Alert archive / Wisconsin / Flash Flood Warnings in 2018
Flash Flood Warning 1, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Jun 9, 2018, 1:49 AM CDT for Grant County, Wisconsin. It was in force for 3 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
- Jun 9, 2018, 1:49 AM CDT (06:49 UTC)
- Expired
- Jun 9, 2018, 4:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
County Grant County, WI
The radar
The La Crosse radar (KARX), 112 km from the middle of the area, began a volume at 06:50 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
Davenport, (KDVN), launched 00:00Z, 6.8 hours before the alert went out and 140 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
- 606 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1081 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 4.3
The text
As transmitted.
846
WGUS53 KARX 090649
FFWARX
WIC043-090945-
/O.NEW.KARX.FF.W.0001.180609T0649Z-180609T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
149 AM CDT SAT JUN 9 2018
The National Weather Service in La Crosse has issued a
* Flash Flood Warning for...
Southwestern Grant County in southwestern Wisconsin...
* Until 445 AM CDT
* At 146 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Radar estimates indicate 2 to 3
inches of rain has already fallen near North Andover and Beetown,
impacting Rattlesnake Creek. Flash flooding is expected to begin
shortly.
* Some locations that will experience flooding include...
Bloomington, Beetown, Potosi, Bagley, Tennyson, Patch Grove, Big H
Campground, Wyalusing State Park, Rockville, Porters Bridge,
Burton, North Andover, Hurricane and Brodtville.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 4267 9088 4278 9101 4299 9116 4300 9113
4299 9106 4300 9104 4271 9060 4266 9082
$$
RRS1 follow-up statement
213
WGUS73 KARX 090811
FFSARX
Flash Flood Statement
National Weather Service La Crosse WI
311 AM CDT SAT JUN 9 2018
WIC043-090945-
/O.CON.KARX.FF.W.0001.000000T0000Z-180609T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Grant WI-
311 AM CDT SAT JUN 9 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR
SOUTHWESTERN GRANT COUNTY...
At 308 AM CDT, showers and thunderstorms were diminishing and moving
out of the warned area. However, radar estimates indicate 3 to
locally 6 inches of rain had fallen across parts of the warned area
between midnight and 3 am. The heaviest rains fell in the Beetown to
North Andover to east of Bagley area, impacting Rattlesnake Creek.
Flash flooding is expected to begin shortly.
Some locations that will experience flooding include...Bloomington,
Beetown, Potosi, Bagley, Tennyson, Patch Grove, Big H Campground,
Wyalusing State Park, Rockville, Porters Bridge, Burton, North
Andover, Hurricane and Brodtville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 4267 9088 4278 9101 4299 9116 4300 9113
4299 9106 4300 9104 4271 9060 4266 9082
$$
RRSThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 4:21 AM CDT | Flash Flood Warning | ARX | Grant | 3 hr |
| Jun 9, 7:09 AM CDT | Areal Flood Warning | ARX | Grant | 3 hr |
| Jun 9, 11:04 AM CDT | Flash Flood Watch | ARX | Crawford, Grant | 14 hr |
Nearby
Flash Flood Warnings in Wisconsin, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.