Alert archive / Minnesota / Flash Flood Warnings in 2007

Flash Flood Warning 21, NWS Twin Cities, MN

August 19, 2007Brown County, Redwood County, Renville County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Aug 19, 2007, 1:18 AM CDT for Brown County, Redwood County, Renville County, Minnesota. It was in force for 6 hr. 4 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 19, 2007, 1:18 AM CDT (06:18 UTC)
Expired
Aug 19, 2007, 7:15 AM CDT
In force
6 hr
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Brown County, MN, Redwood County, MN, Renville County, MN

The radar

The Minneapolis radar (KMPX), 120 km from the middle of the area, began a volume at 06:21 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
Aug 19, 1:30 AM CDTFLASH FLOODNew Ulm, MNSTREET FLOODING. SEVERAL CARS STRANDED AROUND NEW ULM.
Aug 19, 2:00 AM CDTFLASH FLOODMorgan, MN8 INCHES OF WATER AT THE INTERSECTION OF HIGHWAY 67 AND 68 IN THE CITY OF MORGAN.
Aug 19, 5:00 AM CDTHEAVY RAIN 0New Ulm, MNESTIMATED AT LEAST 5 INCHES OF RAIN AROUND NEW ULM. OFF DUTY LAW ENFORCEMENT PERSONNEL REPORTED RAIN GAGE FULL AND CONTINUES TO RAIN.
Aug 19, 5:00 AM CDTHEAVY RAIN 5New Ulm, MNOFF DUTY LAW ENFORCEMENT PERSONNEL REPORTED RAIN GAGE FULL AND CONTINUES TO RAIN.

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, 6.3 hours before the alert went out and 117 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 2007-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 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 2007-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
510 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 190619
FFWMPX
MNC015-127-129-191215-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
118 AM CDT SUN AUG 19 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  RENVILLE COUNTY IN CENTRAL MINNESOTA...
  REDWOOD COUNTY IN SOUTHWEST MINNESOTA...
  BROWN COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 715 AM CDT

* AT 116 AM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY
  HEAVY RAIN. THE STORMS PRODUCING THE HEAVIEST RAIN EXTENDED
  FROM 20 MILES NORTHWEST OF REDWOOD FALLS...TO FAIRFAX AND
  NEW ULM. ESTIMATES FROM RADAR INDICATED THAT NEARLY 4 INCHES
  OF RAIN HAS FALLEN DURING THE PAST 4 HOURS.  THUNDERSTORMS
  WILL CONTINUE TO MOVE ACROSS THE AREA THROUGH MUCH OF THE NIGHT.
  SOME SPOTS MAY PICK UP 6 OR 7 INCHES RAIN.

* SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...FAIRFAX...MORGAN...
  REDWOOD FALLS...SLEEPY EYE...NEW ULM AND WABASSO.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4442 9541 4454 9538 4455 9535 4472 9532
      4471 9463 4447 9463 4445 9476 4439 9470
      4440 9468 4433 9449 4426 9442 4413 9440

$$

TDK
2 follow-up statements
000 
WGUS73 KMPX 191020
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
516 AM CDT SUN AUG 19 2007

MNC015-127-129-191215-
RENVILLE MN-REDWOOD MN-BROWN MN-
516 AM CDT SUN AUG 19 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
BROWN...REDWOOD AND RENVILLE COUNTIES...

AT 516 AM CDT...DOPPLER RADAR RAINFALL ESTIMATES 5 TO 8 INCHES OF RAIN
HAS FALLEN FROM NEAR REDWOOD FALLS...MORGAN...SLEEPY EYE...NEW ULM AND 
HANSKA.  MOST OF THE HEAVIER RAIN IS BEGINNING TO MOVE OFF TO THE EAST 
OF THE AREA.  HOWEVER...ADDITIONAL RAIN IN THE ONE HALF TO ONE INCH RANGE
THROUGH 7 AM COULD CAUSE RAPID RUNOFF AND FURTHER FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROAD. JUST ONE FOOT OF RUSHING
WATER CAN SWEEP MOST VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 4442 9541 4454 9538 4455 9535 4472 9532
      4471 9463 4447 9463 4445 9476 4439 9470
      4440 9468 4433 9449 4426 9442 4413 9440

$$

DWE
000 
WGUS73 KMPX 191214
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
708 AM CDT SUN AUG 19 2007

MNC015-127-129-191218-
RENVILLE MN-REDWOOD MN-BROWN MN-
708 AM CDT SUN AUG 19 2007

...THE FLASH FLOOD WARNING FOR BROWN...REDWOOD AND RENVILLE COUNTIES
WILL BE ALLOWED TO EXPIRE AT 715 AM...

THE HEAVY RAIN HAS EXITED THE AREA.  LAW ENFORCEMENT OFFICIALS REPORT 
NO SIGNIFICANT FLOODING ACROSS THE AREA.  HOWEVER...RADAR PRECIPITATION
RAINFALL ESTIMATES INDICATE A LARGE AREA OF 5 TO 8 INCH TOTALS FROM SOUTH 
OF REDWOOD FALLS...TO FAIRFAX AND SOUTH TO NEW ULM.  AREA FIELDS MAY BE 
FLOODED AND ROADSIDE DITCHES MAY BE FULL.  ALSO...AREA CREEKS AND STREAMS 
MAY BE RUNNING BACKFILL. 

MOTORISTS ARE URGED TO USE CAUTION IF WATER IS FLOWING OVER THE ROADWAY.

LAT...LON 4442 9541 4454 9538 4455 9535 4472 9532
      4471 9463 4447 9463 4445 9476 4439 9470
      4440 9468 4433 9449 4426 9442 4413 9440

$$

DWE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 10:00 PM CDTFlash Flood WarningMPXGoodhue6 hr
Aug 18, 10:50 PM CDTFlash Flood WarningMPXLe Sueur, Nicollet, Rice, Sibley6 hr
Aug 19, 12:50 AM CDTFlash Flood WarningMPXSteele, Waseca4 hr
Aug 19, 12:50 AM CDTFlash Flood WarningMPXBlue Earth, Steele, Waseca4 hr
Aug 19, 2:48 AM CDTFlash Flood WarningMPXFaribault, Freeborn6 hr
Aug 19, 3:04 AM CDTFlash Flood WarningMPXWatonwan6 hr
Aug 19, 8:53 AM CDTFlash Flood WatchMPXBlue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 9 more16 hr
Aug 19, 12:04 PM CDTFlash Flood WarningMPXWatonwan3 hr
Aug 19, 2:48 PM CDTFlash Flood WarningMPXWatonwan3 hr
Aug 19, 6:20 PM CDTFlash Flood WarningMPXFaribault115 min

Nearby

Flash Flood Warnings in Minnesota, 2007Every flash flood warning in 2007

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.