Alert archive / South Dakota / Flash Flood Warnings in 2019
Flash Flood Warning 13, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jul 17, 2019, 7:06 AM CDT for Lincoln County, Minnehaha County, South Dakota. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 17, 2019, 7:06 AM CDT (12:06 UTC)
- Expired
- Jul 17, 2019, 11:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lincoln County, SD, Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 10 km from the middle of the area, began a volume at 12:07 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 17, 7:20 AM CDT | FLASH FLOOD | 4 Nne Sioux Falls, SD | REPORTED VIA SOCIAL MEDIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 0.1 hours before the alert went out and 202 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
- 1844 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
583 WGUS53 KFSD 171206 FFWFSD SDC083-099-171500- /O.NEW.KFSD.FF.W.0013.190717T1206Z-190717T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Sioux Falls SD 706 AM CDT Wed Jul 17 2019 The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for... Southeastern Minnehaha County in southeastern South Dakota... Northwestern Lincoln County in southeastern South Dakota... * Until 1000 AM CDT. * At 705 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to one inch of rain has already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Sioux Falls, Brandon, Harrisburg, Tea and Lake Alvin State Recreation Area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. && LAT...LON 4343 9689 4364 9688 4362 9654 4341 9663 $$ Kalin
3 follow-up statements
779 WGUS73 KFSD 171347 FFSFSD Flash Flood Statement National Weather Service Sioux Falls SD 847 AM CDT Wed Jul 17 2019 SDC083-099-171500- /O.CON.KFSD.FF.W.0013.000000T0000Z-190717T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Minnehaha SD-Lincoln SD- 847 AM CDT Wed Jul 17 2019 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR SOUTHEASTERN MINNEHAHA AND NORTHWESTERN LINCOLN COUNTIES... At 845 AM CDT, local law enforcement reported flash flooding in Sioux Falls with several water rescues being conducted due to cars stalled in flooded areas. Two to three inches of rain fell in 30 to 45 minutes earlier this morning. Flash flooding is already occurring. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && LAT...LON 4343 9689 4364 9688 4362 9654 4341 9663 $$ Gillispie
244 WGUS53 KFSD 171446 FFWFSD SDC083-099-171600- /O.EXT.KFSD.FF.W.0013.000000T0000Z-190717T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Sioux Falls SD 946 AM CDT Wed Jul 17 2019 The National Weather Service in Sioux Falls has extended the * Flash Flood Warning for... Southeastern Minnehaha County in southeastern South Dakota... Northwestern Lincoln County in southeastern South Dakota... * Until 1100 AM CDT. * At 944 AM CDT, Doppler radar indicated thunderstorms producing heavy rain moving back into the warned area. Two to four inches of rain has already fallen. Flash flooding is already occurring. Additional rainfall amounts of one half to one inch are possible in the warned area with the next round of storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other drainage areas and low lying spots. Please report flooding to your local law enforcement agency when you can do so safely. && LAT...LON 4343 9689 4364 9688 4362 9654 4341 9663 $$ Gillispie
028 WGUS73 KFSD 171554 FFSFSD Flash Flood Statement National Weather Service Sioux Falls SD 1054 AM CDT Wed Jul 17 2019 SDC083-099-171603- /O.EXP.KFSD.FF.W.0013.000000T0000Z-190717T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Minnehaha SD-Lincoln SD- 1054 AM CDT Wed Jul 17 2019 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN MINNEHAHA AND NORTHWESTERN LINCOLN COUNTIES WILL EXPIRE AT 1100 AM CDT... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 4343 9689 4364 9688 4362 9654 4341 9663 $$ Gillispie
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, 7:19 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, 5:19 PM CDT | Heat Advisory | FSD | Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 9 more | 28 hr |
Nearby
Flash Flood Warnings in South Dakota, 2019Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.