Alert archive / Michigan / Frost Advisories in 2021
Frost Advisory 7, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this frost advisory at May 26, 2021, 3:16 PM EDT for 6 counties in Michigan. It took effect at May 27, 2021, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 26, 2021, 3:16 PM EDT (19:16 UTC)
- In effect from
- May 27, 2021, 2:00 AM EDT
- Expired
- May 27, 2021, 7:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS Grand Rapids, MI
Counties Clare County, MI, Isabella County, MI, Lake County, MI, Mecosta County, MI, Newaygo County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 102 km from the middle of the area, began a volume at 19:17 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, 7.3 hours before the alert went out and 195 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
- 118 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 561 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
625 WWUS73 KGRR 261916 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 316 PM EDT Wed May 26 2021 MIZ038>040-044>046-270330- /O.NEW.KGRR.FR.Y.0007.210527T0600Z-210527T1200Z/ Lake-Osceola-Clare-Newaygo-Mecosta-Isabella- Including the cities of Baldwin, Reed City, Clare, Fremont, Big Rapids, and Mount Pleasant 316 PM EDT Wed May 26 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT THURSDAY... * WHAT...Temperatures falling into the lower to mid 30s will result in frost formation. * WHERE...Lake, Osceola, Clare, Newaygo, Mecosta and Isabella counties. * WHEN...From 2 AM to 8 AM EDT Thursday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Some low spots and protected areas from the wind may even get below freezing for an hour or so toward sunrise Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
3 follow-up statements
208 WWUS73 KGRR 270242 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 1042 PM EDT Wed May 26 2021 MIZ038>040-044>046-271045- /O.CON.KGRR.FR.Y.0007.210527T0600Z-210527T1200Z/ Lake-Osceola-Clare-Newaygo-Mecosta-Isabella- Including the cities of Baldwin, Reed City, Clare, Fremont, Big Rapids, and Mount Pleasant 1042 PM EDT Wed May 26 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT THURSDAY... * WHAT...Temperatures in the middle 30s will result in frost formation. * WHERE...Osceola, Lake, Clare, Isabella, Newaygo and Mecosta counties. * WHEN...From 2 AM to 8 AM EDT Thursday. * IMPACTS...Temperatures near freezing could harm plants and other sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Some low spots and protected areas from the wind may even get below freezing for an hour or so toward sunrise Thursday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
647 WWUS73 KGRR 270723 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 323 AM EDT Thu May 27 2021 MIZ038>040-044>046-271200- /O.CON.KGRR.FR.Y.0007.000000T0000Z-210527T1200Z/ Lake-Osceola-Clare-Newaygo-Mecosta-Isabella- Including the cities of Baldwin, Reed City, Clare, Fremont, Big Rapids, and Mount Pleasant 323 AM EDT Thu May 27 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures in the middle 30s will result in frost formation. * WHERE...Osceola, Lake, Clare, Isabella, Newaygo and Mecosta counties. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Cold temperatures will harm plants and other sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
964 WWUS73 KGRR 271145 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 745 AM EDT Thu May 27 2021 MIZ038>040-044>046-271245- /O.CAN.KGRR.FR.Y.0007.000000T0000Z-210527T1200Z/ Lake-Osceola-Clare-Newaygo-Mecosta-Isabella- Including the cities of Baldwin, Reed City, Clare, Fremont, Big Rapids, and Mount Pleasant 745 AM EDT Thu May 27 2021 ...FROST ADVISORY IS CANCELLED... Temperatures are rising and no further damage is expected to tender vegetation. $$ 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 26, 3:31 AM EDT | Special Weather Statement | GRR | Allegan, Barry, Clinton, Gratiot, Ionia, Kalamazoo and 3 more | 89 min |
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.