Alert archive / Nebraska / Mesoscale Discussions in 2016
Mesoscale Discussion 562
The Storm Prediction Center issued this mesoscale discussion at May 8, 2016, 7:48 PM CDT for 5 counties in Kansas; 29 counties in Nebraska. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- May 8, 2016, 7:48 PM CDT (00:48 UTC)
- Expired
- May 8, 2016, 9:45 PM CDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 34 counties
Clay County, KS, Cloud County, KS, Ottawa County, KS, Republic County, KS, Washington County, KS, Adams County, NE, Blaine County, NE, Brown County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Loup County, NE, Merrick County, NE, Nuckolls County, NE, Phelps County, NE, Rock County, NE, Saline County, NE, Seward County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Wheeler County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 42 km from the middle of the area, began a volume at 00:53 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
Omaha, NE (KOAX), launched 00:00Z, 0.8 hours before the alert went out and 170 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
- 104 J/kg
- Mixed-layer CIN
- -194 J/kg
- Mixed-layer LCL
- 1219 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
549
ACUS11 KWNS 090049
SWOMCD
SPC MCD 090048
KSZ000-NEZ000-090245-
MESOSCALE DISCUSSION 0562
NWS STORM PREDICTION CENTER NORMAN OK
0748 PM CDT SUN MAY 08 2016
AREAS AFFECTED...CENTRAL/SOUTHEAST NEB AND NORTHEAST KS
CONCERNING...SEVERE THUNDERSTORM WATCH 151...
VALID 090048Z - 090245Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 151
CONTINUES.
SUMMARY...BOUTS OF SEVERE HAIL/LOCALLY DAMAGING WINDS...ALONG WITH
SOME TORNADO RISK NEAR/SOUTH OF THE NEB-KS BORDER VICINITY...WILL
CONTINUE THIS EVENING...AND MAY EVENTUALLY MOVE INTO PARTS OF
SOUTHEAST NEB/NORTHEAST KS. SEVERE THUNDERSTORM WATCH 151 CONTINUES
UNTIL 05Z/MIDNIGHT CDT. CONVECTIVE TRENDS ARE BEING MONITORED FOR AN
ADDITIONAL /OR REPLACEMENT/ WATCH ACROSS NORTH-CENTRAL/NORTHEAST KS
INTO SOUTHEAST NEB.
DISCUSSION...CELL MERGERS ACROSS NORTH-CENTRAL KS HAVE LED TO AN
UPSCALE-GROWING LINEARLY ORGANIZED COMPLEX OF STORMS...ALTHOUGH A
SEMI-DISCRETE SUPERCELL WITH A TORNADIC HISTORY PERSISTS ACROSS
EASTERN ROOKS/WESTERN OSBORNE COUNTIES KS AS OF 0045Z/745 PM CDT.
SOME TORNADO POTENTIAL WILL CONTINUE MAINLY ACROSS NORTH-CENTRAL KS
AND POSSIBLY EVENTUALLY A PART OF NORTHEAST KS...WHILE LOCALLY
DAMAGING WINDS/BOUTS OF HAIL WILL OTHERWISE REMAIN POSSIBLE ACROSS
SOUTH-CENTRAL NEB. THESE STORMS SHOULD GENERALLY CONTINUE
EAST-NORTHEASTWARD THIS EVENING...AND COULD EVENTUALLY MOVE OUT OF
CURRENT WATCHES 150/151 TOWARD/AFTER 930 PM CDT. 00Z OBSERVED
SOUNDINGS FROM OMAHA/TOPEKA SAMPLED A RELATIVELY DRY/STABLE AIR
MASS...BUT AT LEAST A SMALL PART OF NORTHEAST KS/SOUTHEAST NEB COULD
WARRANT AN ADDITIONAL WATCH. FARTHER NORTH...AN EPISODIC SEVERE RISK
MAY CONTINUE IN THE SHORT TERM ACROSS SOUTHWEST INTO NORTH-CENTRAL
NEB...BUT OVERALL UPDRAFT/DOWNDRAFT INTENSITIES SHOULD WANE THROUGH
MID/LATE EVENING AS THE BOUNDARY LAYER CONTINUES TO COOL.
..GUYER.. 05/09/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...OAX...TOP...ICT...GID...LBF...
LAT...LON 40269816 40570020 42530016 42559853 41369813 41049740
40599662 38949684 38959798 40029791 40269816SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Cloud, Ottawa, Republic, Washington | 3 hr |
| May 8, 11:17 PM CDT | Mesoscale Discussion | SPC | Clay, Cloud, Ellis, Ellsworth, Jewell, Lincoln and 10 more | 88 min |
| May 8, 11:56 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Cloud, Ellis, Ellsworth, Jewell, Lincoln and 9 more | 4 hr |
| May 9, 3:35 AM CDT | Mesoscale Discussion | SPC | Butler, Chase, Clay, Cloud, Dickinson, Geary and 23 more | 115 min |
| May 9, 1:46 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Butler and 53 more | 59 min |
| May 9, 2:07 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Brown, Butler, Chase, Chautauqua and 41 more | 10 hr |
| May 9, 5:29 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Barber, Bourbon, Brown and 48 more | 61 min |
| May 9, 2:26 PM CDT | Mesoscale Discussion | SPC | Boyd, Cedar, Dakota, Dixon, Knox, Pierce and 2 more | 94 min |
| May 9, 4:52 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Buffalo, Burt, Butler, Cass and 37 more | 53 min |
| May 9, 5:13 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Burt, Butler, Cass, Clay and 36 more | 6 hr |
Nearby
Mesoscale Discussions in Nebraska, 2016Mesoscale Discussions in Kansas, 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.