Alert archive / Wisconsin / Frost Advisories in 2016

Frost Advisory 5, NWS Twin Cities, MN

May 17, 20169 counties in Wisconsin; 4 counties in Minnesota

NWS Twin Cities, MN issued this frost advisory at May 17, 2016, 3:01 PM CDT for 9 counties in Wisconsin; 4 counties in Minnesota. It took effect at May 18, 2016, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
May 17, 2016, 3:01 PM CDT (20:01 UTC)
In effect from
May 18, 2016, 1:00 AM CDT
Expired
May 18, 2016, 8:00 AM CDT
In force
7 hr
Issued by
NWS Twin Cities, MN

Counties Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs 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), 108 km from the middle of the area, began a volume at 20:07 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, 8.0 hours before the alert went out and 111 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 2016-05-17Temperature 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 2016-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -81 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
2013 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-81 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

427 
WWUS73 KMPX 172001
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
301 PM CDT TUE MAY 17 2016

...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM WEDNESDAY...

MNZ044-045-052-053-WIZ014>016-023>028-180515-
/O.NEW.KMPX.FR.Y.0005.160518T0600Z-160518T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-ST. CROIX-
PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...OSCEOLA...RICE LAKE...LADYSMITH...HUDSON...
RIVER FALLS...PRESCOTT...MENOMONIE...DURAND...CHIPPEWA FALLS...
EAU CLAIRE
301 PM CDT TUE MAY 17 2016

...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 8 AM CDT
WEDNESDAY. 

* TEMPERATURE...TEMPERATURES WILL FALL INTO THE 30S AFTER
  MIDNIGHT, AND REMAIN IN THE LOW TO MID 30S THROUGH 8 AM.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
2 follow-up statements
092 
WWUS73 KMPX 180343
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1043 PM CDT TUE MAY 17 2016

MNZ044-045-052-053-WIZ014>016-023>028-181200-
/O.CON.KMPX.FR.Y.0005.160518T0600Z-160518T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-ST. CROIX-
PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...OSCEOLA...RICE LAKE...LADYSMITH...HUDSON...
RIVER FALLS...PRESCOTT...MENOMONIE...DURAND...CHIPPEWA FALLS...
EAU CLAIRE
1043 PM CDT TUE MAY 17 2016

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT WEDNESDAY...

* TEMPERATURE...THERE WILL BE SEVERAL HOURS WITH READINGS BETWEEN
  32 AND 35 DEGREES EARLY WEDNESDAY MORNING.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
433 
WWUS73 KMPX 181249
NPWMPX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
749 AM CDT WED MAY 18 2016

MNZ044-045-052-053-WIZ014>016-023>028-181400-
/O.EXP.KMPX.FR.Y.0005.000000T0000Z-160518T1300Z/
MILLE LACS-KANABEC-ISANTI-CHISAGO-POLK-BARRON-RUSK-ST. CROIX-
PIERCE-DUNN-PEPIN-CHIPPEWA-EAU CLAIRE-
INCLUDING THE CITIES OF...PRINCETON...MORA...CAMBRIDGE...
CENTER CITY...OSCEOLA...RICE LAKE...LADYSMITH...HUDSON...
RIVER FALLS...PRESCOTT...MENOMONIE...DURAND...CHIPPEWA FALLS...
EAU CLAIRE
749 AM CDT WED MAY 18 2016

...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING...

$$

Nearby

Frost Advisories in Wisconsin, 2016Frost Advisories in Minnesota, 2016Every frost advisory in 2016

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.