Alert archive / Minnesota / Heat Advisories in 2017

Heat Advisory 2, NWS Twin Cities, MN

July 17, 201730 counties in Minnesota

NWS Twin Cities, MN issued this heat advisory at Jul 17, 2017, 3:27 AM CDT for 30 counties in Minnesota. It took effect at Jul 17, 2017, 1:00 PM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Jul 17, 2017, 3:27 AM CDT (08:27 UTC)
In effect from
Jul 17, 2017, 1:00 PM CDT
Expired
Jul 17, 2017, 7:00 PM CDT
In force
6 hr
Issued by
NWS Twin Cities, MN
All 30 counties

Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Dakota County, MN, Douglas County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 76 km from the middle of the area, began a volume at 08:30 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 00:00Z, 8.5 hours before the alert went out and 73 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 00:00Z on 2017-07-17Temperature 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 00:00Z on 2017-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 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
1579 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

732 
WWUS73 KMPX 170827
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
327 AM CDT Mon Jul 17 2017

MNZ047-048-054>057-064-065-073-171700-
/O.NEW.KMPX.HT.Y.0002.170717T1800Z-170718T0000Z/
Stevens-Pope-Lac Qui Parle-Swift-Chippewa-Kandiyohi-
Yellow Medicine-Renville-Redwood-
Including the cities of Morris, Glenwood, Madison, Benson, 
Montevideo, Willmar, Granite Falls, Olivia, and Redwood Falls
327 AM CDT Mon Jul 17 2017

...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT
THIS EVENING...

The National Weather Service in Twin Cities/Chanhassen has issued
a Heat Advisory, which is in effect from 1 PM this afternoon to
7 PM CDT this evening. 

* TEMPERATURE...The combination of temperatures climbing to the
  middle to upper 90s with dewpoints in the middle 60s to around
  70 will produce heat index values in the low 100s.

* IMPACTS...The combination of hot temperatures and high humidity 
  will combine to create a situation in which heat illnesses are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids...stay in an air-conditioned
room...stay out of the sun...and check up on relatives and
neighbors.

Take extra precautions...if you work or spend time outside. When 
possible...reschedule strenuous activities to early morning or 
evening. Know the signs and symptoms of heat exhaustion and heat 
stroke. Wear light weight and loose fitting clothing when possible
and drink plenty of water.

To reduce risk during outdoor work...the occupational safety and 
health administration recommends scheduling frequent rest breaks 
in shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an 
emergency...call 9 1 1.

&&

$$
2 follow-up statements
163 
WWUS73 KMPX 171746
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
1246 PM CDT Mon Jul 17 2017

MNZ047-048-054>057-064-065-073-180000-
/O.CON.KMPX.HT.Y.0002.170717T1800Z-170718T0000Z/
Stevens-Pope-Lac Qui Parle-Swift-Chippewa-Kandiyohi-
Yellow Medicine-Renville-Redwood-
Including the cities of Morris, Glenwood, Madison, Benson, 
Montevideo, Willmar, Granite Falls, Olivia, and Redwood Falls
1246 PM CDT Mon Jul 17 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* TEMPERATURE...The combination of temperatures climbing to the 
  middle to upper 90s with dewpoints in the middle 60s to around 
  70 will produce heat index values in the low 100s. 

* IMPACTS...The combination of hot temperatures and high 
  humidity will combine to create a situation in which heat 
  illnesses are possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids...stay in an air-conditioned
room...stay out of the sun...and check up on relatives and
neighbors.

Take extra precautions...if you work or spend time outside. When
possible...reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work...the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency...call 9 1 1.

&&

$$
459 
WWUS73 KMPX 172018
NPWMPX

URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
318 PM CDT Mon Jul 17 2017

MNZ041>044-049>052-058>063-066>070-074-075-180000-
/O.EXA.KMPX.HT.Y.0002.000000T0000Z-170718T0000Z/
Douglas-Todd-Morrison-Mille Lacs-Stearns-Benton-Sherburne-Isanti-
Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-McLeod-Sibley-
Carver-Scott-Dakota-Brown-Nicollet-
Including the cities of Alexandria, Long Prairie, Little Falls, 
Princeton, St Cloud, Foley, Elk River, Cambridge, Litchfield, 
Monticello, Minneapolis, Blaine, St Paul, Stillwater, Hutchinson,
Gaylord, Chaska, Shakopee, Hastings, New Ulm, and St Peter
318 PM CDT Mon Jul 17 2017

...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

The National Weather Service in Twin Cities/Chanhassen has issued
a Heat Advisory, which is in effect until 7 PM CDT this evening. 

* TEMPERATURE...The combination of temperatures in the low to mid
  90s with dew points in the mid to upper 70s will produce heat
  index values of 95 to 105. 

* IMPACTS...The combination of hot temperatures and high 
  humidity will combine to create a situation in which heat 
  illnesses are possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids...stay in an air-conditioned
room...stay out of the sun...and check up on relatives and
neighbors.

Take extra precautions...if you work or spend time outside. When
possible...reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work...the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency...call 9 1 1.

&&

$$

MNZ047-048-054>057-064-065-073-180000-
/O.CON.KMPX.HT.Y.0002.000000T0000Z-170718T0000Z/
Stevens-Pope-Lac Qui Parle-Swift-Chippewa-Kandiyohi-
Yellow Medicine-Renville-Redwood-
Including the cities of Morris, Glenwood, Madison, Benson, 
Montevideo, Willmar, Granite Falls, Olivia, and Redwood Falls
318 PM CDT Mon Jul 17 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* TEMPERATURE...The combination of temperatures climbing to the
  upper 90s with dewpoints in the middle 60s to around 70 will
  produce heat index values of 100 to 105. 

* IMPACTS...The combination of hot temperatures and high 
  humidity will combine to create a situation in which heat 
  illnesses are possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids...stay in an air-conditioned
room...stay out of the sun...and check up on relatives and
neighbors.

Take extra precautions...if you work or spend time outside. When
possible...reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work...the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by
heat should be moved to a cool and shaded location. Heat stroke
is an emergency...call 9 1 1.

&&

$$

Borghoff

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 4:50 PM CDTSevere Thunderstorm WarningMPXTodd40 min
Jul 17, 5:24 PM CDTSevere Thunderstorm WarningMPXDouglas66 min
Jul 17, 5:29 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd61 min
Jul 17, 5:37 PM CDTTornado WarningMPXMorrison, Todd38 min
Jul 17, 5:45 PM CDTTornado WarningMPXDouglas45 min
Jul 17, 6:01 PM CDTSevere Thunderstorm WarningMPXMorrison59 min
Jul 17, 6:19 PM CDTTornado WarningMPXMorrison41 min
Jul 17, 6:27 PM CDTSevere Thunderstorm WarningMPXDouglas, Todd63 min
Jul 17, 6:40 PM CDTTornado WarningMPXDouglas, Stearns, Todd35 min
Jul 17, 6:47 PM CDTSevere Thunderstorm WarningMPXBenton, Kanabec, Mille Lacs, Morrison58 min

Nearby

Heat Advisories in Minnesota, 2017Every heat 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.