Alert archive / Minnesota / Excessive Heat Warnings in 2021
Excessive Heat Warning 1, NWS Twin Cities, MN
NWS Twin Cities, MN issued this excessive heat warning at Jun 9, 2021, 8:42 PM CDT for 7 counties in Minnesota. It took effect at Jun 10, 2021, 11:00 AM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 9, 2021, 8:42 PM CDT (01:42 UTC)
- In effect from
- Jun 10, 2021, 11:00 AM CDT
- Expired
- Jun 10, 2021, 8:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Twin Cities, MN
Counties Anoka County, MN, Carver County, MN, Dakota County, MN, Hennepin County, MN, Ramsey County, MN, Scott County, MN, Washington County, MN
The radar
The Minneapolis radar (KMPX), 22 km from the middle of the area, began a volume at 01:45 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, 1.7 hours before the alert went out and 25 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
- 765 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 2305 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
255 WWUS73 KMPX 100142 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 842 PM CDT Wed Jun 9 2021 MNZ060>063-068>070-100945- /O.NEW.KMPX.EH.W.0001.210610T1600Z-210611T0100Z/ /O.EXT.KMPX.HT.Y.0001.000000T0000Z-210610T1600Z/ Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota- Including the cities of Minneapolis, Blaine, St Paul, Stillwater, Chanhassen, Chaska, Victoria, Shakopee, and Hastings 842 PM CDT Wed Jun 9 2021 ...HEAT ADVISORY NOW IN EFFECT UNTIL 11 AM CDT THURSDAY... ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT THURSDAY... * WHAT...Dangerously hot conditions with heat index values up to 101 expected on Thursday afternoon and early evening. * WHERE...Hennepin, Anoka, Ramsey, Washington, Carver, Scott and Dakota Counties. * WHEN...For the Excessive Heat Warning, from 11 AM to 8 PM CDT Thursday. For the Heat Advisory, until 11 AM CDT Thursday. * IMPACTS...Extreme heat and humidity will significantly increase the 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. && $$ MNZ044-045-047>059-064>067-073>078-WIZ014-023-024-100945- /O.EXB.KMPX.HT.Y.0001.210610T1600Z-210611T0100Z/ Mille Lacs-Kanabec-Stevens-Pope-Stearns-Benton-Sherburne-Isanti- Chisago-Lac Qui Parle-Swift-Chippewa-Kandiyohi-Meeker-Wright- Yellow Medicine-Renville-McLeod-Sibley-Redwood-Brown-Nicollet- Le Sueur-Rice-Goodhue-Polk-St. Croix-Pierce- Including the cities of Princeton, Mora, Morris, Glenwood, St Cloud, Sauk Rapids, Elk River, Cambridge, Center City, Madison, Benson, Montevideo, Willmar, Litchfield, Monticello, Granite Falls, Olivia, Hutchinson, Gaylord, Redwood Falls, New Ulm, St Peter, Le Sueur, Faribault, Red Wing, Osceola, Hudson, and River Falls 842 PM CDT Wed Jun 9 2021 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT THURSDAY... * WHAT...Heat index values up to 101 expected. * WHERE...Portions of northwest and west central Wisconsin and central, east central, south central, southeast, southwest and west central Minnesota. * WHEN...From 11 AM to 8 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
2 follow-up statements
894 WWUS73 KMPX 100829 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 329 AM CDT Thu Jun 10 2021 MNZ060>063-068>070-102345- /O.CON.KMPX.EH.W.0001.210610T1600Z-210611T0100Z/ /O.CON.KMPX.HT.Y.0001.000000T0000Z-210610T1600Z/ Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota- Including the cities of Minneapolis, Blaine, St Paul, Stillwater, Chanhassen, Chaska, Victoria, Shakopee, and Hastings 329 AM CDT Thu Jun 10 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 11 AM CDT THIS MORNING... ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 101 expected on Thursday afternoon and early evening. * WHERE...Hennepin, Anoka, Ramsey, Washington, Carver, Scott and Dakota Counties. * WHEN...For the Excessive Heat Warning, from 11 AM to 8 PM CDT Thursday. For the Heat Advisory, until 11 AM CDT Thursday. * IMPACTS...Extreme heat and humidity will significantly increase the 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. && $$ MNZ041>043-102345- /O.EXA.KMPX.HT.Y.0001.210610T1600Z-210611T0100Z/ Douglas-Todd-Morrison- Including the cities of Alexandria, Long Prairie, and Little Falls 329 AM CDT Thu Jun 10 2021 ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 101 expected. * WHERE...Portions of northwest and west central Wisconsin and central, east central, south central, southeast, southwest and west central Minnesota. * WHEN...From 11 AM to 8 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MNZ044-045-047>059-064>067-073>078-WIZ014-023-024-102345- /O.CON.KMPX.HT.Y.0001.210610T1600Z-210611T0100Z/ Mille Lacs-Kanabec-Stevens-Pope-Stearns-Benton-Sherburne-Isanti- Chisago-Lac Qui Parle-Swift-Chippewa-Kandiyohi-Meeker-Wright- Yellow Medicine-Renville-McLeod-Sibley-Redwood-Brown-Nicollet- Le Sueur-Rice-Goodhue-Polk-St. Croix-Pierce- Including the cities of Princeton, Mora, Morris, Glenwood, St Cloud, Sauk Rapids, Elk River, Cambridge, Center City, Madison, Benson, Montevideo, Willmar, Litchfield, Monticello, Granite Falls, Olivia, Hutchinson, Gaylord, Redwood Falls, New Ulm, St Peter, Le Sueur, Faribault, Red Wing, Osceola, Hudson, and River Falls 329 AM CDT Thu Jun 10 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 101 expected. * WHERE...Portions of northwest and west central Wisconsin and central, east central, south central, southeast, southwest and west central Minnesota. * WHEN...From 11 AM to 8 PM CDT Thursday. * 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. && $$
086 WWUS73 KMPX 101952 NPWMPX URGENT - WEATHER MESSAGE National Weather Service Twin Cities/Chanhassen MN 252 PM CDT Thu Jun 10 2021 MNZ060>063-068>070-110100- /O.CON.KMPX.EH.W.0001.000000T0000Z-210611T0100Z/ Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota- Including the cities of Minneapolis, Blaine, St Paul, Stillwater, Chanhassen, Chaska, Victoria, Shakopee, and Hastings 252 PM CDT Thu Jun 10 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 102. * WHERE...Washington, Ramsey, Anoka, Hennepin, Dakota, Scott and Carver Counties. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MNZ041>045-047>059-064>067-073>078-WIZ014-023-024-110100- /O.CON.KMPX.HT.Y.0001.000000T0000Z-210611T0100Z/ Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns- Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa- Kandiyohi-Meeker-Wright-Yellow Medicine-Renville-McLeod-Sibley- Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Polk-St. Croix- Pierce- Including the cities of Alexandria, Long Prairie, Little Falls, Princeton, Mora, Morris, Glenwood, St Cloud, Sauk Rapids, Elk River, Cambridge, Center City, Madison, Benson, Montevideo, Willmar, Litchfield, Monticello, Granite Falls, Olivia, Hutchinson, Gaylord, Redwood Falls, New Ulm, St Peter, Le Sueur, Faribault, Red Wing, Osceola, Hudson, and River Falls 252 PM CDT Thu Jun 10 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 102. * WHERE...Portions of northwest and west central Wisconsin and central, east central, south central, southeast, southwest and west central Minnesota. * WHEN...Until 8 PM CDT this evening. * 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. && $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 7:06 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey, Washington | 24 min |
| Jun 9, 7:28 PM CDT | Special Weather Statement | MPX | Ramsey | 32 min |
| Jun 9, 7:30 PM CDT | Special Weather Statement | MPX | Benton | 30 min |
| Jun 9, 8:13 PM CDT | Special Weather Statement | MPX | Goodhue | 47 min |
| Jun 10, 4:18 AM CDT | Special Weather Statement | MPX | Douglas | 42 min |
| Jun 10, 5:00 AM CDT | Special Weather Statement | MPX | Todd | 45 min |
| Jun 10, 2:22 PM CDT | Special Weather Statement | MPX | Mille Lacs | 23 min |
Nearby
Excessive Heat Warnings in Minnesota, 2021Every excessive heat warning 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.