Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 1447

June 21, 200316 counties in Minnesota; 9 counties in North Dakota; 5 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2003, 9:13 PM CDT for 16 counties in Minnesota; 9 counties in North Dakota; 5 counties in South Dakota. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued
Jun 21, 2003, 9:13 PM CDT (02:13 UTC)
Expired
Jun 21, 2003, 10:45 PM CDT
In force
92 min
Issued by
the Storm Prediction Center
All 30 counties

Becker County, MN, Big Stone County, MN, Clay County, MN, Clearwater County, MN, Grant County, MN, Kittson County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Traverse County, MN, Wilkin County, MN, Cass County, ND, Grand Forks County, ND, Pembina County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Walsh County, ND, Brown County, SD, Day County, SD, Grant County, SD, Marshall County, SD, Roberts County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 103 km from the middle of the area, began a volume at 02:17 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

Aberdeen, SD (KABR), launched 00:00Z, 2.2 hours before the alert went out and 211 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, Aberdeen, SD at 00:00Z on 2003-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4880 joules per kilogram.LCLEL10008507005003002001001 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, Aberdeen, SD at 00:00Z on 2003-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 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
4880 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
801 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
3.6
Supercell composite
20.0

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
Jun 22, 12:45 AM CDTMesoscale DiscussionSPCBig Stone, Clay, Grant, Kittson, Marshall, Norman and 6 more60 min
Jun 22, 2:55 PM CDTTornado WatchSPCBecker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 27 more6 hr
Jun 22, 3:35 PM CDTTornado WatchSPCJackson, Nobles, Rock5 hr
Jun 22, 5:59 PM CDTMesoscale DiscussionSPCBecker, Beltrami, Big Stone, Chippewa, Clay, Clearwater and 24 more61 min
Jun 22, 6:31 PM CDTMesoscale DiscussionSPCAitkin, Benton, Cass, Crow Wing, Isanti, Itasca and 6 more89 min
Jun 22, 1:47 PM CDTMesoscale DiscussionSPCAdams, Billings, Bowman, Dunn, Golden Valley, Grant and 4 more118 min
Jun 22, 2:15 PM CDTSevere Thunderstorm WatchSPCAdams, Billings, Bowman, Burleigh, Dunn, Emmons and 11 more7 hr
Jun 22, 5:48 PM CDTMesoscale DiscussionSPCAdams, Billings, Bowman, Burleigh, Dunn, Emmons and 11 more117 min
Jun 21, 7:54 PM CDTMesoscale DiscussionSPCAurora, Beadle, Bennett, Bon Homme, Brule, Buffalo and 28 more66 min
Jun 21, 8:15 PM CDTSevere Thunderstorm WatchSPCAurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 26 more6 hr
Jun 21, 10:26 PM CDTMesoscale DiscussionSPCAurora, Beadle, Brule, Buffalo, Charles Mix, Clark and 15 more94 min
Jun 22, 1:27 AM CDTMesoscale DiscussionSPCAurora, Beadle, Bon Homme, Brule, Buffalo, Charles Mix and 25 more63 min
Jun 22, 2:27 PM CDTMesoscale DiscussionSPCAurora, Beadle, Bon Homme, Brookings, Brule, Buffalo and 27 more2 hr

Nearby

Mesoscale Discussions in Minnesota, 2003Mesoscale Discussions in North Dakota, 2003Mesoscale Discussions in South Dakota, 2003Every mesoscale discussion in 2003

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.