yoda

Very interesting notes from SPC today about May 2020 severe weather wise

I've been watching some of what has been going on in MN/WI... and seems like HRRR was a big whiff

SPC morning Day 2 disco

SPC morning Day 2 has moved SLGT risk south some... it is now just north of a Harrisonburg, VA to EZF line.... 2/15/15

So looks like we probably have 2 chances then... Wednesday afternoon into night and then again Friday afternoon

Afternoon AFD from LWX discussing severe for Wed to Fri time period:

Has this mainly been on the NAM? Or has the GFS and EURO been having the same? And those are some large matches by hail size... probably helped by the eastward moving EML with between 7.5 and 8.0 C/KM mid level Lapse rates

Well I hope people aren't expecting 2012 to be walking through the door... cause that's just silly

I consider low to mid 90s a hot air mass with DPs near 70

Will be interesting to see what the Day 3 SPC OTLK looks like

00z NAM showing ML Lapse Rates around 7.0 C/KM for Wednesday afternoon into the evening

https://www.spc.noaa.gov/exper/archive/event.php?date=20000809 All the watches, MCDs, and text products issued during the day... plus storm reports as well

Should be in the SPC archives ETA: @George BM beat me to it

https://www.spc.noaa.gov/products/md/md0758.html Mesoscale Discussion 0758 NWS Storm Prediction Center Norman OK 1127 AM CDT Fri May 29 2020 Areas affected...Northern Mid Atlantic Coast region Concerning...Severe potential...Severe Thunderstorm Watch likely Valid 291627Z - 291730Z Probability of Watch Issuance...80 percent SUMMARY...Thunderstorms may develop across the Poconos and Catskills vicinity as early as the next hour or or so, with a more general increase and intensification of thunderstorm during the 3-5 PM EDT time frame. With strongest storms expected to pose at least a risk for severe wind and hail, one or more severe weather watches seems probable. DISCUSSION...Insolation within a seasonably moist boundary layer (surface dew points around/above 70F) is contributing to moderately large CAPE on the order of 1000-2000+ J/kg, within deepening surface troughing to the lee of the Appalachians. Mid-level flow remains broadly anticyclonic, however deepening convective development is underway aided by orography, particularly across the Poconos into Catskills vicinity. As a short wave trough accelerates northeast of the middle Ohio Valley/central Appalachians region, mid-level flow appears likely to trend increasingly cyclonic across northern Virginia through eastern New York state. This should contribute to an environment increasingly conducive to thunderstorm initiation and intensification. A coinciding strengthening of southwesterly mid-level flow (30-50 kt around 500 mb), will provide sufficient shear for organizing lines and clusters of storms, with isolated discrete supercells also possible. At least some of this activity will pose a risk for large hail, potentially damaging wind gusts, and perhaps a tornado or two. ..Kerr/Grams.. 05/29/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OKX...ALY...PHI...BGM...AKQ...CTP...LWX..

Severe tstorm watch coming soon for C VA into C PA

From the SPC 4-8 day OTLK disco:

2/15/15 on the new Day 1 OTLK

This looks fun

00z HRRR has some morning activity between 09z and 11z coming up from the south into DC metro... nothing severe... but might make for quite a soupy airmass in the morning as the sun appears... waiting for the rest of the run to see what happens in the afternoon around here ETA: Nothing really through 23z so far... kinda surprised tbh

This afternoons LWX severe threat disco for tomorrow... mentions cap for i95 corridor till evening... also mentions supercells possible

For Friday, day 2 morning SPC OTLK

MRGL risk for Day 1... 2% TOR and 5% wind... for i95 corridor and west TOR risk is from N VA into C PA on day 1 OTLK No real disco for our area though besides few short sentences lol SLGT for day 2 for most of LWX CWA... 2% TOR and 15% wind... potential for greater tornado risk stated in disco on day 2 btw... all depends on low level flow and surface wind direction

For those that want to look at the 5/31/2008 event - https://www.spc.noaa.gov/exper/archive/event.php?date=20080531 ETA -- 120 hours would be the weekend, yes? Saturday or Sunday? And could you link me to the CIPS severe again? I lost my link

If you live in Binghamton... article says not in Western New York. Perhaps later maybe... nice to see snow in Buffalo today though