Tropical Storm Warnings Isaias Moving Northward
Strong Winds Coast Heavy Rains Inland
It is such a busy day ahead with so much going on it is going to be hard to stay ahead of the curve. Everything from Tropical Storm Warnings to Tornado Watches to Flash Flood Watches are up from Virginia to New England it will be important today to stay on top of the developing weather situation thanks to Tropcial Storm Isaias. It will be a rough 6 hours of the worst of it as Isaias moves northward.
8AM LOCATION…37.7N 76.8W
ABOUT 15 MI…20 KM SSE OF TAPPAHANNOCK VIRGINIA
MAXIMUM SUSTAINED WINDS…70 MPH…110 KM/H
PRESENT MOVEMENT…NNE OR 25 DEGREES AT 33 MPH…54 KM/H
MINIMUM CENTRAL PRESSURE…993 MB…29.33 INCHES
TROPICAL STORM ISAIAS
The track of Isaias will be the driver here as far as who gets heavy rain. The radar shows that all the heavy rain has shifted to the north and west of the storm track so those areas from Western New Jersey westward will see rainfall amounts of up to 6 inches in some places. East of the track and you will see less in the way of rain however you will see strong winds. The regional radar shows Isaias moving northward with heavy rains in Southern Pennsylvania down into Maryland and Virginia but note not much happening at the coast. Watch the tail that extends out into the Atlantic because from that we could see some thunderstorms that spawn severe weather and tornadoes.
LOCAL RADAR NEW YORK CITY
Let’s go to the issue of severe weather as we now have a tornado watch posted for New Jersey, NYC, the Lower Hudson Valley, Long Island and Connecticut and you can see on the local radar below severe weather with numerous severe thunderstorm and tornado warnings being issues so keep a sharp eye on the radar into this afternoon.
As far as winds are concerned the strongest winds will be east of the track of Isaias and we will see winds gusting to 50 to 60 mph easily and some gusts to 70 mph or more are not impossible. This all happens fast so look for winds to pick up rather quickly and they will also drop off rather quickly after about 6 hours of rough wind. Here are views of the forecast winds gusts at 11am and 2pm but bear in mind these winds could come in faster as well as exit faster.
As for the total rainfall to the east there isn’t going to be much unless you get hammered by a severe thunderstorm. Long Island and Southern New England rainfall amounts will be under an inch. West of NYC rainfall amounts will be several inches or more with flash flooding likely.
Once Isaias moves to our north late this afternoon weather conditions should improve rather quickly with winds dropping off fast. Much better weather returns on Wednesday with sunshine, highs in the 80s and slightly lower humidity.
MANY THANKS TO TROPICAL TIDBITS FOR THE USE OF MAPS
Please note that with regards to any severe weather, tropical storms, or hurricanes, should a storm be threatening, please consult your local National Weather Service office or your local government officials about what action you should be taking to protect life and property.