Alert archive / Minnesota / Frost Advisories in 2021

Frost Advisory 2, NWS Grand Forks, ND

May 28, 20215 counties in Minnesota

NWS Grand Forks, ND issued this frost advisory at May 28, 2021, 2:35 PM CDT for 5 counties in Minnesota. It took effect at May 29, 2021, 1:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
May 28, 2021, 2:35 PM CDT (19:35 UTC)
In effect from
May 29, 2021, 1:00 AM CDT
Expired
May 29, 2021, 6:43 AM CDT
In force
6 hr
Issued by
NWS Grand Forks, ND

Counties Beltrami County, MN, Clearwater County, MN, Hubbard County, MN, Lake of the Woods County, MN, Wadena County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 173 km from the middle of the area, began a volume at 19:35 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

International Fa, MN (KINL), launched 12:00Z, 7.6 hours before the alert went out and 167 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, International Fa, MN at 12:00Z on 2021-05-28Temperature 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, International Fa, MN at 12:00Z on 2021-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 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
1729 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

886 
WWUS73 KFGF 281935
NPWFGF

URGENT - WEATHER MESSAGE
National Weather Service Grand Forks ND
235 PM CDT Fri May 28 2021

MNZ006-009-016-017-023-024-032-291300-
/O.NEW.KFGF.FR.Y.0002.210529T0600Z-210529T1300Z/
Lake Of The Woods-North Beltrami-North Clearwater-South Beltrami-
South Clearwater-Hubbard-Wadena-
Including the cities of Baudette, Red Lake, Redby, Ponemah, 
Bagley, Clearbrook, Bemidji, Alida, Ebro, Lake Itasca, 
Long Lost Lake, Lower Rice Lake, Roy Lake, Upper Rice Lake, 
Park Rapids, Wadena, and Menahga
235 PM CDT Fri May 28 2021

...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

* WHERE...Lake Of The Woods, North Beltrami, North Clearwater, 
  South Beltrami, South Clearwater, Hubbard and Wadena Counties.

* WHEN...From 1 AM to 8 AM CDT Saturday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
2 follow-up statements
729 
WWUS73 KFGF 290258
NPWFGF

URGENT - WEATHER MESSAGE
National Weather Service Grand Forks ND
958 PM CDT Fri May 28 2021

MNZ006-009-016-017-023-024-032-291300-
/O.CON.KFGF.FR.Y.0002.210529T0600Z-210529T1300Z/
Lake Of The Woods-North Beltrami-North Clearwater-South Beltrami-
South Clearwater-Hubbard-Wadena-
Including the cities of Baudette, Red Lake, Redby, Ponemah, 
Bagley, Clearbrook, Bemidji, Alida, Ebro, Lake Itasca, 
Long Lost Lake, Lower Rice Lake, Roy Lake, Upper Rice Lake, 
Park Rapids, Wadena, and Menahga
958 PM CDT Fri May 28 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT
SATURDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...North Beltrami, North Clearwater, South Beltrami, 
  Wadena, Lake Of The Woods, Hubbard and South Clearwater 
  Counties.

* WHEN...From 1 AM to 8 AM CDT Saturday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
078 
WWUS73 KFGF 291143
NPWFGF

URGENT - WEATHER MESSAGE
National Weather Service Grand Forks ND
643 AM CDT Sat May 29 2021

MNZ006-009-016-017-023-024-032-291245-
/O.CAN.KFGF.FR.Y.0002.000000T0000Z-210529T1300Z/
Lake Of The Woods-North Beltrami-North Clearwater-South Beltrami-
South Clearwater-Hubbard-Wadena-
Including the cities of Baudette, Red Lake, Redby, Ponemah, 
Bagley, Clearbrook, Bemidji, Alida, Ebro, Lake Itasca, 
Long Lost Lake, Lower Rice Lake, Roy Lake, Upper Rice Lake, 
Park Rapids, Wadena, and Menahga
643 AM CDT Sat May 29 2021

...FROST ADVISORY IS CANCELLED...

Temperatures are beginning to increase and frost is no longer
expected this morning. 

$$

Nearby

Frost Advisories in Minnesota, 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.