Alert archive / Nebraska / Mesoscale Discussions in 2016

Mesoscale Discussion 722

May 24, 20165 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 24, 2016, 10:56 PM MDT for 5 counties in Nebraska. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: May 24, 2016, 10:56 PM MDT (04:56 UTC)
Expired: May 25, 2016, 12:00 AM MDT
In force: 64 min
Issued by: the Storm Prediction Center

Counties Chase County, NE, Dundy County, NE, Hayes County, NE, Hitchcock County, NE, Lincoln County, NE

The radar

The Goodland radar (KGLD), 132 km from the middle of the area, began a volume at 04:59 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.9 hours before the alert went out and 104 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1159 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1520 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted.

843 
ACUS11 KWNS 250457
SWOMCD
SPC MCD 250456 
NEZ000-COZ000-250600-

MESOSCALE DISCUSSION 0722
NWS STORM PREDICTION CENTER NORMAN OK
1156 PM CDT TUE MAY 24 2016

AREAS AFFECTED...EXTREME NORTHEAST CO AND SOUTHWEST NEB

CONCERNING...TORNADO WATCH 206...

VALID 250456Z - 250600Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 206 CONTINUES.

SUMMARY...AN ISOLATED HAIL THREAT WILL REMAIN POSSIBLE WITH THE
STORM MOVING FROM NORTHERN YUMA COUNTY CO TO FAR SOUTHWEST NEB
THROUGH 07-08Z.  THE TORNADO THREAT APPEARS TO BE GREATLY DIMINISHED
AS THE YUMA STORM AND ANY ADDITIONAL STORMS SHOULD REMAIN NORTH OF
AN OUTFLOW BOUNDARY...THAT EXTENDED FROM NORTHWEST RED WILLOW COUNTY
NEB TO CHEYENNE COUNTY KS TO SOUTHERN YUMA COUNTY CO.

DISCUSSION...TRENDS IN RADAR IMAGERY INDICATED MOST OF THE STRONG TO
SEVERE STORMS HAVE MOVED EAST OF WW 206...EXCEPT FOR A STORM IN
NORTHERN YUMA COUNTY CO.  HOWEVER...THIS STORM WAS LOCATED NORTH OF
THE AFOREMENTIONED CONVECTIVE OUTFLOW BOUNDARY ATTENDANT TO THE MAIN
TSTM COMPLEX MOVING TOWARD CENTRAL NEB.  RESIDUAL MODERATE
INSTABILITY NEAR AND NORTH OF THE OUTFLOW BOUNDARY AND STRONG
EFFECTIVE BULK SHEAR SUPPORT AN ENVIRONMENT FAVORABLE FOR
SUSTAINED...ORGANIZED STORMS.  SINCE THE TORNADO THREAT APPEARS TO
BE GREATLY DIMINISHED...WW 206 SHOULD BE ALLOWED TO EXPIRE AT
06...DESPITE THE POTENTIAL FOR A FEW ELEVATED SEVERE STORMS POSSIBLE
THROUGH 07-08Z.

..PETERS.. 05/25/2016

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LBF...GLD...BOU...

LAT...LON   40530271 40550210 41080119 41370026 40810025 40460055
            40070097 40010204 40050283 40530271

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 6:09 PM MDT	Tornado Watch	SPC	Chase, Deuel, Dundy, Hayes, Hitchcock, Keith and 3 more	6 hr
May 24, 8:02 PM MDT	Mesoscale Discussion	SPC	Cherry, Sheridan	58 min
May 24, 8:49 PM MDT	Mesoscale Discussion	SPC	Gage, Jefferson, Nuckolls, Pawnee, Richardson, Thayer	86 min
May 24, 9:09 PM MDT	Severe Thunderstorm Watch	SPC	Gage, Johnson, Nemaha, Pawnee, Richardson	6 hr
May 24, 9:43 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Custer, Dawson, Franklin, Frontier and 15 more	92 min
May 24, 10:07 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Blaine, Buffalo, Custer, Dawson, Franklin and 17 more	6 hr
May 25, 2:33 AM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Chase, Dawson, Franklin, Frontier and 8 more	57 min
May 25, 1:52 PM MDT	Mesoscale Discussion	SPC	Arthur, Blaine, Boyd, Brown, Chase, Cherry and 16 more	53 min

Nearby

Mesoscale Discussions in Nebraska, 2016 Every 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.