Alert archive / Wisconsin / Flash Flood Warnings in 2021

Flash Flood Warning 2, NWS Duluth, MN

July 14, 2021Washburn County, Wisconsin

NWS Duluth, MN issued this flash flood warning at Jul 14, 2021, 2:54 PM CDT for Washburn County, Wisconsin. It was in force for 3 hr. 6 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 14, 2021, 2:54 PM CDT (19:54 UTC)
Expired: Jul 14, 2021, 5:32 PM CDT
In force: 3 hr
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Flood severity: None

County Washburn County, WI

The radar

The Duluth radar (KDLH), 133 km from the middle of the area, began a volume at 19:55 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
Jul 14, 3:23 PM CDT	HEAVY RAIN 0.89	2 Ese Sarona, WI
Jul 14, 3:23 PM CDT	HEAVY RAIN 2.4	Sarona, WI
Jul 14, 4:45 PM CDT	HEAVY RAIN 2.87	2 E Sarona, WI
Jul 14, 5:23 PM CDT	FLOOD	2 Nw Sarona, WI	REPORT FROM MPING: RIVER/CREEK OVERFLOWING; CROPLAND/YARD/BASEMENT FLOODING.
Jul 14, 5:23 PM CDT	FLASH FLOOD	2 Nnw Sarona, WI	CORRECTS PREVIOUS FLOOD REPORT FROM 2 NNW SARONA. REPORT FROM MPING: RIVER/CREEK OVERFLOWING; CROPLAND/YARD/BASEMENT FLOODING.
Jul 14, 5:40 PM CDT	HEAVY RAIN 3.3	Sarona, WI	PLUGGED CULVERTS AND STANDING WATER IN FIELDS, BUT NOT AS BAD AS EXPECTED GIVEN THE AMOUNT OF RAIN.

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, 7.9 hours before the alert went out and 172 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: 2820 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1084 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

236 
WGUS53 KDLH 141954
FFWDLH
WIC129-142300-
/O.NEW.KDLH.FF.W.0002.210714T1954Z-210714T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Duluth MN
254 PM CDT Wed Jul 14 2021

The National Weather Service in Duluth has issued a

* Flash Flood Warning for...
  Southeastern Washburn County in northwestern Wisconsin...

* Until 600 PM CDT.

* At 254 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Shell Lake and Sarona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4564 9188 4570 9195 4578 9187 4580 9179
      4581 9168 4579 9160 4572 9157 4564 9164
      4564 9165 4564 9166 4564 9167 4564 9170
      4564 9178 4564 9182 4564 9183 4564 9185

FLASH FLOOD...RADAR INDICATED

$$

Wolfe

1 follow-up statement

368 
WGUS73 KDLH 142232
FFSDLH

Flash Flood Statement
National Weather Service Duluth MN
532 PM CDT Wed Jul 14 2021

WIC129-142242-
/O.CAN.KDLH.FF.W.0002.000000T0000Z-210714T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washburn WI-
532 PM CDT Wed Jul 14 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN WASHBURN 
COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4564 9188 4570 9195 4578 9187 4580 9179
      4581 9168 4579 9160 4572 9157 4564 9164
      4564 9165 4564 9166 4564 9167 4564 9170
      4564 9178 4564 9182 4564 9183 4564 9185

$$

Wolfe

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 10:43 AM CDT	Beach Hazards Statement	DLH	Douglas	10 hr
Jul 14, 1:21 PM CDT	Special Weather Statement	DLH	Price, Sawyer, Washburn	24 min
Jul 14, 1:56 PM CDT	Special Weather Statement	DLH	Washburn	19 min
Jul 14, 2:21 PM CDT	Special Weather Statement	DLH	Washburn	24 min

Nearby

Flash Flood Warnings in Wisconsin, 2021 Every flash flood warning in 2021

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.