Alert archive / Minnesota / Frost Advisories in 2008

Frost Advisory 2, NWS Twin Cities, MN

October 1, 200811 counties in Minnesota

NWS Twin Cities, MN issued this frost advisory at Oct 1, 2008, 2:23 PM CDT for 11 counties in Minnesota. It took effect at Oct 2, 2008, 4:00 AM CDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Oct 1, 2008, 2:23 PM CDT (19:23 UTC)
In effect from
Oct 2, 2008, 4:00 AM CDT
Expired
Oct 2, 2008, 8:00 AM CDT
In force
4 hr
Issued by
NWS Twin Cities, MN

Counties Blue Earth County, MN, Brown County, MN, Chippewa County, MN, Faribault County, MN, Lac qui Parle County, MN, Martin County, MN, Nicollet County, MN, Redwood County, MN, Renville County, MN, Watonwan County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 120 km from the middle of the area, began a volume at 19:28 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, 7.4 hours before the alert went out and 118 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 2008-10-01Temperature 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 2008-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
815 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
94 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 011923
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
223 PM CDT WED OCT 1 2008

...FROST POTENTIAL SOUTHWEST LATE TONIGHT...

.A COOL CANADIAN HIGH PRESSURE SYSTEM WILL DROP SOUTH OVER
SOUTHWEST MINNESOTA LATE TONIGHT. WITH A LIGHT WIND AND MOSTLY
CLEAR SKY...LOW TEMPERATURES WILL DROP OFF INTO THE MID 30S AFTER
MIDNIGHT...MAINLY ALONG AND SOUTH THE MINNESOTA RIVER VALLEY.
AREAS OF FROST WILL BE POSSIBLE IN THIS REGION OF THE STATE. 

AREA NURSERIES AND GARDNERS SHOULD TAKE NECESSARY PRECAUTIONS FOR
THOSE TEMPERATURE SENSITIVE PLANTS.

MNZ054-056-064-065-073>075-082-083-091-092-020330-
/O.NEW.KMPX.FR.Y.0002.081002T0900Z-081002T1300Z/
LAC QUI PARLE-CHIPPEWA-YELLOW MEDICINE-RENVILLE-REDWOOD-BROWN-
NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...MADISON...MONTEVIDEO...GRANITE FALLS...
OLIVIA...REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...
MANKATO...FAIRMONT...BLUE EARTH
223 PM CDT WED OCT 1 2008

...FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM CDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 8 AM CDT
THURSDAY. 

A COOL CANADIAN HIGH PRESSURE SYSTEM WILL DROP SOUTH OVER
SOUTHWEST MINNESOTA LATE TONIGHT. WITH A LIGHT WIND AND MOSTLY
CLEAR SKY...LOW TEMPERATURES WILL DROP OFF INTO THE MID 30S AFTER
MIDNIGHT...MAINLY ALONG AND SOUTH THE MINNESOTA RIVER VALLEY.
AREAS OF FROST WILL BE POSSIBLE IN THIS REGION OF THE STATE. 

AREA NURSERIES AND GARDNERS SHOULD TAKE NECESSARY PRECAUTIONS FOR
THOSE TEMPERATURE SENSITIVE PLANTS. OUTDOOR PLANTS MAY BE KILLED
IF LEFT UNCOVERED.


$$
2 follow-up statements
000 
WWUS73 KMPX 020242
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
942 PM CDT WED OCT 1 2008

...FROST TONIGHT FOR WEST CENTRAL THROUGH SOUTH CENTRAL
AREAS OF MINNESOTA...

.A FROST ADVISORY REMAINS IN EFFECT OVERNIGHT WEST OF A LINE FROM
WILLMAR TO ALBERT LEA. A COOL CANADIAN HIGH PRESSURE SYSTEM OVER
SOUTHWEST MINNESOTA WILL ALLOW FOR LIGHT WINDS AND A CLEAR SKY
OVERNIGHT. LOW TEMPERATURES THURSDAY MORNING WILL BOTTOM IN THE
MIDDLE 30S WITH AREAS OF FROST OCCURRING.

OUTDOOR PLANTS MAY BE DAMAGED IF LEFT UNCOVERED.

MNZ054-056-064-065-073>075-082-083-091-092-021045-
/O.CON.KMPX.FR.Y.0002.081002T0900Z-081002T1300Z/
LAC QUI PARLE-CHIPPEWA-YELLOW MEDICINE-RENVILLE-REDWOOD-BROWN-
NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...MADISON...MONTEVIDEO...GRANITE FALLS...
OLIVIA...REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...
MANKATO...FAIRMONT...BLUE EARTH
942 PM CDT WED OCT 1 2008

...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM CDT
THURSDAY...

A FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 8 AM CDT
THURSDAY. 

A COOL CANADIAN HIGH PRESSURE SYSTEM OVER SOUTHWEST MINNESOTA
WILL ALLOW FOR LIGHT WINDS AND A CLEAR SKY OVERNIGHT. LOW
TEMPERATURES THURSDAY MORNING WILL BOTTOM IN THE MIDDLE 30S WITH
AREAS OF FROST OCCURRING.

OUTDOOR PLANTS MAY BE DAMAGED IF LEFT UNCOVERED.

$$

RAH
000 
WWUS73 KMPX 020937
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
437 AM CDT THU OCT 2 2008

...FROST EARLY THIS MORNING FOR WEST CENTRAL THROUGH SOUTH CENTRAL AREAS
OF MINNESOTA...

.A FROST ADVISORY REMAINS IN EFFECT EARLY THIS MORNING WEST OF A LINE
FROM WILLMAR TO ALBERT LEA. A COOL CANADIAN HIGH PRESSURE SYSTEM
OVER SOUTHWEST MINNESOTA WILL ALLOW FOR LIGHT WINDS AND A CLEAR
SKY THROUGH DAYBREAK. LOW TEMPERATURES THIS MORNING WILL BOTTOM IN
THE MIDDLE 30S WITH AREAS OF FROST OCCURRING.

OUTDOOR PLANTS MAY BE DAMAGED IF LEFT UNCOVERED.

MNZ054-056-064-065-073>075-082-083-091-092-021300-
/O.CON.KMPX.FR.Y.0002.000000T0000Z-081002T1300Z/
LAC QUI PARLE-CHIPPEWA-YELLOW MEDICINE-RENVILLE-REDWOOD-BROWN-
NICOLLET-WATONWAN-BLUE EARTH-MARTIN-FARIBAULT-
INCLUDING THE CITIES OF...MADISON...MONTEVIDEO...GRANITE FALLS...
OLIVIA...REDWOOD FALLS...NEW ULM...ST. PETER...ST. JAMES...
MANKATO...FAIRMONT...BLUE EARTH
437 AM CDT THU OCT 2 2008

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

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

A COOL CANADIAN HIGH PRESSURE SYSTEM OVER SOUTHWEST MINNESOTA
WILL ALLOW FOR LIGHT WINDS AND A CLEAR SKY THROUGH DAYBREAK. LOW
TEMPERATURES THIS MORNING WILL BOTTOM IN THE MIDDLE 30S WITH AREAS OF
FROST OCCURRING.

OUTDOOR PLANTS MAY BE DAMAGED IF LEFT UNCOVERED.

$$

MDB/RAH

Nearby

Frost Advisories in Minnesota, 2008Every frost advisory in 2008

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.