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Monday showers/thunder threat


free_man

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Looks like moderate CAPE around 1500 J/kg or so, nice difluence at 250mb, decent veering winds throughout the column, solid low level jet. 500mb temps more than -8 or so definitely a mitigating factor. Later runs showing cooler temps though luckily. Both NAM and GFS showing decent QPF across the region. Looks like perhaps a squall line moving almost north to south hitting SNE early evening.

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...NERN STATES TO THE MIDWEST...

LARGE REGION OF POTENTIAL SVR WEATHER WILL UNFOLD ON MONDAY. A

SYNOPTIC MID-LEVEL WAVE WILL BRUSH ACROSS THE NERN STATES MONDAY

AFTN WITH MODEST HEIGHT FALLS/ASCENT. WSW FLOW AHEAD OF THE

ASSOCIATED COLD FRONT WILL ADVECT BOTH STEEP MID LVL LAPSE RATES AND

INCREASING PWATS INTO THE LOWER GREAT LAKES AND NERN STATES.

CONVECTION SHOULD BE ONGOING OVER QUE/SERN ONT AND PSBLY NRN NEW

ENGLAND EARLY IN THE DAY. AMID INCREASING WNW FLOW ALOFT AND

INCREASING MONDAY AFTN INSTABILITY...BANDS OF STORMS WILL

SUBSEQUENTLY INCREASE ALONG THE COLD FRONT AND LEE TROUGH FROM

CNTRL/SRN NEW ENGLAND SWWD INTO PARTS OF NY. WRN PARTS OF THIS

ACTIVITY MAY GRAZE PORTIONS OF PA AND NJ BY EVENING. HIGH

WINDS/LARGE HAIL WILL BE POSSIBLE WITH BOWS AND MULTICELL CLUSTERS.

THE ACTIVITY SHOULD WEAKEN S OF THE MASON-DIXON LINE DURING THE

EVENING HOURS.

Don't blame me for jinxing it this time! :guitar:

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Monday does look somewhat interesting. Shear isn't super impressive, but pretty good CAPES and lapse rates look decent.

Potentially some nice upper level jet support there too depending on the evolution of the 250hpa flow. Looks promising...which is about all you can ask for at 3 days out

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Looks like this upper level support might stick around through next week with multiple chances for severe weather. Looks like a solid chance of storms possibly Weds through Fri, then after a bit of ridging, another dynamic set up early next week. For Monday I'm liking how the nose of that 250mb jet is aimed right at New England. NAM definitely backed off on helicity a bit from previous runs but still modest veering and speed shear for the middle of summer. GFS and NAM both showing moderate instability between 1000-2000j/kg, GFS a little better with this with cooler 500mb temps. Some of our best events have a mix of moderate instability and moderate shear, and of course we have a forcing of a surface front to kick things off. Just hoping 500mb temps stay around -10C or lower.

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This is looking pretty damn impressive, almost June 1st impressive but not quite the tornadic threat...at least not right now but that is certainly a possibility.

Staying up for the 3z SPC SREF.

It looks really good so far, esp now that we're 1.5 days out. Not nearly as good as June1, but every event is unique, so it's comparing apples and oranges.

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It looks really good so far, esp now that we're 1.5 days out. Not nearly as good as June1, but every event is unique, so it's comparing apples and oranges.

Unique indeed...and in all honesty I'm not a fan of comparing events...at all. Every single event and setup is different...sure you might have a lot of similarities but all it takes is one small, tiny difference to make a setup very unique.

We'll see what happens...right now my current thinking is we see two lines of intense storms with damaging winds and large hail...possibly some supercells out ahead of the first line...BUT these supercells that may develop may actually start to form the first line.

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I just hope no tornados hit when I'm mowing the lawn at my place below ALB tomorrow afternoon. ;)

59 with the birds chirping outside now....

Unique indeed...and in all honesty I'm not a fan of comparing events...at all. Every single event and setup is different...sure you might have a lot of similarities but all it takes is one small, tiny difference to make a setup very unique.

We'll see what happens...right now my current thinking is we see two lines of intense storms with damaging winds and large hail...possibly some supercells out ahead of the first line...BUT these supercells that may develop may actually start to form the first line.

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HAVE TO WATCH FOR UPSTREAM MCS DEVELOPMENT TONIGHT WHICH COULD

THROW WRENCH INTO ALL OF THIS. RIGHT NOW MODELS SEEM TO AGREE THAT

ANY COMPLEX WILL REMAIN WELL TO OUR W AS IT RIDES AROUND PERIPHERY

OF STRONG MID LEVEL RIDGE...BUT DEBRIS CLOUDS OR LEFTOVER SHOWERS

COULD LIMIT HEATING MON.

This may be a problem..I see NWS mentioned cloud debris. Watch a large decaying MCS will roll in Monday, right around 8-10am. :snowman:

Actually I'm not convinced it will really matter so much since lapse rates are okay later on, wind field reasonably good, plus a decent cold front/wind shift to lift. If one of those were off, different story. MUCape should recover. Even with the atmosphere wrangled some because of debris, should still be a somewhat interesting day.

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I think SNE is gonna benefit for its latitude, because I think there might be some crappy mid level clouds over NNE. Looks like some stuff goes through NNE late night tonight which would probably mean there will be left over convective stuff up that way. This may also waft down into SNE, but at least we should have some solar heating. Also even if clouds muck up the heating a bit, we have continuous height falls, so it shouldn't be too capped. Shear looks pretty good as well across CT and up into western mass.

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