Alert archive / Ohio / Mesoscale Discussions in 2011
Mesoscale Discussion 1019
The Storm Prediction Center issued this mesoscale discussion at May 29, 2011, 6:05 PM EDT for 4 counties in New York; 11 counties in Ohio; 4 counties in Pennsylvania. It was in force for 25 min.
The area
The outline as issued.
The facts
- Issued
- May 29, 2011, 6:05 PM EDT (22:05 UTC)
- Expired
- May 29, 2011, 6:30 PM EDT
- In force
- 25 min
- Issued by
- the Storm Prediction Center
Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Wyoming County, NY, Ashland County, OH, Ashtabula County, OH, Cuyahoga County, OH, Geauga County, OH, Lake County, OH, Lorain County, OH, Medina County, OH, Portage County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Crawford County, PA, Erie County, PA, Mercer County, PA, Warren County, PA
The radar
The Cleveland radar (KCLE), 140 km from the middle of the area, began a volume at 22:04 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 10.1 hours before the alert went out and 171 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
- 1688 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
995
ACUS11 KWNS 292206
SWOMCD
SPC MCD 292205
NYZ000-PAZ000-OHZ000-292230-
MESOSCALE DISCUSSION 1019
NWS STORM PREDICTION CENTER NORMAN OK
0505 PM CDT SUN MAY 29 2011
AREAS AFFECTED...NERN OH...NWRN PA...WRN NY
CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON
VALID 292205Z - 292230Z
ENVIRONMENTAL CONDITIONS HAVE BECOME FAVORABLE FOR SEVERE STORMS AND
A WATCH ISSUANCE WILL BE COORDINATED BETWEEN THE SPC AND THE
AFFECTED LOCAL NATIONAL WEATHER SERVICE OFFICES SHORTLY.
..HURLBUT.. 05/29/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...BUF...CTP...PBZ...CLE...
LAT...LON 42847834 42617811 41857905 41158024 40698213 40888248
41298254 41818248 42408090 42967897 42847834SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 1:02 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Cortland, Erie, Fulton and 23 more | 58 min |
| May 29, 12:59 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Henry, Lucas, Ottawa, Paulding and 4 more | 61 min |
| May 29, 1:29 PM EDT | Tornado Watch | SPC | Allen, Defiance, Fulton, Hancock, Henry, Lucas and 8 more | 7 hr |
| May 29, 4:17 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Henry, Lucas, Ottawa, Paulding and 3 more | 88 min |
| May 29, 6:17 PM EDT | Severe Thunderstorm Watch | SPC | Ashtabula, Cuyahoga, Erie, Geauga, Huron, Lake and 5 more | 5 hr |
| May 29, 6:51 PM EDT | Mesoscale Discussion | SPC | Allen, Fulton, Hancock, Henry, Lucas, Ottawa and 4 more | 54 min |
| May 29, 7:28 PM EDT | Mesoscale Discussion | SPC | Ashtabula, Cuyahoga, Erie, Geauga, Huron, Lake and 5 more | 62 min |
Nearby
Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in New York, 2011Mesoscale Discussions in Pennsylvania, 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.