Alert archive / Minnesota / Frost Advisories in 2005

Frost Advisory 1, NWS Twin Cities, MN

September 28, 200514 counties in Minnesota; Barron County, Polk County, Rusk County, Wisconsin

NWS Twin Cities, MN issued this frost advisory at Sep 28, 2005, 3:20 PM CDT for 14 counties in Minnesota; Barron County, Polk County, Rusk County, Wisconsin. It took effect at Sep 29, 2005, 3:00 AM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Sep 28, 2005, 3:20 PM CDT (20:20 UTC)
In effect from
Sep 29, 2005, 3:00 AM CDT
Expired
Sep 29, 2005, 8:00 AM CDT
In force
5 hr
Issued by
NWS Twin Cities, MN

Counties Benton County, MN, Chisago County, MN, Douglas County, MN, Isanti County, MN, Kanabec County, MN, Lac qui Parle County, MN, Mille Lacs County, MN, Morrison County, MN, Pope County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Barron County, WI, Polk County, WI, Rusk County, WI

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 92 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 2005-09-28Temperature 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, Minneapolis, MN at 12:00Z on 2005-09-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -173 square meters per square second.1939587897117136Sfc1 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
897 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
-173 m²/s²
0-3 km storm-relative helicity
49 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.

000 
WWUS73 KMPX 282020
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
320 PM CDT WED SEP 28 2005

...FIRST FROST THREAT OF THE SEASON...

.IT WILL BE A COLD NIGHT ACROSS CENTRAL MINNESOTA AND PARTS OF
WEST CENTRAL WISCONSIN...WHICH WILL MEAN THE FIRST CHANCE OF
SIGNIFICANT FROST OF THE FALL SEASON. CLEAR SKIES AND BUILDING
HIGH PRESSURE OVERNIGHT...WILL ALLOW TEMPERATURES TO DROP INTO
THE LOWER 30S OVER MUCH OF CENTRAL MINNESOTA AND PARTS OF WEST
CENTRAL WISCONSIN. THIS WILL MEAN A GOOD CHANCE OF WIDESPREAD
FROST.

MNZ041>045-047>055-WIZ014>016-290430-
/X.NEW.KMPX.FR.Y.0001.050929T0800Z-050929T1300Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-POLK-BARRON-
RUSK-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...
LITTLE FALLS...PRINCETON...MORA...MORRIS...GLENWOOD...ST. CLOUD...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MADISON...BENSON...
AMERY...BALSAM LAKE...RICE LAKE...BARRON...LADYSMITH
320 PM CDT WED SEP 28 2005

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

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM CDT
THURSDAY. 

CLEAR SKIES AND BUILDING HIGH PRESSURE OVERNIGHT WILL ALLOW
TEMPERATURES TO DROP INTO THE LOWER 30S. THIS WILL MEAN A GOOD
CHANCE OF WIDESPREAD FROST.

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

$$
JPR
1 follow-up statement
000 
WWUS73 KMPX 290659
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
159 AM CDT THU SEP 29 2005

...FIRST FROST THREAT OF THE SEASON...

.IT WILL BE A COLD MORNING ACROSS CENTRAL MINNESOTA AND PARTS OF WEST
CENTRAL WISCONSIN...WHICH WILL MEAN THE FIRST CHANCE OF
SIGNIFICANT FROST OF THE FALL SEASON. CLEAR SKIES AND BUILDING
HIGH PRESSURE...WILL ALLOW TEMPERATURES TO DROP INTO THE LOWER 30S
OVER MUCH OF CENTRAL MINNESOTA AND PARTS OF WEST CENTRAL
WISCONSIN. THIS WILL MEAN A GOOD CHANCE OF WIDESPREAD FROST.

MNZ041>045-047>055-WIZ014>016-291300-
/X.CON.KMPX.FR.Y.0001.050929T0800Z-050929T1300Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-POLK-BARRON-
RUSK-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...
LITTLE FALLS...PRINCETON...MORA...MORRIS...GLENWOOD...ST. CLOUD...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MADISON...BENSON...
AMERY...BALSAM LAKE...RICE LAKE...BARRON...LADYSMITH
159 AM CDT THU SEP 29 2005

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

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

CLEAR SKIES AND BUILDING HIGH PRESSURE WILL ALLOW TEMPERATURES TO
DROP INTO THE LOWER 30S THIS MORNING. THIS WILL MEAN A GOOD CHANCE OF
WIDESPREAD FROST.

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

$$

Nearby

Frost Advisories in Minnesota, 2005Frost Advisories in Wisconsin, 2005Every frost advisory in 2005

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.