Alert archive / Wisconsin / Flash Flood Warnings in 2021
Flash Flood Warning 2, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood warning at Aug 28, 2021, 11:26 PM CDT for Fond du Lac County, Wisconsin. It was in force for 85 min. 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 28, 2021, 11:26 PM CDT (04:26 UTC)
- Expired
- Aug 29, 2021, 12:51 AM CDT
- In force
- 85 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Fond du Lac County, WI
The radar
The Green Bay radar (KGRB), 70 km from the middle of the area, began a volume at 04:26 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.4 hours before the alert went out and 69 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.
- Mixed-layer CAPE
- 969 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1292 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.0
The text
As transmitted.
908
WGUS53 KMKX 290426
FFWMKX
WIC039-290730-
/O.NEW.KMKX.FF.W.0002.210829T0426Z-210829T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Milwaukee/Sullivan WI
1126 PM CDT Sat Aug 28 2021
The National Weather Service in Milwaukee/Sullivan has issued a
* Flash Flood Warning for...
Northeastern Fond du Lac County in east central Wisconsin...
* Until 230 AM CDT.
* At 1126 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly. Radar indicated between 2 and 3 inches
has fallen in this area in the last 2 hours. Additional rainfall
of up to one half inch is possible.
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...
Southern Lake Winnebago, Van Dyne, Pipe, Johnsburg and Marytown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4384 8859 4389 8869 4389 8860 4389 8858
4389 8855 4389 8854 4389 8851 4389 8840
4394 8840 4394 8838 4394 8831 4394 8820
4394 8817 4394 8816 4391 8816 4389 8816
4388 8816
FLASH FLOOD...RADAR INDICATED
$$
KAVINSKY2 follow-up statements
932
WGUS73 KMKX 290520
FFSMKX
Flash Flood Statement
National Weather Service Milwaukee/Sullivan WI
1220 AM CDT Sun Aug 29 2021
WIC039-290730-
/O.CON.KMKX.FF.W.0002.000000T0000Z-210829T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fond du Lac WI-
1220 AM CDT Sun Aug 29 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM CDT EARLY THIS
MORNING FOR NORTHEASTERN FOND DU LAC COUNTY...
At 1220 AM CDT, Local law enforcement reported several roads remain
closed and barricaded in far northeast Fond du Lac county, including
Kiel Road between Town Hall Road and County Road W. Additional
rainfall up to one half inch is possible through 230 am CDT from
scattered thunderstorms. Localized flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Southern Lake Winnebago, Van Dyne, Pipe, Johnsburg and Marytown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4384 8859 4389 8869 4389 8840 4394 8840
4394 8838 4394 8831 4394 8820 4394 8817
4394 8816 4391 8816 4389 8816 4388 8816
FLASH FLOOD...OBSERVED
$$
KAVINSKY429
WGUS73 KMKX 290551
FFSMKX
Flash Flood Statement
National Weather Service Milwaukee/Sullivan WI
1251 AM CDT Sun Aug 29 2021
WIC039-290601-
/O.CAN.KMKX.FF.W.0002.000000T0000Z-210829T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fond du Lac WI-
1251 AM CDT Sun Aug 29 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN FOND DU LAC
COUNTY...
Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 4384 8859 4389 8869 4389 8840 4394 8840
4394 8838 4394 8831 4394 8820 4394 8817
4394 8816 4391 8816 4389 8816 4388 8816
$$
KAVINSKYThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 11:36 PM CDT | Areal Flood Advisory | MKX | Sheboygan | 3 hr |
Nearby
Flash Flood Warnings in Wisconsin, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.