Alert archive / Minnesota / Flash Flood Warnings in 2015

Flash Flood Warning 11, NWS Twin Cities, MN

September 8, 2015Blue Earth County, Faribault County, Waseca County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Sep 8, 2015, 3:11 AM CDT for Blue Earth County, Faribault County, Waseca County, Minnesota. It was in force for 4 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 8, 2015, 3:11 AM CDT (08:11 UTC)
Expired: Sep 8, 2015, 7:15 AM CDT
In force: 4 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

Counties Blue Earth County, MN, Faribault County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 106 km from the middle of the area, began a volume at 08:15 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

Time	Report	Where	Remark
Sep 8, 4:00 AM CDT	FLASH FLOOD	Wells, MN	MULTIPLE STREETS FLOODED.

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, 8.2 hours before the alert went out and 106 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: 2 J/kg
Mixed-layer CIN: -222 J/kg
Mixed-layer LCL: 1495 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

424 
WGUS53 KMPX 080811
FFWMPX
MNC013-043-161-081215-
/O.NEW.KMPX.FF.W.0011.150908T0811Z-150908T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
311 AM CDT TUE SEP 8 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  WESTERN WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...
  FARIBAULT COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 715 AM CDT
    
* AT 311 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MANKATO...NORTH MANKATO...BLUE EARTH...LAKE CRYSTAL...EAGLE LAKE...
  WELLS...JANESVILLE...MAPLETON...WINNEBAGO...MADISON LAKE...ST.
  CLAIR AND MINNESOTA LAKE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 90 BETWEEN MILE MARKERS 116 AND 141.
 U.S. HIGHWAY 14 BETWEEN MILE MARKERS 131 AND 154.
 U.S. HIGHWAY 169 BETWEEN MILE MARKERS 5 AND 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4375 9425 4384 9425 4386 9435 4414 9435
      4417 9410 4416 9405 4417 9401 4419 9401
      4421 9384 4414 9356 4384 9365 4356 9369
      4356 9410

$$

JPC

2 follow-up statements

066 
WGUS73 KMPX 080929
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
429 AM CDT TUE SEP 8 2015

MNC013-043-161-081215-
/O.CON.KMPX.FF.W.0011.000000T0000Z-150908T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLUE EARTH MN-WASECA MN-FARIBAULT MN-
429 AM CDT TUE SEP 8 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
BLUE EARTH...WESTERN WASECA AND FARIBAULT COUNTIES...

AT 427 AM CDT...DOPPLER RADAR INDICATED MODERATE TO HEAVY RAIN 
ACROSS MUCH OF THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE 
ALREADY FALLEN EARLY THIS MORNING. FLASH FLOODING MAY STILL 
OCCUR...PARTICULARLY OVER AREAS WHICH HAVE SATURATED SOILS FROM 
PREVIOUS HEAVY RAIN EVENTS OVER THE PAST FEW DAYS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MANKATO...NORTH MANKATO...BLUE EARTH...LAKE CRYSTAL...EAGLE LAKE...
WELLS...JANESVILLE...MAPLETON...WINNEBAGO...MADISON LAKE...ST. CLAIR
AND MINNESOTA LAKE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 90 BETWEEN MILE MARKERS 116 AND 141.
 U.S. HIGHWAY 14 BETWEEN MILE MARKERS 131 AND 154.
 U.S. HIGHWAY 169 BETWEEN MILE MARKERS 5 AND 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4375 9425 4384 9425 4386 9435 4414 9435
      4417 9410 4416 9405 4417 9401 4419 9401
      4421 9384 4414 9356 4384 9365 4356 9369
      4356 9410

$$

JPC

192 
WGUS73 KMPX 081149
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
649 AM CDT TUE SEP 8 2015

MNC013-043-161-081159-
/O.CAN.KMPX.FF.W.0011.000000T0000Z-150908T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLUE EARTH MN-WASECA MN-FARIBAULT MN-
649 AM CDT TUE SEP 8 2015

...THE FLASH FLOOD WARNING FOR BLUE EARTH...WESTERN WASECA AND
FARIBAULT COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

LAT...LON 4375 9425 4384 9425 4386 9435 4414 9435
      4417 9410 4416 9405 4417 9401 4419 9401
      4421 9384 4414 9356 4384 9365 4356 9369
      4356 9410

$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 1:59 AM CDT	Flash Flood Watch	MPX	Blue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 6 more	7 hr
Sep 8, 4:34 AM CDT	Special Weather Statement	MPX	Goodhue	26 min

Nearby

Flash Flood Warnings in Minnesota, 2015 Every flash flood warning in 2015

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.