Alert archive / Wisconsin / Flash Flood Warnings in 2018
Flash Flood Warning 13, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood warning at Aug 28, 2018, 12:57 AM CDT for Monroe County, Vernon County, Wisconsin; Houston County, Minnesota. It was in force for 3 hr. 5 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
- Aug 28, 2018, 12:57 AM CDT (05:57 UTC)
- Expired
- Aug 28, 2018, 3:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Houston County, MN, Monroe County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 23 km from the middle of the area, began a volume at 06:00 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 |
|---|---|---|---|
| Aug 28, 1:18 AM CDT | FLASH FLOOD | 1 Wsw Melvina, WI | RESIDENT HAD TO BE RESCUED FROM HOME. |
| Aug 28, 2:30 AM CDT | FLASH FLOOD | Coon Valley, WI | SEVERE FLOODING OCCURRING IN COON VALLEY WITH EVACUATIONS IN PROGRESS. NUMEROUS ROADS ARE IMPASSABLE. |
| Aug 28, 2:30 AM CDT | FLASH FLOOD | Ontario, WI | ONTARIO IS UNDER WATER WITH A WORKING STRUCTURE FIRE AT THIS TIME. NUMEROUS ROADS ARE IMPASSABLE. |
| Aug 28, 3:30 AM CDT | FLASH FLOOD | Hokah, MN | ROOT RIVER IS FLOWING OVER HIGHWAY 16. |
| Aug 28, 3:48 AM CDT | FLASH FLOOD | 1 N Rockton, WI | 2 PEOPLE RESCUED IN WATER UP TO THEIR NECKS WHO WERE CAMPING NEAR THE KICKAPOO RIVER ON A CANOE TRIP |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 6.0 hours before the alert went out and 232 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
- 1833 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1443 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 302 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 15.7
The text
As transmitted.
479
WGUS53 KARX 280557
FFWARX
MNC055-WIC081-123-280845-
/O.NEW.KARX.FF.W.0013.180828T0557Z-180828T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
1257 AM CDT TUE AUG 28 2018
The National Weather Service in La Crosse has issued a
* Flash Flood Warning for...
Houston County in southeastern Minnesota...
Vernon County in southwestern Wisconsin...
Southern Monroe County in west central Wisconsin...
* Until 345 AM CDT.
* At 1251 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Radar estimates and observed
reports indicate anywhere from 3 to locally 8 inches of rain has
already fallen in the last several hours. Flash flooding has been
reported including mudslides and numerous washed out roads.
Evacuations were also occurring in southern La crosse and northern
Vernon counties.
* Some locations that will experience flooding include...
La Crosse, La Crescent, Viroqua, Caledonia, Westby, Hillsboro,
Spring Grove, Cashton, Houston, Stoddard, Coon Valley, La Farge,
Hokah, New Albin, Brownsville, Glendale, Springville, Portland,
Norwalk and Mound Prairie.
Excessive rainfall over the warned area will cause mud slides near
steep terrain. The mud slide can consist of rock, mud, vegetation and
other loose materials.
Additional rainfall amounts of 1 to 3 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4355 9067 4353 9067 4349 9122 4350 9173
4375 9173 4385 9130 4378 9124 4373 9126
4373 9091 4387 9091 4391 9031 4356 9031
$$
DASThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 7:02 PM CDT | Special Weather Statement | ARX | Clark, Jackson, Taylor | 58 min |
| Aug 27, 7:57 PM CDT | Areal Flood Advisory | ARX | La Crosse | 2 hr |
| Aug 27, 8:30 PM CDT | Tornado Warning | ARX | Juneau, Monroe | 30 min |
| Aug 27, 8:34 PM CDT | Special Weather Statement | ARX | Adams, Juneau, Monroe | 56 min |
| Aug 27, 8:57 PM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 33 min |
| Aug 27, 9:54 PM CDT | Areal Flood Advisory | ARX | La Crosse | 111 min |
| Aug 27, 10:07 PM CDT | Flash Flood Warning | ARX | Vernon | 3 hr |
| Aug 27, 10:26 PM CDT | Flash Flood Warning | ARX | La Crosse, Monroe | 3 hr |
| Aug 27, 11:32 PM CDT | Flash Flood Warning | ARX | Vernon | 3 hr |
| Aug 27, 11:51 PM CDT | River Flood Warning | ARX | Monroe, Vernon | 58 hr |
| Aug 28, 12:07 AM CDT | Flash Flood Warning | ARX | Adams, Juneau | 3 hr |
| Aug 28, 1:36 AM CDT | Flash Flood Warning | ARX | La Crosse | 114 min |
| Aug 28, 1:51 AM CDT | Flash Flood Warning | ARX | La Crosse, Monroe, Vernon | 3 hr |
| Aug 28, 2:54 AM CDT | Flash Flood Warning | ARX | Adams, Juneau | 3 hr |
| Aug 28, 3:05 AM CDT | River Flood Warning | ARX | Richland, Vernon | 55 hr |
| Aug 28, 3:05 AM CDT | River Flood Warning | ARX | Richland, Vernon | 7 days |
| Aug 28, 3:05 AM CDT | River Flood Warning | ARX | Vernon | 5 days |
| Aug 28, 3:05 AM CDT | River Flood Warning | ARX | Crawford | 5 days |
| Aug 28, 3:05 AM CDT | River Flood Warning | ARX | Crawford | 14 days |
| Aug 28, 3:05 AM CDT | River Flood Warning | ARX | Crawford | 14 days |
| Aug 28, 3:38 AM CDT | Flash Flood Warning | ARX | La Crosse, Monroe, Vernon | 4 hr |
| Aug 28, 5:43 AM CDT | Flash Flood Warning | ARX | Adams, Juneau | 3 hr |
| Aug 28, 7:33 AM CDT | Areal Flood Warning | ARX | La Crosse, Monroe, Vernon | 5 hr |
| Aug 28, 8:59 AM CDT | Areal Flood Warning | ARX | Adams, Juneau | 5 hr |
| Aug 28, 12:32 PM CDT | Areal Flood Warning | ARX | La Crosse, Monroe, Vernon | 6 hr |
| Aug 28, 1:30 PM CDT | Special Weather Statement | ARX | Juneau, Monroe | 60 min |
| Aug 28, 1:48 PM CDT | Areal Flood Warning | ARX | Adams, Juneau | 33 hr |
| Aug 28, 1:54 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe, Vernon | 51 min |
| Aug 28, 2:27 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 48 min |
| Aug 28, 2:32 PM CDT | Tornado Warning | ARX | Adams, Juneau | 28 min |
| Aug 28, 2:45 PM CDT | Tornado Warning | ARX | Adams | 17 min |
| Aug 28, 3:07 PM CDT | Flash Flood Warning | ARX | Adams, Crawford, Juneau, Monroe, Richland, Vernon | 6 hr |
| Aug 28, 6:41 PM CDT | Areal Flood Warning | ARX | La Crosse, Monroe, Vernon | 12 hr |
Nearby
Flash Flood Warnings in Wisconsin, 2018Flash Flood Warnings in Minnesota, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.