Alert archive / Minnesota / Flash Flood Warnings in 2007

Flash Flood Warning 4, NWS Twin Cities, MN

May 19, 2007Blue Earth County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at May 19, 2007, 6:19 PM CDT for Blue Earth County, Minnesota. It was in force for 116 min. 3 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
May 19, 2007, 6:19 PM CDT (23:19 UTC)
Expired
May 19, 2007, 8:15 PM CDT
In force
116 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Blue Earth County, MN

What was reported inside it

TimeReportWhereRemark
May 19, 6:43 PM CDTHEAVY RAIN 0Mapleton, MNMAPLETON POLICE REPORT SEVERE STREET FLOODING THROUGHOUT TOWN
May 19, 7:10 PM CDTFLASH FLOODMapleton, MNMULTIPLE SIDE STREETS FLOODED..A FEW STALLED CARS. DRAINAGE DITCFHES OUTSIDE TOWN OVER BANKS
May 19, 7:14 PM CDTHEAVY RAIN 0Mapleton, MN3.1 INCHES OF RAIN SINCE LATE AFTERNOON

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 12:00Z, 11.3 hours before the alert went out and 98 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 2007-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2007-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
1356 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
176 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 192320
FFWMPX
MNC013-200115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
619 PM CDT SAT MAY 19 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 815 PM CDT

* AT 619 PM CDT...RADAR DETECTED THUNDERSTORMS PRODUCING VERY HEAVY
  RAIN ACROSS MUCH OF THE WARNED AREA. THE STORMS PRODUCING THE
  HEAVIEST RAIN WERE OVER MAPLETON...OR ABOUT 17 MILES SOUTH OF
  MANKATO.  THESE STORMS WERE MOVING EAST AT 10 MPH. EXPECT ADDTIONAL
  SLOW MOVING THUNDERSTORMS TO PRODUCE TORRENTIAL RAINFALL IN THE    
  WARNED AREA. RADAR ESTIMATES THAT 1 TO 3 INCHES OF RAIN HAS FALLEN 
  IN ONE HOUR SINCE ABOUT 515 PM.  

.

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 4385 9429 4385 9378 4397 9378 4397 9428

$$

MB
1 follow-up statement
000 
WGUS73 KMPX 200022
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
720 PM CDT SAT MAY 19 2007

MNC013-200115-
BLUE EARTH MN-
720 PM CDT SAT MAY 19 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BLUE
EARTH COUNTY...

AT 720 PM CDT...RADAR DETECTED THUNDERSTORMS CONTINUING TO PRODUCE 
VERY HEAVY RAIN ACROSS MUCH OF THE WARNED AREA. THE STORMS PRODUCING 
THE HEAVIEST RAIN WERE OVER MAPLETON...OR ABOUT 17 MILES SOUTH OF 
MANKATO. THESE STORMS WERE NEARLY STATIONARY. SPOTTERS AND MULTIPLE 
DOPPLER RADARS HAVE ESTIMATED THAT NEARLY 3 INCHES OF RAIN HAS 
FALLEN SINCE 500 PM IN MAPLETON. EXPECT ADDITIONAL SLOW MOVING 
THUNDERSTORMS TO PRODUCE TORRENTIAL RAINFALL IN THE WARNED AREA.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...AMBOY AND VERNON
CENTER.

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. DO NOT ATTEMPT TO FORGE
FLOODED ROADWAYS BY FOOT OR AUTOMOBILE. IF YOUR VEHICLE STALLS...
ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND.

LAT...LON 4385 9429 4385 9378 4397 9378 4397 9428

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 6:03 PM CDTSevere Thunderstorm WarningMPXBlue Earth57 min
May 19, 6:47 PM CDTSevere Thunderstorm WarningMPXWaseca43 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.