Alert archive / Minnesota / Frost Advisories in 2018

Frost Advisory 1, NWS Twin Cities, MN

September 27, 20189 counties in Minnesota

NWS Twin Cities, MN issued this frost advisory at Sep 27, 2018, 3:36 PM CDT for 9 counties in Minnesota. It took effect at Sep 28, 2018, 3:00 AM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Sep 27, 2018, 3:36 PM CDT (20:36 UTC)
In effect from
Sep 28, 2018, 3:00 AM CDT
Expired
Sep 28, 2018, 8:00 AM CDT
In force
5 hr
Issued by
NWS Twin Cities, MN

Counties Benton County, MN, Douglas County, MN, Mille Lacs County, MN, Morrison County, MN, Pope County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 143 km from the middle of the area, began a volume at 20:39 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.6 hours before the alert went out and 141 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, Minneapolis, MN at 12:00Z on 2018-09-27Temperature 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, Minneapolis, MN at 12:00Z on 2018-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.19395878Sfc1 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
1627 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

176 
WWUS73 KMPX 272036
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
336 PM CDT Thu Sep 27 2018

MNZ041>044-047>050-055-280445-
/O.NEW.KMPX.FR.Y.0001.180928T0800Z-180928T1300Z/
Douglas-Todd-Morrison-Mille Lacs-Stevens-Pope-Stearns-Benton-
Swift-
Including the cities of Alexandria, Long Prairie, Little Falls, 
Princeton, Morris, Glenwood, St Cloud, Foley, and Benson
336 PM CDT Thu Sep 27 2018

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM CDT FRIDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Frost Advisory, which is in effect from 3 AM to 8 AM CDT
Friday. 

* TEMPERATURE...Low to mid 30s.

* IMPACTS...Vegetation may be damaged if left unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
4 follow-up statements
124 
WWUS73 KMPX 280129
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
829 PM CDT Thu Sep 27 2018

MNZ041>044-047>050-055-280930-
/O.CON.KMPX.FR.Y.0001.180928T0800Z-180928T1300Z/
Douglas-Todd-Morrison-Mille Lacs-Stevens-Pope-Stearns-Benton-
Swift-
Including the cities of Alexandria, Long Prairie, Little Falls, 
Princeton, Morris, Glenwood, St Cloud, Foley, and Benson
829 PM CDT Thu Sep 27 2018

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM CDT
FRIDAY...

* TEMPERATURE...Low to mid 30s.

* IMPACTS...Vegetation may be damaged if left unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$

jrb
598 
WWUS73 KMPX 280530
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
1230 AM CDT Fri Sep 28 2018

MNZ041>044-047>050-055-281300-
/O.CON.KMPX.FR.Y.0001.180928T0800Z-180928T1300Z/
Douglas-Todd-Morrison-Mille Lacs-Stevens-Pope-Stearns-Benton-
Swift-
Including the cities of Alexandria, Long Prairie, Little Falls, 
Princeton, Morris, Glenwood, St Cloud, Foley, and Benson
1230 AM CDT Fri Sep 28 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* TEMPERATURE...Low to mid 30s.

* IMPACTS...Vegetation may be damaged if left unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
878 
WWUS73 KMPX 280716
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
216 AM CDT Fri Sep 28 2018

MNZ044-280830-
/O.CAN.KMPX.FR.Y.0001.180928T0800Z-180928T1300Z/
Mille Lacs-
Including the city of Princeton
216 AM CDT Fri Sep 28 2018

...FROST ADVISORY IS CANCELLED...

The National Weather Service in Twin Cities/Chanhassen has
cancelled the Frost Advisory. 

$$

MNZ041>043-047>050-055-281300-
/O.CON.KMPX.FR.Y.0001.180928T0800Z-180928T1300Z/
Douglas-Todd-Morrison-Stevens-Pope-Stearns-Benton-Swift-
Including the cities of Alexandria, Long Prairie, Little Falls, 
Morris, Glenwood, St Cloud, Foley, and Benson
216 AM CDT Fri Sep 28 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* TEMPERATURE...Low to mid 30s.

* IMPACTS...Vegetation may be damaged if left unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
199 
WWUS73 KMPX 280821
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
321 AM CDT Fri Sep 28 2018

MNZ041>043-049-050-281630-
/O.NEW.KMPX.FZ.W.0001.180929T0400Z-180929T1400Z/
/O.CON.KMPX.FR.Y.0001.000000T0000Z-180928T1300Z/
Douglas-Todd-Morrison-Stearns-Benton-
Including the cities of Alexandria, Long Prairie, Little Falls, 
St Cloud, and Foley
321 AM CDT Fri Sep 28 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...
...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM CDT
SATURDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Freeze Warning, which is in effect from 11 PM this evening to
9 AM CDT Saturday. 

* TEMPERATURE...Lows in the mid 30s this morning. Lows 25 to 30
  degrees Saturday morning.

* IMPACTS...Vegetation may be damaged or killed if left 
  unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

MNZ047-048-055-281630-
/O.NEW.KMPX.FZ.W.0001.180929T0800Z-180929T1400Z/
/O.CON.KMPX.FR.Y.0001.000000T0000Z-180928T1300Z/
Stevens-Pope-Swift-
Including the cities of Morris, Glenwood, and Benson
321 AM CDT Fri Sep 28 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...
...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM CDT SATURDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Freeze Warning, which is in effect from 3 AM to 9 AM CDT
Saturday. 

* TEMPERATURE...Lows in the mid 30s this morning. Lows around 30 
  degrees Saturday morning.

* IMPACTS...Vegetation may be damaged or killed if left 
  unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

MNZ044-045-281630-
/O.NEW.KMPX.FZ.W.0001.180929T0400Z-180929T1400Z/
Mille Lacs-Kanabec-
Including the cities of Princeton and Mora
321 AM CDT Fri Sep 28 2018

...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM CDT
SATURDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Freeze Warning, which is in effect from 11 PM this evening to
9 AM CDT Saturday. 

* TEMPERATURE...Lows in 25 to 30 degrees Saturday morning.

* IMPACTS...Vegetation may be damaged or killed if left 
  unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

MNZ051>054-056>070-076>078-085-WIZ014>016-023>028-281630-
/O.NEW.KMPX.FZ.W.0001.180929T0800Z-180929T1400Z/
Sherburne-Isanti-Chisago-Lac Qui Parle-Chippewa-Kandiyohi-Meeker-
Wright-Hennepin-Anoka-Ramsey-Washington-Yellow Medicine-Renville-
McLeod-Sibley-Carver-Scott-Dakota-Le Sueur-Rice-Goodhue-Steele-
Polk-Barron-Rusk-St. Croix-Pierce-Dunn-Pepin-Eau Claire-
Including the cities of Elk River, Cambridge, Center City, 
Madison, Montevideo, Willmar, Litchfield, Monticello, 
Minneapolis, Blaine, St Paul, Stillwater, Granite Falls, Olivia, 
Hutchinson, Gaylord, Chaska, Shakopee, Hastings, Le Sueur, 
Faribault, Red Wing, Owatonna, Osceola, Rice Lake, Ladysmith, 
Hudson, River Falls, Prescott, Menomonie, Durand, Chippewa Falls,
and Eau Claire
321 AM CDT Fri Sep 28 2018

...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM CDT SATURDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Freeze Warning, which is in effect from 3 AM to 9 AM CDT
Saturday. 

* TEMPERATURE...Lows in the upper 20s to lower 30s Saturday 
  morning.

* IMPACTS...Vegetation may be damaged or killed if left 
  unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

MNZ073>075-082>084-091>093-281630-
/O.NEW.KMPX.FR.Y.0002.180929T0800Z-180929T1400Z/
Redwood-Brown-Nicollet-Watonwan-Blue Earth-Waseca-Martin-
Faribault-Freeborn-
Including the cities of Redwood Falls, New Ulm, St Peter, 
St James, Mankato, Waseca, Fairmont, Blue Earth, and Albert Lea
321 AM CDT Fri Sep 28 2018

...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM CDT SATURDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Frost Advisory, which is in effect from 3 AM to 9 AM CDT
Saturday. 

* TEMPERATURE...Lows 33 to 35 degrees Saturday morning.

* IMPACTS...Vegetation may be damaged if left unprotected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 26, 8:54 PM CDTRiver Flood WarningMPXDakota, Hennepin, Scott6 days

Nearby

Frost Advisories in Minnesota, 2018Every frost advisory in 2018

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.