Alert archive / Minnesota / Flash Flood Warnings in 2022

Flash Flood Warning 2, NWS La Crosse, WI

May 19, 2022Winona County, Minnesota

NWS La Crosse, WI issued this flash flood warning at May 19, 2022, 9:25 PM CDT for Winona County, Minnesota. It was in force for 2 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: May 19, 2022, 9:25 PM CDT (02:25 UTC)
Expired: May 19, 2022, 11:33 PM CDT
In force: 2 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: None

County Winona County, MN

The radar

The La Crosse radar (KARX), 56 km from the middle of the area, began a volume at 02:28 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

Minneapolis, MN (KMPX), launched 00:00Z, 2.4 hours before the alert went out and 167 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1129 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 363 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

142 
WGUS53 KARX 200225
FFWARX
MNC169-200530-
/O.NEW.KARX.FF.W.0002.220520T0225Z-220520T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
925 PM CDT Thu May 19 2022

The National Weather Service in La Crosse has issued a

* Flash Flood Warning for...
  Northwestern Winona County in southeastern Minnesota...

* Until 1230 AM CDT.

* At 925 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 4 and 6 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  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...
  Winona, Goodview, Lewiston, Stockton, Rollingstone, Altura, 
  Minnesota City, Elba, Bethany, Lazy D Campground and Whitewater 
  State Park.

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 4407 9166 4403 9166 4398 9169 4399 9180
      4399 9204 4406 9207 4410 9202 4412 9190
      4413 9179 4408 9166

FLASH FLOOD...RADAR INDICATED

$$

Baumgardt

1 follow-up statement

994 
WGUS73 KARX 200433
FFSARX

Flash Flood Statement
National Weather Service La Crosse WI
1133 PM CDT Thu May 19 2022

MNC169-200443-
/O.CAN.KARX.FF.W.0002.000000T0000Z-220520T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winona MN-
1133 PM CDT Thu May 19 2022

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN WINONA COUNTY...

This Flash Flood Warning was replaced by a larger warning for most 
of Winona county. Washed out roads, mudslides, and some road 
closures are still occurring in the warned area.

LAT...LON 4407 9166 4403 9166 4398 9169 4399 9180
      4399 9204 4406 9207 4410 9202 4412 9190
      4413 9179 4408 9166

$$

Baumgardt

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 7:28 PM CDT	Special Weather Statement	ARX	Fillmore	62 min
May 19, 7:34 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore	41 min
May 19, 7:51 PM CDT	Severe Thunderstorm Warning	ARX	Houston	39 min
May 19, 7:57 PM CDT	Severe Thunderstorm Warning	ARX	Winona	29 min
May 19, 8:39 PM CDT	Severe Thunderstorm Warning	ARX	Houston, Winona	21 min
May 19, 9:51 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted, Winona	39 min
May 19, 10:05 PM CDT	Flash Flood Warning	ARX	Winona	4 hr
May 19, 10:37 PM CDT	Severe Thunderstorm Warning	ARX	Winona	38 min
May 20, 2:24 AM CDT	Special Weather Statement	ARX	Fillmore, Houston, Wabasha, Winona	66 min

Nearby

Flash Flood Warnings in Minnesota, 2022 Every flash flood warning in 2022

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.