Alert archive / Minnesota / Flash Flood Watches in 2016

Flash Flood Watch 2, NWS Duluth, MN

August 10, 20167 counties in Minnesota; Burnett County, Douglas County, Wisconsin

NWS Duluth, MN issued this flash flood watch at Aug 10, 2016, 11:42 AM CDT for 7 counties in Minnesota; Burnett County, Douglas County, Wisconsin. It took effect at Aug 10, 2016, 4:00 PM CDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Aug 10, 2016, 11:42 AM CDT (16:42 UTC)
In effect from: Aug 10, 2016, 4:00 PM CDT
Expired: Aug 11, 2016, 5:30 AM CDT
In force: 14 hr
Issued by: NWS Duluth, MN
Flood severity: None

Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Crow Wing County, MN, Itasca County, MN, Pine County, MN, Saint Louis County, MN, Burnett County, WI, Douglas County, WI

The radar

The Duluth radar (KDLH), 67 km from the middle of the area, began a volume at 16:41 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

Minneapolis, MN (KMPX), launched 12:00Z, 4.7 hours before the alert went out and 208 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: 537 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 910 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this flash flood watch went out at Aug 10, 7:06 AM CDT, 4 hours 36 minutes earlier.

Area forecast discussion, Aug 10, 7:06 AM CDT, 4 hours 36 minutes before

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Hazardous weather outlook, Aug 10, 5:03 AM CDT, 6 hours 39 minutes before

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In the hours before

Special weather statement, Aug 10, 6:02 AM CDT, 5 hours 40 minutes before

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Special weather statement, Aug 10, 6:17 AM CDT, 5 hours 25 minutes before

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Special weather statement, Aug 10, 6:31 AM CDT, 5 hours 11 minutes before

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Special weather statement, Aug 10, 7:00 AM CDT, 4 hours 42 minutes before

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Special weather statement, Aug 10, 7:32 AM CDT, 4 hours 10 minutes before

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Special weather statement, Aug 10, 9:01 AM CDT, 2 hours 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
901 AM CDT WED AUG 10 2016

WIZ001-002-006>008-101430-
DOUGLAS-WASHBURN-SAWYER-BAYFIELD-BURNETT-
901 AM CDT WED AUG 10 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN SAWYER...
NORTHEASTERN BURNETT...SOUTHWESTERN BAYFIELD...EASTERN DOUGLAS AND
NORTHERN WASHBURN COUNTIES...

AT 901 AM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
MAPLE...TO 7 MILES SOUTHEAST OF WEBB LAKE WISCONSIN...AND MOVING EAST
AT 45 MPH.

WIND GUSTS UP TO 45 MPH...PEA SIZE HAIL...TORRENTIAL RAINFALL...AND
OCCASIONAL CLOUD TO GROUND LIGHTNING CAN BE EXPECTED WITH THESE
STORMS.

THESE STORMS WILL BE NEAR...
  LAKE NEBAGAMON...MAPLE AND POPLAR IN DOUGLAS COUNTY AROUND 905 AM
  CDT.
  BRULE AND OULU AROUND 915 AM CDT.
  IRON RIVER AROUND 920 AM CDT.
  HAYWARD...STONE LAKE AND INO AROUND 930 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE TOTAGATIC LAKE...
MIDDLE EAU CLAIRE LAKE...NORTHWOODS BEACH...SPRINGBROOK...LAMPSON...
WENTWORTH...BIRCH ISLAND LAKE...TOTAGATIC FLOWAGE...MCKENZIE LAKE AND
EARL.

SEEK SHELTER INSIDE A STURDY BUILDING AND AWAY FROM WINDOWS UNTIL
THESE STORMS PASS.

LAT...LON 4664 9187 4668 9106 4585 9142 4585 9223
TIME...MOT...LOC 1401Z 268DEG 37KT 4659 9173 4593 9201

DAP

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 9:30 PM CDT	Small Craft Advisory	DLH		49 hr
Aug 10, 4:19 AM CDT	Special Weather Statement	DLH	Crow Wing	26 min
Aug 10, 4:34 AM CDT	Beach Hazards Statement	DLH	Carlton, Saint Louis	16 hr
Aug 10, 4:56 AM CDT	Special Weather Statement	DLH	Crow Wing	19 min
Aug 10, 5:15 AM CDT	Special Weather Statement	DLH	Cass	15 min
Aug 10, 5:38 AM CDT	Special Weather Statement	DLH	Cass	22 min
Aug 10, 6:02 AM CDT	Special Weather Statement	DLH	Crow Wing	13 min
Aug 10, 6:17 AM CDT	Special Weather Statement	DLH	Crow Wing	13 min
Aug 10, 6:31 AM CDT	Special Weather Statement	DLH	Aitkin, Crow Wing	29 min
Aug 10, 7:00 AM CDT	Special Weather Statement	DLH	Aitkin, Carlton, Pine	30 min
Aug 10, 7:32 AM CDT	Special Weather Statement	DLH	Carlton, Pine	28 min
Aug 10, 9:48 AM CDT	Special Marine Warning	DLH		42 min
Aug 10, 3:44 PM CDT	Special Weather Statement	DLH	Wadena	31 min
Aug 10, 4:04 PM CDT	Special Weather Statement	DLH	Cass	26 min
Aug 10, 4:21 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Crow Wing	39 min
Aug 10, 4:33 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Crow Wing	42 min
Aug 10, 4:59 PM CDT	Special Weather Statement	DLH	Crow Wing	31 min
Aug 10, 5:28 PM CDT	Special Weather Statement	DLH	Crow Wing	32 min
Aug 10, 6:20 PM CDT	Special Weather Statement	DLH	Lake	25 min
Aug 10, 6:33 PM CDT	Severe Thunderstorm Warning	DLH	Pine	42 min
Aug 10, 6:41 PM CDT	Areal Flood Advisory	DLH	Lake	3 hr
Aug 10, 9:01 AM CDT	Special Weather Statement	DLH	Bayfield, Douglas, Washburn	29 min
Aug 10, 9:38 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield	37 min
Aug 10, 10:14 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Iron	46 min
Aug 10, 10:55 AM CDT	Severe Thunderstorm Warning	DLH	Iron	16 min

Nearby

Flash Flood Watches in Minnesota, 2016 Flash Flood Watches in Wisconsin, 2016 Every flash flood watch 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.