Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 29, NWS Duluth, MN

July 16, 1997Lake County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 16, 1997, 3:43 AM CDT for Lake County, Minnesota. It was in force for 32 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 16, 1997, 3:43 AM CDT (08:43 UTC)
Expired: Jul 16, 1997, 4:15 AM CDT
In force: 32 min
Issued by: NWS Duluth, MN
Area: Whole counties

County Lake County, MN

The radar

The Duluth radar (KDLH), 97 km from the middle of the area, began a volume at 08:47 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 8.7 hours before the alert went out and 424 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1340 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1495 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 16, 2:36 AM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jul 16, 2:36 AM CDT, 1 hour 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 1:22 AM CDT	Severe Thunderstorm Warning	DLH	Cook	38 min
Jul 16, 3:13 AM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	32 min
Jul 16, 5:10 AM CDT	Severe Thunderstorm Warning	DLH	Pine	65 min
Jul 16, 11:05 AM CDT	Severe Thunderstorm Warning	DLH	Carlton	55 min
Jul 16, 4:57 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	63 min
Jul 16, 8:25 AM CDT	Severe Thunderstorm Warning	DLH	Douglas, Washburn	35 min
Jul 16, 10:27 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield	63 min
Jul 16, 11:26 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Iron	49 min
Jul 16, 12:18 PM CDT	Severe Thunderstorm Warning	DLH	Iron	57 min
Jul 16, 2:43 PM CDT	Severe Thunderstorm Warning	DLH	Sawyer	62 min
Jul 16, 3:00 PM CDT	Severe Thunderstorm Warning	DLH	Price	60 min
Jul 16, 3:28 PM CDT	Tornado Warning	DLH	Sawyer	47 min
Jul 16, 3:57 PM CDT	Severe Thunderstorm Warning	DLH	Price	63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997 Every severe thunderstorm warning in 1997

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.