Alert archive / Minnesota / Mesoscale Discussions in 2015

Mesoscale Discussion 1303

July 5, 201512 counties in Minnesota; 12 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2015, 9:54 AM CDT for 12 counties in Minnesota; 12 counties in North Dakota. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Jul 5, 2015, 9:54 AM CDT (14:54 UTC)
Expired
Jul 5, 2015, 11:30 AM CDT
In force
96 min
Issued by
the Storm Prediction Center
Chance of a watch
60%
All 24 counties

Becker County, MN, Beltrami County, MN, Cass County, MN, Clay County, MN, Clearwater County, MN, Hubbard County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Barnes County, ND, Cass County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, Nelson County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 16 km from the middle of the area, began a volume at 14:57 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 2.9 hours before the alert went out and 283 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2015-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1258 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2015-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1258 J/kg
Mixed-layer CIN
-267 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 10:40 AM CDTSevere Thunderstorm WatchSPCBecker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 5 more7 hr
Jul 5, 1:19 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Cass, Chippewa, Clay and 22 more86 min
Jul 5, 3:46 PM CDTMesoscale DiscussionSPCLincoln, Murray, Nobles, Pipestone, Rock119 min
Jul 5, 5:02 PM CDTMesoscale DiscussionSPCAitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 2 more118 min
Jul 5, 2:06 AM CDTMesoscale DiscussionSPCBillings, Golden Valley, McKenzie54 min

Nearby

Mesoscale Discussions in Minnesota, 2015Mesoscale Discussions in North Dakota, 2015Every mesoscale discussion in 2015

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.