Alert archive / Michigan / Frost Advisories in 2021
Frost Advisory 5, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this frost advisory at May 12, 2021, 1:38 PM EDT for 15 counties in Michigan. It took effect at May 13, 2021, 12:00 AM EDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 12, 2021, 1:38 PM EDT (17:38 UTC)
- In effect from
- May 13, 2021, 12:00 AM EDT
- Expired
- May 13, 2021, 8:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS Grand Rapids, MI
Counties Allegan County, MI, Barry County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Montcalm County, MI, Muskegon County, MI, Ottawa County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 28 km from the middle of the area, began a volume at 17:37 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, 5.6 hours before the alert went out and 150 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
- 1520 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
415 WWUS73 KGRR 121738 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 138 PM EDT Wed May 12 2021 MIZ037>040-043>046-130145- /O.NEW.KGRR.FZ.W.0010.210513T0400Z-210513T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 138 PM EDT Wed May 12 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures of 25 to 30 expected. * WHERE...Portions of central and west central Michigan. * WHEN...From midnight tonight to 8 AM EDT Thursday. * IMPACTS...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. && $$ MIZ050>052-056>059-064>067-071>074-130145- /O.NEW.KGRR.FR.Y.0005.210513T0400Z-210513T1200Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 138 PM EDT Wed May 12 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT THURSDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...From midnight tonight to 8 AM EDT Thursday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
4 follow-up statements
140 WWUS73 KGRR 121949 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 349 PM EDT Wed May 12 2021 MIZ037>040-043>046-130400- /O.CON.KGRR.FZ.W.0010.210513T0400Z-210513T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 349 PM EDT Wed May 12 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures of 25 to 30 expected. * WHERE...Portions of central and west central Michigan. * WHEN...From midnight tonight to 8 AM EDT Thursday. * IMPACTS...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. && $$ MIZ050>052-056>059-064>067-071>074-130400- /O.CON.KGRR.FR.Y.0005.210513T0400Z-210513T1200Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 349 PM EDT Wed May 12 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT THURSDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...From midnight tonight to 8 AM EDT Thursday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
012 WWUS73 KGRR 130157 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 957 PM EDT Wed May 12 2021 MIZ037>040-043>046-131000- /O.CON.KGRR.FZ.W.0010.210513T0400Z-210513T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 957 PM EDT Wed May 12 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of central and west central Michigan. * WHEN...Until 8 AM EDT Thursday. * IMPACTS...Freezing temperatures 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. && $$ MIZ050>052-056>059-064>067-071>074-131000- /O.CON.KGRR.FR.Y.0005.210513T0400Z-210513T1200Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 957 PM EDT Wed May 12 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THURSDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...Until 8 AM EDT Thursday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
859 WWUS73 KGRR 130746 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 346 AM EDT Thu May 13 2021 MIZ037>040-043>046-131200- /O.CON.KGRR.FZ.W.0010.000000T0000Z-210513T1200Z/ 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 AM EDT Thu May 13 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28 degrees. * WHERE...Portions of central and west central Michigan. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Freezing temperatures 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. && $$ MIZ050>052-056>059-064>067-071>074-131200- /O.CON.KGRR.FR.Y.0005.000000T0000Z-210513T1200Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 346 AM EDT Thu May 13 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, south central, southwest and west central Michigan. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
083 WWUS73 KGRR 131203 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 803 AM EDT Thu May 13 2021 MIZ037>040-043>046-131315- /O.EXP.KGRR.FZ.W.0010.000000T0000Z-210513T1200Z/ Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella- Including the cities of Ludington, Baldwin, Reed City, Clare, Hart, Fremont, Big Rapids, and Mount Pleasant 803 AM EDT Thu May 13 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING... The freeze warning will be allowed to expire at 8 AM this morning. Portions of the area may need a frost advisory tonight. $$ MIZ050>052-056>059-064>067-071>074-131315- /O.EXP.KGRR.FR.Y.0005.000000T0000Z-210513T1200Z/ Muskegon-Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry- Eaton-Ingham-Van Buren-Kalamazoo-Calhoun-Jackson- Including the cities of Muskegon, Greenville, Alma, Grand Haven, Jenison, Grand Rapids, Ionia, St. Johns, Holland, Hastings, Charlotte, Lansing, South Haven, Kalamazoo, Battle Creek, and Jackson 803 AM EDT Thu May 13 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... The frost advisory will be allowed to expire at 8 AM this morning. Portions of the area may need a frost advisory tonight. $$ 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 12, 1:38 PM EDT | Freeze Warning | GRR | Clare, Isabella, Lake, Mason, Mecosta, Newaygo and 2 more | 18 hr |
Nearby
Frost Advisories in Michigan, 2021Every frost advisory 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.