Alert archive / South Dakota / Flash Flood Warnings in 2016

Flash Flood Warning 13, NWS Sioux Falls, SD

June 17, 2016Lake County, South Dakota

NWS Sioux Falls, SD issued this flash flood warning at Jun 17, 2016, 7:17 PM CDT for Lake County, South Dakota. It was in force for 3 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: Jun 17, 2016, 7:17 PM CDT (00:17 UTC)
Expired: Jun 17, 2016, 10:15 PM CDT
In force: 3 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: None

County Lake County, SD

The radar

The Sioux Falls radar (KFSD), 53 km from the middle of the area, began a volume at 00:19 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.

What was reported inside it

Time	Report	Where	Remark
Jun 17, 7:35 PM CDT	FLASH FLOOD	Madison, SD	STREET FLOODING NEAR NORTH HARTH AVENUE. REPORT AND PHOTOS POSTED 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 00:00Z, 0.3 hours before the alert went out and 146 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1368 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1582 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

621 
WGUS53 KFSD 180017
FFWFSD
SDC079-180315-
/O.NEW.KFSD.FF.W.0013.160618T0017Z-160618T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
717 PM CDT FRI JUN 17 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL LAKE COUNTY IN EAST CENTRAL SOUTH DAKOTA...

* UNTIL 1015 PM CDT

* AT 716 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. RADAR ESTIMATES THAT UP TO AN
  INCH OF RAIN HAS FALLEN SO FAR. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MADISON...LAKE HERMAN STATE PARK...WENTWORTH AND ORLAND. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED IN
THE WARNED AREA.

LAT...LON 4394 9689 4389 9719 4401 9731 4410 9714
      4415 9689

$$

SCHUMACHER

1 follow-up statement

574 
WGUS73 KFSD 180041
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
741 PM CDT FRI JUN 17 2016

SDC079-180315-
/O.CON.KFSD.FF.W.0013.000000T0000Z-160618T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAKE SD-
741 PM CDT FRI JUN 17 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
CENTRAL LAKE COUNTY...

AT 740 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS
ALREADY OCCURRING IN THE CITY OF MADISON.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MADISON...LAKE HERMAN STATE PARK...WENTWORTH AND ORLAND. 

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN
THE WARNED 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 4394 9689 4389 9719 4401 9731 4410 9714
      4415 9689

$$

SCHUMACHER

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 7:01 PM CDT	Severe Thunderstorm Warning	FSD	Lake	44 min
Jun 17, 7:33 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook	27 min
Jun 17, 7:38 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	41 min
Jun 17, 7:39 PM CDT	Severe Thunderstorm Warning	FSD	Lake	36 min
Jun 17, 8:03 PM CDT	Severe Thunderstorm Warning	FSD	Lake, McCook, Miner	27 min
Jun 17, 8:17 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, McCook, Minnehaha, Turner	28 min
Jun 17, 8:18 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	42 min
Jun 17, 8:26 PM CDT	Flash Flood Warning	FSD	Lincoln, Minnehaha	3 hr
Jun 17, 8:44 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner, Union	46 min
Jun 17, 8:49 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson	26 min
Jun 17, 8:52 PM CDT	Flash Flood Warning	FSD	Hutchinson, McCook	3 hr
Jun 17, 9:13 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Hutchinson, Turner, Yankton	47 min
Jun 17, 9:53 PM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Clay, Union, Yankton	52 min
Jun 17, 10:33 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	42 min
Jun 17, 10:41 PM CDT	Severe Thunderstorm Warning	FSD	Union	49 min
Jun 18, 3:14 AM CDT	Heat Advisory	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	41 hr

Nearby

Flash Flood Warnings in South Dakota, 2016 Every flash flood warning in 2016

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.