Alert archive / Wisconsin / Frost Advisories in 2013

Frost Advisory 4, NWS Twin Cities, MN

September 15, 20136 counties in Wisconsin; 4 counties in Minnesota

NWS Twin Cities, MN issued this frost advisory at Sep 15, 2013, 3:18 AM CDT for 6 counties in Wisconsin; 4 counties in Minnesota. It took effect at Sep 16, 2013, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Sep 15, 2013, 3:18 AM CDT (08:18 UTC)
In effect from
Sep 16, 2013, 1:00 AM CDT
Expired
Sep 16, 2013, 8:00 AM CDT
In force
7 hr
Issued by
NWS Twin Cities, MN

Counties Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs 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), 117 km from the middle of the area, began a volume at 08:18 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 00:00Z, 8.3 hours before the alert went out and 119 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 00:00Z on 2013-09-15Temperature 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 00:00Z on 2013-09-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 square meters per square second.193958Sfc1 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
1252 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
567 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.

165 
WWUS73 KMPX 150818
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
318 AM CDT SUN SEP 15 2013

...FROST POSSIBLE LATE TONIGHT...

.A CLEAR SKY AND LIGHT WINDS WILL GENERATE COLD TEMPERATURES AND
THE POSSIBILITY OF FROST OVER A PORTION OF EAST CENTRAL MINNESOTA
INTO WEST CENTRAL WISCONSIN. A FROST ADVISORY IS IN EFFECT FROM 
1 AM UNTIL 8 AM MONDAY MORNING. THE AREA IS LOCATED NORTHEAST OF A
LINE FROM NEAR CAMBRIDGE TO EAU CLAIRE.

THE NEAR FREEZING TEMPERATURES...ESPECIALLY IN LOW LYING
AREAS...WILL RESULT IN AREAS OF FROST. THE FROST WILL DAMAGE OR
COULD KILL TEMPERATURE SENSITIVE VEGETATION THAT IS NOT GIVEN
PROTECTION FROM THE COLD.

MNZ044-045-052-053-WIZ014>016-025-027-028-151900-
/O.NEW.KMPX.FR.Y.0004.130916T0600Z-130916T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-DUNN-CHIPPEWA-
EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...MENOMONIE...BOYCEVILLE...CHIPPEWA FALLS...BLOOMER...
EAU CLAIRE...ALTOONA
318 AM CDT SUN SEP 15 2013

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

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

* TEMPERATURE: LOWER AND MIDDLE 30S.

* IMPACTS: THE NEAR FREEZING TEMPERATURES...ESPECIALLY IN LOW
  LYING AREAS...WILL RESULT IN AREAS OF FROST. THE FROST WILL
  DAMAGE OR COULD KILL TEMPERATURE SENSITIVE VEGETATION THAT IS NOT
  GIVEN PROTECTION FROM THE COLD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
3 follow-up statements
300 
WWUS73 KMPX 151735
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1235 PM CDT SUN SEP 15 2013

...FROST POSSIBLE LATE TONIGHT...

.A CLEAR SKY AND LIGHT WINDS WILL GENERATE COLD TEMPERATURES AND
THE POSSIBILITY OF FROST OVER A PORTION OF EAST CENTRAL MINNESOTA
INTO WEST CENTRAL WISCONSIN. A FROST ADVISORY IS IN EFFECT FROM
1 AM UNTIL 8 AM MONDAY MORNING. THE AREA IS LOCATED NORTHEAST OF
A LINE FROM NEAR CAMBRIDGE TO EAU CLAIRE.

THE NEAR FREEZING TEMPERATURES...ESPECIALLY IN LOW LYING AREAS...
WILL RESULT IN AREAS OF FROST. THE FROST WILL DAMAGE OR COULD
KILL TEMPERATURE SENSITIVE VEGETATION THAT IS NOT GIVEN
PROTECTION FROM THE COLD.

MNZ044-045-052-053-WIZ014>016-025-027-028-160145-
/O.CON.KMPX.FR.Y.0004.130916T0600Z-130916T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-DUNN-CHIPPEWA-
EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...MENOMONIE...BOYCEVILLE...CHIPPEWA FALLS...BLOOMER...
EAU CLAIRE...ALTOONA
1235 PM CDT SUN SEP 15 2013

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

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

* TEMPERATURE: LOWER AND MIDDLE 30S.

* IMPACTS: THE NEAR FREEZING TEMPERATURES...ESPECIALLY IN LOW 
  LYING AREAS...WILL RESULT IN AREAS OF FROST. THE FROST WILL 
  DAMAGE OR COULD KILL TEMPERATURE SENSITIVE VEGETATION THAT IS 
  NOT GIVEN PROTECTION FROM THE COLD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
762 
WWUS73 KMPX 160120
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
820 PM CDT SUN SEP 15 2013

...FROST LIKELY LATE TONIGHT...

.A FROST ADVISORY REMAINS IN EFFECT OVERNIGHT ALONG AND NORTH OF
A LINE FROM MILACA TO EAU CLAIRE. DIMINISHING CLOUDS AND WIND
WILL ALLOW TEMPERATURES TO FALL INTO THE LOWER TO MIDDLE 30S
TOWARDS DAYBREAK WITH AREAS OF FROST OCCURRING. THE FROST WILL
DAMAGE OR COULD KILL SENSITIVE VEGETATION THAT IS NOT GIVEN
PROTECTION FROM THE COLD.

MNZ044-045-052-053-WIZ014>016-025-027-028-160930-
/O.CON.KMPX.FR.Y.0004.130916T0600Z-130916T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-DUNN-CHIPPEWA-
EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...MENOMONIE...BOYCEVILLE...CHIPPEWA FALLS...BLOOMER...
EAU CLAIRE...ALTOONA
820 PM CDT SUN SEP 15 2013

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

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

* TEMPERATURE: LOWER TO MIDDLE 30S.

* IMPACTS: THE NEAR FREEZING TEMPERATURES...ESPECIALLY IN LOW 
  LYING AREAS...WILL RESULT IN AREAS OF FROST. THE FROST WILL 
  DAMAGE OR COULD KILL TEMPERATURE SENSITIVE VEGETATION THAT IS 
  NOT GIVEN PROTECTION FROM THE COLD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
630 
WWUS73 KMPX 160722
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
222 AM CDT MON SEP 16 2013

...FROST LIKELY LATE TONIGHT...

.A FROST ADVISORY REMAINS IN EFFECT OVERNIGHT ALONG AND NORTH OF
A LINE FROM MILACA TO EAU CLAIRE. DIMINISHING CLOUDS AND WIND
WILL ALLOW TEMPERATURES TO FALL INTO THE LOWER TO MIDDLE 30S
TOWARDS DAYBREAK WITH AREAS OF FROST OCCURRING. THE FROST WILL
DAMAGE OR COULD KILL SENSITIVE VEGETATION THAT IS NOT GIVEN
PROTECTION FROM THE COLD.

MNZ044-045-052-053-WIZ014>016-025-027-028-161300-
/O.CON.KMPX.FR.Y.0004.000000T0000Z-130916T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-DUNN-CHIPPEWA-
EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...MENOMONIE...BOYCEVILLE...CHIPPEWA FALLS...BLOOMER...
EAU CLAIRE...ALTOONA
222 AM CDT MON SEP 16 2013

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

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

* TEMPERATURE: LOWER TO MIDDLE 30S.

* IMPACTS: THE NEAR FREEZING TEMPERATURES...ESPECIALLY IN LOW 
  LYING AREAS...WILL RESULT IN AREAS OF FROST. THE FROST WILL 
  DAMAGE OR COULD KILL TEMPERATURE SENSITIVE VEGETATION THAT IS 
  NOT GIVEN PROTECTION FROM THE COLD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Nearby

Frost Advisories in Wisconsin, 2013Frost Advisories in Minnesota, 2013Every frost advisory in 2013

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.