Alert archive / Michigan / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 51, NWS Marquette, MI
NWS Marquette, MI issued this severe thunderstorm warning at Aug 21, 2020, 2:33 PM CDT for Dickinson County, Marquette County, Menominee County, Michigan. It was in force for 30 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
- Aug 21, 2020, 2:33 PM CDT (19:33 UTC)
- Expired
- Aug 21, 2020, 3:03 PM CDT
- In force
- 30 min
- Issued by
- NWS Marquette, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Dickinson County, MI, Marquette County, MI, Menominee County, MI
The radar
The Marquette radar (KMQT), 52 km from the middle of the area, began a volume at 19:36 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 12:00Z, 7.6 hours before the alert went out and 180 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
- 27 J/kg
- Mixed-layer CIN
- -410 J/kg
- Mixed-layer LCL
- 1482 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 21, 12:39 PM CDT, 1 hour 54 minutes earlier.
Area forecast discussion, Aug 21, 12:39 PM CDT, 1 hour 54 minutes before
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</html>Hazardous weather outlook, Aug 21, 3:44 AM CDT, 10 hours 49 minutes before
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</html>In the hours before
Special weather statement, Aug 21, 1:45 PM CDT, 48 minutes before
Special Weather Statement National Weather Service Marquette MI 245 PM EDT Fri Aug 21 2020 MIZ004-005-010-011-211915- Marquette MI-Baraga MI-Iron MI-Dickinson MI- 245 PM EDT Fri Aug 21 2020 ...SPECIAL WEATHER STATEMENT... At 243 PM EDT/143 PM CDT/, Doppler radar was tracking strong thunderstorms along a line extending from near Three Lakes to 10 miles northwest of Watson. Movement was southeast at 15 mph. Half inch hail, winds in excess of 30 mph and brief torrential rainfall will be possible with these storms. Locations impacted include... Watson, Michigamme, Squaw Lake, Lake Michigamme, Witch Lake, Three Lakes, Republic, Big Bass Lake, Arnold, Northland, McFarland, Anderson Lake, Ned Lake and Bone Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... If outdoors, seek shelter until these storms pass. && LAT...LON 4641 8843 4660 8827 4618 8723 4598 8741 TIME...MOT...LOC 1843Z 302DEG 12KT 4649 8828 4614 8753 Rolfson
Special weather statement, Aug 21, 2:16 PM CDT, 17 minutes before
Special Weather Statement
National Weather Service Marquette MI
316 PM EDT Fri Aug 21 2020
MIZ004-005-010>012-211930-
Marquette MI-Baraga MI-Iron MI-Menominee MI-Dickinson MI-
316 PM EDT Fri Aug 21 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN IRON...NORTHERN
DICKINSON...NORTH CENTRAL MENOMINEE...SOUTHWESTERN MARQUETTE AND
SOUTH CENTRAL BARAGA COUNTIES UNTIL 330 PM EDT/230 PM CDT/...
At 315 PM EDT/215 PM CDT/, Doppler radar was tracking strong
thunderstorms along a line extending from 6 miles south of Three
Lakes to near La Branche. Movement was southeast at 15 mph.
Penny size hail, wind gusts up to 50 mph, and torrential rainfall
will be possible with these storms.
Locations impacted include...
Watson, Michigamme, Squaw Lake, Witch Lake, U.S. 141 between
Covington and Amasa, Republic, Ralph, Silver Lake near Channing,
Arnold, Northland, Ned Lake and Bone Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle. Persons in campgrounds should
consider seeking sturdy shelter until these storms pass.
&&
LAT...LON 4644 8855 4653 8805 4599 8724 4598 8736
4592 8736 4588 8746
TIME...MOT...LOC 1915Z 301DEG 13KT 4647 8823 4593 8741
RolfsonThe office that day
Everything else NWS Marquette, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 12:12 AM CDT | Special Weather Statement | MQT | Baraga | 48 min |
| Aug 21, 9:07 AM CDT | Marine Dense Fog Advisory | MQT | 10 hr | |
| Aug 21, 1:45 PM CDT | Special Weather Statement | MQT | Dickinson | 30 min |
| Aug 21, 2:16 PM CDT | Special Weather Statement | MQT | Dickinson | 14 min |
| Aug 21, 3:01 PM CDT | Severe Thunderstorm Warning | MQT | Dickinson, Iron | 44 min |
| Aug 21, 3:17 PM CDT | Areal Flood Advisory | MQT | Delta, Dickinson, Marquette, Menominee | 118 min |
| Aug 21, 3:24 PM CDT | Severe Thunderstorm Warning | MQT | Delta, Menominee | 51 min |
| Aug 21, 3:46 PM CDT | Severe Thunderstorm Warning | MQT | Dickinson | 44 min |
| Aug 21, 3:52 PM CDT | Severe Thunderstorm Warning | MQT | Delta, Menominee | 38 min |
| Aug 21, 4:04 PM CDT | Special Marine Warning | MQT | 86 min | |
| Aug 21, 4:30 PM CDT | Special Weather Statement | MQT | Menominee | 30 min |
| Aug 21, 4:32 PM CDT | Special Weather Statement | MQT | Dickinson | 28 min |
| Aug 21, 4:40 PM CDT | Severe Thunderstorm Warning | MQT | Dickinson | 35 min |
| Aug 21, 4:58 PM CDT | Special Weather Statement | MQT | Menominee | 47 min |
| Aug 21, 5:05 PM CDT | Severe Thunderstorm Warning | MQT | Menominee | 25 min |
| Aug 21, 5:17 PM CDT | Severe Thunderstorm Warning | MQT | Menominee | 25 min |
| Aug 21, 5:21 PM CDT | Special Marine Warning | MQT | 24 min | |
| Aug 21, 5:26 PM CDT | Severe Thunderstorm Warning | MQT | Iron | 34 min |
| Aug 21, 5:28 PM CDT | Special Marine Warning | MQT | 32 min | |
| Aug 21, 5:59 PM CDT | Special Marine Warning | MQT | 31 min | |
| Aug 21, 6:01 PM CDT | Special Weather Statement | MQT | Iron | 44 min |
| Aug 21, 6:08 PM CDT | Areal Flood Advisory | MQT | Houghton, Iron | 3 hr |
| Aug 21, 6:09 PM CDT | Severe Thunderstorm Warning | MQT | Iron | 24 min |
| Aug 21, 6:13 PM CDT | Special Weather Statement | MQT | Gogebic | 47 min |
| Aug 21, 6:24 PM CDT | Special Marine Warning | MQT | 36 min | |
| Aug 21, 6:51 PM CDT | Areal Flood Advisory | MQT | Gogebic, Ontonagon | 3 hr |
Nearby
Severe Thunderstorm Warnings in Michigan, 2020Every severe thunderstorm warning in 2020
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.