Alert archive / Wisconsin / Frost Advisories in 2011

Frost Advisory 2, NWS Twin Cities, MN

May 16, 20119 counties in Wisconsin; 9 counties in Minnesota

NWS Twin Cities, MN issued this frost advisory at May 16, 2011, 5:53 PM CDT for 9 counties in Wisconsin; 9 counties in Minnesota. It took effect at May 17, 2011, 3:00 AM CDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 16, 2011, 5:53 PM CDT (22:53 UTC)
In effect from
May 17, 2011, 3:00 AM CDT
Expired
May 17, 2011, 7:00 AM CDT
In force
4 hr
Issued by
NWS Twin Cities, MN

Counties Anoka County, MN, Benton County, MN, Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Morrison County, MN, Sherburne County, MN, Washington 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), 87 km from the middle of the area, began a volume at 22:54 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, 10.9 hours before the alert went out and 89 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 2011-05-16Temperature 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 2011-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -117 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
2188 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-117 m²/s²
0-3 km storm-relative helicity
-90 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.

152 
WWUS73 KMPX 162253
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
553 PM CDT MON MAY 16 2011

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

.A FROST ADVISORY HAS BEEN ISSUED FOR LATE TONIGHT FOR PORTIONS
OF CENTRAL AND EAST CENTRAL MINNESOTA...AS WELL AS WEST CENTRAL
WISCONSIN. WINDS WILL DECREASE ACROSS THE AREA... AND BE NEARLY
CALM. WITH CLEAR SKIES...TEMPERATURES WILL DROP INTO THE LOWER AND
MID 30S LATE TONIGHT.

IN MINNESOTA...SOME CITIES INCLUDE LITTLE FALLS... SAUK RAPIDS...
CAMBRIDGE... MILACA... ELK RIVER... HAM LAKE... MORA... FOREST
LAKE AND STILLWATER. SOME CITIES IN WISCONSIN INCLUDE RICE LAKE...
LADYSMITH... CHIPPEWA FALLS... EAU CLAIRE... AND RIVER FALLS.

IT IS SUGGESTED THAT TENDER VEGETATION BE PROTECTED.


MNZ043>045-050>053-061-063-WIZ014>016-023>028-170600-
/O.NEW.KMPX.FR.Y.0002.110517T0800Z-110517T1200Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-ANOKA-
WASHINGTON-POLK-BARRON-RUSK-ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-
EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...BLAINE...
STILLWATER...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...PRESCOTT...
MENOMONIE...BOYCEVILLE...DURAND...PEPIN...CHIPPEWA FALLS...
BLOOMER...EAU CLAIRE...ALTOONA
553 PM CDT MON MAY 16 2011

...FROST ADVISORY IN EFFECT FROM 3 AM TO 7 AM CDT TUESDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 7 AM CDT
TUESDAY. 

* TEMPERATURES...LOWS TONIGHT WILL DROP INTO THE LOWER AND MIDDLE 30S.

* WINDS...WILL DECREASE THIS EVENING AND BE NEARLY CALM FOR SEVERAL
  HOURS LATE TONIGHT.

* FROST IS ANTICIPATED ACROSS MUCH OF WEST CENTRAL WISCONSIN AND
  PORTIONS OF EAST CENTRAL MINNESOTA. THIS INCLUDES THE NORTHERN
  AND EASTERN SUBURBS OF THE TWIN CITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
TDK
1 follow-up statement
111 
WWUS73 KMPX 170441
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1141 PM CDT MON MAY 16 2011

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

.A FROST ADVISORY REMAINS IN EFFECT FOR LATE TONIGHT FOR PORTIONS OF
CENTRAL AND EAST CENTRAL MINNESOTA...AS WELL AS WEST CENTRAL
WISCONSIN. WINDS WILL BE CALM IN SOME AREAS...AND ONLY ABOUT 5
MPH IN OTHER AREAS. WITH CLEAR SKIES...TEMPERATURES WILL DROP
INTO THE LOWER AND MID 30S LATE TONIGHT.

IN MINNESOTA...SOME CITIES INCLUDE LITTLE FALLS... SAUK RAPIDS...
CAMBRIDGE... MILACA... ELK RIVER... HAM LAKE... MORA... FOREST
LAKE AND STILLWATER. SOME CITIES IN WISCONSIN INCLUDE RICE LAKE...
LADYSMITH... CHIPPEWA FALLS... EAU CLAIRE... AND RIVER FALLS.

IT IS SUGGESTED THAT TENDER VEGETATION BE PROTECTED.

MNZ043>045-050>053-061-063-WIZ014>016-023>028-171200-
/O.CON.KMPX.FR.Y.0002.110517T0800Z-110517T1200Z/
MORRISON-MILLE LACS-KANABEC-BENTON-SHERBURNE-ISANTI-CHISAGO-ANOKA-
WASHINGTON-POLK-BARRON-RUSK-ST. CROIX-PIERCE-DUNN-PEPIN-CHIPPEWA-
EAU CLAIRE-
INCLUDING THE CITIES OF...LITTLE FALLS...PRINCETON...MORA...
FOLEY...ELK RIVER...CAMBRIDGE...CENTER CITY...BLAINE...
STILLWATER...AMERY...BALSAM LAKE...RICE LAKE...BARRON...
LADYSMITH...HUDSON...NEW RICHMOND...RIVER FALLS...PRESCOTT...
MENOMONIE...BOYCEVILLE...DURAND...PEPIN...CHIPPEWA FALLS...
BLOOMER...EAU CLAIRE...ALTOONA
1141 PM CDT MON MAY 16 2011

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 7 AM CDT
TUESDAY...

A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 7 AM CDT TUESDAY.

* TEMPERATURES...LOWS TONIGHT WILL DROP INTO THE LOWER AND 
  MIDDLE 30S.

* WINDS...WILL BE LESS THAN 5 MPH IN MOST AREAS.

* FROST IS ANTICIPATED ACROSS MUCH OF WEST CENTRAL WISCONSIN AND 
  PORTIONS OF EAST CENTRAL MINNESOTA. THIS INCLUDES THE NORTHERN 
  AND EASTERN SUBURBS OF THE TWIN CITIES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
TDK

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.