Alert archive / Minnesota / Heat Advisories in 2021
Heat Advisory 3, NWS Twin Cities, MN
NWS Twin Cities, MN issued this heat advisory at Jul 27, 2021, 2:53 AM CDT for 27 counties in Minnesota. It took effect at Jul 27, 2021, 1:00 PM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 27, 2021, 2:53 AM CDT (07:53 UTC)
- In effect from
- Jul 27, 2021, 1:00 PM CDT
- Expired
- Jul 27, 2021, 9:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Twin Cities, MN
All 27 counties
Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Dakota County, MN, Faribault County, MN, Hennepin County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Swift County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 61 km from the middle of the area, began a volume at 07:56 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, 7.9 hours before the alert went out and 58 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.
- Mixed-layer CAPE
- 1670 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1398 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 146 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 5.9
The text
As transmitted.
956 WWUS73 KMPX 270753 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 253 AM CDT Tue Jul 27 2021 MNZ054>062-064>070-073>077-082>084-091-092-271600- /O.NEW.KMPX.HT.Y.0003.210727T1800Z-210728T0200Z/ /O.EXT.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ Lac Qui Parle-Swift-Chippewa-Kandiyohi-Meeker-Wright-Hennepin- Anoka-Ramsey-Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott- Dakota-Redwood-Brown-Nicollet-Le Sueur-Rice-Watonwan-Blue Earth- Waseca-Martin-Faribault- Including the cities of Madison, Benson, Montevideo, Willmar, Litchfield, Monticello, Minneapolis, Blaine, St Paul, Granite Falls, Olivia, Hutchinson, Gaylord, Chanhassen, Chaska, Victoria, Shakopee, Hastings, Redwood Falls, New Ulm, St Peter, Le Sueur, Faribault, St James, Mankato, Waseca, Fairmont, and Blue Earth 253 AM CDT Tue Jul 27 2021 ...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS EVENING... ...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH WEDNESDAY EVENING... * WHAT...For the Heat Advisory, heat index values up to 102 expected. For the Excessive Heat Watch, dangerously hot conditions with heat index values up to 109 possible. * WHERE...Portions of central, east central, south central, southwest and west central Minnesota. * WHEN...For the Heat Advisory, from 1 PM this afternoon to 9 PM CDT this evening. For the Excessive Heat Watch, from 9 PM CDT this evening through Wednesday evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Low temperatures in the low to mid 70s Tuesday night will allow for little relief from the heat overnight, with the warmest conditions expected Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air- conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes. && $$ MNZ047>049-051-063-085-093-271600- /O.EXT.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ Stevens-Pope-Stearns-Sherburne-Washington-Steele-Freeborn- Including the cities of Morris, Glenwood, St Cloud, Elk River, Stillwater, Owatonna, and Albert Lea 253 AM CDT Tue Jul 27 2021 ...EXCESSIVE HEAT WATCH NOW IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 104 possible. * WHERE...Stearns, Stevens, Pope, Washington, Steele, Sherburne and Freeborn Counties. * WHEN...From this evening through Wednesday evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Low temperatures in the low to mid 70s Tuesday night will allow for little relief from the heat overnight, with the warmest conditions expected Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air- conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes. && $$ TDH
2 follow-up statements
494 WWUS73 KMPX 270803 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 303 AM CDT Tue Jul 27 2021 MNZ063-271615- /O.EXA.KMPX.HT.Y.0003.210727T1800Z-210728T0200Z/ /O.CON.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ Washington- Including the city of Stillwater 303 AM CDT Tue Jul 27 2021 ...HEAT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS EVENING... ...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... * WHAT...For the Heat Advisory, heat index values up to 98 expected. For the Excessive Heat Watch, dangerously hot conditions with heat index values up to 107 possible. * WHERE...Washington County. * WHEN...For the Heat Advisory, from 1 PM this afternoon to 9 PM CDT this evening. For the Excessive Heat Watch, from this evening through Wednesday evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Low temperatures in the low to mid 70s Tuesday night will allow for little relief from the heat overnight, with the warmest conditions expected Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air- conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes. && $$ MNZ054>062-064>070-073>077-082>084-091-092-271615- /O.CON.KMPX.HT.Y.0003.210727T1800Z-210728T0200Z/ /O.CON.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ Lac Qui Parle-Swift-Chippewa-Kandiyohi-Meeker-Wright-Hennepin- Anoka-Ramsey-Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott- Dakota-Redwood-Brown-Nicollet-Le Sueur-Rice-Watonwan-Blue Earth- Waseca-Martin-Faribault- Including the cities of Madison, Benson, Montevideo, Willmar, Litchfield, Monticello, Minneapolis, Blaine, St Paul, Granite Falls, Olivia, Hutchinson, Gaylord, Chanhassen, Chaska, Victoria, Shakopee, Hastings, Redwood Falls, New Ulm, St Peter, Le Sueur, Faribault, St James, Mankato, Waseca, Fairmont, and Blue Earth 303 AM CDT Tue Jul 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM CDT THIS EVENING... ...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... * WHAT...For the Heat Advisory, heat index values up to 102 expected. For the Excessive Heat Watch, dangerously hot conditions with heat index values up to 109 possible. * WHERE...Portions of central, east central, south central, southwest and west central Minnesota. * WHEN...For the Heat Advisory, from 1 PM this afternoon to 9 PM CDT this evening. For the Excessive Heat Watch, from this evening through Wednesday evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Low temperatures in the low to mid 70s Tuesday night will allow for little relief from the heat overnight, with the warmest conditions expected Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air- conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes. && $$ MNZ047>049-051-085-093-271615- /O.CON.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ Stevens-Pope-Stearns-Sherburne-Steele-Freeborn- Including the cities of Morris, Glenwood, St Cloud, Elk River, Owatonna, and Albert Lea 303 AM CDT Tue Jul 27 2021 ...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 104 possible. * WHERE...Stearns, Stevens, Pope, Steele, Sherburne and Freeborn Counties. * WHEN...From this evening through Wednesday evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Low temperatures in the low to mid 70s Tuesday night will allow for little relief from the heat overnight, with the warmest conditions expected Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Be prepared to drink plenty of fluids, stay in an air- conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes. && $$ TDH
623 WWUS73 KMPX 272036 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 336 PM CDT Tue Jul 27 2021 MNZ060>063-068>070-280445- /O.UPG.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ /O.NEW.KMPX.EH.W.0002.210728T0200Z-210729T0200Z/ /O.CON.KMPX.HT.Y.0003.000000T0000Z-210728T0200Z/ Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota- Including the cities of Minneapolis, Blaine, St Paul, Stillwater, Chanhassen, Chaska, Victoria, Shakopee, and Hastings 336 PM CDT Tue Jul 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...EXCESSIVE HEAT WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 PM CDT WEDNESDAY... * WHAT...For the Excessive Heat Warning, warm overnight, and then dangerously hot conditions Wednesday with heat index values up to 105 expected. For the Heat Advisory, heat index values up to 101. * WHERE...Hennepin, Anoka, Ramsey, Washington, Carver, Scott and Dakota Counties. * WHEN...For the Excessive Heat Warning, from 9 PM this evening to 9 PM CDT Wednesday. For the Heat Advisory, until 9 PM CDT this evening. * IMPACTS...Potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Low temperatures in the low to mid 70s over night will allow for little relief from the heat overnight, with the warmest conditions expected Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MNZ059-066-067-075-076-083-280445- /O.UPG.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ /O.NEW.KMPX.EH.W.0002.210728T1500Z-210729T0200Z/ /O.CON.KMPX.HT.Y.0003.000000T0000Z-210728T0200Z/ Wright-McLeod-Sibley-Nicollet-Le Sueur-Blue Earth- Including the cities of Monticello, Hutchinson, Gaylord, St Peter, Le Sueur, and Mankato 336 PM CDT Tue Jul 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TO 9 PM CDT WEDNESDAY... * WHAT...For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 106 expected. For the Heat Advisory, heat index values up to 103. * WHERE...Wright, McLeod, Sibley, Nicollet, Le Sueur and Blue Earth Counties. * WHEN...For the Excessive Heat Warning, from 10 AM to 9 PM CDT Wednesday. For the Heat Advisory, until 9 PM CDT this evening. * IMPACTS...Potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MNZ051-280445- /O.UPG.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ /O.NEW.KMPX.EH.W.0002.210728T1500Z-210729T0200Z/ Sherburne- Including the city of Elk River 336 PM CDT Tue Jul 27 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TO 9 PM CDT WEDNESDAY... * WHAT...Dangerously hot conditions with heat index values up to 105 expected. * WHERE...Sherburne County. * WHEN...From 10 AM to 9 PM CDT Wednesday. * IMPACTS...Potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MNZ054>058-064-065-073-074-077-082-084-091-092-280445- /O.UPG.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ /O.NEW.KMPX.HT.Y.0004.210728T1500Z-210729T0200Z/ /O.CON.KMPX.HT.Y.0003.000000T0000Z-210728T0200Z/ Lac Qui Parle-Swift-Chippewa-Kandiyohi-Meeker-Yellow Medicine- Renville-Redwood-Brown-Rice-Watonwan-Waseca-Martin-Faribault- Including the cities of Madison, Benson, Montevideo, Willmar, Litchfield, Granite Falls, Olivia, Redwood Falls, New Ulm, Faribault, St James, Waseca, Fairmont, and Blue Earth 336 PM CDT Tue Jul 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 9 PM CDT WEDNESDAY... * WHAT...For the first Heat Advisory, heat index values up to 103. For the second Heat Advisory, heat index values up to 104 expected. * WHERE...Portions of central, south central, southwest and west central Minnesota. * WHEN...For the first Heat Advisory, until 9 PM CDT this evening. For the second Heat Advisory, from 10 AM to 9 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MNZ047>049-085-093-280445- /O.UPG.KMPX.EH.A.0001.210728T0200Z-210729T0200Z/ /O.NEW.KMPX.HT.Y.0004.210728T1500Z-210729T0200Z/ Stevens-Pope-Stearns-Steele-Freeborn- Including the cities of Morris, Glenwood, St Cloud, Owatonna, and Albert Lea 336 PM CDT Tue Jul 27 2021 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 9 PM CDT WEDNESDAY... * WHAT...Heat index values up to 102 expected. * WHERE...Stevens, Pope, Stearns, Steele and Freeborn Counties. * WHEN...From 10 AM to 9 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MNZ044-045-050-052-053-078-WIZ023>026-028-280445- /O.NEW.KMPX.HT.Y.0004.210728T1500Z-210729T0200Z/ Mille Lacs-Kanabec-Benton-Isanti-Chisago-Goodhue-St. Croix-Pierce- Dunn-Pepin-Eau Claire- Including the cities of Princeton, Mora, Sauk Rapids, Cambridge, Center City, Red Wing, Hudson, River Falls, Menomonie, Durand, and Eau Claire 336 PM CDT Tue Jul 27 2021 ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 9 PM CDT WEDNESDAY... * WHAT...Heat index values up to 102 expected. * WHERE...Portions of west central Wisconsin and central, east central and southeast Minnesota. * WHEN...From 10 AM to 9 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ jrb
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 3:59 AM CDT | Special Weather Statement | MPX | Mille Lacs | 46 min |
| Jul 27, 3:36 PM CDT | Excessive Heat Warning | MPX | Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 26 more | 29 hr |
| Jul 27, 3:36 PM CDT | Heat Advisory | MPX | Benton, Brown, Chippewa, Chisago, Douglas, Faribault and 22 more | 29 hr |
Nearby
Heat Advisories in Minnesota, 2021Every heat advisory in 2021
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.