Alert archive / Wisconsin / Frost Advisories in 2011

Frost Advisory 3, NWS Twin Cities, MN

May 26, 20116 counties in Wisconsin; Chisago County, Kanabec County, Minnesota

NWS Twin Cities, MN issued this frost advisory at May 26, 2011, 3:42 PM CDT for 6 counties in Wisconsin; Chisago County, Kanabec County, Minnesota. It took effect at May 27, 2011, 4:00 AM CDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 26, 2011, 3:42 PM CDT (20:42 UTC)
In effect from
May 27, 2011, 4:00 AM CDT
Expired
May 27, 2011, 8:00 AM CDT
In force
4 hr
Issued by
NWS Twin Cities, MN

Counties Chisago County, MN, Kanabec 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), 133 km from the middle of the area, began a volume at 20:40 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, 8.7 hours before the alert went out and 135 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 2011-05-26Temperature 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 2011-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 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
1893 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
-13 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.

456 
WWUS73 KMPX 262042
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
342 PM CDT THU MAY 26 2011

...FROST ADVISORY LATE TONIGHT PARTS OF EAST CENTRAL MINNESOTA AND
WEST CENTRAL WISCONSIN...

.A FROST ADVISORY HAS BEEN ISSUED FOR LATE TONIGHT FOR PORTIONS
OF EAST CENTRAL MINNESOTA...AS WELL AS WEST CENTRAL WISCONSIN.
HIGH PRESSURE WILL BE IN PLACE OVER WEST CENTRAL WISCONSIN
TONIGHT WHICH WILL KEEP SKIES CLEAR ALONG WITH LIGHT WINDS. THIS
WILL ALLOW TEMPERATURES TO DROP INTO THE LOWER AND MID 30S LATE
TONIGHT...RESULTING IN AREAS OF FROST. THE ADVISORY INCLUDES THE
CITIES OF MORA...RICE LAKE...LADYSMITH...MENOMONIE...AND EAU
CLAIRE.

MNZ045-053-WIZ014>016-025-027-028-270445-
/O.NEW.KMPX.FR.Y.0003.110527T0900Z-110527T1300Z/
KANABEC-CHISAGO-POLK-BARRON-RUSK-DUNN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...MORA...CENTER CITY...AMERY...
BALSAM LAKE...RICE LAKE...BARRON...LADYSMITH...MENOMONIE...
BOYCEVILLE...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
342 PM CDT THU MAY 26 2011

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

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

* TEMPERATURE...DROPPING INTO THE LOWER AND MIDDLE 30S AFTER 3 AM. 

* IMPACTS...SENSITIVE OUTDOOR PLANTS MAY BE HARMED IF LEFT 
  UNCOVERED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
1 follow-up statement
035 
WWUS73 KMPX 270438
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1138 PM CDT THU MAY 26 2011

...FROST ADVISORY LATE TONIGHT FOR PARTS OF EAST CENTRAL MINNESOTA
AND WEST CENTRAL WISCONSIN...

.A FROST ADVISORY REMAINS IN EFFECT FOR PORTIONS OF EAST CENTRAL
MINNESOTA...AS WELL AS WEST CENTRAL WISCONSIN. HIGH PRESSURE WILL
BE IN PLACE OVER WEST CENTRAL WISCONSIN TONIGHT WHICH WILL KEEP
SKIES CLEAR ALONG WITH LIGHT WINDS. THIS WILL ALLOW TEMPERATURES
TO DROP INTO THE LOWER AND MID 30S LATE TONIGHT...RESULTING IN
AREAS OF FROST. THE ADVISORY INCLUDES THE CITIES OF MORA...RICE
LAKE...LADYSMITH...MENOMONIE...AND EAU CLAIRE.

MNZ045-053-WIZ014>016-025-027-028-271300-
/O.CON.KMPX.FR.Y.0003.110527T0900Z-110527T1300Z/
KANABEC-CHISAGO-POLK-BARRON-RUSK-DUNN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...MORA...CENTER CITY...AMERY...
BALSAM LAKE...RICE LAKE...BARRON...LADYSMITH...MENOMONIE...
BOYCEVILLE...CHIPPEWA FALLS...BLOOMER...EAU CLAIRE...ALTOONA
1138 PM CDT THU MAY 26 2011

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

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

* TEMPERATURES...DROPPING INTO THE LOWER AND MIDDLE 30S AFTER 3 
  AM.

* IMPACTS...SENSITIVE OUTDOOR PLANTS MAY BE HARMED IF LEFT 
  UNCOVERED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 26, 10:20 AM CDTRiver Flood WarningMPXDakota, Hennepin, Scott8 days
May 26, 10:20 AM CDTRiver Flood WarningMPXCarver3 days

Nearby

Frost Advisories in Wisconsin, 2011Frost Advisories in Minnesota, 2011Every frost advisory in 2011

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.