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Allsnow

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Posts posted by Allsnow

  1. 1 minute ago, winterwx21 said:

    That warned cell in Hunterdon is going to be close for our area. Definitely has a little bit of a southerly component to it. It might get down to northern Middlesex ... keeping my fingers crossed. 

    Yeah, idk if we get much more then that…

     

    hopefully it fills in but idk 

  2. Wow! 
     

    Areas affected...northern NJ into western Long Island/NYC Metro vicinity

    Concerning...Severe Thunderstorm Watch 489...

    Valid 301826Z - 302000Z

    The severe weather threat for Severe Thunderstorm Watch 489 continues.

    SUMMARY...An intense bowing segment will move across northern New Jersey into western Long Island and the New York City metro vicinity over the next 1-2 hours. Damaging wind gusts are expected with these storms.

    DISCUSSION...A cluster of storms has rapidly intensified and developed into a bowing segment near the northern NJ/PA state line this afternoon. This activity will spread east/southeast over the next 1-2 hours into the axis of strong instability oriented over the northern Mid-Atlantic region. These storms have already produced gusts to near 50 kt and areas of wind damage. This activity is likely to continue producing severe/damaging wind gusts as storms spread across northern NJ and the New York City metro vicinity.

    • Like 2
  3. 1 minute ago, winterwx21 said:

    Yeah we won't completely clear out, but at least we'll have breaks.

    Some cells starting to pop up further to the south in PA. We should have a decent shot at seeing something later today, but obviously it's far from a guarantee. 

    Parts of extreme snj got 8-10 inches of rain this morning. Crazy 

    • Like 1
  4. Areas affected...southern New England, southern New York State, eastern Pennsylvania, northern New Jersey

    Concerning...Heavy rainfall...Flash flooding possible

    Valid 301744Z - 302344Z

    Summary...Bands of scattered thunderstorm activity were moving quickly to the east, but also merging/training locally to produce spots of 1+ inch/hr rain rates at times. These rates could cause flash flood potential to increase through the early evening.

    Discussion...Storms have deepened and expanded in coverage within a strongly unstable airmass across the discussion area over the past hour. The storms are aligned along and just ahead of a surface cold front across central PA/southern New York and were embedded in deep westerly flow, promoting 30-40 kt storm motions. Of particular concern, however, is the alignment of convection across Connecticut and southern New York favoring training, which has boosted rain rates into the 1-1.5 inch/hr range, threatening local FFG thresholds.

    Models/observations are in general agreement that storms will continue to train/expand eastward while propagating southward/eastward toward more populated locales (including New York/northern New Jersey, Providence RI, and Boston). Not only are FFGs locally lower in some of these areas, but urban/hydrophobic surface may promote a local flash flood risk especially where rain rates exceed 1 inch/hr. Flash flooding is possible given the aforementioned scenario.
     

  5. 1 minute ago, forkyfork said:

    it's completely wrong to our north so it doesn't mean anything

    hrrr_ref_frzn_neus_1.png

    Good catch. It completely missed the storm in SNE a few days ago that caused widespread damage 

  6. 22 minutes ago, winterwx21 said:

    It does feel strange to have such a big severe weather threat on day that's completely overcast. Hopefully it won't hurt chances for our area. 

    Yeah, that normally means a bust. We shall see…

  7. 4 hours ago, winterwarlock said:

    About a 1/4 inch yesterday and overnight..meh

     

    What time today for the rains. Im headed down the shore for a few hours and want to leave before it hits

    Bad day for the beach 

  8. 1 minute ago, JonClaw said:
    URGENT - IMMEDIATE BROADCAST REQUESTED
       Severe Thunderstorm Watch Number 489
       NWS Storm Prediction Center Norman OK
       1110 AM EDT Sun Jun 30 2024
    
       The NWS Storm Prediction Center has issued a
    
       * Severe Thunderstorm Watch for portions of 
         Connecticut
         Northern Delaware
         Massachusetts
         New Jersey
         Southern New York
         Central and Eastern Pennsylvania
         Rhode Island
         Coastal Waters
    
       * Effective this Sunday morning and evening from 1110 AM until
         700 PM EDT.
    
       * Primary threats include...
         Widespread damaging winds likely with isolated significant gusts
           to 75 mph possible
         Isolated large hail events to 1.5 inches in diameter possible
    
       SUMMARY...A mix of thunderstorm clusters and supercells should pose
       a threat for numerous to widespread severe/damaging winds as they
       move eastward this afternoon and evening. Peak wind gusts should
       generally range around 60-70 mph, with isolated gusts perhaps
       reaching up to 75 mph. Occasional hail around 1-1.5 inches in
       diameter may also occur with any sustained supercell.
    
       The severe thunderstorm watch area is approximately along and 100
       statute miles east and west of a line from 35 miles north northwest
       of Worcester MA to 30 miles west southwest of Philadelphia PA. For a
       complete depiction of the watch see the associated watch outline
       update (WOUS64 KWNS WOU9).
    
       PRECAUTIONARY/PREPAREDNESS ACTIONS...
    
       REMEMBER...A Severe Thunderstorm Watch means conditions are
       favorable for severe thunderstorms in and close to the watch area.
       Persons in these areas should be on the lookout for threatening
       weather conditions and listen for later statements and possible
       warnings. Severe thunderstorms can and occasionally do produce
       tornadoes.
    
       &&
    
       AVIATION...A few severe thunderstorms with hail surface and aloft to
       1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
       few cumulonimbi with maximum tops to 500. Mean storm motion vector
       27035.
    
       ...Gleason

     

    IMG_3752.jpeg

    • Like 1
  9. Mesoscale Discussion 1487
    NWS Storm Prediction Center Norman OK
    0855 AM CDT Sun Jun 30 2024

    Areas affected...portions of the Mid-Atlantic and southern New England

    Concerning...Severe potential...Severe Thunderstorm Watch likely

    Valid 301355Z - 301600Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Thunderstorm coverage will gradually increase in coverage/intensity through midday. Swaths of damaging wind gusts are expected through afternoon. One or more severe thunderstorm watches will likely be needed in the next couple of hours for portions of the Mid-Atlantic into New England.

    DISCUSSION...A very moist airmass is already in place across the region this morning, with surface dewpoints in the low to mid 70s F noted in observations. Temperatures are already in the upper 70s to low 80s, and even modest heating through broken clouds will aid in further destabilization toward midday. 12z RAOBs from ALB and OKX also indicate a strongly sheared environment, with effective shear magnitudes greater than 40 kt present. Early convection is already noted near Binghamton NY along an outflow boundary. Additional convection is developing further west across central PA ahead of an east/southeast-advancing cold front.

    As convection gradually increases over the next few hours, bowing segments/clusters are expected given mostly unidirectional deep-layer flow. Large instability, high PW values, and steepening low-level lapse rates amid favorable shear will support swaths of damaging winds across the region through the afternoon into early evening. One or more watches will likely be needed for the region within the next couple of hours.

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