Alert archive / Michigan / Special Weather Statements in 2018
Special Weather Statement, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this special weather statement at Aug 1, 2018, 8:38 PM EDT for Mason County, Michigan. It was in force for 67 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
- Aug 1, 2018, 8:38 PM EDT (00:38 UTC)
- Expired
- Aug 1, 2018, 9:45 PM EDT
- In force
- 67 min
- Issued by
- NWS Grand Rapids, MI
County Mason County, MI
The radar
The Grand Rapids radar (KGRR), 144 km from the middle of the area, began a volume at 00:41 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 00:00Z, 0.6 hours before the alert went out and 149 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
- 59 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1178 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Aug 1, 7:50 PM EDT, 48 minutes earlier.
Area forecast discussion, Aug 1, 7:50 PM EDT, 48 minutes before
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</html>Hazardous weather outlook, Aug 1, 2:41 PM EDT, 5 hours 57 minutes before
Hazardous Weather Outlook National Weather Service Grand Rapids MI 241 PM EDT Wed Aug 1 2018 MIZ037>040-043>046-050>052-056>059-064>067-071>074-020815- Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon- Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton- Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- 241 PM EDT Wed Aug 1 2018 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This Afternoon and Tonight A few thunderstorms will develop this afternoon east of Highway 131. Other storms are possible after midnight tonight around Ludington and Pentwater. No severe weather is expected today and tonight, but locally gusty winds and small hail could occur. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Widely scattered thunderstorms are expected Thursday but severe weather is not expected. After a mostly dry weekend, periodic thunderstorm chances will exist next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed. LMZ844>849-020815- 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- 241 PM EDT Wed Aug 1 2018 This hazardous weather outlook is for portions of southwest Lower Michigan. .DAY ONE...This Afternoon and Tonight Thunderstorms are possible tonight north of Muskegon. Severe weather is not expected at this time. Cloud to water lightning strikes and gusty winds are the main forecasted hazards. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday A period of hazardous winds and waves is possible Thursday morning into mid afternoon, particularly between Holland and Whitehall. After a mostly dry weekend, periodic thunderstorm chances will exist next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
In the hours before
Special weather statement, Aug 1, 4:23 PM EDT, 4 hours 15 minutes before
Special Weather Statement
National Weather Service Grand Rapids MI
423 PM EDT WED AUG 1 2018
MIZ045-012130-
Mecosta MI-
423 PM EDT WED AUG 1 2018
...SIGNIFICANT WEATHER ADVISORY...
At 423 PM EDT, Doppler radar was tracking a strong thunderstorm near
Stanwood, or 8 miles southeast of Big Rapids, moving east at 25 mph.
Dime size hail and winds in excess of 40 mph with downed tree limbs
will be possible with this storm.
Locations impacted include...
Big Rapids... Mecosta... Canadian Lakes...
Stanwood... Sylvester... Rodney...
Altona...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4373 8509 4347 8508 4347 8516 4352 8553
4368 8552
TIME...MOT...LOC 2023Z 273DEG 23KT 4359 8541
LAURENSSpecial weather statement, Aug 1, 6:21 PM EDT, 2 hours 17 minutes before
Special Weather Statement National Weather Service Grand Rapids MI 621 PM EDT WED AUG 1 2018 MIZ038-044-012245- Lake MI-Newaygo MI- 621 PM EDT WED AUG 1 2018 ...SIGNIFICANT WEATHER ADVISORY... At 620 PM EDT, Doppler radar was tracking a strong thunderstorm near Hawkins, or 10 miles northwest of Big Rapids, moving east at 15 mph. Dime size hail and winds in excess of 40 mph with downed tree limbs will be possible with this storm. Locations impacted include... Hawkins... LAT...LON 4371 8557 4373 8576 4385 8575 4390 8557 TIME...MOT...LOC 2220Z 272DEG 15KT 4378 8566 LAURENS
Special weather statement, Aug 1, 7:14 PM EDT, 1 hour 24 minutes before
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</html>Local storm report, Aug 1, 7:29 PM EDT, 1 hour 9 minutes before
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</html>Special weather statement, Aug 1, 7:31 PM EDT, 1 hour 7 minutes before
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</html>Special weather statement, Aug 1, 8:38 PM 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 |
|---|---|---|---|---|
| Aug 1, 8:36 PM EDT | Special Marine Warning | GRR | 40 min | |
| Aug 2, 9:21 AM EDT | Special Weather Statement | GRR | Clare | 39 min |
| Aug 2, 10:00 AM EDT | Special Weather Statement | GRR | Clare | 30 min |
| Aug 2, 1:42 PM EDT | Special Weather Statement | GRR | Clare, Isabella, Mecosta | 63 min |
| Aug 2, 1:51 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella | 36 min |
| Aug 2, 4:39 PM EDT | Special Weather Statement | GRR | Barry, Clinton, Eaton, Gratiot, Ionia, Kalamazoo and 2 more | 3 hr |
| Aug 2, 5:26 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 31 min |
| Aug 2, 5:39 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia | 37 min |
| Aug 2, 6:02 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 20 min |
| Aug 2, 7:30 PM EDT | Special Weather Statement | GRR | Barry, Ionia | 60 min |
| Aug 2, 7:59 PM EDT | Special Weather Statement | GRR | Clinton, Gratiot, Ionia | 61 min |
Nearby
Special Weather Statements in Michigan, 2018Every special weather statement in 2018
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.