Alert archive / Minnesota / Frost Advisories in 2015

Frost Advisory 8, NWS Twin Cities, MN

October 2, 20156 counties in Minnesota; 6 counties in Wisconsin

NWS Twin Cities, MN issued this frost advisory at Oct 2, 2015, 2:57 PM CDT for 6 counties in Minnesota; 6 counties in Wisconsin. It took effect at Oct 3, 2015, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Oct 2, 2015, 2:57 PM CDT (19:57 UTC)
In effect from
Oct 3, 2015, 1:00 AM CDT
Expired
Oct 3, 2015, 8:00 AM CDT
In force
7 hr
Issued by
NWS Twin Cities, MN

Counties Benton County, MN, Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Polk County, WI, Rusk County, WI

The radar

The Minneapolis radar (KMPX), 103 km from the middle of the area, began a volume at 20:02 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, 8.0 hours before the alert went out and 105 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 2015-10-02Temperature 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 2015-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -62 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
1051 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-62 m²/s²
0-3 km storm-relative helicity
-86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

766 
WWUS73 KMPX 021957
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
257 PM CDT FRI OCT 2 2015

...FROST IS ANTICIPATED LATE TONIGHT FOR PORTIONS OF CENTRAL
MINNESOTA INTO WESTERN WISCONSIN...

.A FROST ADVISORY HAS BEEN ISSUED FOR LATE TONIGHT FOR PORTIONS OF
CENTRAL AND EAST CENTRAL MINNESOTA...AND WEST CENTRAL WISCONSIN.
THE ADVISORY IS FOR AN AREA ALONG AND NORTH OF A LINE FROM LITTLE
FALLS TO MENOMONIE AND EAU CLAIRE. TEMPERATURES ARE EXPECTED TO
DROP INTO THE MIDDLE 30S UNDER A CLEAR SKY. AN EAST WIND WILL
PERSIST OVERNIGHT...BUT IT WILL BE A RELATIVELY LIGHT WIND IN
SHELTERED AREAS. 

MNZ043>045-050-052-053-WIZ014>016-025-027-028-030400-
/O.NEW.KMPX.FR.Y.0008.151003T0600Z-151003T1300Z/
MORRISON-MILLE LACS-KANABEC-BENTON-ISANTI-CHISAGO-POLK-BARRON-
RUSK-DUNN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...CAMBRIDGE...CENTER CITY...OSCEOLA...RICE LAKE...
LADYSMITH...MENOMONIE...CHIPPEWA FALLS...EAU CLAIRE
257 PM CDT FRI OCT 2 2015

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

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 8 AM CDT
SATURDAY. 

* TEMPERATURE...33 TO 37.

* WIND...EAST 4-7 MPH WITH LIGHTER WINDS IN SHELTERED AREAS.

* IMPACTS...OUTDOOR PLANTS AND VEGETATION COULD BE DAMAGED OR
  KILLED IF NOT PROTECTED OR BROUGHT INDOORS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
2 follow-up statements
881 
WWUS73 KMPX 030208
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
908 PM CDT FRI OCT 2 2015

...FROST IS ANTICIPATED LATE TONIGHT FOR PORTIONS OF CENTRAL
MINNESOTA INTO WESTERN WISCONSIN...

.A FROST ADVISORY REMAINS IN EFFECT FOR PORTIONS OF CENTRAL AND
EAST CENTRAL MINNESOTA...AND WEST CENTRAL WISCONSIN THROUGH
SATURDAY MORNING. THE ADVISORY IS FOR AN AREA ALONG AND NORTH OF
A LINE FROM LITTLE FALLS TO MENOMONIE AND EAU CLAIRE. TEMPERATURES
ARE EXPECTED TO DROP INTO THE MIDDLE 30S UNDER A CLEAR SKY. AN
EAST WIND WILL PERSIST OVERNIGHT...BUT IT WILL BE A RELATIVELY
LIGHT WIND IN SHELTERED AREAS.

MNZ043>045-050-052-053-WIZ014>016-025-027-028-031015-
/O.CON.KMPX.FR.Y.0008.151003T0600Z-151003T1300Z/
MORRISON-MILLE LACS-KANABEC-BENTON-ISANTI-CHISAGO-POLK-BARRON-
RUSK-DUNN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...CAMBRIDGE...CENTER CITY...OSCEOLA...RICE LAKE...
LADYSMITH...MENOMONIE...CHIPPEWA FALLS...EAU CLAIRE
908 PM CDT FRI OCT 2 2015

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

* TEMPERATURE...33 TO 37.

* WIND...EAST 4-7 MPH WITH LIGHTER WINDS IN SHELTERED AREAS.

* IMPACTS...OUTDOOR PLANTS AND VEGETATION COULD BE DAMAGED OR 
  KILLED IF NOT PROTECTED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
533 
WWUS73 KMPX 030903
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
403 AM CDT SAT OCT 3 2015

...FROST IS EXPECTED THROUGH SUNRISE FOR PORTIONS OF CENTRAL
MINNESOTA INTO WESTERN WISCONSIN...

.A FROST ADVISORY REMAINS IN EFFECT FOR PORTIONS OF CENTRAL AND
EAST CENTRAL MINNESOTA...AND WEST CENTRAL WISCONSIN THROUGH
8 AM. THE ADVISORY IS FOR AN AREA ALONG AND NORTH OF A LINE FROM
LITTLE FALLS TO MENOMONIE AND EAU CLAIRE. 

MNZ043>045-050-052-053-WIZ014>016-025-027-028-031300-
/O.CON.KMPX.FR.Y.0008.000000T0000Z-151003T1300Z/
MORRISON-MILLE LACS-KANABEC-BENTON-ISANTI-CHISAGO-POLK-BARRON-
RUSK-DUNN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...CAMBRIDGE...CENTER CITY...OSCEOLA...RICE LAKE...
LADYSMITH...MENOMONIE...CHIPPEWA FALLS...EAU CLAIRE
403 AM CDT SAT OCT 3 2015

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

* TEMPERATURE...33 TO 37.

* WIND...EAST 4-7 MPH WITH LIGHTER WINDS IN SHELTERED AREAS.

* IMPACTS...OUTDOOR PLANTS AND VEGETATION COULD BE DAMAGED OR 
  KILLED IF NOT PROTECTED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

Nearby

Frost Advisories in Minnesota, 2015Frost Advisories in Wisconsin, 2015Every frost advisory in 2015

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.