Alert archive / Minnesota / Flash Flood Warnings in 2020
Flash Flood Warning 7, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at Jul 6, 2020, 6:14 AM CDT for Nobles County, Rock County, Minnesota. It was in force for 3 hr. 4 reports 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 6, 2020, 6:14 AM CDT (11:14 UTC)
- Expired
- Jul 6, 2020, 9:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Nobles County, MN, Rock County, MN
The radar
The Sioux Falls radar (KFSD), 56 km from the middle of the area, began a volume at 11:16 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 6, 8:15 AM CDT | FLASH FLOOD | 2 N Kenneth, MN | ROCK COUNTY EM REPORTS SOME WATER OVER ROADS NORTH OF KENNETH. LOCATION IS AN APPROXIMATION FOR IMPACTED AREA. |
| Jul 6, 8:20 AM CDT | HEAVY RAIN 5.3 | 4 Ne Kenneth, MN | NO FLOODING REPORTED, BUT COULD MAKE THE LOCAL CREEK SPILL OVER. |
| Jul 6, 8:33 AM CDT | HEAVY RAIN 4 | 5 Ne Kenneth, MN | RELAYED VIA NOBLES COUNTY EM. |
| Jul 6, 8:33 AM CDT | HEAVY RAIN 5.25 | 5 Se Edgerton, MN | RELAYED VIA NOBLES COUNTY EM. |
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 00:00Z, 11.2 hours before the alert went out and 232 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
- 1093 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 1362 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 208 m²/s²
- 0-3 km storm-relative helicity
- 265 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
361
WGUS53 KFSD 061114
FFWFSD
MNC105-133-061415-
/O.NEW.KFSD.FF.W.0007.200706T1114Z-200706T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Sioux Falls SD
614 AM CDT Mon Jul 6 2020
The National Weather Service in Sioux Falls has issued a
* Flash Flood Warning for...
Eastern Rock County in southwestern Minnesota...
Western Nobles County in southwestern Minnesota...
* Until 915 AM CDT.
* At 613 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. 3-5 inches of rain have fallen.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
Luverne, Adrian, Ellsworth, Leota, Lismore, Blue Mounds State Park,
Magnolia and Kenneth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4351 9598 4352 9614 4357 9620 4372 9621
4380 9615 4384 9611 4385 9604 4385 9595
4368 9586 4360 9581
FLASH FLOOD...RADAR INDICATED
$$
JM1 follow-up statement
853
WGUS73 KFSD 061319
FFSFSD
Flash Flood Statement
National Weather Service Sioux Falls SD
819 AM CDT Mon Jul 6 2020
MNC105-133-061415-
/O.CON.KFSD.FF.W.0007.000000T0000Z-200706T1415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Rock MN-Nobles MN-
819 AM CDT Mon Jul 6 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM CDT FOR
EASTERN ROCK AND WESTERN NOBLES COUNTIES...
At 818 AM CDT, law enforcement reported water over roads north
of Kenneth. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Luverne, Adrian, Ellsworth, Leota, Lismore, Blue Mounds State Park,
Magnolia and Kenneth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Stay away or be swept away. River banks and culverts can become
unstable and unsafe.
&&
LAT...LON 4351 9598 4352 9614 4357 9620 4372 9621
4380 9615 4384 9611 4385 9604 4385 9595
4368 9586 4360 9581
FLASH FLOOD...OBSERVED
$$
WeisserThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 9:28 AM CDT | Areal Flood Warning | FSD | Nobles, Rock | 3 hr |
Nearby
Flash Flood Warnings in Minnesota, 2020Every flash flood warning in 2020
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.