Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 764

May 19, 20048 counties in Minnesota; 12 counties in North Dakota; 8 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 19, 2004, 2:35 PM CDT for 8 counties in Minnesota; 12 counties in North Dakota; 8 counties in South Dakota. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
May 19, 2004, 2:35 PM CDT (19:35 UTC)
Expired
May 19, 2004, 4:30 PM CDT
In force
115 min
Issued by
the Storm Prediction Center
All 28 counties

Clay County, MN, Kittson County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Traill County, ND, Brown County, SD, Day County, SD, Edmunds County, SD, Faulk County, SD, Hyde County, SD, Marshall County, SD, McPherson County, SD, Spink County, SD

The radar

The Fargo/Grand Forks radar (KMVX), 36 km from the middle of the area, began a volume at 19:36 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, 7.6 hours before the alert went out and 256 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 2004-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2004-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 373 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
684 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
373 m²/s²
0-3 km storm-relative helicity
363 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 19, 3:00 PM CDTTornado WatchSPCClay, Norman5 hr
May 19, 3:03 PM CDTMesoscale DiscussionSPCBenton, Blue Earth, Brown, Carver, Cottonwood, Jackson and 18 more117 min
May 19, 5:35 PM CDTSevere Thunderstorm WatchSPCBlue Earth, Dodge, Faribault, Freeborn, Martin, Steele and 2 more5 hr
May 19, 6:09 PM CDTMesoscale DiscussionSPCClay, Norman96 min
May 19, 1:45 PM CDTMesoscale DiscussionSPCBenson, Bottineau, Cavalier, McHenry, McLean, Nelson and 6 more2 hr
May 19, 2:15 PM CDTSevere Thunderstorm WatchSPCBenson, Bottineau, Cavalier, Eddy, Grand Forks, McHenry and 12 more6 hr
May 19, 5:20 PM CDTMesoscale DiscussionSPCBenson, Bottineau, Cavalier, Eddy, Grand Forks, McHenry and 11 more115 min

Nearby

Mesoscale Discussions in North Dakota, 2004Mesoscale Discussions in Minnesota, 2004Mesoscale Discussions in South Dakota, 2004Every mesoscale discussion in 2004

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.