Alert archive / Michigan / Freeze Warnings in 2021
Freeze Warning 1, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this freeze warning at Apr 17, 2021, 11:03 AM EDT for 4 counties in Michigan. It took effect at Apr 18, 2021, 2:00 AM EDT. It was in force for 6 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
- Apr 17, 2021, 11:03 AM EDT (15:03 UTC)
- In effect from
- Apr 18, 2021, 2:00 AM EDT
- Expired
- Apr 18, 2021, 8:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Grand Rapids, MI
Counties Lake County, MI, Mason County, MI, Newaygo County, MI, Oceana County, MI
The radar
The Grand Rapids radar (KGRR), 109 km from the middle of the area, began a volume at 15:06 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, 3.1 hours before the alert went out and 178 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
- 2043 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
136 WWUS73 KGRR 171503 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 1103 AM EDT Sat Apr 17 2021 MIZ037-038-043-044-172315- /O.NEW.KGRR.FZ.W.0001.210418T0600Z-210418T1200Z/ Mason-Lake-Oceana-Newaygo- Including the cities of Ludington, Baldwin, Hart, and Fremont 1103 AM EDT Sat Apr 17 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures in the mid to upper 20s expected. * WHERE...Mason, Lake, Oceana and Newaygo counties. * WHEN...From 2 AM to 8 AM EDT Sunday. * IMPACTS...Damage may occur to budding fruit trees and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps to protect tender vegetation from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
3 follow-up statements
825 WWUS73 KGRR 171943 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 343 PM EDT Sat Apr 17 2021 MIZ037-038-043-044-180345- /O.CON.KGRR.FZ.W.0001.210418T0600Z-210418T1200Z/ Mason-Lake-Oceana-Newaygo- Including the cities of Ludington, Baldwin, Hart, and Fremont 343 PM EDT Sat Apr 17 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures in the mid to upper 20s expected. * WHERE...Mason, Oceana, Newaygo and Lake counties. * WHEN...From 2 AM to 8 AM EDT Sunday. * IMPACTS...Damage may occur to budding fruit trees and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps to protect sensitive vegetation from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
794 WWUS73 KGRR 180315 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 1115 PM EDT Sat Apr 17 2021 MIZ037-038-043-044-181115- /O.CON.KGRR.FZ.W.0001.210418T0600Z-210418T1200Z/ Mason-Lake-Oceana-Newaygo- Including the cities of Ludington, Baldwin, Hart, and Fremont 1115 PM EDT Sat Apr 17 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures in the mid to upper 20s. * WHERE...Mason, Oceana, Newaygo and Lake counties. * WHEN...Until 8 AM EDT Sunday. * 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. && $$ For more information from the National Weather Service visit https://weather.gov/grr
988 WWUS73 KGRR 180819 NPWGRR URGENT - WEATHER MESSAGE National Weather Service Grand Rapids MI 419 AM EDT Sun Apr 18 2021 MIZ037-038-043-044-181200- /O.CON.KGRR.FZ.W.0001.000000T0000Z-210418T1200Z/ Mason-Lake-Oceana-Newaygo- Including the cities of Ludington, Baldwin, Hart, and Fremont 419 AM EDT Sun Apr 18 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures from the mid 20s to near 30. * WHERE...Mason, Oceana, Newaygo and Lake counties. * WHEN...Until 8 AM EDT Sunday. * IMPACTS...Frost and freezing temperatures may kill or damage sensitive vegetation, and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Warmer temperatures are expected Sunday night, before nighttime temperatures again fall near or below freezing Monday night through Wednesday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/grr
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.