Tag Archives: nowcast

NYC Nowcast – Strong to Severe Thunderstorms Approaching

Nowcast, NYC, Severe Weather, Thunderstorms, Tornadoes, , , , , , , , , , , ,

Severe thunderstorms are approaching the area from our west. Several distinct bowing segments of severe thunderstorms have been making their way steadily towards our area from Central Pennsylvania since earlier this afternoon.

These storms have a history of producing damaging wind gusts and even a few tornadoes. Sundown over some of the areas under the current Severe Thunderstorm Watch areas in our region may weaken these storms, however, overall atmospheric conditions are quite favorable to the forward propagation of this line.
Screen Shot 2014-07-08 at 8.09.44 PMScreen Shot 2014-07-08 at 8.11.29 PM

Screen Shot 2014-07-08 at 8.19.11 PM

NYC Nowcast – Jun 13, 2014

Nowcast, NYC, Rain, Severe Weather, Thunderstorms, , , , , , , , ,

You’ve felt the air warm up and become more humid as the warm front that brought our first round of rain passed through earlier today. Now, we’re getting set for a second round of heavy showers and thunderstorms associated with a pre-frontal trough that’s slowly progressing east towards the area from Eastern Pennsylvania.

Screen Shot 2014-06-13 at 4.28.48 PM

Ahead of this line of showers and thunderstorms, the air has destabilized readily with the ample sunshine earlier this afternoon. CAPE (Convective Available Potential Energy – a measure of how much fuel there is for thunderstorms to feed off of) is between 1000-1500 J/Kg over Northeastern New Jersey and NYC. This should allow for this line of storms to hold up and perhaps strengthen before hitting NYC. In fact, a couple sever thunderstorm warnings have already been posted for cells over Northeastern New Jersey.

Screen Shot 2014-06-13 at 4.29.13 PM

NYC Nowcast – May 10 @ 2:40PM EST

Nowcast, NYC, Rain, Severe Weather, Thunderstorms, Weather Update, Weekend, , , , , , , , ,

A batch of strong showers with some rumbles of thunder is approaching the NYC area. For the remainder of the afternoon and evening, strong to possibly marginally severe thunderstorms may pass through ahead of an advancing cold front. Damaging wind gusts and small hail are the primary threats.

Screen Shot 2014-05-10 at 2.37.04 PM

Otherwise, expect broken clouds to cloudy skies and nice warm afternoon in the upper 70s to low 80s across the area. A line of thunderstorms is likely to fire up again later this afternoon into the evening hours as the cold front actually approaches.

Screen Shot 2014-05-10 at 2.35.22 PM

Atmospheric instability is continuing to increase as we are in the warm sector ahead of the advancing cold front. Low level lapse rates and shear profiles are marginally conducive to the growth of some strong to severe thunderstorms.

NYC Nowcast – Apr 8, 2014 @

Cool Images, Nowcast, NYC, Rain, Weather Update, , , , , , ,

Quick update here: skies will gradually begin to clear as clouds associated with the rain storm last night move offshore. As you can see from the satellite image below, sunny skies are already entering portions of Northern NJ. Depending on the time we get under clear conditions, we could very well see high temps hit 70 except in Long Island and coastal CT, where an onshore southwest wind will keep things cooler.

Also of interest, check out the wave clouds out over Central PA! Just as objects in the path of a water can cause eddies and waves to form behind them, you can get the same effect with air flowing over mountain ranges. You can’t surf these (maybe with a glider?)
Untitled