Alert archive / Ohio / Mesoscale Discussions in 2011
Mesoscale Discussion 712
The Storm Prediction Center issued this mesoscale discussion at May 10, 2011, 4:32 PM EDT for 4 states. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- May 10, 2011, 4:32 PM EDT (20:32 UTC)
- Expired
- May 10, 2011, 6:00 PM EDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 73 counties
Adams County, IN, Blackford County, IN, Delaware County, IN, Grant County, IN, Huntington County, IN, Jay County, IN, Randolph County, IN, Union County, IN, Wayne County, IN, Wells County, IN, Bath County, KY, Boyd County, KY, Bracken County, KY, Campbell County, KY, Carter County, KY, Elliott County, KY, Fleming County, KY, Floyd County, KY, Greenup County, KY, Johnson County, KY, Kenton County, KY, Knott County, KY, Lawrence County, KY, Lewis County, KY, Magoffin County, KY, Martin County, KY, Mason County, KY, Menifee County, KY, Morgan County, KY, Nicholas County, KY, Pendleton County, KY, Pike County, KY, Robertson County, KY, Rowan County, KY, Wolfe County, KY, Adams County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Jackson County, OH, Lawrence County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Van Wert County, OH, Vinton County, OH, Warren County, OH, Cabell County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Putnam County, WV, Wayne County, WV
The radar
The Cincinnati radar (KILN), 19 km from the middle of the area, began a volume at 20:32 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.5 hours before the alert went out and 18 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
- 9 J/kg
- Mixed-layer CIN
- -487 J/kg
- Mixed-layer LCL
- 1473 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
706
ACUS11 KWNS 102032
SWOMCD
SPC MCD 102032
WVZ000-OHZ000-KYZ000-INZ000-102200-
MESOSCALE DISCUSSION 0712
NWS STORM PREDICTION CENTER NORMAN OK
0332 PM CDT TUE MAY 10 2011
AREAS AFFECTED...IND THROUGH CNTRL AND NERN KY...SWRN OH...WRN WV
CONCERNING...SEVERE THUNDERSTORM WATCH 268...270...
VALID 102032Z - 102200Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
268...270...CONTINUES.
SEVERE STORMS WITH VERY LARGE HAIL AND DAMAGING WIND WILL REMAIN
LIKELY NEXT FEW HOURS MAINLY OVER ERN PARTS OF WW 268 AND 270 FROM
NERN IND...SWRN OH...ERN KY AND SWRN WV. ADDITIONAL DEVELOPMENT
FARTHER W IN IND AND CNTRL KY REMAINS UNCERTAIN.
NUMEROUS STORMS INCLUDING A FEW SUPERCELLS CONTINUE IN VICINITY OF
NW-SE ORIENTED QUASISTATIONARY FRONT AND ALONG ERN PERIPHERY OF
STRONGER EML/CAP FROM NERN IND THROUGH SWRN OH INTO ERN KY. STORMS
HAVE BECOME ROOTED IN THE BOUNDARY LAYER WHERE THE ATMOSPHERE IS
STRONGLY UNSTABLE /2000-3000 J/KG MLCAPE/ AND 40 KT NWLY EFFECTIVE
SHEAR SUPPORTIVE OF SUPERCELLS AND STORM SPLITS WITH VERY LARGE HAIL
LIKELY. SOME OF THE ACTIVITY MAY EVENTUALLY EVOLVE INTO
CLUSTERS/BOWS AS THEY MOVE SEWD WITH AN INCREASING THREAT FOR
DAMAGING WIND. DEVELOPMENT FARTHER W THROUGH CNTRL KY AND IND IS
MORE UNCERTAIN DUE TO WARMER TEMPERATURES ALOFT ALONG BASE OF EML
AND PROXIMITY TO UPPER RIDGE AXIS.
ADDITIONAL THUNDERSTORM DEVELOPMENT ACROSS NRN IND IS ALSO UNCERTAIN
BUT POSSIBLE...ESPECIALLY IN ASSOCIATION WITH NWRN MOVING OUTFLOW
BOUNDARY. THIS REGION IS VERY UNSTABLE...AND IF SURFACE BASED STORMS
DEVELOP THEY WILL RAPIDLY BECOME SEVERE.
..DIAL.. 05/10/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...RLX...JKL...ILN...LMK...IWX...IND...
LAT...LON 41138462 39848282 38438156 37458210 37268305 38648433
40798593 41138462SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 11:21 AM EDT | Mesoscale Discussion | SPC | Bartholomew, Clark, Dearborn, Decatur, Fayette, Franklin and 13 more | 114 min |
| May 10, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | Bartholomew, Boone, Brown, Carroll, Clark, Clay and 51 more | 7 hr |
| May 10, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allen, Benton, Blackford, Cass, DeKalb and 19 more | 4 hr |
| May 10, 7:17 PM EDT | Mesoscale Discussion | SPC | Bath, Boyd, Breathitt, Carter, Elliott, Fleming and 17 more | 28 min |
| May 10, 7:45 PM EDT | Severe Thunderstorm Watch | SPC | Bath, Boyd, Carter, Elliott, Fleming, Floyd and 10 more | 5 hr |
| May 10, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | McDowell, Mercer, Monroe, Raleigh, Summers, Wyoming | 8 hr |
| May 10, 6:02 PM EDT | Mesoscale Discussion | SPC | Logan, McDowell | 58 min |
Nearby
Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in Indiana, 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.