Alert archive / Michigan / Freeze Warnings in 2021

Freeze Warning 1, NWS Gaylord, MI

April 17, 20216 counties in Michigan

NWS Gaylord, MI issued this freeze warning at Apr 17, 2021, 3:18 AM EDT for 6 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, 3:18 AM EDT (07:18 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 Gaylord, MI

Counties Antrim County, MI, Benzie County, MI, Charlevoix County, MI, Grand Traverse County, MI, Leelanau County, MI, Manistee County, MI

The radar

The NCL Michigan radar (KAPX), 81 km from the middle of the area, began a volume at 07:22 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 00:00Z, 7.3 hours before the alert went out and 191 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.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2021-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2021-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1686 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

201 
WWUS73 KAPX 170718
NPWAPX

URGENT - WEATHER MESSAGE
National Weather Service Gaylord MI
318 AM EDT Sat Apr 17 2021

MIZ020-021-025-026-031-099-171530-
/O.NEW.KAPX.FZ.W.0001.210418T0600Z-210418T1200Z/
Leelanau-Antrim-Benzie-Grand Traverse-Manistee-Charlevoix-
Including the cities of Northport, Mancelona, Frankfort, 
Traverse City, Manistee, and Charlevoix
318 AM EDT Sat Apr 17 2021

...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY...

* WHAT...Sub-freezing temperatures of 28 to 32 degrees expected
  tonight. 

* WHERE...Leelanau, Antrim, Benzie, Grand Traverse, Manistee and 
  Charlevoix Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions may kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$
4 follow-up statements
600 
WWUS73 KAPX 171451
NPWAPX

URGENT - WEATHER MESSAGE
National Weather Service Gaylord MI
1051 AM EDT Sat Apr 17 2021

MIZ020-021-025-026-031-099-172300-
/O.CON.KAPX.FZ.W.0001.210418T0600Z-210418T1200Z/
Leelanau-Antrim-Benzie-Grand Traverse-Manistee-Charlevoix-
Including the cities of Northport, Mancelona, Frankfort, 
Traverse City, Manistee, and Charlevoix
1051 AM EDT Sat Apr 17 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
SUNDAY...

* WHAT...Sub-freezing temperatures of 28 to 32 degrees expected 
  tonight.

* WHERE...Leelanau, Antrim, Benzie, Grand Traverse, Manistee and 
  Charlevoix Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions may kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly.

&&

$$
771 
WWUS73 KAPX 171927
NPWAPX

URGENT - WEATHER MESSAGE
National Weather Service Gaylord MI
327 PM EDT Sat Apr 17 2021

MIZ020-021-025-026-031-099-180330-
/O.CON.KAPX.FZ.W.0001.210418T0600Z-210418T1200Z/
Leelanau-Antrim-Benzie-Grand Traverse-Manistee-Charlevoix-
Including the cities of Northport, Mancelona, Frankfort, 
Traverse City, Manistee, and Charlevoix
327 PM EDT Sat Apr 17 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
SUNDAY...

* WHAT...Sub-freezing temperatures as low as 28 expected away from
  Lake Michigan.

* WHERE...Leelanau, Antrim, Benzie, Grand Traverse, Manistee and 
  Charlevoix Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions may damage crops and other
  sensitive vegetation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. 

&&

$$

JPB
220 
WWUS73 KAPX 180105
NPWAPX

URGENT - WEATHER MESSAGE
National Weather Service Gaylord MI
905 PM EDT Sat Apr 17 2021

MIZ020-021-025-026-031-099-180915-
/O.CON.KAPX.FZ.W.0001.210418T0600Z-210418T1200Z/
Leelanau-Antrim-Benzie-Grand Traverse-Manistee-Charlevoix-
Including the cities of Northport, Mancelona, Frankfort, 
Traverse City, Manistee, and Charlevoix
905 PM EDT Sat Apr 17 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
SUNDAY...

* WHAT...Sub-freezing temperatures as low as 28 expected away 
  from Lake Michigan.

* WHERE...Leelanau, Antrim, Benzie, Grand Traverse, Manistee and 
  Charlevoix Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions may damage crops and 
  other sensitive vegetation.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly.

&&

$$
283 
WWUS73 KAPX 180735
NPWAPX

URGENT - WEATHER MESSAGE
National Weather Service Gaylord MI
335 AM EDT Sun Apr 18 2021

MIZ020-021-025-026-031-099-181200-
/O.CON.KAPX.FZ.W.0001.000000T0000Z-210418T1200Z/
Leelanau-Antrim-Benzie-Grand Traverse-Manistee-Charlevoix-
Including the cities of Northport, Mancelona, Frankfort, 
Traverse City, Manistee, and Charlevoix
335 AM EDT Sun Apr 18 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

* WHAT...Sub-freezing temperatures as low as 28 degrees.

* WHERE...Leelanau, Antrim, Benzie, Grand Traverse, Manistee and 
  Charlevoix Counties.

* WHEN...Until 8 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. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

The office that day

Everything else NWS Gaylord, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 17, 3:36 PM EDTGale WatchAPX23 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.