Alert archive / Minnesota / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 119, NWS Duluth, MN

September 19, 2014Koochiching County, Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Sep 19, 2014, 10:18 PM CDT for Koochiching County, Saint Louis County, Minnesota. It was in force for 27 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
Sep 19, 2014, 10:18 PM CDT (03:18 UTC)
Expired
Sep 19, 2014, 10:45 PM CDT
In force
27 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Koochiching County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 138 km from the middle of the area, began a volume at 03:20 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, 3.3 hours before the alert went out and 74 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 2014-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 572 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 2014-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
572 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 9:07 PM CDTSpecial Weather StatementDLHKoochiching23 min
Sep 19, 9:32 PM CDTSpecial Weather StatementDLHKoochiching13 min
Sep 19, 9:41 PM CDTSevere Thunderstorm WarningDLHKoochiching34 min
Sep 19, 10:51 PM CDTSpecial Weather StatementDLH24 min
Sep 19, 11:13 PM CDTSpecial Weather StatementDLH17 min
Sep 19, 11:32 PM CDTSpecial Weather StatementDLH13 min
Sep 19, 11:50 PM CDTSpecial Weather StatementDLH25 min
Sep 20, 12:19 AM CDTSpecial Weather StatementDLH26 min
Sep 20, 12:52 AM CDTSpecial Weather StatementDLH23 min
Sep 20, 3:08 PM CDTSpecial Weather StatementDLHCass17 min
Sep 20, 3:31 PM CDTSpecial Weather StatementDLHCass14 min
Sep 20, 3:34 PM CDTSpecial Weather StatementDLHCrow Wing16 min
Sep 20, 3:47 PM CDTSpecial Weather StatementDLHCass18 min
Sep 20, 3:49 PM CDTSpecial Weather StatementDLHCrow Wing26 min
Sep 20, 4:04 PM CDTSpecial Weather StatementDLHCass11 min
Sep 20, 4:06 PM CDTSpecial Weather StatementDLHCrow Wing9 min
Sep 20, 4:09 PM CDTSpecial Weather StatementDLHItasca21 min
Sep 20, 4:20 PM CDTSpecial Weather StatementDLHCrow Wing15 min
Sep 20, 4:21 PM CDTSpecial Weather StatementDLHCrow Wing14 min
Sep 20, 4:30 PM CDTSpecial Weather StatementDLHItasca15 min
Sep 20, 4:37 PM CDTSpecial Weather StatementDLHAitkin78 min
Sep 20, 4:40 PM CDTSpecial Weather StatementDLHAitkin20 min
Sep 20, 4:52 PM CDTSpecial Weather StatementDLHItasca23 min
Sep 20, 4:54 PM CDTSpecial Weather StatementDLHAitkin21 min
Sep 20, 5:17 PM CDTSpecial Weather StatementDLHCarlton28 min
Sep 20, 5:23 PM CDTSpecial Weather StatementDLHItasca22 min
Sep 20, 5:46 PM CDTSpecial Weather StatementDLHCarlton, Pine14 min
Sep 20, 5:48 PM CDTSpecial Weather StatementDLHSaint Louis12 min
Sep 20, 5:59 PM CDTSpecial Weather StatementDLHPine31 min
Sep 20, 6:04 PM CDTSpecial Weather StatementDLHSaint Louis26 min
Sep 20, 6:14 PM CDTSpecial Marine WarningDLH91 min
Sep 20, 6:33 PM CDTSpecial Weather StatementDLHSaint Louis12 min
Sep 20, 6:24 PM CDTSpecial Weather StatementDLHDouglas36 min
Sep 20, 6:27 PM CDTSpecial Weather StatementDLHBurnett, Washburn33 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2014Every severe thunderstorm warning in 2014

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.