Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 24, NWS Duluth, MN
NWS Duluth, MN issued this severe thunderstorm warning at May 29, 2018, 7:28 PM CDT for Cook County, Lake County, Saint Louis County, Minnesota. It was in force for 47 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
- May 29, 2018, 7:28 PM CDT (00:28 UTC)
- Expired
- May 29, 2018, 8:15 PM CDT
- In force
- 47 min
- Issued by
- NWS Duluth, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cook County, MN, Lake County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 106 km from the middle of the area, began a volume at 00:31 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
Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 351 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.
- Mixed-layer CAPE
- 255 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1024 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 226 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.7
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 May 29, 6:42 PM CDT, 46 minutes earlier.
Area forecast discussion, May 29, 6:42 PM CDT, 46 minutes before
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</html>Hazardous weather outlook, May 29, 2:19 PM CDT, 5 hours 9 minutes before
Hazardous Weather Outlook National Weather Service Duluth MN 219 PM CDT Tue May 29 2018 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-301030- Koochiching-North St. Louis-Northern Cook/Northern Lake- North Itasca-Central St. Louis-Southern Lake/North Shore- Southern Cook/North Shore-North Cass-South Itasca-South Cass- Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis- Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price- 219 PM CDT Tue May 29 2018 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...This afternoon and Tonight Thunderstorms will develop across the Northland this afternoon into this evening. Storms will develop first over central and north central Minnesota and spread east overnight. Some of the storms may be severe, with damaging wind and large hail the main threats. Heavy rain will also be possible as storms track over the same area. The severe threat will be greatest over far northwest Wisconsin into much of northern Minnesota and continue into late evening. .DAYS TWO THROUGH SEVEN...Wednesday through Monday There is a chance of thunderstorms Wednesday through Thursday. .SPOTTER INFORMATION STATEMENT... Skywarn Spotters may be needed this afternoon into this evening. LSZ121-140>148-301030- Bayfield to Oak Point WI-Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- Taconite Harbor to Silver Bay Harbor MN- Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN- Duluth MN to Port Wing WI-Port Wing to Sand Island WI- Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI- 219 PM CDT Tue May 29 2018 This Hazardous Weather Outlook is for portions of the Nearshore waters of western Lake Superior. .DAY ONE...This afternoon and Tonight Thunderstorms are possible over western Lake Superior this evening and overnight. An isolated severe storm is possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Periods of thunderstorms are possible Wednesday through Thursday. Strong east to northeast flow will likely develop Friday and Saturday morning. The winds and resulting waves could cause hazardous conditions for small craft. Melde/JTS More information may be obtained at the following web address: http://www.weather.gov/duluth (all lower case)
In the hours before
Special weather statement, May 29, 6:32 PM CDT, 56 minutes before
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</html>Local storm report, May 29, 6:50 PM CDT, 38 minutes before
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</html>Local storm report, May 29, 6:57 PM CDT, 31 minutes before
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</html>Local storm report, May 29, 6:59 PM CDT, 29 minutes before
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</html>The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 7:30 PM CDT | Special Marine Warning | DLH | 60 min | |
| May 29, 8:00 PM CDT | Special Marine Warning | DLH | 60 min | |
| May 29, 9:12 PM CDT | Special Weather Statement | DLH | Cook | 18 min |
| May 29, 9:31 PM CDT | Special Weather Statement | DLH | Cook | 14 min |
| May 30, 8:42 AM CDT | Special Marine Warning | DLH | 63 min | |
| May 30, 8:56 AM CDT | Special Marine Warning | DLH | 49 min | |
| May 30, 9:43 AM CDT | Special Marine Warning | DLH | 47 min | |
| May 29, 7:12 PM CDT | Special Weather Statement | DLH | Sawyer | 18 min |
| May 29, 7:30 PM CDT | Special Weather Statement | DLH | Douglas | 15 min |
| May 29, 7:44 PM CDT | Special Weather Statement | DLH | Bayfield | 31 min |
| May 30, 6:08 AM CDT | Special Weather Statement | DLH | Sawyer | 37 min |
| May 30, 6:56 AM CDT | Special Weather Statement | DLH | Bayfield | 34 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2018Every severe thunderstorm warning in 2018
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.