Alert archive / South Dakota / Heat Advisories in 2021
Heat Advisory 4, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this heat advisory at Jul 3, 2021, 2:15 PM CDT for 24 counties in South Dakota; 4 counties in Minnesota; Dixon County, Nebraska. It took effect at Jul 4, 2021, 12:00 PM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 3, 2021, 2:15 PM CDT (19:15 UTC)
- In effect from
- Jul 4, 2021, 12:00 PM CDT
- Expired
- Jul 4, 2021, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Sioux Falls, SD
All 29 counties
Lincoln County, MN, Lyon County, MN, Pipestone County, MN, Rock County, MN, Dixon County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 60 km from the middle of the area, began a volume at 19:19 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
Aberdeen, SD (KABR), launched 12:00Z, 7.3 hours before the alert went out and 157 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1879 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
765 WWUS73 KFSD 031915 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 215 PM CDT Sat Jul 3 2021 MNZ071-072-097-098-NEZ013-SDZ038>040-050-052>071-041100- /O.NEW.KFSD.HT.Y.0004.210704T1700Z-210705T0100Z/ Lincoln-Lyon-Pipestone-Rock-Dixon-Beadle-Kingsbury-Brookings- Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner- Bon Homme-Yankton-Clay-Union- 215 PM CDT Sat Jul 3 2021 ...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM CDT SUNDAY... * WHAT...Heat index values up to 105 expected. * WHERE...Portions of central, east central, south central and southeast South Dakota, northeast Nebraska and southwest Minnesota. This includes the Tribal Lands of the Yankton Sioux Tribal Nation and the Flandreau Santee Sioux Tribal Nation. * WHEN...From noon to 8 PM CDT Sunday. * 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. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
4 follow-up statements
532 WWUS73 KFSD 040237 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 937 PM CDT Sat Jul 3 2021 MNZ071-072-097-098-NEZ013-SDZ038>040-050-052>071-041045- /O.CON.KFSD.HT.Y.0004.210704T1700Z-210705T0100Z/ Lincoln-Lyon-Pipestone-Rock-Dixon-Beadle-Kingsbury-Brookings- Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner- Bon Homme-Yankton-Clay-Union- 937 PM CDT Sat Jul 3 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM CDT SUNDAY... * WHAT...Heat index values up to 105 expected. * WHERE...Portions of central, east central, south central and southeast South Dakota, northeast Nebraska and southwest Minnesota. This includes the Tribal Lands of the Yankton Sioux Tribal Nation and the Flandreau Santee Sioux Tribal Nation. * WHEN...From noon to 8 PM CDT Sunday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
745 WWUS73 KFSD 040833 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 333 AM CDT Sun Jul 4 2021 MNZ071-072-097-098-NEZ013-SDZ038>040-050-052>071-041645- /O.CON.KFSD.HT.Y.0004.210704T1700Z-210705T0100Z/ Lincoln-Lyon-Pipestone-Rock-Dixon-Beadle-Kingsbury-Brookings- Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner- Bon Homme-Yankton-Clay-Union- 333 AM CDT Sun Jul 4 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 105 expected. * WHERE...Portions of central, east central, south central and southeast South Dakota, northeast Nebraska and southwest Minnesota. This includes the Tribal Lands of the Yankton Sioux Tribal Nation and the Flandreau Santee Sioux Tribal Nation. * WHEN...From noon today to 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. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
173 WWUS73 KFSD 041628 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 1128 AM CDT Sun Jul 4 2021 MNZ071-072-097-098-NEZ013-SDZ038>040-050-052>071-050100- /O.CON.KFSD.HT.Y.0004.210704T1700Z-210705T0100Z/ Lincoln-Lyon-Pipestone-Rock-Dixon-Beadle-Kingsbury-Brookings- Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner- Bon Homme-Yankton-Clay-Union- 1128 AM CDT Sun Jul 4 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...Heat index values up to 105 expected. * WHERE...Portions of central, east central, south central and southeast South Dakota, northeast Nebraska and southwest Minnesota. This includes the Tribal Lands of the Yankton Sioux Tribal Nation and the Flandreau Santee Sioux Tribal Nation. * WHEN...From noon today to 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
335 WWUS73 KFSD 050050 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 750 PM CDT Sun Jul 4 2021 MNZ071-072-097-098-NEZ013-SDZ038>040-050-052>071-050200- /O.EXP.KFSD.HT.Y.0004.000000T0000Z-210705T0100Z/ Lincoln-Lyon-Pipestone-Rock-Dixon-Beadle-Kingsbury-Brookings- Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison- Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner- Bon Homme-Yankton-Clay-Union- 750 PM CDT Sun Jul 4 2021 ...HEAT ADVISORY WILL EXPIRE AT 8 PM CDT THIS EVENING... Heat index values have dropped below criteria, thus the heat advisory will be allowed to expire. Temperatures will continue to fall through the evening hours, although still remaining hot through sunset. $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
Nearby
Heat Advisories in South Dakota, 2021Heat Advisories in Minnesota, 2021Heat Advisories in Nebraska, 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.