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Coastal Storm Discussion...April 22-23, 2012...


ag3

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As we approach, models continue to advertise a fairly substantial cutoff low affecting the area this weekend.

Interraction of the 2 jet branches is key to how much rain we receive. Last night's euro went back to the phased solution and as a result 2"-3"+ of widespread rain was shown.

The rest of the globals are also sticking with the phased idea. The 0z Ukie phases the 2 branches and then has a significant noreaster off our coast.

Timing and placement still to be determined. Right now the chance of 1"+ of rain over the weekend is definitely moderate. Hopefully, the models hold on to this idea as we approach.

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Last night's euro was a drought buster for sure. Had 3" of rain from the coastal and then the ULL sits to our west giving the area rain showers for 3 more days.

That's the best solution for our area as it will be a long duration event and kill the fire and drought conditions.

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And even 3" won't cause much flooding especially spread out over 3 days

Last night's euro was a drought buster for sure. Had 3" of rain from the coastal and then the ULL sits to our west giving the area rain showers for 3 more days.

That's the best solution for our area as it will be a long duration event and kill the fire and drought conditions.

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I don't think it will end the drought, as we are in a fairly large deficit since the beginning of the year. However the rain will definitely dampen down fire conditions. Hopefully a bunch of that rain also falls over the NYC watershed areas upstate.

As we approach, models continue to advertise a fairly substantial cutoff low affecting the area this weekend.

Interraction of the 2 jet branches is key to how much rain we receive. Last night's euro went back to the phased solution and as a result 2"-3"+ of widespread rain was shown.

The rest of the globals are also sticking with the phased idea. The 0z Ukie phases the 2 branches and then has a significant noreaster off our coast.

Timing and placement still to be determined. Right now the chance of 1"+ of rain over the weekend is definitely moderate. Hopefully, the models hold on to this idea as we approach.

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Euro ensembles are west of the operational. Low is off the Delmarva and then right on top of NYC.

Also, its much wetter. Close to 3" for NYC. Pretty impressive for a smoothed mean.

Rain starts Saturday night (with fropa) and then the coastal rains are Sunday morning through Monday morning.

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I don't think it will end the drought, as we are in a fairly large deficit since the beginning of the year. However the rain will definitely dampen down fire conditions. Hopefully a bunch of that rain also falls over the NYC watershed areas upstate.

Even if it doesn't necessarily "end the drought", it depends where we go from there. If we enter a stormier pattern with even normal precipitation after that storm, the drought will be over. Slight negative precipitation departures do not indicate long term drought. If we go back into driness, then the drought will continue, but probably not as severe.

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The control run of the Euro that just came out is nearly identical to the operational run. A bomb developing off the NJ coast, heading toward Boston as a 988mb, then retrograding to NY State with precipitation here the whole time and 850's on Monday night below -5, even into NYC. Unreal. It clearly indicates that someone will get at least 6 inches of snow. In fact, it has the 850's below freezing from Monday morning through the entire storm after the initial front comes through on Monday morning early. Unreal. Incredible.

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The control run of the Euro that just came out is nearly identical to the operational run. A bomb developing off the NJ coast, heading toward Boston as a 988mb, then retrograding to NY State with precipitation here the whole time and 850's on Monday night below -5, even into NYC. Unreal. It clearly indicates that someone will get at least 6 inches of snow. In fact, it has the 850's below freezing from Monday morning through the entire storm after the initial front comes through on Monday morning early. Unreal. Incredible.

Crazy. Safe to assume the surface is in the single digits in that setup.

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The operational had us in the mid 30's at the surface with the 850 temps at -5. It looks like the control run is very similar. Any idea how to fix my weather sticker below?

The control run has temperatures at the surface throught the NYC area in the 50s and 60s while the 850 mb temperatures are below 0 and precipitation is still falling from this storm. That is not snow.

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Which is why it's an operational run - can definitely happen this time a year but look at the trends of the season man - don't get burned again......

The control run of the Euro that just came out is nearly identical to the operational run. A bomb developing off the NJ coast, heading toward Boston as a 988mb, then retrograding to NY State with precipitation here the whole time and 850's on Monday night below -5, even into NYC. Unreal. It clearly indicates that someone will get at least 6 inches of snow. In fact, it has the 850's below freezing from Monday morning through the entire storm after the initial front comes through on Monday morning early. Unreal. Incredible.

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Is there anything in this set up that can even support having snow near NYC, even if it's just light snow as opposed to a 12z ECM-like solution? I would find this hard to believe any year in late April, but especially so in this year when there were barely any amplified storms near the coast. It also doesn't help that models have occasionally exaggerated cold and snow this season in the medium range, including the ECM.

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