Alert archive / Minnesota / Flash Flood Warnings in 2016

Flash Flood Warning 13, NWS Duluth, MN

August 10, 2016Lake County, Minnesota

NWS Duluth, MN issued this flash flood warning at Aug 10, 2016, 9:57 PM CDT for Lake County, Minnesota. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 10, 2016, 9:57 PM CDT (02:57 UTC)
Expired
Aug 11, 2016, 2:00 AM CDT
In force
4 hr
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Flood severity
None

County Lake County, MN

The radar

The Duluth radar (KDLH), 80 km from the middle of the area, began a volume at 02:57 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.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.0 hours before the alert went out and 195 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, International Fa, MN at 00:00Z on 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, International Fa, MN at 00:00Z on 2016-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

574 
WGUS53 KDLH 110257
FFWDLH
MNC075-110700-
/O.NEW.KDLH.FF.W.0013.160811T0257Z-160811T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DULUTH MN
957 PM CDT WED AUG 10 2016

THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN LAKE COUNTY IN NORTHEASTERN MINNESOTA...

* UNTIL 200 AM CDT

* AT 957 PM CDT...DOPPLER RADAR AND RAINFALL REPORTS INDICATED HEAVY
  RAIN HAS FALLEN ACROSS THE WARNED AREA. SPOTTERS AND AUTOMATED
  GAUGES REPORT BETWEEN 4 AND 6.75 INCHES OF RAIN HAVE FALLEN SINCE
  530 PM . FLASH FLOODING IS ALREADY OCCURRING LEADING TO ROAD
  CLOSURES IN THE SILVER BAY AND BEAVER BAY AREAS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SPLIT ROCK LIGHTHOUSE STATE PARK...SILVER BAY...BEAVER BAY AND
  TETTGOUCHE STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4746 9143 4733 9117 4716 9138 4727 9162
      4733 9162

$$

HUYCK
2 follow-up statements
561 
WGUS73 KDLH 110537
FFSDLH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1237 AM CDT THU AUG 11 2016

MNC075-110700-
/O.CON.KDLH.FF.W.0013.000000T0000Z-160811T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAKE MN-
1237 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHEASTERN LAKE COUNTY...

AT 1237 AM CDT...DOPPLER RADAR AND RAINFALL REPORTS INDICATED HEAVY
RAIN HAS FALLEN ACROSS THE WARNED AREA. SPOTTERS AND AUTOMATED
GAUGES REPORT BETWEEN 4 AND 6.75 INCHES OF RAIN HAVE FALLEN SINCE
530 PM . FLASH FLOODING IS ALREADY OCCURRING LEADING TO ROAD
CLOSURES IN THE SILVER BAY AND BEAVER BAY AREAS.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SPLIT ROCK LIGHTHOUSE STATE PARK...SILVER BAY...BEAVER BAY AND
TETTEGOUCHE STATE PARK.

WHILE RAINFALL HAS ENDED ACROSS THESE BASINS...WATER IS MOVING DOWN
THE BEAVER RIVER FROM WEST OF SILVER BAY TO BEAVER BAY...AND THE
BAPTISM RIVER FROM BELOW FINLAND TO TETTEGOUCHE STATE PARK. RIVER
LEVELS REMAIN HIGH...BUT WATERS ARE SLOWLY RECEDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. OBEY ALL ROAD CLOSURES FOR YOUR SAFETY.

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 4746 9143 4733 9117 4716 9138 4727 9162
      4733 9162

$$

HUYCK
479 
WGUS73 KDLH 110654
FFSDLH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
154 AM CDT THU AUG 11 2016

MNC075-110703-
/O.EXP.KDLH.FF.W.0013.000000T0000Z-160811T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAKE MN-
154 AM CDT THU AUG 11 2016

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN LAKE COUNTY WILL EXPIRE
AT 200 AM CDT...

THE HEAVY RAIN HAS ENDED. FLASH FLOODING IS NO LONGER EXPECTED TO
POSE A THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES
AND DO NOT CROSS DAMAGED OR WATER COVERED ROADS.

LAT...LON 4746 9143 4733 9117 4716 9138 4727 9162
      4733 9162

$$

MELDE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 7:20 PM CDTSpecial Weather StatementDLHPine25 min
Aug 10, 7:33 PM CDTFlash Flood WarningDLHLake3 hr
Aug 11, 3:15 AM CDTSpecial Weather StatementDLHKoochiching30 min
Aug 11, 3:53 AM CDTAreal Flood AdvisoryDLHKoochiching112 min
Aug 11, 10:03 AM CDTBeach Hazards StatementDLHCarlton, Saint Louis9 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.