Alert archive / Minnesota / Flash Flood Warnings in 2016

Flash Flood Warning 17, NWS Twin Cities, MN

August 10, 20164 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Aug 10, 2016, 8:08 PM CDT for 4 counties in Minnesota. It was in force for 3 hr. 12 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
Aug 10, 2016, 8:08 PM CDT (01:08 UTC)
Expired
Aug 10, 2016, 11:00 PM CDT
In force
3 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

Counties Anoka County, MN, Hennepin County, MN, Ramsey County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 51 km from the middle of the area, began a volume at 01:10 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 10, 8:30 PM CDTHEAVY RAIN 1.452 Nnw St. Paul, MNREPORTED AT MARYLAND AND WESTERN AVE, ST PAUL MN. THE DURATION OF THE HEAVY RAIN EVENT WAS 45 MINUTES.
Aug 10, 8:34 PM CDTHEAVY RAIN 2.282 Ese Columbia Heights, MNMESONET STATION COLUMBIA HEIGHTS 2 ESE /STNTH/. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.
Aug 10, 8:40 PM CDTFLOOD4 S Falcon Heights, MN3 TO 4 INCHES OF FLOWING WATER OVER ROADWAY. REPORTED AT CRETIN AND ST CLAIR AVE, ST PAUL MN.
Aug 10, 8:52 PM CDTFLOOD1 Ene Richfield, MNHIGHWAY 62 COMPLETELY UNDER WATER. REPORTED AT HWY 62 AND PENN AVE, RICHFIELD, MN.
Aug 10, 8:56 PM CDTHEAVY RAIN 1.751 Ssw The Lake Minneton, MNMESONET STATION MINNETONKA /C5102/. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.
Aug 10, 9:00 PM CDTHEAVY RAIN 1.252 Wsw Richfield, MNREPORTED AT 76 TH AND YORK AVE, EDINA, MN.
Aug 10, 9:00 PM CDTHEAVY RAIN 1.252 Wsw Richfield, MNREPORTED AT 76 TH AND YORK AVE, EDINA, MN. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.
Aug 10, 9:00 PM CDTHEAVY RAIN 1.642 Ne Edina, MN. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.
Aug 10, 9:08 PM CDTHEAVY RAIN 1.581 Ne Brooklyn Park, MN. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.
Aug 10, 9:19 PM CDTHEAVY RAIN 1.643 Sse Columbia Heights, MNREPORTED AT LOWRY AVE AND STINSON BLVD, MINNEAPOLIS, MN. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.
Aug 10, 9:30 PM CDTFLOOD1 S Hopkins, MNWATER COVERING ROAD WESTBROOKE-WAY NEAR NINE MILE CREEK.
Aug 10, 9:36 PM CDTHEAVY RAIN 3.51 Nne Oakdale, MN. THE DURATION OF THE HEAVY RAIN EVENT WAS 1 HOUR.

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, 1.1 hours before the alert went out and 54 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 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2446 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2016-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
2446 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
191 m²/s²
Significant tornado parameter
1.5
Supercell composite
9.6

Open this sounding in Storm Lab

The text

As transmitted.

748 
WGUS53 KMPX 110108
FFWMPX
MNC003-053-123-163-110400-
/O.NEW.KMPX.FF.W.0017.160811T0108Z-160811T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
808 PM CDT WED AUG 10 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  EASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  CENTRAL ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 1100 PM CDT

* AT 807 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. THESE STORMS HAVE HAD A HISTORY
  OF PRODUCING 2 TO 4 INCHES OF RAIN IN LESS THAN 90 MINUTES. FLASH
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MINNEAPOLIS...ST. PAUL...BLOOMINGTON...BROOKLYN PARK...PLYMOUTH...
  WOODBURY...MAPLE GROVE...COON RAPIDS...EDEN PRAIRIE...BLAINE...
  MINNETONKA AND EDINA.

TOTAL RAINFALL AMOUNTS OF 3 TO 5 INCHES ARE EXPECTED WITHIN 2 TO 3
HOURS.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4519 9277 4511 9274 4506 9280 4502 9276
      4492 9276 4489 9302 4492 9305 4492 9313
      4486 9320 4484 9351 4523 9349 4530 9302
      4530 9275

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 7:03 PM CDTFlash Flood WarningMPXKandiyohi, Meeker3 hr
Aug 10, 7:18 PM CDTSpecial Weather StatementMPXChippewa, Swift42 min
Aug 10, 7:37 PM CDTSpecial Weather StatementMPXHennepin, Ramsey, Washington83 min
Aug 10, 7:53 PM CDTFlash Flood WarningMPXCarver, Hennepin, McLeod, Wright3 hr
Aug 10, 8:11 PM CDTFlash Flood WarningMPXKandiyohi, Meeker, Renville3 hr
Aug 10, 8:44 PM CDTFlash Flood WarningMPXCarver, Dakota, Hennepin, Scott, Washington3 hr
Aug 10, 10:11 PM CDTAreal Flood WarningMPXKandiyohi12 hr
Aug 10, 11:05 PM CDTSpecial Weather StatementMPXNicollet, Redwood, Sibley85 min
Aug 11, 12:40 AM CDTSpecial Weather StatementMPXChippewa, Lac qui Parle, Renville, Yellow Medicine65 min
Aug 11, 12:49 AM CDTSpecial Weather StatementMPXBlue Earth, Brown, Steele, Waseca, Watonwan41 min
Aug 11, 1:03 AM CDTSpecial Weather StatementMPXDouglas, Pope, Stevens, Todd57 min
Aug 11, 1:53 AM CDTSpecial Weather StatementMPXChippewa, Yellow Medicine52 min
Aug 11, 2:07 AM CDTFlash Flood WarningMPXChippewa, Lac qui Parle, Renville, Yellow Medicine4 hr
Aug 11, 2:28 AM CDTSpecial Weather StatementMPXBlue Earth, Brown, Steele, Waseca, Watonwan47 min
Aug 11, 2:42 AM CDTSpecial Weather StatementMPXBrown, Redwood, Renville63 min
Aug 11, 3:03 AM CDTAreal Flood WarningMPXDouglas, Pope, Stevens110 min
Aug 11, 3:31 AM CDTSpecial Weather StatementMPXBlue Earth, Brown, Martin, Nicollet, Sibley, Watonwan59 min
Aug 11, 4:25 AM CDTSpecial Weather StatementMPXFaribault, Freeborn, Le Sueur, Rice, Steele, Waseca65 min
Aug 11, 5:41 AM CDTSpecial Weather StatementMPXGoodhue64 min
Aug 11, 3:18 PM 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.