Alert archive / New York / Mesoscale Discussions in 2011
Mesoscale Discussion 982
The Storm Prediction Center issued this mesoscale discussion at May 26, 2011, 2:57 PM EDT for 26 counties in New York; 13 counties in Vermont. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2011, 2:57 PM EDT (18:57 UTC)
- Expired
- May 26, 2011, 4:00 PM EDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 39 counties
Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Clinton County, NY, Cortland County, NY, Delaware County, NY, Essex County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Tioga County, NY, Tompkins County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windsor County, VT
The radar
The Ft Drum radar (KTYX), 95 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 116 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 274 m²/s²
- 0-3 km storm-relative helicity
- 327 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
571
ACUS11 KWNS 261857
SWOMCD
SPC MCD 261857
NHZ000-VTZ000-NYZ000-PAZ000-262000-
MESOSCALE DISCUSSION 0982
NWS STORM PREDICTION CENTER NORMAN OK
0157 PM CDT THU MAY 26 2011
AREAS AFFECTED...MUCH OF UPSTATE NY AND NRN VT
CONCERNING...TORNADO WATCH 380...382...
VALID 261857Z - 262000Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 380...382...CONTINUES.
BOUNDARY LAYER CONTINUES TO DESTABILIZE BENEATH NEUTRAL TO WEAK
HEIGHT RISES OVER PA INTO VT. CU FIELD REFLECTS THIS LACK OF LARGE
SCALE ASCENT WITH STRONGER UPDRAFTS CONGREGATING ALONG LAKE BREEZE
IN THE LEE OF LO AND OVER HIGHER TERRAIN DUE TO UNEVEN HEATING. AS
A RESULT ACTIVITY MAY STRUGGLE FOR ANOTHER FEW HOURS BUT WITH TIME
ISOLATED-SCT SEVERE TSTMS SHOULD EVOLVE OVER THIS REGION AS VERY
UNSTABLE AIR MASS IS IN PLACE.
..DARROW.. 05/26/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GYX...BTV...ALY...BGM...BUF...CTP...
LAT...LON 43737588 43747475 45037393 45037146 43787231 41897433
41887761 43737588SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 11:55 AM EDT | Mesoscale Discussion | SPC | Broome, Cayuga, Chemung, Chenango, Cortland, Delaware and 15 more | 95 min |
| May 26, 12:29 PM EDT | Tornado Watch | SPC | Clinton, Essex, Franklin, St. Lawrence | 8 hr |
| May 26, 2:16 PM EDT | Tornado Watch | SPC | Albany, Broome, Cayuga, Chemung, Chenango, Cortland and 26 more | 8 hr |
| May 26, 5:49 PM EDT | Mesoscale Discussion | SPC | Sullivan | 56 min |
| May 26, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Ontario and 1 more | 6 hr |
| May 26, 6:41 PM EDT | Mesoscale Discussion | SPC | Albany, Broome, Chenango, Cortland, Delaware, Essex and 16 more | 64 min |
Nearby
Mesoscale Discussions in New York, 2011Mesoscale Discussions in Vermont, 2011Every mesoscale discussion in 2011
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.