Alert archive / Wisconsin / Frost Advisories in 2017

Frost Advisory 3, NWS Twin Cities, MN

May 18, 20175 counties in Minnesota; 6 counties in Wisconsin

NWS Twin Cities, MN issued this frost advisory at May 18, 2017, 2:20 PM CDT for 5 counties in Minnesota; 6 counties in Wisconsin. It took effect at May 19, 2017, 12:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
May 18, 2017, 2:20 PM CDT (19:20 UTC)
In effect from
May 19, 2017, 12:00 AM CDT
Expired
May 19, 2017, 7:10 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, Morrison 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), 109 km from the middle of the area, began a volume at 19:23 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, 7.3 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 2017-05-18Temperature 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 2017-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -64 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
696 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-64 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

193 
WWUS73 KMPX 181920
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
220 PM CDT Thu May 18 2017

MNZ043>045-052-053-WIZ014>016-025-027-028-190330-
/O.NEW.KMPX.FR.Y.0003.170519T0500Z-170519T1300Z/
Morrison-Mille Lacs-Kanabec-Isanti-Chisago-Polk-Barron-Rusk-Dunn-
Chippewa-Eau Claire-
Including the cities of Little Falls, Princeton, Mora, Cambridge,
Center City, Osceola, Rice Lake, Ladysmith, Menomonie, 
Chippewa Falls, and Eau Claire
220 PM CDT Thu May 18 2017

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT
FRIDAY...

The National Weather Service in Twin Cities/Chanhassen has issued
a Frost Advisory, which is in effect from midnight tonight to
8 AM CDT Friday. 

* TEMPERATURE...32 to 35 degrees.

* IMPACTS...sensitive vegetation may be damaged or killed if
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
3 follow-up statements
865 
WWUS73 KMPX 190309
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
1009 PM CDT Thu May 18 2017


MNZ043>045-052-053-WIZ014>016-025-027-028-191115-
/O.CON.KMPX.FR.Y.0003.170519T0500Z-170519T1300Z/
Morrison-Mille Lacs-Kanabec-Isanti-Chisago-Polk-Barron-Rusk-Dunn-
Chippewa-Eau Claire-
Including the cities of Little Falls, Princeton, Mora, Cambridge,
Center City, Osceola, Rice Lake, Ladysmith, Menomonie, 
Chippewa Falls, and Eau Claire
1009 PM CDT Thu May 18 2017

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

* TEMPERATURE...32 to 35 degrees.

* IMPACTS...sensitive vegetation may be damaged or killed if 
  precautions are not taken. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
600 
WWUS73 KMPX 190806
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
306 AM CDT Fri May 19 2017


MNZ043>045-052-053-WIZ014>016-025-027-028-191300-
/O.CON.KMPX.FR.Y.0003.000000T0000Z-170519T1300Z/
Morrison-Mille Lacs-Kanabec-Isanti-Chisago-Polk-Barron-Rusk-Dunn-
Chippewa-Eau Claire-
Including the cities of Little Falls, Princeton, Mora, Cambridge,
Center City, Osceola, Rice Lake, Ladysmith, Menomonie, 
Chippewa Falls, and Eau Claire
306 AM CDT Fri May 19 2017

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING...

* TEMPERATURE...32 to 36 degrees.

* IMPACTS...sensitive vegetation may be damaged or killed if 
  precautions are not taken. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
854 
WWUS73 KMPX 191210
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
710 AM CDT Fri May 19 2017

...Frost advisory is cancelled...

.Temperatures are in the upper 30s and will continue to warm
throughout the day.

MNZ043>045-052-053-WIZ014>016-025-027-028-191315-
/O.CAN.KMPX.FR.Y.0003.000000T0000Z-170519T1300Z/
Morrison-Mille Lacs-Kanabec-Isanti-Chisago-Polk-Barron-Rusk-Dunn-
Chippewa-Eau Claire-
Including the cities of Little Falls, Princeton, Mora, Cambridge,
Center City, Osceola, Rice Lake, Ladysmith, Menomonie, 
Chippewa Falls, and Eau Claire
710 AM CDT Fri May 19 2017

...FROST ADVISORY IS CANCELLED...

The National Weather Service in Twin Cities/Chanhassen has
cancelled the Frost Advisory. 

Temperatures are in the upper 30s and will continue to warm
throughout the day.

$$

jrb

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:00 PM CDTSpecial Weather StatementMPXAnoka, Dakota, Ramsey30 min
May 17, 7:11 PM CDTFlash Flood WarningMPXAnoka, Hennepin, Ramsey3 hr
May 17, 7:39 PM CDTSevere Thunderstorm WarningMPXGoodhue49 min
May 17, 8:03 PM CDTSpecial Weather StatementMPXGoodhue27 min
May 17, 8:37 PM CDTSpecial Weather StatementMPXWashington53 min
May 18, 9:00 AM CDTRiver Flood WatchMPXEau Claire23 hr
May 18, 9:00 AM CDTRiver Flood WatchMPXBuffalo, Pepin23 hr
May 18, 11:02 AM CDTRiver Flood WarningMPXEau Claire4 days
May 18, 2:45 PM CDTRiver Flood WarningMPXBuffalo, Pepin6 days

Nearby

Frost Advisories in Wisconsin, 2017Frost Advisories in Minnesota, 2017Every frost advisory in 2017

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.