Alert archive / Michigan / Freeze Warnings in 2021
Freeze Warning 4, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this freeze warning at May 6, 2021, 3:42 PM EDT for 4 counties in Michigan. It took effect at May 7, 2021, 12:00 AM EDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 6, 2021, 3:42 PM EDT (19:42 UTC)
- In effect from
- May 7, 2021, 12:00 AM EDT
- Expired
- May 7, 2021, 8:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS Grand Rapids, MI
Counties Clare County, MI, Isabella County, MI, Mecosta County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 109 km from the middle of the area, began a volume at 19:42 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, 7.7 hours before the alert went out and 252 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
- 1490 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -81 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
373 WWUS73 KGRR 061942 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 342 PM EDT Thu May 6 2021 MIZ039-040-045-046-070345- /O.NEW.KGRR.FZ.W.0004.210507T0400Z-210507T1200Z/ Osceola-Clare-Mecosta-Isabella- Including the cities of Reed City, Clare, Big Rapids, and Mount Pleasant 342 PM EDT Thu May 6 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT FRIDAY... * WHAT...Temperatures near to slightly below the freezing mark of 32 degrees are expected tonight. * WHERE...Osceola, Clare, Mecosta and Isabella counties. * WHEN...From midnight tonight to 8 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Freezing temperatures are possible between midnight and 800am. Cloud cover may mitigate the threat a bit, but there is still a chance of readings dropping below 32 degrees. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MIZ037-038-043-044-051-052-070345- /O.NEW.KGRR.FR.Y.0001.210507T0400Z-210507T1200Z/ Mason-Lake-Oceana-Newaygo-Montcalm-Gratiot- Including the cities of Ludington, Baldwin, Hart, Fremont, Greenville, and Alma 342 PM EDT Thu May 6 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT FRIDAY... * WHAT...Temperatures in the lower to middle 30s will result in frost formation. * WHERE...Mason, Lake, Oceana, Newaygo, Montcalm and Gratiot counties. * WHEN...From midnight tonight to 8 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Temperatures will fall into the lower to middle 30s overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr Duke
4 follow-up statements
395 WWUS73 KGRR 070137 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 937 PM EDT Thu May 6 2021 MIZ039-040-045-046-070945- /O.CON.KGRR.FZ.W.0004.210507T0400Z-210507T1200Z/ Osceola-Clare-Mecosta-Isabella- Including the cities of Reed City, Clare, Big Rapids, and Mount Pleasant 937 PM EDT Thu May 6 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT FRIDAY... * WHAT...Temperatures near to slightly below 32 degrees are expected tonight. * WHERE...Osceola, Clare, Isabella and Mecosta counties. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MIZ037-038-043-044-051-052-070945- /O.CON.KGRR.FR.Y.0001.210507T0400Z-210507T1200Z/ Mason-Lake-Oceana-Newaygo-Montcalm-Gratiot- Including the cities of Ludington, Baldwin, Hart, Fremont, Greenville, and Alma 937 PM EDT Thu May 6 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT FRIDAY... * WHAT...Temperatures in the lower to middle 30s will result in frost formation. * WHERE...Lake, Mason, Oceana, Gratiot, Newaygo and Montcalm counties. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
968 WWUS73 KGRR 070803 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 403 AM EDT Fri May 7 2021 MIZ039-040-045-046-071200- /O.CON.KGRR.FZ.W.0004.000000T0000Z-210507T1200Z/ Osceola-Clare-Mecosta-Isabella- Including the cities of Reed City, Clare, Big Rapids, and Mount Pleasant 403 AM EDT Fri May 7 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures near to slightly below freezing. * WHERE...Osceola, Clare, Isabella and Mecosta counties. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost or fog may also deposit ice on pavement or other walkways. * ADDITIONAL DETAILS...Another round of freezing temperatures and frost is likely to occur Friday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MIZ037-038-043-044-051-052-071200- /O.CON.KGRR.FR.Y.0001.000000T0000Z-210507T1200Z/ Mason-Lake-Oceana-Newaygo-Montcalm-Gratiot- Including the cities of Ludington, Baldwin, Hart, Fremont, Greenville, and Alma 403 AM EDT Fri May 7 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures in the lower to middle 30s will result in areas of frost. * WHERE...Lake, Mason, Oceana, Gratiot, Newaygo and Montcalm counties. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. Frost may also deposit ice on sidewalks and other walkways. * ADDITIONAL DETAILS...Freezing temperatures and frost are likely to occur Friday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
108 WWUS73 KGRR 070958 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 558 AM EDT Fri May 7 2021 MIZ039-040-045-046-071200- /O.CON.KGRR.FZ.W.0004.000000T0000Z-210507T1200Z/ Osceola-Clare-Mecosta-Isabella- Including the cities of Reed City, Clare, Big Rapids, and Mount Pleasant 558 AM EDT Fri May 7 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures near to slightly below freezing. Very low visibilities as well. * WHERE...Osceola, Clare, Isabella and Mecosta counties. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost or fog may also deposit ice on pavement or other walkways. Very low visibilities will lead to areas of dangerous travel conditions. * ADDITIONAL DETAILS...Another round of freezing temperatures and frost is likely to occur Friday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Be alert for sudden changes to the visibility. && $$ MIZ050-056>059-064>067-071>074-071300- /O.NEW.KGRR.FG.Y.0001.210507T0958Z-210507T1300Z/ Muskegon-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-Ingham- Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 558 AM EDT Fri May 7 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Areas of visibility less than a quarter mile in dense fog. * WHERE...Portions of south central, southwest and west central Michigan. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Near zero visibility is possible in places for the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ MIZ037-038-043-044-051-052-071200- /O.CON.KGRR.FR.Y.0001.000000T0000Z-210507T1200Z/ Mason-Lake-Oceana-Newaygo-Montcalm-Gratiot- Including the cities of Ludington, Baldwin, Hart, Fremont, Greenville, and Alma 558 AM EDT Fri May 7 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures in the lower to middle 30s will result in areas of frost. Near zero visibilities in places. * WHERE...Lake, Mason, Oceana, Gratiot, Newaygo and Montcalm counties. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. Frost may also deposit ice on sidewalks and other walkways. * ADDITIONAL DETAILS...Freezing temperatures and frost are likely to occur Friday night. Areas of visibility less than a quarter mile in dense fog. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Be alert for sudden changes to the visibility. && $$ For more information from the National Weather Service visit https://weather.gov/grr
769 WWUS73 KGRR 071155 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 755 AM EDT Fri May 7 2021 MIZ039-040-045-046-071300- /O.EXP.KGRR.FZ.W.0004.000000T0000Z-210507T1200Z/ Osceola-Clare-Mecosta-Isabella- Including the cities of Reed City, Clare, Big Rapids, and Mount Pleasant 755 AM EDT Fri May 7 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING... As the temperature rises through the morning the fog will dissipate. Be alert for sudden changes until the dense fog dissipates by 9 am. $$ MIZ037-038-043-044-051-052-071300- /O.EXP.KGRR.FR.Y.0001.000000T0000Z-210507T1200Z/ Mason-Lake-Oceana-Newaygo-Montcalm-Gratiot- Including the cities of Ludington, Baldwin, Hart, Fremont, Greenville, and Alma 755 AM EDT Fri May 7 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... As the temperature rises through the morning the fog will dissipate. Be alert for sudden changes until the dense fog dissipates by 9 am. $$ MIZ050-056>059-064>067-071>074-071300- /O.CON.KGRR.FG.Y.0001.000000T0000Z-210507T1300Z/ Muskegon-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-Ingham- Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 755 AM EDT Fri May 7 2021 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Areas of visibility less than a quarter mile in dense fog. * WHERE...Portions of south central, southwest and west central Michigan. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Near zero visibility is possible in places for the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ For more information from the National Weather Service visit https://weather.gov/grr
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 3:42 PM EDT | Frost Advisory | GRR | Gratiot, Lake, Mason, Montcalm, Newaygo, Oceana | 16 hr |
Nearby
Freeze Warnings in Michigan, 2021Every freeze warning 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.