Alert archive / Michigan / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 86, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 21, 2010, 8:33 PM EDT for 7 counties in Michigan. It was in force for 57 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 21, 2010, 8:33 PM EDT (00:33 UTC)
- Expired
- Sep 21, 2010, 9:30 PM EDT
- In force
- 57 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Allegan County, MI, Barry County, MI, Kalamazoo County, MI, Kent County, MI, Muskegon County, MI, Ottawa County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 33 km from the middle of the area, began a volume at 00:32 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 21, 8:08 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
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 21, 8:00 PM EDT, 33 minutes earlier.
Area forecast discussion, Sep 21, 8:00 PM EDT, 33 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 625 AM EDT TUE SEP 21 2010 MIZ037>040-043>046-050>052-056>059-064>067-071>074-221000- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 625 AM EDT TUE SEP 21 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT A SLIGHT RISK OF SEVERE WEATHER EXISTS LATE THIS AFTERNOON AND TONIGHT. THE MAIN THREAT IS DAMAGING STRAIGHT LINE WINDS BUT LARGE HAIL IS ALSO POSSIBLE. LOCALLY HEAVY RAINFALL COULD CREATE URBAN AND SMALL STREAM FLOODING. THUNDERSTORMS ARE LIKELY AFTER 3 PM NORTH OF A MUSKEGON TO MOUNT PLEASANT LINE. THE STORMS WILL CONTINUE TO DEVELOP AND SPREAD SOUTH ACROSS THE REST OF THE AREA THROUGH THE LATE AFTERNOON AND EVENING HOURS. INDIVIDUAL STORM MOVEMENT WILL BE EAST AT 30 TO 50 MPH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A THUNDERSTORM CHANCE WILL LINGER WEDNESDAY AND WEDNESDAY NIGHT... AND NORTH OF GRAND RAPIDS ON THURSDAY. ANOTHER GOOD CHANCE OF STRONG THUNDERSTORMS EXISTS AREA WIDE LATE THURSDAY NIGHT INTO FRIDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED AFTER 3 PM THIS AFTERNOON NORTH OF GRAND RAPIDS.... AND AFTER 7 PM SOUTH OF GRAND RAPIDS. LMZ844>849-221000- 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- 625 AM EDT TUE SEP 21 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT SOUTH WINDS TO 35 KNOTS WILL CREATE A HAZARD TO SMALL CRAFT TODAY BEFORE DIMINISHING TONIGHT. A SLIGHT RISK OF SEVERE WEATHER EXISTS LATE THIS AFTERNOON AND TONIGHT. THE MAIN THREAT IS DAMAGING STRAIGHT LINE WINDS OF 60 MPH BUT LARGE HAIL IS ALSO POSSIBLE. THUNDERSTORMS ARE LIKELY AFTER 3 PM NORTH OF MUSKEGON. THE STORMS WILL CONTINUE TO DEVELOP AND SPREAD SOUTH ACROSS THE REST OF THE LAKE THROUGH THE LATE AFTERNOON AND EVENING HOURS. INDIVIDUAL STORM MOVEMENT WILL BE EAST AT 30 TO 50 MPH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY GALE FORCE WINDS ARE POSSIBLE THURSDAY AND FRIDAY. THE WINDS THURSDAY AND THURSDAY NIGHT WILL BE OUT OF THE SOUTH... SHIFTING TO THE WEST ON FRIDAY. A THUNDERSTORM CHANCE WILL LINGER WEDNESDAY AND WEDNESDAY NIGHT... AND NORTH OF MUSKEGON ON THURSDAY. ANOTHER GOOD CHANCE OF STRONG THUNDERSTORMS EXISTS AREA WIDE LATE THURSDAY NIGHT INTO FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED AFTER 3 PM THIS AFTERNOON NORTH OF HOLLAND... AND AFTER 7 PM SOUTH OF HOLLAND. MEADE
In the hours before
Local storm report, Sep 21, 7:50 PM EDT, 43 minutes before
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</html>Local storm report, Sep 21, 8:25 PM EDT, 8 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 |
|---|---|---|---|---|
| Sep 21, 8:05 PM EDT | Special Weather Statement | GRR | Allegan, Muskegon, Newaygo, Ottawa, Van Buren | 55 min |
| Sep 21, 8:17 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Muskegon, Newaygo, Oceana, Ottawa | 58 min |
| Sep 21, 8:22 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot, Isabella, Mecosta, Montcalm, Newaygo | 53 min |
| Sep 21, 9:03 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Clare, Clinton, Eaton, Ionia and 9 more | 72 min |
| Sep 21, 9:19 PM EDT | Areal Flood Advisory | GRR | Allegan, Clare, Gratiot, Ionia, Isabella, Kent and 9 more | 4 hr |
| Sep 21, 9:40 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Clare, Clinton, Eaton, Gratiot and 9 more | 65 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2010Every severe thunderstorm warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.