Alert archive / Minnesota / Flash Flood Warnings in 2016

Flash Flood Warning 32, NWS Twin Cities, MN

September 21, 20165 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Sep 21, 2016, 10:07 PM CDT for 5 counties in Minnesota. It was in force for 7 hr. 2 reports 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 21, 2016, 10:07 PM CDT (03:07 UTC)
Expired
Sep 22, 2016, 5:01 AM CDT
In force
7 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

Counties Blue Earth County, MN, Goodhue County, MN, Rice County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 78 km from the middle of the area, began a volume at 03:07 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
Sep 22, 12:32 AM CDTFLASH FLOOD1 S Waseca, MNHWY 13 CLOSED NEAR HWY 14.
Sep 22, 1:51 AM CDTFLASH FLOODWaseca, MNMANY INUNDATED ROADS WITH STALLED VEHICLES IN WASECA. ASSISTANCE TO MOTORISTS AND A FEW HOMES HAVE BEEN EVACUATED. 8.72 OF RAIN HAS FALLEN TONIGHT SO FAR.

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, 3.1 hours before the alert went out and 78 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 2016-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 144 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 2016-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 428 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
144 J/kg
Mixed-layer CIN
-361 J/kg
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
428 m²/s²
0-3 km storm-relative helicity
596 m²/s²
Significant tornado parameter
0.0
Supercell composite
11.6

Open this sounding in Storm Lab

The text

As transmitted.

408 
WGUS53 KMPX 220307
FFWMPX
MNC013-049-131-147-161-220700-
/O.NEW.KMPX.FF.W.0032.160922T0307Z-160922T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1007 PM CDT WED SEP 21 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHEASTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHWESTERN GOODHUE COUNTY IN SOUTHEASTERN MINNESOTA...
  WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 200 AM CDT

* AT 1006 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. 1 TO 3 INCHES OF RAIN HAVE
  FALLEN. ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE
  IN THE WARNED AREA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  OWATONNA...FARIBAULT...WASECA...PINE ISLAND...ZUMBROTA...
  JANESVILLE...KENYON...MAPLETON...MEDFORD...WANAMINGO...
  MORRISTOWN AND ST. CLAIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4408 9408 4420 9367 4420 9353 4425 9352
      4437 9309 4435 9255 4420 9256 4419 9305
      4394 9305 4393 9409

$$

BORGHOFF
2 follow-up statements
348 
WGUS53 KMPX 220631
FFWMPX
MNC013-049-131-147-161-221100-
/O.EXT.KMPX.FF.W.0032.000000T0000Z-160922T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
131 AM CDT THU SEP 22 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHEASTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
  SOUTHWESTERN GOODHUE COUNTY IN SOUTHEASTERN MINNESOTA...
  WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 600 AM CDT

* AT 123 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED MANY
  FLOODED ROADS AND BASEMENTS ACROSS THE WARNED AREA. WIDESPREAD 3
  TO 6 INCHES OF RAIN HAS FALLEN WITH LOCALIZED AMOUNTS BETWEEN 7
  AND 9 INCHES IN THE WASECA AREA. AN ADDITIONAL 1 TO 2 INCHES OF
  RAINFALL IS EXPECTED ACROSS THE WARNED AREA. FLASH FLOODING IS
  ALREADY OCCURRING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  OWATONNA...FARIBAULT...WASECA...PINE ISLAND...ZUMBROTA...
  JANESVILLE...KENYON...MAPLETON...MEDFORD...WANAMINGO...
  MORRISTOWN AND ST. CLAIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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

&&

LAT...LON 4408 9408 4420 9367 4420 9353 4425 9352
      4437 9309 4435 9255 4420 9256 4419 9305
      4394 9305 4393 9409

$$

FRANKS
819 
WGUS73 KMPX 221001
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
501 AM CDT THU SEP 22 2016

MNC013-049-131-147-161-221008-
/O.CAN.KMPX.FF.W.0032.000000T0000Z-160922T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
STEELE MN-BLUE EARTH MN-RICE MN-GOODHUE MN-WASECA MN-
501 AM CDT THU SEP 22 2016

...THE FLASH FLOOD WARNING FOR STEELE...SOUTHEASTERN BLUE EARTH...
SOUTHERN RICE...SOUTHWESTERN GOODHUE AND WASECA COUNTIES IS
CANCELLED...

PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES AND IF YOU ARE
NEAR RIVERS...CREEKS...OR STREAMS...BE ADVISED THAT RISES ARE LIKELY
TODAY AND TOMORROW.

LAT...LON 4408 9408 4420 9367 4420 9353 4425 9352
      4437 9309 4435 9255 4420 9256 4419 9305
      4394 9305 4393 9409

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 7:00 PM CDTSevere Thunderstorm WarningMPXHennepin, Wright30 min
Sep 21, 8:10 PM CDTSevere Thunderstorm WarningMPXHennepin, Ramsey50 min
Sep 21, 8:24 PM CDTFlash Flood WarningMPXHennepin, Ramsey3 hr
Sep 21, 11:11 PM CDTFlash Flood Warning EmergencyMPXAnoka, Hennepin5 hr
Sep 21, 11:21 PM CDTSevere Thunderstorm WarningMPXFreeborn39 min
Sep 22, 12:23 AM CDTFlash Flood WarningMPXBlue Earth, Faribault, Freeborn, Steele, Waseca4 hr
Sep 22, 2:21 AM CDTSpecial Weather StatementMPXLe Sueur, Rice3 hr
Sep 22, 2:29 AM CDTSpecial Weather StatementMPXBlue Earth3 hr
Sep 22, 3:59 AM CDTFlash Flood WatchMPXBlue Earth, Brown, Dakota, Faribault, Freeborn, Goodhue and 9 more7 hr
Sep 22, 4:48 AM CDTAreal Flood WarningMPXBlue Earth, Faribault, Freeborn, Steele, Waseca24 hr
Sep 22, 4:57 AM CDTAreal Flood WarningMPXBlue Earth, Goodhue, Le Sueur, Rice, Steele, Waseca24 hr
Sep 22, 4:57 AM CDTRiver Flood WarningMPXGoodhue70 hr
Sep 22, 6:51 AM CDTSpecial Weather StatementMPXWatonwan3 hr
Sep 22, 10:57 AM CDTRiver Flood WarningMPXGoodhue43 hr

Nearby

Flash Flood Warnings in Minnesota, 2016Every flash flood warning in 2016

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.