Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 41, NWS Duluth, MN

July 6, 2013Cook County, Lake County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 6, 2013, 2:24 PM CDT for Cook County, Lake County, Minnesota. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 6, 2013, 2:24 PM CDT (19:24 UTC)
Expired
Jul 6, 2013, 3:00 PM CDT
In force
36 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Cook County, MN, Lake County, MN

The radar

The Duluth radar (KDLH), 131 km from the middle of the area, began a volume at 19:23 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, 7.4 hours before the alert went out and 199 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 12:00Z on 2013-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 76 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 12:00Z on 2013-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
76 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1266 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 8:09 PM CDTSpecial Weather StatementDLHKoochiching21 min
Jul 5, 8:30 PM CDTSpecial Weather StatementDLHKoochiching15 min
Jul 5, 8:45 PM CDTSpecial Weather StatementDLHKoochiching15 min
Jul 5, 9:03 PM CDTSpecial Weather StatementDLHKoochiching12 min
Jul 5, 9:20 PM CDTSpecial Weather StatementDLHKoochiching25 min
Jul 5, 9:46 PM CDTSpecial Weather StatementDLH29 min
Jul 5, 9:56 PM CDTSpecial Weather StatementDLH19 min
Jul 5, 10:15 PM CDTSpecial Weather StatementDLHKoochiching15 min
Jul 5, 10:30 PM CDTSpecial Weather StatementDLHKoochiching15 min
Jul 5, 10:47 PM CDTSpecial Weather StatementDLH13 min
Jul 5, 11:47 PM CDTSpecial Weather StatementDLHLake13 min
Jul 6, 8:52 AM CDTSpecial Weather StatementDLHKoochiching23 min
Jul 6, 12:28 PM CDTSpecial Weather StatementDLHSaint Louis17 min
Jul 6, 1:21 PM CDTSpecial Weather StatementDLHLake39 min
Jul 6, 2:50 PM CDTSpecial Weather StatementDLH25 min
Jul 6, 2:53 PM CDTSpecial Weather StatementDLHLake37 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013Every severe thunderstorm warning in 2013

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.