Alert archive / Minnesota / Flash Flood Warnings in 2016

Flash Flood Warning 20, NWS Sioux Falls, SD

July 16, 20166 counties in Minnesota; Brookings County, South Dakota

NWS Sioux Falls, SD issued this flash flood warning at Jul 16, 2016, 11:35 PM CDT for 6 counties in Minnesota; Brookings County, South Dakota. It was in force for 6 hr. 3 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 16, 2016, 11:35 PM CDT (04:35 UTC)
Expired
Jul 17, 2016, 5:30 AM CDT
In force
6 hr
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Flood severity
None

Counties Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Pipestone County, MN, Brookings County, SD

The radar

The Sioux Falls radar (KFSD), 108 km from the middle of the area, began a volume at 04:36 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

TimeReportWhereRemark
Jul 17, 12:30 AM CDTHEAVY RAIN 2.84Lake Benton, MN2.84 INCHES IN UNDER 3 HOURS.
Jul 17, 12:33 AM CDTFLASH FLOODTracy, MNWATER ABOVE STREET CURBS...FIRE DEPARTMENT BARRICADING FLOODED STREETS.
Jul 17, 2:00 AM CDTHEAVY RAIN 5.63 Ssw Garvin, MNSTORM TOTAL RAINFALL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.6 hours before the alert went out and 180 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2016-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2016-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
4 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1397 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
190 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

591 
WGUS53 KFSD 170435
FFWFSD
MNC033-063-081-083-101-117-SDC011-171030-
/O.NEW.KFSD.FF.W.0020.160717T0435Z-160717T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1135 PM CDT SAT JUL 16 2016

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MURRAY COUNTY IN SOUTHWESTERN MINNESOTA...
  COTTONWOOD COUNTY IN SOUTHWESTERN MINNESOTA...
  NORTHEASTERN JACKSON COUNTY IN SOUTHWESTERN MINNESOTA...
  LINCOLN COUNTY IN SOUTHWESTERN MINNESOTA...
  NORTHEASTERN PIPESTONE COUNTY IN SOUTHWESTERN MINNESOTA...
  LYON COUNTY IN SOUTHWESTERN MINNESOTA...
  EASTERN BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA...

* UNTIL 530 AM CDT

* AT 1133 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. RAINFALL RATES ARE EXCEEDING 2
  TO 4 INCHES PER HOUR. RADAR IS ESTIMATED UPWARDS OF 1 TO 3 INCHES
  OF RAIN HAS FALLEN SINCE 9 PM. FLASH FLOODING IS EXPECTED TO BEGIN
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BROOKINGS...MARSHALL...WINDOM...SLAYTON...TRACY...MOUNTAIN LAKE...
  TYLER...BERGEN...WESTBROOK...ELKTON...HENDRICKS...LAKE BENTON...
  BALATON...IVANHOE...AURORA...WHITE...COMFREY...JEFFERS...
  RUSSELL AND RUTHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4432 9681 4455 9653 4447 9559 4419 9559
      4420 9510 4411 9510 4411 9486 4368 9486

$$

DUX
2 follow-up statements
487 
WGUS73 KFSD 170557
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1257 AM CDT SUN JUL 17 2016

MNC033-063-081-083-101-117-SDC011-171030-
/O.CON.KFSD.FF.W.0020.000000T0000Z-160717T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MURRAY MN-COTTONWOOD MN-JACKSON MN-LINCOLN MN-PIPESTONE MN-LYON MN-
BROOKINGS SD-
1257 AM CDT SUN JUL 17 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM CDT FOR
MURRAY...COTTONWOOD...NORTHEASTERN JACKSON...LINCOLN...NORTHEASTERN
PIPESTONE...LYON AND EASTERN BROOKINGS COUNTIES...

AT 1233 AM CDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING IN
TRACY.  FLASH FLOODING IS ALREADY OCCURRING. RADAR ESTIMATES THAT 2
TO 5 INCHES OF RAIN HAS ALREADY FALLEN. ADDITIONAL HEAVY RAINFALL
WILL BE POSSIBLE THROUGH THE EARLY MORNING HOURS...WITH AS MUCH AS
2 ADDITIONAL INCHES OF RAIN POSSIBLE. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BROOKINGS...MARSHALL...WINDOM...SLAYTON...TRACY...MOUNTAIN LAKE...
TYLER...BERGEN...WESTBROOK...ELKTON...HENDRICKS...LAKE BENTON...
BALATON...IVANHOE...AURORA...WHITE...COMFREY...JEFFERS...
RUSSELL AND RUTHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4432 9681 4455 9653 4447 9559 4419 9559
      4420 9510 4411 9510 4411 9486 4368 9486

$$

HANKO
129 
WGUS73 KFSD 171026
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
526 AM CDT SUN JUL 17 2016

MNC033-063-081-083-101-117-SDC011-171036-
/O.EXP.KFSD.FF.W.0020.000000T0000Z-160717T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MURRAY MN-COTTONWOOD MN-JACKSON MN-LINCOLN MN-PIPESTONE MN-LYON MN-
BROOKINGS SD-
526 AM CDT SUN JUL 17 2016

...THE FLASH FLOOD WARNING FOR MURRAY...COTTONWOOD...NORTHEASTERN
JACKSON...LINCOLN...NORTHEASTERN PIPESTONE...LYON AND EASTERN
BROOKINGS COUNTIES WILL EXPIRE AT 530 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 4432 9681 4455 9653 4447 9559 4419 9559
      4420 9510 4411 9510 4411 9486 4368 9486

$$

HANKO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 9:12 PM CDTSevere Thunderstorm WarningFSDLyon48 min
Jul 16, 9:45 PM CDTFlash Flood WatchFSDCottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 1 more6 hr
Jul 16, 10:06 PM CDTSevere Thunderstorm WarningFSDCottonwood54 min
Jul 16, 10:17 PM CDTSevere Thunderstorm WarningFSDLincoln43 min
Jul 16, 10:24 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon, Murray51 min
Jul 16, 10:50 PM CDTSevere Thunderstorm WarningFSDLincoln40 min
Jul 16, 10:58 PM CDTSevere Thunderstorm WarningFSDCottonwood, Jackson47 min
Jul 16, 11:02 PM CDTSevere Thunderstorm WarningFSDCottonwood, Lyon, Murray43 min
Jul 16, 11:06 PM CDTTornado WarningFSDLincoln24 min
Jul 16, 11:13 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon, Murray47 min
Jul 16, 11:49 PM CDTSevere Thunderstorm WarningFSDCottonwood, Jackson41 min
Jul 16, 11:54 PM CDTSevere Thunderstorm WarningFSDCottonwood, Lincoln, Lyon, Murray, Pipestone44 min
Jul 17, 12:37 AM CDTSevere Thunderstorm WarningFSDNobles, Rock23 min
Jul 16, 9:20 PM CDTSevere Thunderstorm WarningFSDBrookings, Kingsbury40 min
Jul 16, 9:50 PM CDTTornado WarningFSDBrookings, Kingsbury40 min
Jul 16, 10:22 PM CDTTornado WarningFSDBrookings38 min
Jul 16, 10:58 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Douglas, Gregory32 min
Jul 16, 11:18 PM CDTSevere Thunderstorm WarningFSDBon Homme, Charles Mix, Douglas, Hutchinson, Turner, Yankton27 min
Jul 16, 11:34 PM CDTSevere Thunderstorm WarningFSDMcCook, Turner26 min
Jul 16, 11:42 PM CDTSevere Thunderstorm WarningFSDBrookings34 min
Jul 16, 11:45 PM CDTSevere Thunderstorm WarningFSDBon Homme, Charles Mix, Clay, Hutchinson, Lincoln, Turner and 2 more30 min
Jul 17, 12:00 AM CDTSevere Thunderstorm WarningFSDLincoln, McCook, Minnehaha, Turner45 min
Jul 17, 12:14 AM CDTSevere Thunderstorm WarningFSDClay, Lincoln, Turner, Union, Yankton31 min
Jul 17, 12:41 AM CDTSevere Thunderstorm WarningFSDLincoln34 min

Nearby

Flash Flood Warnings in Minnesota, 2016Flash Flood Warnings in South Dakota, 2016Every 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.