Alert archive / Minnesota / Flash Flood Warnings in 2022

Flash Flood Warning 3, NWS La Crosse, WI

May 19, 2022Winona County, Minnesota

NWS La Crosse, WI issued this flash flood warning at May 19, 2022, 10:05 PM CDT for Winona County, Minnesota. It was in force for 4 hr. 1 report 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: May 19, 2022, 10:05 PM CDT (03:05 UTC)
Expired: May 20, 2022, 2:00 AM CDT
In force: 4 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 03:03 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
May 19, 10:45 PM CDT	FLASH FLOOD	1 N Pickwick, MN	MUDSLIDES REPORTED ACROSS ROADS IN HOMER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 40 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.1 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.

977 
WGUS53 KARX 200305
FFWARX
MNC169-200700-
/O.NEW.KARX.FF.W.0003.220520T0305Z-220520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service La Crosse WI
1005 PM CDT Thu May 19 2022

The National Weather Service in La Crosse has issued a

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

* Until 200 AM CDT.

* At 1005 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, St. Charles, Lewiston, Stockton, Rollingstone, 
  Altura, Utica, Minnesota City, Elba, Bethany, Lazy D Campground 
  and Whitewater State Park.

This Flash Flood Warning expands and replaces the previous Flash 
Flood Warning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4413 9175 4403 9159 4401 9151 4394 9177
      4389 9208 4406 9208 4410 9202 4413 9183

FLASH FLOOD...RADAR INDICATED

$$

Baumgardt

2 follow-up statements

491 
WGUS73 KARX 200322
FFSARX

Flash Flood Statement
National Weather Service La Crosse WI
1022 PM CDT Thu May 19 2022

MNC169-200700-
/O.CON.KARX.FF.W.0003.000000T0000Z-220520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winona MN-
1022 PM CDT Thu May 19 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 AM CDT FRIDAY FOR 
CENTRAL WINONA COUNTY...

At 1022 PM CDT, Emergency management reported thunderstorms 
producing heavy rain across the warned area and street flooding in 
Winona. Between 3 and 6 inches of rain have fallen. Additional 
rainfall amounts of 1 inch are expected by morning in the warned 
area, but most of the heavy rainfall has ended.  Flash flooding is 
ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Emergency management reported.

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, St. Charles, Lewiston, Stockton, Rollingstone, 
  Altura, Utica, Minnesota City, Elba, Bethany, Lazy D Campground 
  and Whitewater State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4413 9175 4403 9159 4401 9151 4394 9177
      4389 9208 4406 9208 4410 9202 4413 9183

FLASH FLOOD...OBSERVED

$$

Baumgardt

161 
WGUS73 KARX 200404
FFSARX

Flash Flood Statement
National Weather Service La Crosse WI
1104 PM CDT Thu May 19 2022

MNC169-200700-
/O.CON.KARX.FF.W.0003.000000T0000Z-220520T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winona MN-
1104 PM CDT Thu May 19 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 AM CDT FRIDAY FOR 
WESTERN WINONA COUNTY...

At 1104 PM CDT, Emergency management reported some washed out roads 
in the warned area. There are also mudslides reported near Homer, 
south of Winona. Some additional rainfall is expected later tonight 
with amounts of 0.5 to 1 inch of rainfall possible. Flash flooding 
is ongoing.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Emergency management reported.

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, St. Charles, Lewiston, Stockton, Rollingstone, 
  Altura, Utica, Minnesota City, Elba, Bethany, Lazy D Campground 
  and Whitewater State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4413 9175 4403 9159 4401 9151 4394 9177
      4389 9208 4406 9208 4410 9202 4413 9183

FLASH FLOOD...OBSERVED

$$

Baumgardt

What forecasters said that day

The local office's own words before this flash 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 flash flood warning went out at May 19, 6:48 PM CDT, 3 hours 17 minutes earlier.

Area forecast discussion, May 19, 6:48 PM CDT, 3 hours 17 minutes before

Area Forecast Discussion
National Weather Service La Crosse WI
648 PM CDT Thu May 19 2022

.DISCUSSION...(This evening through Thursday)
Issued at 254 PM CDT Thu May 19 2022

Key Messages:

 - Severe weather expected this afternoon and evening

 - Frost/Freeze Headlines Maybe Needed Sunday Night

Late This Afternoon and Evening...

Continuing to monitor the northward progression of a warm front
which extends from Albert Lea, MN to Platteville, WI. Temperatures
south of this warm front range from the mid-80s to lower 90s. Dew
points have dropped into the 50s in the wake of this mornings
convection. Further to the southwest, the dew points range from
the mid-60s to lower 70s. There is still some questions how much
moisture recovery there will be in the warm sector. The latest
HRRR has a good handle on the current dew points and it shows that
the dew points will recover into the lower 60s. Until that
moisture gets back into the area, there may be a lull in
convection in this area. Soundings show an inverted V in this
area, so there will be a threat of damaging winds and large hail
once the convection returns to this area between 5 PM and 7 PM.

Meanwhile, along the warm front, VWP is showing backing winds at
KLSE and this lengthening the 0-3 km hodograph. The RAP and HRRR
indicate helicities increasing into the 300 to 400. The 0-1 km
computed CAPES will likely climb into the 800 to 1200 J/kg range.
The highest values look to be from the Iowa/Minnesota boarder
north into southeast Minnesota and maybe the counties bordering
the Mississippi in Wisconsin. This tornado threat looks to be from
4 PM to 7 PM.

As the cold front approaches and the moves into the narrow ribbon
of return moisture, there will a line of storms developing along
the cold front. These storms will be capable of producing large
hail and damaging winds. There is still some uncertainty on how
far south the storms will develop into the warm sector.

Sunday through Thursday...

Precipitation chances continue into Sunday morning as an upper level
trough moves over the area. As the trough lifts out of the area,
precipitation could linger over our northern counties into early
Sunday afternoon. High temperatures will remain in the upper 50s/low
60s during the day, and with clouds moving out overnight, low
temperatures could drop down to the low/mid 30s for some.
Frost/freeze headlines may be needed Monday morning.

Although the end of the weekend into Monday appears to be dry,
increasing chances for precipitation returns through the week. While
ensemble solutions show increasing agreement on upper level
troughing moving across the area midweek, there are differences in
the progression of the trough. With this disagreement, differences
in the timing and coverage of precipitation across the area remains.
Temperatures will return to the low/mid 60s for the start of the
week. However, EPS solutions suggest an upward trend in
temperatures into the weekend, with ensemble means above model
climatology.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 647 PM CDT Thu May 19 2022

A line of showers and storms over KRST will slowly sag into KLSE
between 20.01Z and 20.02z. Ceilings will range between 5 and 10K
feet. A few of the thunderstorms may become severe. Damaging winds
and hail are the main concerns. Visibilities at times may become
IFR/MVFR this evening in some places, but confidence was not high
enough to include them in the TAFs at this time.

The thunderstorms will gradually come to an end between
20.05z and 20.07z. While the thunderstorms will be ending
scattered showers will continue for much of the remainder of the
night.

&&

.ARX WATCHES/WARNINGS/ADVISORIES...
WI...NONE.
MN...NONE.
IA...NONE.
&&

DISCUSSION...Boyne/EMS
AVIATION...Boyne

Hazardous weather outlook, May 19, 4:23 PM CDT, 5 hours 42 minutes before

Hazardous Weather Outlook
National Weather Service La Crosse WI
423 PM CDT Thu May 19 2022

IAZ008>010-018-019-MNZ079-086>088-094>096-WIZ017-029-032>034-041-
201200-
Mitchell-Howard-Winneshiek-Floyd-Chickasaw-Wabasha-Dodge-Olmsted-
Winona-Mower-Fillmore-Houston-Taylor-Clark-Buffalo-Trempealeau-
Jackson-La Crosse-
423 PM CDT Thu May 19 2022

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and western into north central Wisconsin.

.DAY ONE...Tonight

Strong to severe storms are expected going into the evening. Large
hail is the main threat but some storms could produce damaging
wind and possibly a tornado.

Additional storms are possible later this evening too that would
pose a strong wind threat.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms could develop over northeast Iowa and southwest
Wisconsin on Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed yet today. Hail reports are
always appreciated.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

IAZ011-029-030-WIZ042>044-053>055-061-201200-
Allamakee-Fayette-Clayton-Monroe-Juneau-Adams-Vernon-Crawford-
Richland-Grant-
423 PM CDT Thu May 19 2022

This Hazardous Weather Outlook is for portions of northeast
Iowa...central Wisconsin...southwest Wisconsin and west central
Wisconsin.

.DAY ONE...Tonight

Scattered thunderstorms are possible this evening. While a bulk of
the severe weather is expected west and north of the area, a few
stronger storms could produce hail or gusty winds if they develop.

Overnight additional storms are possible which could bring gusty
winds.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms could develop over northeast Iowa and southwest
Wisconsin on Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated but if a stronger storm
develops in your area, please pass along any reports.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

Shea

In the hours before

Local storm report, May 19, 9:34 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
934 PM CDT THU MAY 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     HAIL             2 W SAINT JOSEPH        43.78N 91.07W
05/19/2022  E1.25 INCH       LA CROSSE          WI   PUBLIC

&&

Local storm report, May 19, 9:39 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
939 PM CDT THU MAY 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 PM     HAIL             2 SSE LA CROSSE         43.79N 91.22W
05/19/2022  E1.00 INCH       LA CROSSE          WI   PUBLIC

&&

JSB

Local storm report, May 19, 9:45 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
945 PM CDT THU MAY 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0907 PM     HAIL             WESTBY                  43.66N 90.86W
05/19/2022  E1.00 INCH       VERNON             WI   PUBLIC

&&

Local storm report, May 19, 9:55 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
955 PM CDT THU MAY 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0950 PM     HAIL             2 NNE BANGOR            43.91N 90.98W
05/19/2022  U0.75 INCH       LA CROSSE          WI   PUBLIC

            REPORT FROM MPING: DIME (0.75 IN.).

&&

JAR

Local storm report, May 19, 9:57 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
957 PM CDT THU MAY 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0909 PM     TSTM WND GST     CAMP DOUGLAS            43.92N 90.27W
05/19/2022  M48 MPH          JUNEAU             WI   AWOS

            AWOS STATION KVOK VOLK FIELD.

&&

JAR

Local storm report, May 19, 9:59 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
959 PM CDT THU MAY 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0925 PM     HAIL             HOLMEN                  43.97N 91.26W
05/19/2022  M1.75 INCH       LA CROSSE          WI   PUBLIC

&&

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, 9:25 PM CDT	Flash Flood Warning	ARX	Winona	2 hr
May 19, 9:51 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Olmsted, Winona	39 min
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.