Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 27, NWS La Crosse, WI

June 27, 2019La Crosse County, Monroe County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 27, 2019, 1:37 PM CDT for La Crosse County, Monroe County, Wisconsin. It was in force for 53 min. 3 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: Jun 27, 2019, 1:37 PM CDT (18:37 UTC)
Expired: Jun 27, 2019, 2:30 PM CDT
In force: 53 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties La Crosse County, WI, Monroe County, WI

The radar

The La Crosse radar (KARX), 26 km from the middle of the area, began a volume at 18:41 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
Jun 27, 1:54 PM CDT	TSTM WND DMG	Sparta, WI	TREES DOWN IN AND JUST NORTH OF TOWN. CAUSING POWER OUTAGES TOO.
Jun 27, 2:00 PM CDT	TSTM WND DMG	Sparta, WI	RECEIVED A PICTURE OF A LARGE BRANCH SNAPPED FROM A TREE. TIME ESTIMATED FROM RADAR.
Jun 27, 2:30 PM CDT	HAIL 0.25	1 N Tomah, WI

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 2 storm reports to this severe thunderstorm warning; the first came 17 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 27, 12:23 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.6 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.

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: 1844 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

050 
WUUS53 KARX 271837
SVRARX
WIC063-081-271930-
/O.NEW.KARX.SV.W.0027.190627T1837Z-190627T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
137 PM CDT Thu Jun 27 2019

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Eastern La Crosse County in west central Wisconsin...
  Central Monroe County in west central Wisconsin...

* Until 230 PM CDT.

* At 135 PM CDT, severe thunderstorms were located along a line
  extending from near North Bend to near Coon Valley, moving east at
  35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Emergency managment. At 130 pm trees and power lines were 
           reported down in the city of La Crosse. A boat was 
           flipped on French Island. 

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Sparta and Cashton around 200 PM CDT.
  Fort Mc Coy around 210 PM CDT.
  Tomah around 225 PM CDT.

Other locations impacted by these severe thunderstorms include County
Roads G And H, Portland, Highways 14 61 And County M M, Rockland,
County Roads D E And E, Highway 33 And County Y and I 90 Exit 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms have history of 
producing wind damage. SEEK SHELTER NOW inside a sturdy structure 
and stay away from windows! 

Torrential rainfall is occurring with these storms, and may lead to 
ponding of water on roads and in intersections. Do not drive your 
vehicle through flooded roadways.

&&

LAT...LON 4373 9114 4407 9115 4407 9093 4410 9050
      4373 9049
TIME...MOT...LOC 1835Z 268DEG 30KT 4405 9107 4374 9106 

HAIL...<.75IN
WIND...60MPH
 
$$

RRS

4 follow-up statements

236 
WWUS53 KARX 271849
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
149 PM CDT Thu Jun 27 2019

WIC063-081-271930-
/O.CON.KARX.SV.W.0027.000000T0000Z-190627T1930Z/
La Crosse WI-Monroe WI-
149 PM CDT Thu Jun 27 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR EASTERN LA CROSSE AND CENTRAL MONROE COUNTIES...

At 148 PM CDT, severe thunderstorms were located along a line
extending from near Cataract to near Coon Valley, moving east at 35
mph.

HAZARD...60 mph wind gusts.

SOURCE...Trained weather spotters. At 140 pm, 40 to 50 mph wind 
         gusts were reported in West Salem. 

IMPACT...Expect damage to roofs, siding, and trees.

These severe storms will be near...
  Sparta and Cashton around 200 PM CDT.
  Fort Mc Coy around 210 PM CDT.
  Tomah around 225 PM CDT.

Other locations impacted by these severe thunderstorms include County
Roads G And H, Portland, Rockland, County Roads D E And E, Highway 33
And County Y, Newburg Corners and Four Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4373 9103 4407 9105 4407 9093 4410 9050
      4373 9049
TIME...MOT...LOC 1848Z 268DEG 30KT 4405 9094 4374 9093 

HAIL...<.75IN
WIND...60MPH
 
$$

RRS

563 
WWUS53 KARX 271900
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
200 PM CDT Thu Jun 27 2019

WIC063-271909-
/O.CAN.KARX.SV.W.0027.000000T0000Z-190627T1930Z/
La Crosse WI-
200 PM CDT Thu Jun 27 2019

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN LA CROSSE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
west central Wisconsin.

LAT...LON 4373 9091 4407 9091 4410 9050 4373 9049
TIME...MOT...LOC 1859Z 268DEG 30KT 4406 9082 4375 9081 

$$

WIC081-271930-
/O.CON.KARX.SV.W.0027.000000T0000Z-190627T1930Z/
Monroe WI-
200 PM CDT Thu Jun 27 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR CENTRAL MONROE COUNTY...

At 159 PM CDT, severe thunderstorms were located along a line
extending from near Cataract to Cashton, moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

These severe storms will be near...
  Fort Mc Coy around 210 PM CDT.
  Tomah around 225 PM CDT.

Other locations impacted by these severe thunderstorms include Oil
City, St Marys, Portland, County Roads I And I I, Jackson Pass,
Wilton and Tunnel City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4373 9091 4407 9091 4410 9050 4373 9049
TIME...MOT...LOC 1859Z 268DEG 30KT 4406 9082 4375 9081 

HAIL...<.75IN
WIND...60MPH
 
$$

RRS

371 
WWUS53 KARX 271911
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
211 PM CDT Thu Jun 27 2019

WIC081-271930-
/O.CON.KARX.SV.W.0027.000000T0000Z-190627T1930Z/
Monroe WI-
211 PM CDT Thu Jun 27 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
FOR CENTRAL MONROE COUNTY...

At 210 PM CDT, severe thunderstorms were located along a line
extending from near Fort Mc Coy to near Cashton, moving east at 35
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Trained weather spotters. At 209 pm, trees and branches 
         were reported down in and north of Sparta. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Tomah around 225 PM CDT.

Other locations impacted by these severe thunderstorms include Oil
City, St Marys, County Roads I And I I, Jackson Pass, Wilton, Tunnel
City and I 94 Exit 143.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4373 9079 4392 9078 4407 9091 4410 9050
      4373 9049
TIME...MOT...LOC 1910Z 268DEG 30KT 4406 9069 4375 9068 

HAIL...1.00IN
WIND...60MPH
 
$$

RRS

878 
WWUS53 KARX 271926
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
226 PM CDT Thu Jun 27 2019

WIC081-271933-
/O.EXP.KARX.SV.W.0027.000000T0000Z-190627T1930Z/
Monroe WI-
226 PM CDT Thu Jun 27 2019

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONROE COUNTY WILL
EXPIRE AT 230 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds of 30 to 45 mph and brief heavy rains are still possible with 
these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
west central Wisconsin.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
La Crosse.

LAT...LON 4373 9079 4392 9078 4407 9091 4410 9050
      4373 9049
TIME...MOT...LOC 1923Z 268DEG 30KT 4406 9054 4375 9053 

$$

RRS

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 27, 11:58 AM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, Jun 27, 11:58 AM CDT, 1 hour 39 minutes before

Area Forecast Discussion
National Weather Service La Crosse WI
1158 AM CDT Thu Jun 27 2019

.SHORT TERM...(Today through Friday Night)
Issued at 231 AM CDT Thu Jun 27 2019

Main concern will be the potential for severe thunderstorms this
afternoon with damaging wind the main threat along with large hail.
Heavy rain potential as well going into tonight with some localized
flooding possible.

Quiet right now across the area early this morning as a ridge of
high pressure was passing overhead. GOES IR showing mostly clear
skies as of 2 am with temperatures ranging from the middle 50s in
the favored cool spots of central WI, to the middle/upper 60s
elsewhere.

Monitoring complex of thunderstorms across western Dakotas this
morning. This complex is forecast to weaken somewhat this morning
with remnant MCV progress eastward toward the area by late
morning/early afternoon. Increasing moisture transport/heating ahead
of the MCV is expected to re-energize thunderstorms per latest CAMs
showing strong quasi-linear complex pushing into the area in the 18-
19z timeframe. Plenty of CAPE for fuel but there is the question of
whether storms can become rooted in the boundary layer for
widespread damaging wind threat. Latest RAP sounding showing CAP
eroding with the approach of this convection, so this would suggest
becoming rooted. Of note is the latest 04z ESRL HRRR which shows
pockets of 35 to 45kt max hrly gusts. Previous 02z HRRR output was
showing pockets of 50-55kt...so maybe remaining a bit more elevated
per latest trends? Cape of 2500-4500J/Kg would suggest some larger
hail potential. Will have to keep an eye on how this complex behaves
and how our environment evolves ahead of it. Otherwise, plan on
highs today well into the 80s despite increasing cloud cover and
convection.

Some CAMs suggesting this complex throwing out a boundary for
increasing moisture transport this evening/tonight to focus on for
additional storm development. Preciptable water values creeping into
the 1.5-2 inch range will likely produce some very efficient heavy
rain-makers. If storms anchor/train, could see some localized
flooding problems.

Lingering frontal boundary from eastern WI into northern IA Friday
into Friday night will be the focus/trigger for additional
shower/thunderstorm chances. Otherwise, an increasing warm/humid day
on tap friday. Highs will again be well into the 80s with dew points
in the upper 60s/lower 70s. Low Friday night will be in the
60s/lower 70s.

.LONG TERM...(Saturday through Wednesday)
Issued at 231 AM CDT Thu Jun 27 2019

Increasing heat and humidity Saturday through Sunday as upper level
ridge amplifies across the region. Highs are expected to be in the
upper 80s to the mid 90s with dew points mainly in the lower 70s.
This will produce maximum afternoon heat indices in the 95-105
range. May need eventual headlines for this heat. There may also be
a small chance showers/thunderstorms Sat N/Sun as there are some
indications of a weak wave coming around the top of the ridge.

A cold front drives southward into the area Sunday night/Monday for
a chance of showers/storms. Highs Monday look to back down into the
80-90 degree range with slightly lower humidity.

Flattening ridge/more high zonal flow Tues into Wednesday brings a
couple weak troughs through the region for shower/thunder chances.
Otherwise, remaining warm with slightly elevated humidity.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1158 AM CDT Thu Jun 27 2019

Line of TSRA will move through KLSE early this afternoon with IFR
visibilities along with strong winds of 30 to 40 kts. Behind this
initial line of storms, there likely will be a break in more
widespread SHRA/T following this complex of storms, but a second
round of TSRA is still expected later this evening or overnight.
However, adjustments in timing will likely be needed as trends
become clearer. Winds will generally remain southerly outside of
storms into Friday.

&&

.HYDROLOGY...Today into Tonight
Issued at 231 AM CDT Thu Jun 27 2019

Moisture and instability will be increasing over the area today into
tonight, with potential for storms to train and repeat over some
locations. Where this occurs is uncertain yet, but given higher
available moisture, any storm will be capable of producing downpours
and locally heavy rains. These heavier rains falling on generally
moist soils could produce excessive runoff and the threat of
flooding or flash flooding.

&&

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

SHORT TERM...DAS
LONG TERM....DAS
AVIATION...JM
HYDROLOGY....DAS

Hazardous weather outlook, Jun 27, 9:17 AM CDT, 4 hours 20 minutes before

Hazardous Weather Outlook
National Weather Service La Crosse WI
917 AM CDT Thu Jun 27 2019

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-281430-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
917 AM CDT Thu Jun 27 2019

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

.DAY ONE...Today and Tonight

Strong to severe storms are possible through this evening. Strong
to damaging wind and torrential downpours along with some
localized flooding are the main threats. Some large hail is also
possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

On and off thunderstorm chances are expected Friday through
next Wednesday. While the severe weather threat looks low, it
remains too early to determine the severe weather risk details
for each day.

Increasing temperatures and humidity will yield heat indices
in the 95 to 105 range over the weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through this evening.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

In the hours before

Local storm report, Jun 27, 1:21 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
121 PM CDT THU JUN 27 2019

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

0116 PM     TSTM WND GST     LA CROSSE AIRPORT       43.87N 91.26W
06/27/2019  M44 MPH          LA CROSSE          WI   ASOS

&&

SHEA

Local storm report, Jun 27, 1:28 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
128 PM CDT THU JUN 27 2019

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

1235 PM     HAIL             ELMA                    43.24N 92.44W
06/27/2019  M1.00 INCH       HOWARD             IA   PUBLIC

&&

CA

Local storm report, Jun 27, 1:29 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
129 PM CDT THU JUN 27 2019

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

0122 PM     TSTM WND GST     LA CROSSE AIRPORT       43.87N 91.26W
06/27/2019  M51 MPH          LA CROSSE          WI   ASOS

&&

SHEA

Special weather statement, Jun 27, 1:30 PM CDT, 7 minutes before

Special Weather Statement
National Weather Service La Crosse WI
130 PM CDT Thu Jun 27 2019

WIZ017-029-034-271900-
Jackson-Taylor-Clark-
130 PM CDT Thu Jun 27 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CLARK...JACKSON AND
SOUTHERN TAYLOR COUNTIES...

At 126 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Stanley to 6 miles west of Black
River Falls. Movement was east at 30 mph.

Wind gusts of 30 to 50 mph and up to one half inch hail are
possible with these storms.

These storms will be near...
  Thorp around 135 PM CDT.
  Owen around 150 PM CDT.
  Millston around 155 PM CDT.
  Neillsville around 200 PM CDT.

Other locations impacted by these storms include Highway 73 And 98,
Polley, Shamrock, The Black River Correctional Center, Atwood,
Tioga, Potters Flowage, Perry Creek Recreation Area, Lynn and North
Branch.

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

LAT...LON 4524 9008 4512 9009 4512 9020 4503 9020
      4503 9031 4416 9031 4416 9091 4413 9098
      4407 9097 4407 9111 4460 9103 4460 9092
      4512 9093
TIME...MOT...LOC 1828Z 269DEG 28KT 4503 9083 4429 9094

Lee

Local storm report, Jun 27, 1:33 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
133 PM CDT THU JUN 27 2019

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

0130 PM     TSTM WND DMG     LA CROSSE               43.83N 91.23W
06/27/2019                   LA CROSSE          WI   EMERGENCY MNGR

            TREES AND POWER LINES DOWN IN THE CITY OF LA
            CROSSE. BOAT FLIPPED OVER ON FRENCH ISLAND.

&&

CA

Local storm report, Jun 27, 1:34 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
134 PM CDT THU JUN 27 2019

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

0125 PM     TSTM WND GST     1 N ONALASKA            43.90N 91.23W
06/27/2019  M48 MPH          LA CROSSE          WI   TRAINED SPOTTER

&&

CA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 10:05 AM CDT	Special Weather Statement	ARX	Buffalo	85 min
Jun 27, 11:33 AM CDT	Special Weather Statement	ARX	Buffalo	57 min
Jun 27, 12:12 PM CDT	Special Weather Statement	ARX	Buffalo, La Crosse, Trempealeau	93 min
Jun 27, 12:23 PM CDT	Special Weather Statement	ARX	Clark, Taylor	82 min
Jun 27, 1:17 PM CDT	Special Weather Statement	ARX	Crawford, La Crosse, Monroe, Vernon	118 min
Jun 27, 1:30 PM CDT	Special Weather Statement	ARX	Clark, Jackson	30 min
Jun 27, 2:15 PM CDT	Special Weather Statement	ARX	Clark, Jackson	60 min
Jun 27, 2:23 PM CDT	Special Weather Statement	ARX	Adams, Grant, Juneau, Richland	82 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2019 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.