Alert archive / Minnesota / Flash Flood Warnings in 2005

Flash Flood Warning 42, NWS Twin Cities, MN

September 24, 2005Steele County, Waseca County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Sep 24, 2005, 10:16 PM CDT for Steele County, Waseca County, Minnesota. It was in force for 6 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: Sep 24, 2005, 10:16 PM CDT (03:16 UTC)
Expired: Sep 25, 2005, 4:15 AM CDT
In force: 6 hr
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Steele County, MN, Waseca County, MN

What was reported inside it

Time	Report	Where	Remark
Sep 24, 11:45 PM CDT	FLASH FLOOD	Owatonna, MN	APPROXIMATELY 2 FEET OF WATER CROSSING THE ROADWAYS IN TOWN. MANHOLE COVERS REPORTEDLY FORCED OFF BY THE FLOODWATERS. REPORTED BY COUNTY DISPATCH.

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, 3.3 hours before the alert went out and 91 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KMPX 250317
FFWMPX
MNC147-161-250915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1016 PM CDT SAT SEP 24 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WASECA COUNTY IN SOUTH CENTRAL MINNESOTA
  STEELE COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 415 AM CDT

* AT 1016 PM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY       
  HEAVY RAIN ACROSS MUCH OF THE WARNED AREA. 
  EXPECT ADDITIONAL THUNDERSTORMS TO REDEVELOP AND PASS OVER THE     
  WARNED AREA...RESULTING IN EXCESSIVE RAINFALL.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ELLENDALE...
  JANESVILLE...MEDFORD...NEW RICHLAND...WALDORF...WASECA AND CLINTON
  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 4417 9309 4419 9375 4386 9376 4385 9308

$$

RJN

1 follow-up statement

000 
WGUS73 KMPX 250914
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
411 AM CDT SUN SEP 25 2005

MNC147-161-250926-
WASECA MN-STEELE MN-
411 AM CDT SUN SEP 25 2005

...THE FLASH FLOOD WARNING FOR STEELE AND WASECA COUNTIES WILL BE 
ALLOWED TO EXPIRE...

ALTHOUGH LIGHT TO MODERATE RAINFALL WILL CONTINUE ACROSS STEELE AND 
WASECA COUNTIES FOR MUCH OF THE REMAINDER OF THE MORNING...THE 
HEAVIEST RAINS HAVE MOVED SOUTH OF THE WARNED AREA. THEREFORE...THE 
FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 415 AM.

RADAR ESTIMATES THAT UP TO 6 INCHES OF RAIN HAVE FALLEN SOUTH OF A 
LINE FROM WASECA TO OWATONNA...ALTHOUGH MUCH OF THIS FELL SEVERAL 
HOURS AGO. STANDING WATER MAY REMAIN THROUGH MUCH OF THE EARLY 
MORNING IN ISOLATED LOCATIONS...ESPECIALLY ACROSS URBAN AREAS...SUCH 
AS OWATONNA. RAINFALL RATES ARE EXPECTED TO REMAIN LOW ENOUGH FOR 
THE REMAINDER OF THE MORNING THAT ADDITIONAL FLASH FLOODING IS NOT 
EXPECTED.

LAT...LON 4417 9309 4419 9375 4386 9376 4385 9308

$$

KAT

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 24, 9:09 PM CDT	Flash Flood Warning	MPX	Blue Earth, Nicollet, Watonwan	6 hr
Sep 24, 10:56 PM CDT	Flash Flood Warning	MPX	Goodhue, Rice	6 hr
Sep 24, 11:06 PM CDT	Flash Flood Warning	MPX	Faribault, Freeborn, Martin	3 hr
Sep 25, 1:50 AM CDT	Flash Flood Warning	MPX	Faribault, Freeborn, Martin	3 hr

Nearby

Flash Flood Warnings in Minnesota, 2005 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.