Alert archive / Michigan / Special Weather Statements in 2021
Special Weather Statement, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this special weather statement at Jun 29, 2021, 2:53 AM EDT for Calhoun County, Jackson County, Michigan. It was in force for 97 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2021, 2:53 AM EDT (06:53 UTC)
- Expired
- Jun 29, 2021, 4:30 AM EDT
- In force
- 97 min
- Issued by
- NWS Grand Rapids, MI
Counties Calhoun County, MI, Jackson County, MI
The radar
The Detroit radar (KDTX), 109 km from the middle of the area, began a volume at 06:54 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, 6.9 hours before the alert went out and 113 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
- 1363 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 883 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
- 63 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jun 29, 1:30 AM EDT, 1 hour 23 minutes earlier.
Area forecast discussion, Jun 29, 1:30 AM EDT, 1 hour 23 minutes before
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</html>Hazardous weather outlook, Jun 28, 1:17 PM EDT, 13 hours 36 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 117 PM EDT Mon Jun 28 2021 MIZ037>040-043>046-050>052-056>059-064>067-071>074-290845- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 117 PM EDT Mon Jun 28 2021 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This Afternoon and Tonight Scattered thunderstorms are expected this afternoon and evening between roughly 200pm and 1000pm. All storms today will contain locally heavy rain and lightning, with the strongest storms capable of producing damaging wind gusts and small hail. The possibility of flooding exists where any rainfall occurs today given the saturated soils. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday A chance of severe thunderstorms exists Tuesday afternoon and evening as well. Damaging winds are the primary severe hazard. Where the storms persist...excessive rain will be possible...which could lead to an increase/return of the small stream and urban flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. LMZ844>849-290845- 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- 117 PM EDT Mon Jun 28 2021 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This Afternoon and Tonight Isolated thunderstorms with gusty winds will be possible. Patchy dense fog could occur as well early. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Thunderstorms will be possible into Tuesday night. Cloud to water lightning strikes and gusty winds are the main forecasted hazard. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
In the hours before
Local storm report, Jun 28, 9:46 PM EDT, 5 hours 7 minutes before
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</html>Special weather statement, Jun 29, 2:53 AM EDT, 0 minutes 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 |
|---|---|---|---|---|
| Jun 29, 9:43 AM EDT | River Flood Warning | GRR | Barry | 48 hr |
| Jun 29, 11:37 AM EDT | Special Weather Statement | GRR | Calhoun, Eaton, Ingham, Jackson | 83 min |
| Jun 29, 1:19 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 41 min |
Nearby
Special Weather Statements in Michigan, 2021Every special weather statement in 2021
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.