Alert archive / Michigan / Freeze Warnings in 2021
Freeze Warning 7, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this freeze warning at May 9, 2021, 3:46 PM EDT for 8 counties in Michigan. It took effect at May 10, 2021, 1:00 AM EDT. It was in force for 7 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 9, 2021, 3:46 PM EDT (19:46 UTC)
- In effect from
- May 10, 2021, 1:00 AM EDT
- Expired
- May 10, 2021, 8:19 AM EDT
- In force
- 7 hr
- Issued by
- NWS Grand Rapids, MI
Counties Clare County, MI, Isabella County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 101 km from the middle of the area, began a volume at 19:44 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 12:00Z, 7.8 hours before the alert went out and 212 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
- 2 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1182 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
756 WWUS73 KGRR 091946 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 346 PM EDT Sun May 9 2021 MIZ037>040-043>046-100400- /O.NEW.KGRR.FZ.W.0007.210510T0500Z-210510T1300Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 346 PM EDT Sun May 9 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of central and west central Michigan. * WHEN...From 1 AM to 9 AM EDT Monday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Temperatures will fall to near and below freezing across Central Lower Michigan tonight. Coldest readings will be found in low lying areas as there will still be a bit of wind aloft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MIZ050>052-056>059-064>067-071>074-100400- /O.NEW.KGRR.FR.Y.0004.210510T0500Z-210510T1300Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 346 PM EDT Sun May 9 2021 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...From 1 AM to 9 AM EDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Temperatures will fall into the lower to middle 30s tonight for areas in the Frost Advisory. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
3 follow-up statements
755 WWUS73 KGRR 100115 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 915 PM EDT Sun May 9 2021 MIZ037>040-043>046-100915- /O.CON.KGRR.FZ.W.0007.210510T0500Z-210510T1300Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 915 PM EDT Sun May 9 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of central and west central Michigan. * WHEN...From 1 AM to 9 AM EDT Monday. * IMPACTS...Freezing conditions could kill crops and other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MIZ050>052-056>059-064>067-071>074-100915- /O.CON.KGRR.FR.Y.0004.210510T0500Z-210510T1300Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 915 PM EDT Sun May 9 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...From 1 AM to 9 AM EDT Monday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
155 WWUS73 KGRR 101003 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 603 AM EDT Mon May 10 2021 MIZ037>040-043>046-101300- /O.CON.KGRR.FZ.W.0007.000000T0000Z-210510T1300Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 603 AM EDT Mon May 10 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...Portions of central and west central Michigan. * WHEN...Until 9 AM EDT this morning. * 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. && $$ MIZ050>052-056>059-064>067-071>074-101300- /O.CON.KGRR.FR.Y.0004.000000T0000Z-210510T1300Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 603 AM EDT Mon May 10 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
461 WWUS73 KGRR 101219 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 819 AM EDT Mon May 10 2021 MIZ037>040-043>046-101330- /O.CAN.KGRR.FZ.W.0007.000000T0000Z-210510T1300Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 819 AM EDT Mon May 10 2021 ...FREEZE WARNING IS CANCELLED... Temperatures have warmed up sufficiently so that freezing conditions have ended. $$ MIZ050>052-056>059-064>067-071>074-101330- /O.CAN.KGRR.FR.Y.0004.000000T0000Z-210510T1300Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 819 AM EDT Mon May 10 2021 ...FROST ADVISORY IS CANCELLED... Temperatures have warmed up sufficiently so that frost conditions have ended. $$ 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 9, 11:02 AM EDT | Small Craft Advisory | GRR | 19 hr | |
| May 9, 3:46 PM EDT | Frost Advisory | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 9 more | 17 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.