Alert archive / Michigan / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 57, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 29, 2019, 7:16 PM EDT for Kent County, Montcalm County, Michigan. It was in force for 44 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 29, 2019, 7:16 PM EDT (23:16 UTC)
- Expired
- Aug 29, 2019, 8:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, MI, Montcalm County, MI
The radar
The Grand Rapids radar (KGRR), 35 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 264 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1222 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 200 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 Grand Rapids, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 29, 6:36 PM EDT, 40 minutes earlier.
Area forecast discussion, Aug 29, 6:36 PM EDT, 40 minutes before
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</html>Hazardous weather outlook, Aug 29, 3:03 PM EDT, 4 hours 13 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 303 PM EDT Thu Aug 29 2019 MIZ037>040-043>046-050>052-056>059-064>067-071>074-301915- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 303 PM EDT Thu Aug 29 2019 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This Afternoon and Tonight There is a marginal risk of severe storms through this evening. The main threat is strong downburst winds. THere is also the possibility of a tornado. Lakeshore flooding and hazardous swim conditions are expected into this evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening. LMZ844>849-301915- St Joseph to South Haven MI-South Haven to Holland MI- Holland to Grand Haven MI-Grand Haven to Whitehall MI- Whitehall to Pentwater MI-Pentwater to Manistee MI- 303 PM EDT Thu Aug 29 2019 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This Afternoon and Tonight Winds and waves will be hazardous to small craft through early evening. There is also a threat of strong thunderstorms with winds gusting over 40 knots through early evening. .DAYS TWO THROUGH SEVEN...Friday through Wednesday No hazardous weather is expected at this time.
In the hours before
Special weather statement, Aug 29, 4:56 PM EDT, 2 hours 20 minutes before
Special Weather Statement
National Weather Service Grand Rapids MI
456 PM EDT Thu Aug 29 2019
MIZ043-044-050-292200-
Oceana-Muskegon-Newaygo-
456 PM EDT Thu Aug 29 2019
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NEWAYGO...MUSKEGON AND
OCEANA COUNTIES...
At 455 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms located along a line extending from 7 miles
southwest of Silver Lake State Park to 30 miles west of Whitehall.
Movement was east at 50 mph.
Winds in excess of 40 mph and penny size hail are possible with
these storms. Winds could knock down tree limbs and create scattered
power outages.
Frequent cloud to ground lightning is occurring. Lightning can
strike 10 miles away from a thunderstorm. Seek a safe shelter inside
a building or vehicle.
LAT...LON 4366 8654 4375 8646 4382 8643 4382 8557
4330 8556 4329 8579 4320 8579 4321 8591
4312 8591 4312 8627 4332 8640 4350 8647
4362 8654
TIME...MOT...LOC 2052Z 277DEG 43KT 4362 8664 4344 8709
CASLocal storm report, Aug 29, 6:05 PM EDT, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
605 PM EDT THU AUG 29 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0544 PM HAIL 1 NNE MONTAGUE 43.42N 86.36W
08/29/2019 E0.70 INCH MUSKEGON MI TRAINED SPOTTER
TIME ESTIMATED FROM SPOTTER AND RADAR.
&&
NJJLocal storm report, Aug 29, 6:44 PM EDT, 32 minutes before
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</html>Local storm report, Aug 29, 6:45 PM EDT, 31 minutes before
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</html>Local storm report, Aug 29, 6:49 PM EDT, 27 minutes before
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</html>Local storm report, Aug 29, 7:15 PM EDT, 1 minute before
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</html>The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 4:16 PM EDT | Special Marine Warning | GRR | 89 min | |
| Aug 29, 4:56 PM EDT | Special Weather Statement | GRR | Muskegon, Newaygo, Oceana | 64 min |
| Aug 29, 5:14 PM EDT | Special Marine Warning | GRR | 46 min | |
| Aug 29, 5:50 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Newaygo | 25 min |
| Aug 29, 6:30 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm, Muskegon, Newaygo | 45 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2019Every 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.