Alert archive / Minnesota / Flash Flood Warnings in 2005

Flash Flood Warning 29, NWS Twin Cities, MN

September 12, 2005Chippewa County, Lac qui Parle County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Sep 12, 2005, 7:31 PM CDT for Chippewa County, Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 3 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
Sep 12, 2005, 7:31 PM CDT (00:31 UTC)
Expired
Sep 12, 2005, 10:30 PM CDT
In force
3 hr
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Chippewa County, MN, Lac qui Parle County, MN, Yellow Medicine County, MN

The radar

The Sioux Falls radar (KFSD), 159 km from the middle of the area, began a volume at 00:35 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 00:00Z, 0.5 hours before the alert went out and 174 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 2005-09-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 968 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 00:00Z on 2005-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.19395878Sfc1 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
968 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
851 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.7

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 130034
FFWMPX
MNC023-073-173-130330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
731 PM CDT MON SEP 12 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA
  CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA
  YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 1030 PM CDT

* AT 731 PM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY        
  HEAVY RAIN MOVING NORTHEAST AT 25 MPH ACROSS MUCH OF THE WARNED    
  AREA. THE STORMS PRODUCING THE HEAVIEST RAIN WERE 3 MILES          
  SOUTHWEST OF MONTEVIDEO. RAINFALL RATES WITH THESE STORMS WERE 
  ESTIMATED BY RADAR AT ONE AND ONE HALF INCH PER HOUR. TOTAL        
  ACCUMULATIONS OF 4 TO 7 INCHES ARE POSSIBLE BY 9 PM.  

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...BOYD...CANBY...CLARA
  CITY...CLARKFIELD...DAWSON...GRANITE FALLS AND HANLEY FALLS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT.
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 4464 9642 4464 9549 4489 9551 4490 9527
      4515 9526 4514 9628

$$
1 follow-up statement
000 
WGUS73 KMPX 130142
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
840 PM CDT MON SEP 12 2005

MNC023-073-173-130330-
LAC QUI PARLE MN-CHIPPEWA MN-YELLOW MEDICINE MN-
840 PM CDT MON SEP 12 2005

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
YELLOW MEDICINE...CHIPPEWA AND LAC QUI PARLE COUNTIES...

AT 829 PM...NATIONAL WEATHER SERVICE RADAR DETECTED THUNDERSTORMS 
PRODUCING HEAVY RAIN FROM SPRING CREEK AND CLARKFIELD EAST THROUGH 
HENLEY FALLS...GRANITE FALLS. THUNDERSTORMS WITH HEAVY RAINS WERE 
ALSO DETECTED AROUND MAYNARD AND CLARA CITY. WEATHER RADAR INDICATES 
RAINFALL RATES WITH THESE STORMS NEAR ONE INCH PER HOUR. 

THE HEAVY RAIN PRODUCING STORMS WILL MOVE EAST OF THE WARNING AREA 
BETWEEN 9 PM AND 930 PM LEAVING TOTAL ACCUMULATIONS OF 4 TO 5 INCHES 
IN SOME AREAS. 

RUNOFF FROM THE HEAVY RAINS WILL CONTINUE TO INUNDATED LOW LYING 
AREAS SUCH AS UNDERPASSES EVEN AFTER PRECIPITATION DIMINISHES. STAY 
AWAY FROM DRAINAGE DITCHES AND SMALL STREAMS SWOLLEN WITH RUNOFF. DO 
NOT ATTEMPT TO DRIVE ACROSS ROADS COVERED WITH FLOOD WATER...AND DO 
NOT BYPASS BARRICADES SET UP BY LAW ENFORCEMENT TO BLOCK UNSAFE 
ROADS. 

LAT...LON 4464 9642 4464 9549 4489 9551 4490 9527
      4515 9526 4514 9628

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 12, 7:14 PM CDTTornado WarningMPXChippewa, Lac qui Parle, Yellow Medicine61 min
Sep 12, 8:09 PM CDTSevere Thunderstorm WarningMPXMcLeod, Meeker, Wright66 min
Sep 12, 8:18 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Renville57 min
Sep 12, 9:10 PM CDTFlash Flood WarningMPXWright3 hr
Sep 12, 9:10 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Sherburne, Wright65 min
Sep 12, 9:14 PM CDTSevere Thunderstorm WarningMPXKandiyohi, McLeod, Meeker, Renville61 min
Sep 12, 9:47 PM CDTFlash Flood WarningMPXAnoka, Isanti, Sherburne3 hr
Sep 12, 9:54 PM CDTSevere Thunderstorm WarningMPXCarver, Sibley66 min
Sep 12, 10:11 PM CDTSevere Thunderstorm WarningMPXHennepin, Wright64 min
Sep 12, 10:34 PM CDTFlash Flood WarningMPXChisago3 hr
Sep 12, 10:38 PM CDTSevere Thunderstorm WarningMPXDakota, Scott52 min
Sep 12, 10:41 PM CDTSevere Thunderstorm WarningMPXAnoka, Ramsey35 min
Sep 12, 11:04 PM CDTSevere Thunderstorm WarningMPXChisago, Washington56 min
Sep 12, 11:47 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Faribault, Martin, Watonwan58 min
Sep 13, 12:26 AM CDTSevere Thunderstorm WarningMPXFreeborn, Steele, Waseca64 min
Sep 13, 12:44 AM CDTSevere Thunderstorm WarningMPXFaribault46 min

Nearby

Flash Flood Warnings in Minnesota, 2005Every flash flood warning in 2005

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.