Alert archive / South Dakota / Heat Advisories in 2019
Heat Advisory 7, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this heat advisory at Jul 17, 2019, 5:19 PM CDT for 15 counties in South Dakota; 8 counties in Iowa; 4 counties in Minnesota. It took effect at Jul 18, 2019, 1:00 PM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 17, 2019, 5:19 PM CDT (22:19 UTC)
- In effect from
- Jul 18, 2019, 1:00 PM CDT
- Expired
- Jul 18, 2019, 9:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Sioux Falls, SD
All 27 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Sioux County, IA, Cottonwood County, MN, Jackson County, MN, Nobles County, MN, Rock County, MN, Aurora County, SD, Brule County, SD, Charles Mix County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Sanborn County, SD, Turner County, SD
The radar
The Sioux Falls radar (KFSD), 20 km from the middle of the area, began a volume at 22:21 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.
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sioux Falls, SD wrote its last area forecast discussion before this heat advisory went out at Jul 17, 3:20 PM CDT, 1 hour 59 minutes earlier.
Area forecast discussion, Jul 17, 3:20 PM CDT, 1 hour 59 minutes before
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</html>Hazardous weather outlook, Jul 17, 5:37 AM CDT, 11 hours 42 minutes before
Hazardous Weather Outlook National Weather Service Sioux Falls SD 537 AM CDT Wed Jul 17 2019 IAZ012-013-021-022-SDZ063>067-181045- Sioux-O'Brien-Cherokee-Buena Vista-Charles Mix-Douglas-Hutchinson- Turner-Lincoln- 537 AM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for northwest Iowa, south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. A line of strong to severe storms will be capable of producing wind gusts up to 70 to 80 mph as it moves east through mid morning. Additional isolated to scattered storms will be possible late this afternoon and evening. While confidence is low regarding exactly where storms develop, the strongest storms could produce up to tennis ball size hail and isolated tornadoes. The greatest risk of severe storms later today appears to be in northwest Iowa. In addition to the storms, hot and humid conditions could result in heat index values in excess of 100 degrees this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Hot and humid conditions are expected through Friday with heat index values possibly ranging from 100 to 105 degrees each afternoon. Periodic thunderstorms are possible again this weekend, especially on Saturday night. It is too early to determine if any of these storms will be severe, so continue to monitor your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible early this morning, and again between 5 pm and 10 pm this evening. SDZ050-057>060-181045- Gregory-Brule-Aurora-Davison-Hanson- 537 AM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Isolated to scattered storms are possible this afternoon and evening. The probability of severe weather with this activity is low. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Warm and humid conditions are expected Thursday, with heat index values ranging from 95 to 105 degrees in the afternoon. Periodic thunderstorms are possible again this weekend, especially on Saturday night. It is too early to determine if any of these storms will be severe, so continue to monitor your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ020-031-032-NEZ013-014-SDZ068>071-181045- Plymouth-Woodbury-Ida-Dixon-Dakota-Bon Homme-Yankton-Clay-Union- 537 AM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, northeast Nebraska and southeast South Dakota. .DAY ONE...Today and tonight. A line of strong to severe storms will be capable of producing wind gusts up to 70 to 80 mph as it moves east through mid morning. Additional isolated to scattered storms will be possible late this afternoon and evening. While confidence is low regarding exactly where storms develop, the strongest storms could produce up to tennis ball size hail and isolated tornadoes. The greatest risk of severe storms later today appears to be in northwest Iowa. In addition to the storms, hot and humid conditions could result in heat index values in excess of 105 degrees this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Hot and humid conditions are expected through Friday, with heat index values possibly ranging from 100 to 110 degrees each afternoon. Periodic thunderstorms are possible again this weekend, especially on Saturday night. It is too early to determine if any of these storms will be severe, so continue to monitor your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible early this morning, and again between 5 pm and 10 pm this evening. MNZ071-072-080-081-089-090-097-098-SDZ038>040-052>056-061-062-181045- Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle- Kingsbury-Brookings-Jerauld-Sanborn-Miner-Lake-Moody-McCook- Minnehaha- 537 AM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for southwest Minnesota, central South Dakota, east central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Showers and embedded thunderstorms will move across the area through mid morning. The risk of severe weather with this activity is low. Additional isolated to scattered storms will be possible late this afternoon and evening. While confidence is low regarding exactly where storms develop, the strongest storms could produce up to tennis ball size hail and isolated tornadoes. The greater risk of severe storms later today appears to be in southwest Minnesota. In addition to the storms, warm and humid conditions could result in heat index values in the 90s this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Warm and humid conditions are expected again Thursday with heat index values ranging from 95 to 105 degrees. Periodic thunderstorms are possible again this weekend, especially on Saturday night. It is too early to determine if any of these storms will be severe, so continue to monitor your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible between 5 pm and 10 pm this evening. IAZ001-014-181045- Lyon-Clay- 537 AM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for northwest Iowa. .DAY ONE...Today and tonight. A line of strong to severe storms will be capable of producing wind gusts up to 60 to 80 mph as it moves east through mid morning. Additional isolated to scattered storms will be possible late this afternoon and evening. While confidence is low regarding exactly where storms develop, the strongest storms could produce up to tennis ball size hail and isolated tornadoes. In addition to the storms, warm and humid conditions could result in heat index values of 95 to 100 degrees this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Hot and humid conditions are expected through Friday with heat index values ranging from 100 to 105 degrees each afternoon. Periodic thunderstorms are possible again this weekend, especially on Saturday night. It is too early to determine if any of these storms will be severe, so continue to monitor your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible through 10 am this morning, and again between 5 pm and 10 pm this evening. IAZ002-003-181045- Osceola-Dickinson- 537 AM CDT Wed Jul 17 2019 This Hazardous Weather Outlook is for northwest Iowa. .DAY ONE...Today and tonight. A line of strong storms will be capable of producing wind gusts up to 50 to 60 mph as it moves east through mid morning. Additional isolated to scattered storms will be possible late this afternoon and evening. While confidence is low regarding exactly where storms develop, the strongest storms could produce up to tennis ball size hail and isolated tornadoes. In addition to the storms, warm and humid conditions could result in heat index values of 95 to 100 degrees this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Hot and humid conditions are expected through Friday with heat index values ranging from 100 to 105 degrees each afternoon. Periodic thunderstorms are possible again this weekend, especially on Saturday night. It is too early to determine if any of these storms will be severe, so continue to monitor your local forecast. .SPOTTER INFORMATION STATEMENT... Spotter activation is possible through 10 am this morning, and again between 5 pm and 10 pm this evening.
In the hours before
Local storm report, Jul 17, 11:58 AM CDT, 5 hours 21 minutes before
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</html>Local storm report, Jul 17, 12:01 PM CDT, 5 hours 18 minutes before
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</html>Local storm report, Jul 17, 1:11 PM CDT, 4 hours 8 minutes before
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</html>Local storm report, Jul 17, 1:18 PM CDT, 4 hours 1 minute before
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</html>Local storm report, Jul 17, 3:32 PM CDT, 1 hour 47 minutes before
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</html>The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 4:07 AM CDT | Excessive Heat Warning | FSD | Bon Homme, Clay, Hanson, Hutchinson, Lincoln, McCook and 4 more | 66 hr |
| Jul 17, 4:07 AM CDT | Heat Advisory | FSD | Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 4 more | 9 hr |
| Jul 17, 4:09 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Gregory | 51 min |
| Jul 17, 4:32 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas, Gregory | 28 min |
| Jul 17, 4:51 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Bon Homme, Charles Mix, Davison, Douglas, Gregory and 2 more | 39 min |
| Jul 17, 5:03 AM CDT | Tornado Warning | FSD | Douglas, Hutchinson | 27 min |
| Jul 17, 5:22 AM CDT | Tornado Warning | FSD | Hutchinson | 23 min |
| Jul 17, 5:27 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Davison, Hanson, Hutchinson, McCook and 3 more | 63 min |
| Jul 17, 6:17 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, McCook, Minnehaha, Turner, Union and 1 more | 58 min |
| Jul 17, 6:20 AM CDT | Tornado Warning | FSD | Clay, Turner, Union | 25 min |
| Jul 17, 6:54 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 66 min |
| Jul 17, 7:06 AM CDT | Flash Flood Warning | FSD | Lincoln, Minnehaha | 4 hr |
| Jul 17, 7:19 AM CDT | Flash Flood Warning | FSD | Union | 116 min |
| Jul 17, 9:02 AM CDT | River Flood Warning | FSD | Lincoln, Minnehaha | 67 hr |
| Jul 17, 9:56 AM CDT | River Flood Warning | FSD | Lincoln | 21 days |
| Jul 17, 7:27 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 48 min |
| Jul 17, 8:01 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 29 min |
| Jul 17, 8:02 AM CDT | Flash Flood Warning | FSD | Ida, Woodbury | 118 min |
| Jul 17, 8:29 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 31 min |
| Jul 17, 10:52 AM CDT | River Flood Warning | FSD | Lyon | 53 hr |
| Jul 16, 10:45 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon | 25 min |
Nearby
Heat Advisories in South Dakota, 2019Heat Advisories in Iowa, 2019Heat Advisories in Minnesota, 2019Every heat advisory in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.