Alert archive / Minnesota / Flash Flood Warnings in 2014

Flash Flood Warning 5, NWS Sioux Falls, SD

June 1, 2014Cottonwood County, Minnesota

NWS Sioux Falls, SD issued this flash flood warning at Jun 1, 2014, 7:59 AM CDT for Cottonwood County, Minnesota. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 1, 2014, 7:59 AM CDT (12:59 UTC)
Expired
Jun 1, 2014, 10:00 AM CDT
In force
2 hr
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Flood severity
None

County Cottonwood County, MN

The radar

The Sioux Falls radar (KFSD), 131 km from the middle of the area, began a volume at 13:00 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 1.0 hours before the alert went out and 157 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 12:00Z on 2014-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 327 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2014-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
327 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
497 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

868 
WGUS53 KFSD 011259
FFWFSD
MNC033-011500-
/O.NEW.KFSD.FF.W.0005.140601T1259Z-140601T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
759 AM CDT SUN JUN 1 2014

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COTTONWOOD COUNTY IN SOUTHWEST MINNESOTA

* UNTIL 1000 AM CDT

* AT 752 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE NORTHERN HALF OF 
  COTTONWOOD COUNTY. DOPPLER RADAR ESTIMATES ONE TO ONE AND A 
  QUARTER INCH RAINFALL RATES PER HOUR IN THIS AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO 
  OCCUR...ESPECIALLY IN LOW LYING AND POOR DRAINAGE AREAS. SOME 
  LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...JEFFERS...
  MOUNTAIN LAKE...STORDEN AND WESTBROOK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 4393 9546 4402 9547 4419 9546 4419 9512
      4410 9511 4409 9485 4391 9486

$$

MJF
2 follow-up statements
992 
WGUS73 KFSD 011401
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
901 AM CDT SUN JUN 1 2014

MNC033-011500-
/O.CON.KFSD.FF.W.0005.000000T0000Z-140601T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COTTONWOOD MN-
901 AM CDT SUN JUN 1 2014

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR COTTONWOOD COUNTY UNTIL
1000 AM CDT...

AT 854 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH HEAVY RAINFALL ACROSS THE WARNED AREA. ONE HOUR 
DOPPLER RADAR RAINFALL ESTIMATES ARE BEGINNING TO DECREASE AS THE 
STORMS SLOWLY PUSH OFF TO THE NORTHEAST AND EAST. THEREFORE IF NO 
REDEVELOPMENT OF STORMS OCCUR...IT IS VERY LIKELY THAT THE WARNING 
WILL BE ALLOWED TO EXPIRE AT 10 AM CDT.

IN THE MEANTIME AS EXCESS WATER RUNS OFF...BE AWARE OF FLOODING... 
ESPECIALLY IN LOW LYING AND POOR DRAINAGE AREAS. FLOODING MAY OCCUR 
OVER LOCATIONS SUCH AS JEFFERS...MOUNTAIN LAKE...STORDEN AND 
WESTBROOK. REPORT FLOODING TO LOCAL LAW ENFORCEMENT WHO WILL THEN 
RELAY IT TO THE NATIONAL WEATHER SERVICE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 4393 9546 4402 9547 4419 9546 4419 9512
      4410 9511 4409 9485 4391 9486

$$

MJF
467 
WGUS73 KFSD 011459
FFSFSD

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
959 AM CDT SUN JUN 1 2014

MNC033-011513-
/O.EXP.KFSD.FF.W.0005.000000T0000Z-140601T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COTTONWOOD MN-
959 AM CDT SUN JUN 1 2014

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR COTTONWOOD COUNTY
WILL BE ALLOWED TO EXPIRE AT 1000 AM CDT...

EXCESS RUNOFF FROM EARLIER HEAVY RAIN WILL CONTINUE TO DRAIN AWAY 
THROUGH MIDDAY. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO 
YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4393 9546 4402 9547 4419 9546 4419 9512
      4410 9511 4409 9485 4391 9486

$$

MJF

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 1:54 AM CDTFlash Flood WatchFSDCottonwood, Jackson, Lincoln, Lyon, Murray, Nobles and 2 more19 hr
Jun 1, 2:53 AM CDTFlash Flood WarningFSDPipestone, Rock3 hr
Jun 1, 4:53 AM CDTFlash Flood WarningFSDCottonwood, Jackson, Murray, Nobles3 hr

Nearby

Flash Flood Warnings in Minnesota, 2014Every flash flood warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.