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yoda

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Everything posted by yoda

  1. Doubt it works well for storms... but I like the 12z HRDPS presentation from 21z and on ETA: 15z HRRR has said line... but its 01z-02z time period
  2. Mesoscale Discussion 0423 NWS Storm Prediction Center Norman OK 1043 AM CDT Tue May 15 2018 Areas affected...Central and northern Pennsylvania into southern New York and southwest New England Concerning...Severe potential...Watch likely Valid 151543Z - 151815Z Probability of Watch Issuance...95 percent SUMMARY...Severe storms are likely to develop over the next several hours from central and northern Pennsylvania into southern New York, continuing into southern New England by late afternoon. Severe wind and hail are likely across all areas, with a few tornadoes possible mainly from northeast Pennsylvania into southern New England. As such, one or more severe and/or tornado watches will be needed today. DISCUSSION...Surface analysis shows a cold front across northwest PA into OH, with a pre-frontal trough across central NY into central PA. A progressive area of early-day thunderstorms has produced outflow across much of southern NY to near the northern PA border. Satellite imagery shows strong heating is occurring across the warm sector, with a plume of mid to upper 60s F dewpoints spreading north across PA and NJ, and likely into southern NY later today. In addition, the aforementioned outflow will continue to modify, while likely maintaining some degree of enhanced low-level wind shear this afternoon. Thunderstorms currently exist along the cold front from western PA into western NY, and should continue a gradual increase in intensity as the air mass destabilizes to the east. In addition to these storms, other storms are expected to form near the surface trough, and perhaps atop the old outflow boundary. Deep-layer shear will favor cellular activity away from the cold front, while a mixed storm mode including bows or embedded supercells are possible along the front. Strong heating and steep lapse rates aloft will favor large hail, with an increasing damaging wind by the time storms organize into a line. Any cellular activity will be capable of large hail, perhaps very large, along with a few tornadoes where low-level shear is maximized. ..Jewell/Grams.. 05/15/2018 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BOX...BTV...OKX...ALY...PHI...BGM...BUF...CTP... PBZ...
  3. The 1000 J/KG DCAPE line is into VA... almost looks wedge-like in its delineation lol
  4. 12z NAM NEST looks decent as well IMO for most of us
  5. 14z HRRR decent for most... even mappy gets in on some of the action... but its after 22z
  6. 13z HRRR is better... not sure about severe... but storms are around us
  7. Lol Wiz is chasing 5% tor and 30% hatched wind on 0600z SPC day 1 OTLK
  8. Thanks for your post... I agree with you. Nice to hear your thoughts
  9. @andyhb What are you thinking for tomorrow? Another fireworks show?
  10. Looks like storms will be coming from our NW or N tomorrow... which is a bit odd. Though I believe @high risk liked tomorrow?
  11. Tomorrow looks great... until you see the crappy shear Though 4500 to 5000 SBCAPE and 4000 MLCAPE with LIs near -10 are okay
  12. CWG reporting extensive wind damage in the western suburbs around Reston
  13. Wonder if the reported and confirmed funnel cloud by the NWS will end up confirmed as a weak tornado in Loudoun earlier
  14. NWS Employee reports golf ball sized hail 1 mile NE of Reston at 635pm
  15. https://twitter.com/iembot_lwx/status/996156139644575745?s=20 NWS Employee reported a funnel cloud in Ashburn at 619pm
  16. Got a bunch of pics before the rain pushed me inside
  17. Yes... but they had issued a tornado warning before that... usually LWX says something about that... like its weakened or something in an updated severe weather statement ETA: and just as I say that a new TW issued
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