Alert archive / New York / Mesoscale Discussions in 2021
Mesoscale Discussion 748
The Storm Prediction Center issued this mesoscale discussion at May 26, 2021, 2:07 PM EDT for 12 counties in New York. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2021, 2:07 PM EDT (18:07 UTC)
- Expired
- May 26, 2021, 3:30 PM EDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 205
Counties Albany County, NY, Chenango County, NY, Cortland County, NY, Fulton County, NY, Greene County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Otsego County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY
The radar
The Albany radar (KENX), 70 km from the middle of the area, began a volume at 18:10 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 6.1 hours before the alert went out and 84 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 6 J/kg
- Mixed-layer CIN
- -291 J/kg
- Mixed-layer LCL
- 1196 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
303
ACUS11 KWNS 261808
SWOMCD
SPC MCD 261807
NYZ000-261930-
Mesoscale Discussion 0748
NWS Storm Prediction Center Norman OK
0107 PM CDT Wed May 26 2021
Areas affected...portions of central and eastern New York
Concerning...Severe Thunderstorm Watch 205...
Valid 261807Z - 261930Z
The severe weather threat for Severe Thunderstorm Watch 205
continues.
SUMMARY...Sporadic damaging wind gusts are expected to continue over
the next couple of hours across parts of central/eastern New York.
DISCUSSION...A line of storms from Oneida to Cortland counties in
central New York has been producing sporadic damaging winds over the
last hour or so. Recent data from the New York Mesonet has shown
maximum measured gusts around 45-55 mph with these storms. Given a
similar downstream airmass and a relative maximum in low level lapse
rates (around 8-8.5 C/km), this line of convection is expected to
maintain intensity for the next 1-2 hours. As a result, a corridor
of damaging wind is possible as the line tracks eastward toward the
Albany vicinity through 19-20z.
..Leitman.. 05/26/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ALY...BGM...
LAT...LON 43237569 43317518 43257426 43157383 42937358 42567353
42317394 42237462 42357562 42597623 43057590 43237569SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 12:16 PM EDT | Mesoscale Discussion | SPC | Albany, Allegany, Broome, Cattaraugus, Cayuga, Chautauqua and 32 more | 119 min |
| May 26, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | Albany, Broome, Chemung, Chenango, Columbia, Cortland and 23 more | 7 hr |
| May 26, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | Bronx, Kings, New York, Orange, Putnam, Queens and 3 more | 7 hr |
| May 26, 4:41 PM EDT | Mesoscale Discussion | SPC | Albany, Bronx, Columbia, Dutchess, Greene, Kings and 12 more | 64 min |
| May 26, 6:34 PM EDT | Mesoscale Discussion | SPC | Bronx, Kings, New York, Richmond | 116 min |
Nearby
Mesoscale Discussions in New York, 2021Every mesoscale discussion in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.