Alert archive / Michigan / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 61, NWS Grand Rapids, MI

September 3, 2019Clare County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 3, 2019, 8:08 PM EDT for Clare County, Michigan. It was in force for 37 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 3, 2019, 8:08 PM EDT (00:08 UTC)
Expired: Sep 3, 2019, 8:45 PM EDT
In force: 37 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Clare County, MI

The radar

The NCL Michigan radar (KAPX), 103 km from the middle of the area, began a volume at 00:08 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

Detroit, MI (KDTX), launched 00:00Z, 0.1 hours before the alert went out and 182 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: 435 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 337 m²/s²
0-3 km storm-relative helicity: 331 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

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 Grand Rapids, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 3, 7:53 PM EDT, 15 minutes earlier.

Area forecast discussion, Sep 3, 7:53 PM EDT, 15 minutes before

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Hazardous weather outlook, Sep 3, 5:05 PM EDT, 3 hours 3 minutes before

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In the hours before

Local storm report, Sep 3, 3:31 PM EDT, 4 hours 37 minutes before

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Local storm report, Sep 3, 5:08 PM EDT, 3 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
508 PM EDT TUE SEP 3 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0425 PM     NON-TSTM WND GST 2 SSW CASCADE           42.88N 85.52W
09/03/2019  M48 MPH          KENT               MI   ASOS

            ASOS STATION KGRR GERALD R FORD INTL.

&&

MWS

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 3, 8:36 PM EDT	Small Craft Advisory	GRR		19 hr
Sep 3, 8:40 PM EDT	Special Marine Warning	GRR		65 min
Sep 3, 9:33 PM EDT	Special Marine Warning	GRR		22 min
Sep 3, 9:43 PM EDT	Special Marine Warning	GRR		47 min
Sep 3, 10:08 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	67 min
Sep 3, 10:59 PM EDT	Severe Thunderstorm Warning	GRR	Eaton, Ingham	7 min
Sep 4, 3:46 AM EDT	Lakeshore Flood Advisory	GRR	Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren	12 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2019 Every severe thunderstorm warning in 2019

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.