Alert archive / Minnesota / Freeze Warnings in 2012

Freeze Warning 5, NWS Twin Cities, MN

April 11, 201242 counties in Minnesota; 9 counties in Wisconsin

NWS Twin Cities, MN issued this freeze warning at Apr 11, 2012, 2:28 PM CDT for 42 counties in Minnesota; 9 counties in Wisconsin. It took effect at Apr 12, 2012, 1:00 AM CDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 11, 2012, 2:28 PM CDT (19:28 UTC)
In effect from
Apr 12, 2012, 1:00 AM CDT
Expired
Apr 12, 2012, 9:00 AM CDT
In force
8 hr
Issued by
NWS Twin Cities, MN
All 51 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Dakota County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 20 km from the middle of the area, began a volume at 19:34 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, 7.5 hours before the alert went out and 17 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 2012-04-11Temperature 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 2012-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939587897Sfc1 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
1404 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
18 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.

892 
WWUS73 KMPX 111928
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
228 PM CDT WED APR 11 2012

...WIDESPREAD SUB-FREEZING TEMPERATURES EXPECTED AGAIN TONIGHT...

.A FREEZING WARNING HAS BEEN ISSUED FOR TONIGHT FOR ALL OF CENTRAL
AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN. ONE MORE
SUB-FREEZING NIGHT IS IN STORE FOR THE REGION AS HIGH PRESSURE
PASSES BY. OVERNIGHT LOW TEMPERATURES ARE FORECAST TO REACH 24 TO
30 DEGREES ACROSS THE WARNING AREA. CENTRAL MINNESOTA AND WEST
CENTRAL WISCONSIN HAVE THE BEST CHANCE OF SEEING LOWS IN THE
MIDDLE 20S. 

THE SUB-FREEZING TEMPERATURES WILL BEGIN AFTER MIDNIGHT AND LAST
UNTIL AROUND 9 AM THURSDAY MORNING. THE EXTENDED DURATION OF
THESE SUB-FREEZING TEMPERATURES WILL BE PARTICULARLY DETRIMENTAL
TO TENDER VEGETATION AND FRUIT TREES. 

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
120330-
/O.NEW.KMPX.FZ.W.0005.120412T0600Z-120412T1400Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...
LITTLE FALLS...PRINCETON...MORA...MORRIS...GLENWOOD...ST. CLOUD...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MADISON...BENSON...
MONTEVIDEO...WILLMAR...LITCHFIELD...MONTICELLO...MINNEAPOLIS...
BLAINE...ST. PAUL...STILLWATER...GRANITE FALLS...OLIVIA...
HUTCHINSON...GAYLORD...CHASKA...SHAKOPEE...BURNSVILLE...
REDWOOD FALLS...NEW ULM...ST. PETER...LE SUEUR...FARIBAULT...
RED WING...ST. JAMES...MANKATO...WASECA...OWATONNA...FAIRMONT...
BLUE EARTH...ALBERT LEA...AMERY...BALSAM LAKE...RICE LAKE...
BARRON...LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...
PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...PEPIN...
CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
228 PM CDT WED APR 11 2012

...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A FREEZE WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM CDT
THURSDAY. 

* TIMING...FROM 1 AM THROUGH 9 AM THURSDAY.

* TEMPERATURES...SUB-FREEZING TEMPERATURES ARE LIKELY AGAIN
  TONIGHT...WITH LOWS FROM 24 TO 30 DEGREES. READINGS IN THE
  MIDDLE 20S ARE MOST LIKELY ACROSS CENTRAL MINNESOTA AND WEST
  CENTRAL WISCONSIN.

* IMPACTS...FRUIT TREES AND YOUNG VEGETATION WILL BE AT RISK.

 PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

RAH
3 follow-up statements
373 
WWUS73 KMPX 120320
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1020 PM CDT WED APR 11 2012

...WIDESPREAD SUB-FREEZING TEMPERATURES EXPECTED AGAIN TONIGHT...

.A FREEZING WARNING HAS BEEN ISSUED FOR TONIGHT FOR ALL OF
CENTRAL AND SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN.
ONE MORE SUB-FREEZING NIGHT IS IN STORE FOR THE REGION AS HIGH
PRESSURE PASSES BY. OVERNIGHT LOW TEMPERATURES ARE FORECAST TO
REACH 24 TO 30 DEGREES ACROSS THE WARNING AREA...ALTHOUGH THE
DURATION OF THE LOWEST TEMPERATURES MAY NOT LAST QUITE AS LONG
AS LAST NIGHT. CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN HAVE
THE GREATEST RISK OF SEEING LOWS IN THE MIDDLE 20S.

THE SUB-FREEZING TEMPERATURES WILL BEGIN AND HOUR OR TWO AFTER
MIDNIGHT...AND LAST UNTIL AROUND 9 AM THURSDAY MORNING IN SOME
AREAS. THE EXTENDED DURATION OF THESE SUB-FREEZING TEMPERATURES
WILL BE PARTICULARLY DETRIMENTAL TO TENDER VEGETATION AND FRUIT
TREES.

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
121130-
/O.CON.KMPX.FZ.W.0005.120412T0600Z-120412T1400Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...
LITTLE FALLS...PRINCETON...MORA...MORRIS...GLENWOOD...ST. CLOUD...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MADISON...BENSON...
MONTEVIDEO...WILLMAR...LITCHFIELD...MONTICELLO...MINNEAPOLIS...
BLAINE...ST. PAUL...STILLWATER...GRANITE FALLS...OLIVIA...
HUTCHINSON...GAYLORD...CHASKA...SHAKOPEE...BURNSVILLE...
REDWOOD FALLS...NEW ULM...ST. PETER...LE SUEUR...FARIBAULT...
RED WING...ST. JAMES...MANKATO...WASECA...OWATONNA...FAIRMONT...
BLUE EARTH...ALBERT LEA...AMERY...BALSAM LAKE...RICE LAKE...
BARRON...LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...
PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...PEPIN...
CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
1020 PM CDT WED APR 11 2012

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THURSDAY...

* TIMING...FROM 1 AM THROUGH 9 AM THURSDAY.

* TEMPERATURES...SUB-FREEZING TEMPERATURES ARE LIKELY AGAIN 
  TONIGHT...WITH LOWS FROM 24 TO 30 DEGREES. READINGS IN THE 
  MIDDLE 20S ARE MOST LIKELY ACROSS CENTRAL MINNESOTA AND WEST 
  CENTRAL WISCONSIN. 

* IMPACTS...FRUIT TREES AND YOUNG VEGETATION WILL BE AT RISK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$
194 
WWUS73 KMPX 120844
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
344 AM CDT THU APR 12 2012

...SUB-FREEZING TEMPERATURES CONTINUE THIS MORNING...

.A FREEZING WARNING REMAINS IN EFFECT FOR ALL OF CENTRAL AND
SOUTH CENTRAL MINNESOTA AND WEST CENTRAL WISCONSIN. TEMPERATURES 
CURRENTLY RANGE IN THE UPPER 20S TO LOWER 30S ACROSS THE WARNING
AREA...AND WILL REMAIN BELOW FREEZING UNTIL AROUND 9 AM THIS
MORNING. THESE SUB-FREEZING TEMPERATURES WILL BE PARTICULARLY
DETRIMENTAL TO TENDER VEGETATION AND FRUIT TREES.

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
121400-
/O.CON.KMPX.FZ.W.0005.000000T0000Z-120412T1400Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...
LITTLE FALLS...PRINCETON...MORA...MORRIS...GLENWOOD...ST. CLOUD...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MADISON...BENSON...
MONTEVIDEO...WILLMAR...LITCHFIELD...MONTICELLO...MINNEAPOLIS...
BLAINE...ST. PAUL...STILLWATER...GRANITE FALLS...OLIVIA...
HUTCHINSON...GAYLORD...CHASKA...SHAKOPEE...BURNSVILLE...
REDWOOD FALLS...NEW ULM...ST. PETER...LE SUEUR...FARIBAULT...
RED WING...ST. JAMES...MANKATO...WASECA...OWATONNA...FAIRMONT...
BLUE EARTH...ALBERT LEA...AMERY...BALSAM LAKE...RICE LAKE...
BARRON...LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...
PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...PEPIN...
CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
344 AM CDT THU APR 12 2012

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...

* TIMING...NOW THROUGH 9 AM TODAY.

* TEMPERATURES...SUB-FREEZING TEMPERATURES WILL CONTINUE THIS
  MORNING UNTIL AROUND 9 AM. 

* IMPACTS...FRUIT TREES...FLOWERS...AND YOUNG VEGETATION WILL BE
  AT RISK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

JRB
708 
WWUS73 KMPX 121358
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
ISSUED BY NATIONAL WEATHER SERVICE LA CROSSE WI
858 AM CDT THU APR 12 2012

...FREEZE WARNING EXPIRING AT 9 AM...

.AFTER A MORNING OF FREEZING TEMPERATURES AND AREAS OF
FROST...TEMPERATURES WERE WARMING QUICKLY THIS MORNING. HIGHS WILL
TOP OUT AROUND 60 DEGREES.

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
121500-
/O.EXP.KMPX.FZ.W.0005.000000T0000Z-120412T1400Z/
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
INCLUDING THE CITIES OF...ALEXANDRIA...LONG PRAIRIE...
LITTLE FALLS...PRINCETON...MORA...MORRIS...GLENWOOD...ST. CLOUD...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...MADISON...BENSON...
MONTEVIDEO...WILLMAR...LITCHFIELD...MONTICELLO...MINNEAPOLIS...
BLAINE...ST. PAUL...STILLWATER...GRANITE FALLS...OLIVIA...
HUTCHINSON...GAYLORD...CHASKA...SHAKOPEE...BURNSVILLE...
REDWOOD FALLS...NEW ULM...ST. PETER...LE SUEUR...FARIBAULT...
RED WING...ST. JAMES...MANKATO...WASECA...OWATONNA...FAIRMONT...
BLUE EARTH...ALBERT LEA...AMERY...BALSAM LAKE...RICE LAKE...
BARRON...LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...
PRESCOTT...MENOMONIE...BOYCEVILLE...DURAND...PEPIN...
CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
858 AM CDT THU APR 12 2012

...FREEZE WARNING WILL EXPIRE AT 9 AM CDT THIS MORNING...

FREEZING TEMPERATURES AND AREAS OF FROST WERE FOUND ACROSS THE
AREA EARLY THIS MORNING...BUT TEMPERATURES WERE QUICKLY WARMING
AND THE FREEZING WARNING WILL BE ALLOWED TO EXPIRE.

$$

RIECK

Nearby

Freeze Warnings in Minnesota, 2012Freeze Warnings in Wisconsin, 2012Every freeze warning in 2012

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.