Alert archive / Wisconsin / Freeze Warnings in 2012

Freeze Warning 4, NWS Milwaukee, WI

April 11, 20129 counties in Wisconsin

NWS Milwaukee, WI issued this freeze warning at Apr 11, 2012, 3:02 PM CDT for 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, 3:02 PM CDT (20:02 UTC)
In effect from
Apr 12, 2012, 1:00 AM CDT
Expired
Apr 12, 2012, 8:45 AM CDT
In force
8 hr
Issued by
NWS Milwaukee, WI

Counties Columbia County, WI, Dane County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Lafayette County, WI, Marquette County, WI, Rock County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 86 km from the middle of the area, began a volume at 20:06 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.0 hours before the alert went out and 187 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, Green Bay/Straub, WI 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, Green Bay/Straub, WI at 12:00Z on 2012-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
1055 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
214 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.

706 
WWUS73 KMKX 112002
NPWMKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
302 PM CDT WED APR 11 2012

...MORE COLD TEMPERATURES EXPECTED TONIGHT...

.HIGH PRESSURE MOVING ACROSS THE REGION TONIGHT WILL BRING LIGHT
TO CALM WINDS AND CLEAR SKIES. THIS WILL ALLOW TEMPERATURES TO
BECOME COLD ONCE AGAIN...ESPECIALLY ACROSS SOUTH CENTRAL
WISCONSIN. AREAS OF FROST ARE ALSO EXPECTED.

WIZ046-047-056-057-062-063-067>069-120415-
/O.NEW.KMKX.FZ.W.0004.120412T0600Z-120412T1500Z/
MARQUETTE-GREEN LAKE-SAUK-COLUMBIA-IOWA-DANE-LAFAYETTE-GREEN-ROCK-
INCLUDING THE CITIES OF...MONTELLO...BERLIN...BARABOO...PORTAGE...
WISCONSIN DELLS...DODGEVILLE...MADISON...DARLINGTON...MONROE...
JANESVILLE...BELOIT
302 PM CDT WED APR 11 2012

...FREEZE WARNING IN EFFECT FROM 1 AM TO 10 AM CDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A
FREEZE WARNING...WHICH IS IN EFFECT FROM 1 AM TO 10 AM CDT
THURSDAY. 

* TIMING...TEMPERATURES SHOULD FALL BELOW FREEZING BY 1 AM CDT
  THURSDAY...WITH LOWS OF 28 DEGREES OR LESS BY SUNRISE...ALONG
  WITH AREAS OF FROST. TEMPERATURES SHOULD RISE ABOVE FREEZING BY
  10 AM CDT THURSDAY.

* TEMPERATURE...LOWS OF 28 DEGREES OR LESS ARE EXPECTED BY SUNRISE
  ACROSS SOUTH CENTRAL WISCONSIN.

* IMPACTS...TEMPERATURES OF 28 DEGREES OR LESS CAN KILL SENSITIVE
  VEGETATION...INCLUDING PLANTS AND FLOWERS. THIS VEGETATION
  SHOULD BE COVERED OR BROUGHT INDOORS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
WOOD
4 follow-up statements
614 
WWUS73 KMKX 120229
NPWMKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
929 PM CDT WED APR 11 2012

...MORE COLD TEMPERATURES EXPECTED TONIGHT...

.HIGH PRESSURE MOVING ACROSS THE REGION TONIGHT WILL BRING CALM
WINDS AND CLEAR SKIES. THIS WILL ALLOW TEMPERATURES TO BECOME COLD
ONCE AGAIN...ESPECIALLY ACROSS SOUTH CENTRAL WISCONSIN. AREAS OF
FROST ARE ALSO EXPECTED.

WIZ046-047-056-057-062-063-067>069-121030-
/O.CON.KMKX.FZ.W.0004.120412T0600Z-120412T1500Z/
MARQUETTE-GREEN LAKE-SAUK-COLUMBIA-IOWA-DANE-LAFAYETTE-GREEN-ROCK-
INCLUDING THE CITIES OF...MONTELLO...BERLIN...BARABOO...PORTAGE...
WISCONSIN DELLS...DODGEVILLE...MADISON...DARLINGTON...MONROE...
JANESVILLE...BELOIT
929 PM CDT WED APR 11 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 10 AM CDT
THURSDAY...

A FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 10 AM CDT
THURSDAY. 

* TIMING...TEMPERATURES SHOULD FALL BELOW FREEZING BY 1 AM CDT
  THURSDAY...WITH LOWS OF 28 DEGREES OR LESS BY SUNRISE...ALONG
  WITH AREAS OF FROST. 

* TEMPERATURE...LOWS OF 28 DEGREES OR LESS ARE EXPECTED BY 
  SUNRISE ACROSS SOUTH CENTRAL WISCONSIN. 

* IMPACTS...TEMPERATURES OF 28 DEGREES OR LESS CAN KILL 
  SENSITIVE VEGETATION...INCLUDING PLANTS AND FLOWERS. THIS 
  VEGETATION SHOULD BE COVERED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GEHRING
800 
WWUS73 KMKX 120904
NPWMKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
404 AM CDT THU APR 12 2012

...SOME LOCATIONS WILL EXPERIENCE SUB-FREEZING TEMPERATURES EARLY
THIS MORNING...

.NEARBY COLD HIGH PRESSURE HAS RESULTED IN LIGHT WINDS AND CLEAR
SKIES DURING THE NIGHT. THESE CONDITIONS HAVE ALLOWED TEMPERATURES
TO FALL TO AROUND OR SLIGHTLY BELOW FREEZING EARLY THIS MORNING.
THIS COLD TEMPERATURES WILL CONTINUE UNTIL AROUND 8 AM CDT BEFORE
RISING ABOVE FREEZING. AREAS OF FROST ARE ALSO EXPECTED.

WIZ046-047-056-057-062-063-067>069-121500-
/O.CON.KMKX.FZ.W.0004.000000T0000Z-120412T1500Z/
MARQUETTE-GREEN LAKE-SAUK-COLUMBIA-IOWA-DANE-LAFAYETTE-GREEN-ROCK-
INCLUDING THE CITIES OF...MONTELLO...BERLIN...BARABOO...PORTAGE...
WISCONSIN DELLS...DODGEVILLE...MADISON...DARLINGTON...MONROE...
JANESVILLE...BELOIT
404 AM CDT THU APR 12 2012

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING. 

* TIMING...TEMPERATURES WILL REMAIN NEAR OR SLIGHTLY BELOW
  FREEZING THROUGH THE EARLY MORNING. 

* TEMPERATURE...WILL FALL TO BETWEEN 28 AND 32 DEGREES OVER MOST
  OF THE AREA. 

* IMPACTS...TEMPERATURES OF 28 DEGREES OR LESS CAN KILL 
  SENSITIVE VEGETATION...INCLUDING PLANTS AND FLOWERS. THIS 
  VEGETATION SHOULD BE COVERED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
MBK
806 
WWUS73 KMKX 121128
NPWMKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
628 AM CDT THU APR 12 2012

...SOME LOCATIONS WILL EXPERIENCE SUB-FREEZING TEMPERATURES EARLY
THIS MORNING...

.NEARBY COLD HIGH PRESSURE HAS RESULTED IN LIGHT WINDS AND CLEAR
SKIES DURING THE NIGHT. THESE CONDITIONS HAVE ALLOWED
TEMPERATURES TO FALL TO AROUND OR SLIGHTLY BELOW FREEZING EARLY
THIS MORNING. THIS COLD TEMPERATURES WILL CONTINUE UNTIL AROUND
8 AM CDT BEFORE RISING ABOVE FREEZING. AREAS OF FROST ARE ALSO
EXPECTED.

WIZ062-063-067>069-121230-
/O.CAN.KMKX.FZ.W.0004.000000T0000Z-120412T1500Z/
IOWA-DANE-LAFAYETTE-GREEN-ROCK-
INCLUDING THE CITIES OF...DODGEVILLE...MADISON...DARLINGTON...
MONROE...JANESVILLE...BELOIT
628 AM CDT THU APR 12 2012

...FREEZE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS CANCELLED
THE FREEZE WARNING. 

A HARD FREEZE IS NOT EXPECTED EARLY THIS MORNING AS TEMPERATURES
ARE REMAINING ABOVE 28 DEGREES. HENCE THE FREEZE WARNING HAS BEEN
CANCELLED. 

PATCHY FROST IS STILL EXPECTED THROUGH 9 AM CDT.

$$

WIZ046-047-056-057-121500-
/O.CON.KMKX.FZ.W.0004.000000T0000Z-120412T1500Z/
MARQUETTE-GREEN LAKE-SAUK-COLUMBIA-
INCLUDING THE CITIES OF...MONTELLO...BERLIN...BARABOO...PORTAGE...
WISCONSIN DELLS
628 AM CDT THU APR 12 2012

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING. 

* TIMING...TEMPERATURES WILL REMAIN NEAR OR SLIGHTLY BELOW 
  FREEZING THROUGH THE EARLY MORNING. 

* TEMPERATURE...BETWEEN 27 AND 32 DEGREES THROUGH THE EARLY
  MORNING.

* IMPACTS...TEMPERATURES OF 28 DEGREES OR LESS CAN KILL 
  SENSITIVE VEGETATION...INCLUDING PLANTS AND FLOWERS. THIS 
  VEGETATION SHOULD BE COVERED OR BROUGHT INDOORS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
MBK
924 
WWUS73 KMKX 121345
NPWMKX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
845 AM CDT THU APR 12 2012

...TEMPERATURES ABOVE FREEZING...

.TEMPERATURES ACROSS THE AREA HAVE RISEN ABOVE FREEZING QUICKLY
WITH THE ONSET OF DAYTIME HEATING. THUS...THE FREEZE WARNING HAS
BEEN CANCELLED.

WIZ046-047-056-057-121445-
/O.CAN.KMKX.FZ.W.0004.000000T0000Z-120412T1500Z/
MARQUETTE-GREEN LAKE-SAUK-COLUMBIA-
INCLUDING THE CITIES OF...MONTELLO...BERLIN...BARABOO...PORTAGE...
WISCONSIN DELLS
845 AM CDT THU APR 12 2012

...FREEZE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS CANCELLED
THE FREEZE WARNING. 

TEMPERATURES ACROSS THE AREA HAVE RISEN ABOVE FREEZING QUICKLY
WITH THE ONSET OF DAYTIME HEATING. THUS...THE FREEZE WARNING HAS
BEEN CANCELLED.

$$
WOOD

Nearby

Freeze 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.