Alert archive / Kentucky / Mesoscale Discussions in 2016
Mesoscale Discussion 548
The Storm Prediction Center issued this mesoscale discussion at May 7, 2016, 5:32 PM CDT for 4 states. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- May 7, 2016, 5:32 PM CDT (22:32 UTC)
- Expired
- May 7, 2016, 7:30 PM CDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
All 147 counties
Bond County, IL, Calhoun County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Greene County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Lawrence County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Pike County, IL, Pope County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Clark County, IN, Crawford County, IN, Daviess County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Scott County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Laurel County, KY, Lincoln County, KY, Livingston County, KY, Logan County, KY, Madison County, KY, Marion County, KY, McCreary County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Webster County, KY, Whitley County, KY, Woodford County, KY, City of Saint Louis, MO, Jefferson County, MO, Lincoln County, MO, Perry County, MO, Pike County, MO, Saint Charles County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO
The radar
The Evansville,IN radar (KVWX), 8 km from the middle of the area, began a volume at 22:34 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
Lincoln, IL (KILX), launched 12:00Z, 10.5 hours before the alert went out and 217 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
- 1 J/kg
- Mixed-layer CIN
- -438 J/kg
- Mixed-layer LCL
- 2063 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
945
ACUS11 KWNS 072233
SWOMCD
SPC MCD 072232
KYZ000-TNZ000-INZ000-ILZ000-MOZ000-080030-
MESOSCALE DISCUSSION 0548
NWS STORM PREDICTION CENTER NORMAN OK
0532 PM CDT SAT MAY 07 2016
AREAS AFFECTED...SOUTHERN ILLINOIS...SOUTHERN INDIANA...MUCH OF
KENTUCKY...AND A SMALL PART OF EAST-CENTRAL MISSOURI
CONCERNING...SEVERE THUNDERSTORM WATCH 145...
VALID 072232Z - 080030Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 145
CONTINUES.
SUMMARY...ONGOING STORMS WILL CONTINUE TO POSE A DAMAGING WIND
THREAT AS THEY PROPAGATE SOUTHEASTWARD THROUGH THE REMAINDER OF WW
145. A NEW DOWNSTREAM WATCH IS BEING CONSIDERED FOR PARTS OF
SOUTHERN INDIANA AND NORTHERN KENTUCKY.
DISCUSSION...A LINEAR COMPLEX OF STORMS HAS EVOLVED ACROSS SOUTHERN
ILLINOIS AND FAR EASTERN MISSOURI OVER THE PAST COUPLE OF HOURS.
WIDESPREAD STRONG TO SEVERE WIND GUSTS HAVE BEEN REPORTED WITH THIS
ACTIVITY...ESPECIALLY IN AREAS IN/NEAR THE STL METRO AREA AND POINTS
NORTHEAST. THE LINEAR ORIENTATION OF THESE STORMS...ALONG WITH
30-45 KNOT DEEP SHEAR AND WEAK TO MODERATE INSTABILITY /AROUND 1000
J/KG MUCAPE/ WILL SUSTAIN THESE STORMS AS THEY MIGRATE SOUTHEASTWARD
AT AROUND 40 KNOTS THROUGH THE WATCH AREA. AT THIS PACE...THE
STORMS SHOULD REACH EASTERN PORTIONS OF THE WATCH TOWARD 23-00Z.
DOWNSTREAM OF THIS ACTIVITY...ANOTHER SMALL LINEAR COMPLEX OF STORMS
IS LOCATED ACROSS CENTRAL KENTUCKY SOUTHEAST OF LOUISVILLE.
ALTHOUGH DEEP SHEAR IS MORE THAN SUFFICIENT FOR ORGANIZATION IN THIS
COMPLEX...WEAKER INSTABILITY APPEARS TO BE MITIGATING FACTOR FOR A
HIGHER DAMAGING WIND THREAT.
CONVECTIVE TRENDS WITH BOTH OF THESE COMPLEXES WILL BE
MONITORED...AND A NEW DOWNSTREAM WATCH FOR PARTS OF SOUTHERN INDIANA
AND NORTHERN KENTUCKY MAY BE NEEDED TOWARD 23-00Z.
..COOK/CORFIDI.. 05/07/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...JKL...ILN...LMK...OHX...IND...PAH...ILX...LSX...
LAT...LON 39199134 39449118 39849078 39939018 39908969 39908916
39688831 39488755 39258663 39068583 38818506 38558441
38268406 37798382 37368376 36998383 36768411 36618443
36618504 36748608 36878703 36968778 37238865 37578952
37909029 38149074 38569111 38939135 39199134SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 1:45 PM CDT | Mesoscale Discussion | SPC | Bond, Christian, Clark, Clay, Coles, Crawford and 17 more | 3 hr |
| May 7, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 26 more | 5 hr |
| May 7, 6:08 PM CDT | Severe Thunderstorm Watch | SPC | Franklin, Gallatin, Saline | 6 hr |
Nearby
Mesoscale Discussions in Kentucky, 2016Mesoscale Discussions in Illinois, 2016Mesoscale Discussions in Indiana, 2016Every mesoscale discussion in 2016
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.