Alert archive / Minnesota / Flash Flood Warnings in 2016

Flash Flood Warning 20, NWS Twin Cities, MN

August 11, 20164 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Aug 11, 2016, 2:07 AM CDT for 4 counties in Minnesota. It was in force for 4 hr. 9 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 11, 2016, 2:07 AM CDT (07:07 UTC)
Expired: Aug 11, 2016, 6:00 AM CDT
In force: 4 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

Counties Chippewa County, MN, Lac qui Parle County, MN, Renville County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 138 km from the middle of the area, began a volume at 07:06 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
Aug 11, 2:34 AM CDT	HEAVY RAIN 4.2	3 Nw Watson, MN	SPOTTER REPORTED 1.7 INCHES IN LAST HOUR, 4.2 INCHES IN LAST 8 HOURS. THE DURATION OF THE HEAVY RAIN EVENT WAS 8 HOURS.
Aug 11, 4:30 AM CDT	HEAVY RAIN 3	3 S Dawson, MN	MESONET STATION PROVIDENCE (LAC QUI PARLE R) /PVRM5/.
Aug 11, 4:45 AM CDT	HEAVY RAIN 3.72	4 Wsw Sacred Heart, MN	CO-OP OBSERVER STATION GRANITE FALLS (HAWK CRK) /HAWM5/.
Aug 11, 4:45 AM CDT	HEAVY RAIN 3.76	3 Ssw Maynard, MN	MESONET STATION MAYNARD (HAWK CRK) /MRDM5/.
Aug 11, 5:00 AM CDT	HEAVY RAIN 3.84	2 Sw Montevideo, MN	MESONET STATION MONTEVIDEO 2 SW (MINN R) /MVOM5/.
Aug 11, 5:00 AM CDT	HEAVY RAIN 4.76	4 Wnw Watson, MN	MESONET STATION LAQ QUI PARLE DAM (MINN R) /LQRM5/.
Aug 11, 5:30 AM CDT	HEAVY RAIN 4.04	1 S Montevideo, MN	MESONET STATION MONTEVIDEO 1 S /AR450/.
Aug 11, 5:33 AM CDT	FLOOD	Olivia, MN	MULTIPLE IMPASSABLE ROADS THROUGHOUT THE CITY OF OLIVIA.
Aug 11, 6:00 AM CDT	HEAVY RAIN 3.81	2 Sw Montevideo, MN	MESONET STATION MONTEVIDEO 2 SW (MINN R) /MVOM5/.

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, 7.1 hours before the alert went out and 135 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: 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.

153 
WGUS53 KMPX 110707
FFWMPX
MNC023-073-129-173-111100-
/O.NEW.KMPX.FF.W.0020.160811T0707Z-160811T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
207 AM CDT THU AUG 11 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA...
  RENVILLE COUNTY IN CENTRAL MINNESOTA...
  SOUTHEASTERN LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA...
  CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 600 AM CDT

* AT 206 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MONTEVIDEO...GRANITE FALLS...OLIVIA...DAWSON...CLARA CITY...
  RENVILLE...HECTOR...BIRD ISLAND...CLARKFIELD...BUFFALO LAKE...
  SACRED HEART AND MILAN.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA.

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 4515 9604 4506 9540 4491 9524 4489 9525
      4485 9454 4471 9463 4459 9468 4463 9520
      4467 9525 4466 9529 4470 9535 4465 9536
      4471 9613

$$

JPC

3 follow-up statements

090 
WGUS73 KMPX 110928
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
428 AM CDT THU AUG 11 2016

MNC073-173-110936-
/O.CAN.KMPX.FF.W.0020.000000T0000Z-160811T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YELLOW MEDICINE MN-LAC QUI PARLE MN-
428 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN YELLOW MEDICINE AND
SOUTHEASTERN LAC QUI PARLE COUNTIES IS CANCELLED...

HEAVY RAIN HAS SHIFTED EAST AND OUT OF NORTHEASTERN YELLOW MEDICINE
AND SOUTHEASTERN LAC QUI PARLE COUNTIES. THEREFORE...FLASH FLOODING
IS NO LONGER EXPECTED TO POSE A THREAT AND WATER LEVELS ARE EXPECTED
TO RECEDE. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES AND
DO NOT ATTEMPT TO CROSS ANY ROADS THAT HAVE STANDING WATER.

LAT...LON 4506 9540 4491 9524 4489 9525 4485 9454
      4459 9468 4463 9520 4467 9525 4466 9529
      4469 9532 4477 9551 4478 9553 4479 9550
      4491 9568 4491 9572 4493 9573 4495 9580
      4514 9603

$$

MNC023-129-111100-
/O.CON.KMPX.FF.W.0020.000000T0000Z-160811T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RENVILLE MN-CHIPPEWA MN-
428 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 AM CDT FOR
RENVILLE AND CHIPPEWA COUNTIES...

AT 426 AM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING
IS EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MONTEVIDEO...GRANITE FALLS...OLIVIA...CLARA CITY...RENVILLE...
HECTOR...BIRD ISLAND...BUFFALO LAKE...SACRED HEART...MILAN...
MAYNARD AND WATSON.

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 4506 9540 4491 9524 4489 9525 4485 9454
      4459 9468 4463 9520 4467 9525 4466 9529
      4469 9532 4477 9551 4478 9553 4479 9550
      4491 9568 4491 9572 4493 9573 4495 9580
      4514 9603

$$

JPC

385 
WGUS73 KMPX 110947
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
447 AM CDT THU AUG 11 2016

MNC023-110956-
/O.CAN.KMPX.FF.W.0020.000000T0000Z-160811T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHIPPEWA MN-
447 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR CHIPPEWA COUNTY IS CANCELLED...

HEAVY RAIN HAS SHIFTED EAST AND OUT OF CHIPPEWA COUNTY.
THEREFORE...FLASH FLOODING IS NO LONGER EXPECTED TO POSE A THREAT
AND WATER LEVELS ARE EXPECTED TO RECEDE. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES AND DO NOT ATTEMPT TO CROSS ANY ROADS THAT
HAVE STANDING WATER.

LAT...LON 4489 9548 4489 9525 4485 9454 4471 9461
      4471 9463 4469 9463 4459 9468 4463 9520
      4467 9525 4466 9529 4469 9532 4476 9549

$$

MNC129-111100-
/O.CON.KMPX.FF.W.0020.000000T0000Z-160811T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RENVILLE MN-
447 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 AM CDT FOR
RENVILLE COUNTY...

AT 446 AM CDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING
IS EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OLIVIA...RENVILLE...HECTOR...BIRD ISLAND...BUFFALO LAKE...
SACRED HEART...DANUBE...LAKESIDE...MINNESOTA FALLS AND BECHYN.

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 4489 9548 4489 9525 4485 9454 4471 9461
      4471 9463 4469 9463 4459 9468 4463 9520
      4467 9525 4466 9529 4469 9532 4476 9549

$$

JPC

902 
WGUS73 KMPX 111053
FFSMPX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
553 AM CDT THU AUG 11 2016

MNC129-111101-
/O.EXP.KMPX.FF.W.0020.000000T0000Z-160811T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RENVILLE MN-
553 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR RENVILLE COUNTY WILL EXPIRE AT 600 AM
CDT...

HEAVY RAIN HAS ENDED AND FLOOD WATERS ARE EXPECTED TO GRADUALLY
RECEDE. THEREFORE...THE FLASH FLOOD WARNING FOR RENVILLE COUNTY WILL
BE ALLOWED TO EXPIRE. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES AND DO NOT ATTEMPT TO CROSS ANY ROADS THAT HAVE STANDING
WATER.

LAT...LON 4489 9548 4489 9525 4485 9454 4471 9461
      4471 9463 4469 9463 4459 9468 4463 9520
      4467 9525 4466 9529 4469 9532 4476 9549

$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 7:03 PM CDT	Flash Flood Warning	MPX	Kandiyohi, Meeker	3 hr
Aug 10, 7:18 PM CDT	Special Weather Statement	MPX	Chippewa, Swift	42 min
Aug 10, 7:37 PM CDT	Special Weather Statement	MPX	Hennepin, Ramsey, Washington	83 min
Aug 10, 7:53 PM CDT	Flash Flood Warning	MPX	Carver, Hennepin, McLeod, Wright	3 hr
Aug 10, 8:08 PM CDT	Flash Flood Warning	MPX	Anoka, Hennepin, Ramsey, Washington	3 hr
Aug 10, 8:11 PM CDT	Flash Flood Warning	MPX	Kandiyohi, Meeker, Renville	3 hr
Aug 10, 8:44 PM CDT	Flash Flood Warning	MPX	Carver, Dakota, Hennepin, Scott, Washington	3 hr
Aug 10, 10:11 PM CDT	Areal Flood Warning	MPX	Kandiyohi	12 hr
Aug 10, 11:05 PM CDT	Special Weather Statement	MPX	Nicollet, Redwood, Sibley	85 min
Aug 11, 12:40 AM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Renville, Yellow Medicine	65 min
Aug 11, 12:49 AM CDT	Special Weather Statement	MPX	Blue Earth, Brown, Steele, Waseca, Watonwan	41 min
Aug 11, 1:03 AM CDT	Special Weather Statement	MPX	Douglas, Pope, Stevens, Todd	57 min
Aug 11, 1:53 AM CDT	Special Weather Statement	MPX	Chippewa, Yellow Medicine	52 min
Aug 11, 2:28 AM CDT	Special Weather Statement	MPX	Blue Earth, Brown, Steele, Waseca, Watonwan	47 min
Aug 11, 2:42 AM CDT	Special Weather Statement	MPX	Brown, Redwood, Renville	63 min
Aug 11, 3:03 AM CDT	Areal Flood Warning	MPX	Douglas, Pope, Stevens	110 min
Aug 11, 3:31 AM CDT	Special Weather Statement	MPX	Blue Earth, Brown, Martin, Nicollet, Sibley, Watonwan	59 min
Aug 11, 4:25 AM CDT	Special Weather Statement	MPX	Faribault, Freeborn, Le Sueur, Rice, Steele, Waseca	65 min
Aug 11, 5:41 AM CDT	Special Weather Statement	MPX	Goodhue	64 min
Aug 11, 3:18 PM CDT	River Flood Warning	MPX	Goodhue	43 hr

Nearby

Flash Flood Warnings in Minnesota, 2016 Every 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.