

Current forecast model guidance and ensemble data suggests that Hermine, after making landfall along the Florida Peninsula, will track northeastward along the Southeast Coast before re-emerging off the Mid Atlantic shoreline. As this occurs, the storm will begin to interact with an upper level system which is forecast to drop southward through the Ohio Valley and Mid Atlantic States. This interaction may pull Hermine westward back towards the Mid Atlantic and/or Northeast US coasts by late this weekend into Labor Day.

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Miguel Pierre

(Premium) Tropical Storm Hermine Increasingly Likely to Affect our Region

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We continue to carefully monitor developments with tropical storm Hermine currently over the Gulf of Mexico. It is forecast to make landfall near around the Florida Big Bend area, as a tropical storm. But it could intensity more — into a Category 1 Hurricane — before making landfall. Therefore, a hurricane watch has also been issued for this region. The main threat will still be heavy rainfall and perhaps some coastal flooding and storm surge along the coast, due to the new moon cycle.

For our region, we watch for at least the remnants of this system to affect our area. Model guidance has been indicating that a northern stream shortwave will break off the upper-level trough that will passing through the Northeast tonight and tomorrow. This will trail the that trough and create a new, powerful shortwave trough in the Ohio Valley — similar to what we sometimes see during our strongest snowstorms. Then this shortwave trough and energy will amplify the downstream pattern, and thus interact with the shortwave energy from Tropical Storm Hermine, as it moves up somewhere near the Georgia and Carolina coasts on Friday.

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