Alert archive / Wisconsin / Areal Flood Warnings in 2018
Areal Flood Warning 29, NWS La Crosse, WI
NWS La Crosse, WI issued this areal flood warning at Sep 5, 2018, 2:49 AM CDT for Clark County, Jackson County, Wisconsin. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 5, 2018, 2:49 AM CDT (07:49 UTC)
- Expired
- Sep 5, 2018, 7:45 AM CDT
- In force
- 5 hr
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clark County, WI, Jackson County, WI
The radar
The La Crosse radar (KARX), 87 km from the middle of the area, began a volume at 07:50 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 7.8 hours before the alert went out and 207 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
- 1725 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1098 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.0
What forecasters said that day
The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS La Crosse, WI wrote its last area forecast discussion before this areal flood warning went out at Sep 5, 12:06 AM CDT, 2 hours 43 minutes earlier.
Area forecast discussion, Sep 5, 12:06 AM CDT, 2 hours 43 minutes before
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</html>Hazardous weather outlook, Sep 4, 1:15 PM CDT, 13 hours 34 minutes before
Hazardous Weather Outlook National Weather Service La Crosse WI 115 PM CDT Tue Sep 4 2018 IAZ008>010-018-019-029-MNZ079-086>088-094>096-WIZ017-029-032>034- 041-051100- Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Fayette-Wabasha-Dodge- Olmsted-Winona-Mower-Fillmore-Houston-Taylor-Clark-Buffalo- Trempealeau-Jackson-La Crosse- 115 PM CDT Tue Sep 4 2018 This Hazardous Weather Outlook is for parts of southeast Minnesota...northeast Iowa and western into north-central Wisconsin. .DAY ONE...This Afternoon and Tonight A Flash Flood Watch is in effect into Tonight. Numerous showers and thunderstorms are expected this afternoon into this evening. Storms have the potential to bring substanial rainfall amounts and move over the same area repeatedly, especially from southeast Minnesota into western and north central Wisconsin. Rainfall amounts of 3 to 5 inches are possible, with locally higher amounts. Rainfall rates will cause flooding in urban areas. Widespread flooding and water related issues are expected. In addition to a heavy rain threat, some storms could produce damaging wind and even tornadoes from roughly 5 to 9 pm later today. .DAYS TWO THROUGH SEVEN...Wednesday through Sunday Shower and storm chances diminish Wednesday morning, with the main threats locally heavy rain and lightning. Thunderstorm chances return for Friday night through Saturday night. Severe storms are not anticipated. .SPOTTER INFORMATION STATEMENT... Reports of rainfall and any flooding are appreciated. A few spotters groups may be needed this afternoon and evening. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. IAZ011-030-WIZ042>044-053>055-061-051100- Allamakee-Clayton-Monroe-Juneau-Adams-Vernon-Crawford-Richland- Grant- 115 PM CDT Tue Sep 4 2018 This Hazardous Weather Outlook is for portions of northeast Iowa and southwest into central Wisconsin. .DAY ONE...This Afternoon and Tonight A Flash Flood Watch is in effect through Wednesday morning. More showers and storms are expected mainly tonight into Wednesday morning. This round of storms has the potential to bring heavy rains, with 1 to 3 inches. With wet soils unable to hold any more rain and ongoing flooding on some rivers, this rainfall would likely result in enhanced or renewed flooding and flash flooding for parts of the area. A few stronger to severe storms are possible this afternoon and evening, mainly between 5 and 9 PM. Strong to damaging winds and isolated tornadoes, along with the heavy rains, are the main threats. .DAYS TWO THROUGH SEVEN...Wednesday through Sunday Shower and storm chances diminish Wednesday morning, with the main threats locally heavy rain and lightning. Thunderstorm chances return for Friday night through Saturday night. Severe storms are not anticipated. .SPOTTER INFORMATION STATEMENT... Reports of rainfall and any flooding are appreciated. A few spotters groups may be needed this afternoon and evening. .EMERGENCY MANAGEMENT COORDINATION... No webinar is scheduled. RRS/Rieck/Shea
In the hours before
Local storm report, Sep 4, 10:34 PM CDT, 4 hours 15 minutes before
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</html>Local storm report, Sep 4, 10:47 PM CDT, 4 hours 2 minutes before
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</html>Special weather statement, Sep 4, 11:06 PM CDT, 3 hours 43 minutes before
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</html>Local storm report, Sep 4, 11:08 PM CDT, 3 hours 41 minutes before
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</html>Local storm report, Sep 4, 11:10 PM CDT, 3 hours 39 minutes before
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</html>Local storm report, Sep 4, 11:29 PM CDT, 3 hours 20 minutes before
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</html>The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 7:51 PM CDT | Tornado Warning | ARX | Clark | 39 min |
| Sep 4, 8:19 PM CDT | Flash Flood Warning | ARX | Buffalo, Trempealeau | 3 hr |
| Sep 4, 9:04 PM CDT | Special Weather Statement | ARX | Crawford, La Crosse, Monroe, Vernon | 86 min |
| Sep 4, 9:21 PM CDT | Special Weather Statement | ARX | Clark | 54 min |
| Sep 4, 9:44 PM CDT | Flash Flood Warning | ARX | Clark | 5 hr |
| Sep 4, 10:17 PM CDT | Special Weather Statement | ARX | Jackson, La Crosse, Monroe, Vernon | 58 min |
| Sep 4, 11:03 PM CDT | Flash Flood Warning | ARX | Crawford, Juneau, Monroe, Richland, Vernon | 5 hr |
| Sep 4, 11:06 PM CDT | Special Weather Statement | ARX | Adams, Juneau | 84 min |
| Sep 4, 11:09 PM CDT | Areal Flood Warning | ARX | Buffalo, Jackson, Trempealeau | 4 hr |
| Sep 5, 4:08 AM CDT | Areal Flood Warning | ARX | Crawford, Juneau, Monroe, Richland, Vernon | 6 hr |
| Sep 5, 6:41 AM CDT | River Flood Warning | ARX | Monroe, Vernon | 24 hr |
| Sep 4, 7:17 PM CDT | Special Weather Statement | ARX | Floyd, Mitchell | 43 min |
| Sep 4, 7:49 PM CDT | Special Weather Statement | ARX | Howard | 56 min |
| Sep 4, 7:55 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 53 min |
| Sep 4, 8:28 PM CDT | Special Weather Statement | ARX | Fayette | 62 min |
| Sep 4, 9:14 PM CDT | Tornado Warning | ARX | Winona | 20 min |
| Sep 4, 9:16 PM CDT | Areal Flood Warning | ARX | Dodge, Mower, Olmsted, Wabasha | 3 hr |
| Sep 4, 9:56 PM CDT | River Flood Warning | ARX | Wabasha | 64 hr |
| Sep 4, 9:56 PM CDT | River Flood Warning | ARX | Olmsted | 42 hr |
Nearby
Areal Flood Warnings in Wisconsin, 2018Every areal 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.