Alert archive / Minnesota / Flash Flood Warnings in 2018

Flash Flood Warning 3, NWS Twin Cities, MN

July 3, 20185 counties in Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 3, 2018, 7:47 AM 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
Jul 3, 2018, 7:47 AM CDT (12:47 UTC)
Expired
Jul 3, 2018, 10:45 AM CDT
In force
3 hr
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

Counties Brown County, MN, Nicollet County, MN, Redwood County, MN, Renville County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 119 km from the middle of the area, began a volume at 12:47 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
Jul 3, 8:00 AM CDTFLOODWabasso, MNREPORTED VIA TWITTER. PHOTOS OF FLOODED STREETS, BALL FIELD, AND LOW LYING AREAS IN TOWN FROM HEAVY RAINFALL.
Jul 3, 8:00 AM CDTHEAVY RAIN 4.32Delhi 5ne, MNCOCORAHS STATION MN-RV-12, DELHI 5NE. THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS.
Jul 3, 9:00 AM CDTHEAVY RAIN 4.06Redwood Falls Ap, MNASOS STATION RWF, REDWOOD FALLS AP. THE DURATION OF THE HEAVY RAIN EVENT WAS 24 HOURS.

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 12:00Z, 0.8 hours before the alert went out and 116 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 12:00Z on 2018-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 103 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 12:00Z on 2018-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.19395878Sfc1 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
103 J/kg
Mixed-layer CIN
-297 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

838 
WGUS53 KMPX 031247
FFWMPX
MNC015-103-127-129-173-031545-
/O.NEW.KMPX.FF.W.0003.180703T1247Z-180703T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
747 AM CDT TUE JUL 3 2018

The National Weather Service in The Twin Cities has issued a

* Flash Flood Warning for...
  Redwood County in southwestern Minnesota...
  Southeastern Yellow Medicine County in west central Minnesota...
  Northwestern Brown County in south central Minnesota...
  Renville County in central Minnesota...
  Northwestern Nicollet County in south central Minnesota...

* Until 1045 AM CDT.

* At 746 AM CDT, Doppler radar and automated rain gauges indicated 
  heavy rain falling across the warned area. Isolated rainfall 
  amounts of 6-8 inches have been reported.
  
  Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Redwood Falls, Olivia, Springfield, Renville, Fairfax, Hector, Bird
  Island, Morgan, Walnut Grove, Lamberton, Buffalo Lake and Wabasso.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 4489 9526 4489 9450 4472 9450 4471 9463
      4446 9463 4445 9459 4439 9467 4415 9509
      4420 9510 4420 9560 4454 9560 4457 9561

$$

ETA
1 follow-up statement
742 
WGUS73 KMPX 031454
FFSMPX

Flash Flood Statement
National Weather Service Twin Cities/Chanhassen MN
954 AM CDT TUE JUL 3 2018

MNC173-031458-
/O.CAN.KMPX.FF.W.0003.000000T0000Z-180703T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yellow Medicine MN-
954 AM CDT TUE JUL 3 2018

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN YELLOW MEDICINE COUNTY IS
CANCELLED...

Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.

LAT...LON 4440 9559 4461 9526 4489 9490 4489 9450
      4472 9450 4471 9463 4446 9463 4445 9459
      4439 9467 4415 9509 4420 9510 4420 9560

$$

MNC015-103-127-129-031545-
/O.CON.KMPX.FF.W.0003.000000T0000Z-180703T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Redwood MN-Brown MN-Renville MN-Nicollet MN-
954 AM CDT TUE JUL 3 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT FOR
REDWOOD...NORTHWESTERN BROWN...RENVILLE AND NORTHWESTERN NICOLLET
COUNTIES...

At 930 AM CDT, local law enforcement & the public reported flooding 
of businesses & residences and multiple roads closed in Wabasso. 
Numerous roads and highways are also closed across Redwood County, 
including Minnesota 19 and US 14. Radar indicates isolated areas of 
6-8" of rain have fallen over the warned area with 7.1 inches of 
rain measured at an USGS gauge near Redwood Falls.

Some locations that will experience flooding include...
Redwood Falls, Olivia, Springfield, Fairfax, Hector, Bird Island,
Morgan, Walnut Grove, Lamberton, Buffalo Lake, Wabasso and Franklin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 4440 9559 4461 9526 4489 9490 4489 9450
      4472 9450 4471 9463 4446 9463 4445 9459
      4439 9467 4415 9509 4420 9510 4420 9560

$$

ETA

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 8:35 PM CDTSpecial Weather StatementMPXYellow Medicine25 min
Jul 2, 9:05 PM CDTSpecial Weather StatementMPXYellow Medicine55 min
Jul 2, 9:37 PM CDTSpecial Weather StatementMPXChippewa23 min
Jul 2, 10:06 PM CDTSpecial Weather StatementMPXChippewa, Kandiyohi54 min
Jul 2, 10:40 PM CDTSpecial Weather StatementMPXStevens50 min
Jul 2, 10:50 PM CDTSevere Thunderstorm WarningMPXStevens25 min
Jul 2, 11:48 PM CDTSpecial Weather StatementMPXDouglas42 min
Jul 3, 12:03 AM CDTSevere Thunderstorm WarningMPXDouglas27 min
Jul 3, 12:20 AM CDTSpecial Weather StatementMPXRedwood55 min
Jul 3, 12:24 AM CDTSpecial Weather StatementMPXKandiyohi51 min
Jul 3, 12:29 AM CDTSevere Thunderstorm WarningMPXKandiyohi31 min
Jul 3, 12:34 AM CDTSpecial Weather StatementMPXDouglas26 min
Jul 3, 12:48 AM CDTSevere Thunderstorm WarningMPXRedwood, Yellow Medicine42 min
Jul 3, 1:05 AM CDTSpecial Weather StatementMPXTodd55 min
Jul 3, 2:12 AM CDTAreal Flood WarningMPXKandiyohi, Redwood, Renville, Yellow Medicine9 hr
Jul 3, 3:09 AM CDTSpecial Weather StatementMPXRedwood36 min
Jul 3, 3:23 AM CDTSpecial Weather StatementMPXRenville37 min
Jul 3, 3:25 AM CDTExcessive Heat WatchMPXAnoka, Blue Earth, Brown, Carver, Dakota, Faribault and 14 more24 hr
Jul 3, 4:35 AM CDTAreal Flood WarningMPXRedwood, Renville6 hr
Jul 3, 8:25 AM CDTRiver Flood WarningMPXBrown9 days
Jul 3, 9:36 AM CDTSpecial Weather StatementMPXIsanti, Sherburne39 min
Jul 3, 10:03 AM CDTSpecial Weather StatementMPXChisago57 min
Jul 3, 10:25 AM CDTHigh Wind WarningMPXAnoka, Benton, Chisago, Isanti, Mille Lacs, Sherburne3 hr
Jul 3, 10:43 AM CDTFlash Flood WarningMPXBrown, Redwood, Renville6 hr
Jul 3, 10:48 AM CDTSpecial Weather StatementMPXDouglas, Stevens42 min
Jul 3, 11:42 AM CDTSpecial Weather StatementMPXHennepin, Ramsey, Washington, Wright63 min
Jul 3, 12:01 PM CDTSpecial Weather StatementMPXRedwood44 min
Jul 3, 12:30 PM CDTSpecial Weather StatementMPXRedwood45 min
Jul 3, 12:52 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville38 min
Jul 3, 1:25 PM CDTSpecial Weather StatementMPXRenville35 min
Jul 3, 2:01 PM CDTSpecial Weather StatementMPXRenville29 min
Jul 3, 4:08 PM CDTAreal Flood WarningMPXBrown, Redwood8 days
Jul 3, 4:18 PM CDTAreal Flood WarningMPXRedwood4 days

Nearby

Flash Flood Warnings in Minnesota, 2018Every flash flood warning in 2018

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.