Alert archive / Minnesota / Mesoscale Discussions in 2003

Mesoscale Discussion 2019

July 29, 20039 counties in Minnesota

The Storm Prediction Center issued this mesoscale discussion at Jul 29, 2003, 8:10 PM CDT for 9 counties in Minnesota. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jul 29, 2003, 8:10 PM CDT (01:10 UTC)
Expired
Jul 29, 2003, 9:15 PM CDT
In force
65 min
Issued by
the Storm Prediction Center

Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Crow Wing County, MN, Itasca County, MN, Kanabec County, MN, Koochiching County, MN, Pine County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 126 km from the middle of the area, began a volume at 01:14 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 00:00Z, 1.2 hours before the alert went out and 155 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, International Fa, MN at 00:00Z on 2003-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 449 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, International Fa, MN at 00:00Z on 2003-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
449 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
2131 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 30, 12:26 PM CDTMesoscale DiscussionSPCAitkin, Carlton, Crow Wing, Pine2 hr
Jul 30, 2:06 PM CDTMesoscale DiscussionSPCHouston114 min

Nearby

Mesoscale Discussions in Minnesota, 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.