Alert archive / Minnesota / Mesoscale Discussions in 2016

Mesoscale Discussion 959

June 17, 201611 counties in Minnesota; 5 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2016, 7:32 AM CDT for 11 counties in Minnesota; 5 counties in North Dakota. It was in force for 28 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2016, 7:32 AM CDT (12:32 UTC)
Expired: Jun 17, 2016, 8:00 AM CDT
In force: 28 min
Issued by: the Storm Prediction Center

Counties Beltrami County, MN, Clearwater County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Grand Forks County, ND, Pembina County, ND, Steele County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 135 km from the middle of the area, began a volume at 12:35 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

International Fa, MN (KINL), launched 12:00Z, 0.5 hours before the alert went out and 186 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1685 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

262 
ACUS11 KWNS 171232
SWOMCD
SPC MCD 171232 
MNZ000-NDZ000-171300-

MESOSCALE DISCUSSION 0959
NWS STORM PREDICTION CENTER NORMAN OK
0732 AM CDT FRI JUN 17 2016

AREAS AFFECTED...NORTHWEST MN...NORTHEAST ND

CONCERNING...SEVERE THUNDERSTORM WATCH 264...

VALID 171232Z - 171300Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 264
CONTINUES.

SUMMARY...AN INTENSE STORM CLUSTER ACROSS NORTHEAST NORTH DAKOTA
SHOULD CONTINUE NORTHEAST ALONG A STATIONARY FRONT INTO NORTHWEST
MINNESOTA. SEVERE WIND GUSTS SHOULD REMAIN THE PRIMARY HAZARD.

DISCUSSION...12Z ABERDEEN RAOB SAMPLED A VERY UNSTABLE AIR MASS WITH
MUCAPE AROUND 3500 J/KG AMID RATHER STEEP 700-500 MB LAPSE RATES
NEAR 8.5 DEG C/KM. WHILE THE ONGOING CLUSTER WILL PASS THE NORTHERN
EXTENT OF THE INSTABILITY AXIS SHORTLY...THE ORGANIZED NATURE OF THE
CLUSTER SHOULD RESULT IN ONLY A SLOWLY DIMINISHING RISK THROUGH LATE
MORNING. GREATEST CHANCE FOR SUSTAINING SEVERE WIND GUSTS WILL
LIKELY BE ALONG AND JUST NORTH OF THE QUASI-STATIONARY FRONT THAT IS
PRESENT FROM POLK TO BELTRAMI COUNTIES IN MN.

..GRAMS.. 06/17/2016

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

ATTN...WFO...DLH...FGF...

LAT...LON   47159540 47159550 47159554 47159555 47249795 48209829
            48369831 48549831 49009723 49389515 49369495 49369494
            49319481 48709443 48029441 47599441 47509441 47439441
            47409441 47159516 47159531 47159540 47159540

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 5:44 AM CDT	Mesoscale Discussion	SPC	Kittson, Marshall	61 min
Jun 17, 7:20 AM CDT	Severe Thunderstorm Watch	SPC	Beltrami, Clearwater, Kittson, Lake of the Woods, Marshall, Pennington and 3 more	4 hr
Jun 17, 9:56 AM CDT	Mesoscale Discussion	SPC	Beltrami, Cass, Clearwater, Douglas, Grant, Hubbard and 4 more	34 min
Jun 17, 2:31 PM CDT	Mesoscale Discussion	SPC	Brown, Chippewa, Cottonwood, Jackson, Kandiyohi, Lac qui Parle and 14 more	89 min
Jun 17, 3:06 PM CDT	Severe Thunderstorm Watch	SPC	Blue Earth, Brown, Carver, Chippewa, Cottonwood, Jackson and 21 more	7 hr
Jun 17, 6:13 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Faribault, Jackson, Martin, Nobles, Pipestone and 2 more	92 min
Jun 17, 12:36 AM CDT	Mesoscale Discussion	SPC	Billings, Bowman, Dunn, Golden Valley, Hettinger, Mercer and 2 more	84 min
Jun 17, 1:26 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Billings, Bowman, Burleigh, Dunn, Emmons and 17 more	6 hr
Jun 17, 3:23 AM CDT	Mesoscale Discussion	SPC	Barnes, Burleigh, Eddy, Foster, Griggs, Kidder and 7 more	97 min

Nearby

Mesoscale Discussions in Minnesota, 2016 Mesoscale Discussions in North Dakota, 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.