Alert archive / Iowa / Flash Flood Watches in 2019
Flash Flood Watch 6, NWS La Crosse, WI
NWS La Crosse, WI issued this flash flood watch at Sep 14, 2019, 3:14 AM CDT for 4 counties in Wisconsin; 5 counties in Minnesota; 8 counties in Iowa. It took effect at Sep 14, 2019, 7:00 PM CDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Sep 14, 2019, 3:14 AM CDT (08:14 UTC)
- In effect from
- Sep 14, 2019, 7:00 PM CDT
- Expired
- Sep 15, 2019, 5:23 AM CDT
- In force
- 10 hr
- Issued by
- NWS La Crosse, WI
- Flood severity
- None
Counties Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Dodge County, MN, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Crawford County, WI, Grant County, WI, Richland County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 72 km from the middle of the area, began a volume at 08:13 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, 8.2 hours before the alert went out and 323 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Sep 13, 10:59 PM CDT, 4 hours 15 minutes earlier.
Area forecast discussion, Sep 13, 10:59 PM CDT, 4 hours 15 minutes before
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</html>Hazardous weather outlook, Sep 13, 7:02 PM CDT, 8 hours 12 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 14, 6:10 AM CDT | Areal Flood Warning | ARX | Buffalo, Trempealeau | 12 hr |
Nearby
Flash Flood Watches in Iowa, 2019Flash Flood Watches in Minnesota, 2019Flash Flood Watches in Wisconsin, 2019Every flash flood watch in 2019
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.