Alert archive / Minnesota / Flash Flood Warnings in 2010

Flash Flood Warning 16, NWS Twin Cities, MN

August 12, 20105 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Aug 12, 2010, 11:25 PM CDT for 5 counties in Minnesota. It was in force for 3 hr. 3 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 12, 2010, 11:25 PM CDT (04:25 UTC)
Expired: Aug 13, 2010, 2:30 AM CDT
In force: 3 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

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

The radar

The Minneapolis radar (KMPX), 147 km from the middle of the area, began a volume at 04:27 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 12, 11:30 PM CDT	FLASH FLOOD	Sacred Heart, MN	STREET FLOODING.
Aug 13, 12:21 AM CDT	FLASH FLOOD	Olivia, MN	10 TO 12 INCHES WATER ON ROADS AROUND TOWN AND ALSO WESTERN RENVILLE COUNTY.
Aug 13, 12:21 AM CDT	FLASH FLOOD	Renville, MN	UP TO 10 INCHES OF WATER ON U.S. HIGHWAY 212 WESTERN RENVILLE COUNTY...WATER COVERED ROADS CLOSED OR CLOSING...MNDOT NOTIFIED.

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, 4.4 hours before the alert went out and 144 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: 3684 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

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

439 
WGUS53 KMPX 130425
FFWMPX
MNC023-067-073-129-173-130730-
/O.NEW.KMPX.FF.W.0016.100813T0425Z-100813T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1125 PM CDT THU AUG 12 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...
  EAST CENTRAL LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA...
  EASTERN YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHWESTERN RENVILLE COUNTY IN CENTRAL MINNESOTA...
  SOUTHERN KANDIYOHI COUNTY IN CENTRAL MINNESOTA...

* UNTIL 230 AM CDT

* AT 1121 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED STREET   
  FLOODING IN GRANITE FALLS WITH KNEE DEEP WATER ON HIGHWAY 212.     
  THIS VERY HEAVY RAINFALL WILL BE EXPANDING NORTHEASTWARD TOWARD    
  RENVILLE...CLARA CITY AND OLIVIA.  RAINFALL RATES OF AROUND 2      
  INCHES PER HOUR ARE POSSIBLE WHICH WILL CAUSE FLOODING. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GRANITE FALLS...MONTEVIDEO...OLIVIA...WILLMAR...BIRD ISLAND...
  BLOMKEST...CLARA CITY...CLARKFIELD...DANUBE...ECHO...GLUEK...HANLEY
  FALLS...HAZEL RUN...KANDIYOHI...LAKE LILLIAN...MAYNARD...MINNESOTA
  FALLS...PRIAM...PRINSBURG...RAYMOND...RENVILLE...SACRED HEART...
  SVEA...THORPE...WATSON AND WOOD LAKE.

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 4512 9591 4515 9478 4470 9477 4470 9530
      4468 9531 4470 9536 4459 9536 4456 9538
      4456 9557 4462 9559 4463 9581

$$

BAP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 7:02 PM CDT	Tornado Warning	MPX	Swift	43 min
Aug 12, 7:10 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns, Swift	65 min
Aug 12, 7:20 PM CDT	Severe Thunderstorm Warning	MPX	Stearns, Todd	40 min
Aug 12, 7:25 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, McLeod, Meeker, Sherburne, Sibley and 1 more	50 min
Aug 12, 7:36 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	24 min
Aug 12, 7:43 PM CDT	Special Weather Statement	MPX	Le Sueur, Rice, Scott	47 min
Aug 12, 7:58 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Sherburne, Stearns, Todd	62 min
Aug 12, 8:08 PM CDT	Special Weather Statement	MPX	Anoka, Isanti, Ramsey	37 min
Aug 12, 8:14 PM CDT	Tornado Warning	MPX	Benton, Sherburne, Stearns	25 min
Aug 12, 8:28 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Isanti, Kanabec, Mille Lacs, Morrison	62 min
Aug 12, 8:44 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Isanti	46 min
Aug 12, 10:15 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Renville, Yellow Medicine	60 min
Aug 12, 10:57 PM CDT	Areal Flood Advisory	MPX	Brown, Chippewa, Kandiyohi, Lac qui Parle, Meeker, Nicollet and 8 more	6 hr
Aug 12, 11:03 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Renville, Yellow Medicine	57 min
Aug 12, 11:28 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	47 min
Aug 13, 12:10 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Martin, Watonwan	65 min
Aug 13, 12:13 AM CDT	Flash Flood Warning	MPX	McLeod, Meeker, Renville, Sibley, Wright	3 hr
Aug 13, 12:28 AM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Renville	62 min
Aug 13, 12:44 AM CDT	Areal Flood Advisory	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 3 more	3 hr
Aug 13, 1:05 AM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Scott, Sibley	55 min
Aug 13, 1:12 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet, Waseca	63 min
Aug 13, 1:50 AM CDT	Special Weather Statement	MPX	Anoka, Dakota, Hennepin, Ramsey, Rice, Washington	70 min
Aug 13, 1:56 AM CDT	Areal Flood Advisory	MPX	Blue Earth, Le Sueur, Nicollet, Rice, Sibley, Steele and 1 more	3 hr
Aug 13, 2:09 AM CDT	Flash Flood Warning	MPX	Carver, Dakota, Hennepin, Ramsey, Scott, Washington	3 hr
Aug 13, 2:09 AM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Rice, Steele, Waseca	66 min
Aug 13, 2:52 AM CDT	Severe Thunderstorm Warning	MPX	Goodhue	53 min
Aug 13, 3:14 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice, Steele	61 min
Aug 13, 3:30 AM CDT	Flash Flood Warning	MPX	Goodhue	3 hr
Aug 13, 3:41 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	64 min
Aug 13, 3:55 AM CDT	Tornado Warning	MPX	Goodhue	18 min
Aug 13, 4:11 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Le Sueur, Rice, Scott, Washington	64 min
Aug 13, 4:26 AM CDT	Severe Thunderstorm Warning	MPX	Anoka, Carver, Dakota, Hennepin, McLeod, Ramsey and 4 more	64 min
Aug 13, 4:38 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	67 min
Aug 13, 5:25 AM CDT	Special Weather Statement	MPX	Pope	50 min
Aug 13, 5:38 AM CDT	Severe Thunderstorm Warning	MPX	Pope, Stevens, Swift	52 min
Aug 13, 6:10 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns, Swift	50 min
Aug 13, 6:52 AM CDT	Special Weather Statement	MPX	Meeker	53 min
Aug 13, 1:05 PM CDT	Special Weather Statement	MPX	Isanti	40 min
Aug 13, 1:46 PM CDT	Special Weather Statement	MPX	Stearns	29 min
Aug 13, 2:13 PM CDT	Tornado Warning	MPX	Chisago	17 min
Aug 13, 2:25 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Meeker, Morrison, Sherburne, Stearns, Todd and 1 more	65 min
Aug 13, 2:37 PM CDT	Special Weather Statement	MPX	Carver, McLeod, Nicollet, Sibley	23 min
Aug 13, 2:53 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Sibley, Wright	52 min
Aug 13, 3:01 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Morrison, Sherburne, Stearns, Wright	59 min
Aug 13, 3:19 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Chisago, Isanti, Kanabec, Mille Lacs, Morrison and 1 more	56 min
Aug 13, 4:34 PM CDT	Special Weather Statement	MPX	McLeod, Sherburne, Wright	41 min
Aug 13, 4:36 PM CDT	Special Weather Statement	MPX	McLeod, Sherburne, Wright	39 min
Aug 13, 5:34 PM CDT	Tornado Warning	MPX	Blue Earth, Le Sueur, Waseca	56 min
Aug 13, 5:36 PM CDT	Severe Thunderstorm Warning	MPX	Washington	54 min
Aug 13, 5:40 PM CDT	Areal Flood Warning	MPX	Goodhue	6 hr
Aug 13, 6:13 PM CDT	Flash Flood Warning	MPX	Dakota	66 min

Nearby

Flash Flood Warnings in Minnesota, 2010 Every flash flood warning in 2010

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.