Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 101, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Sep 4, 2018, 4:47 PM CDT for Olmsted County, Wabasha County, Winona County, Minnesota. It was in force for 30 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
- Sep 4, 2018, 4:47 PM CDT (21:47 UTC)
- Expired
- Sep 4, 2018, 5:17 PM CDT
- In force
- 30 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Olmsted County, MN, Wabasha County, MN, Winona County, MN
The radar
The La Crosse radar (KARX), 71 km from the middle of the area, began a volume at 21:49 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 |
|---|---|---|---|
| Sep 4, 4:50 PM CDT | TSTM WND GST 40 | 2 Sse Elgin, MN | |
| Sep 4, 4:50 PM CDT | HAIL 0.75 | 2 Sse Elgin, MN | |
| Sep 4, 4:57 PM CDT | TSTM WND GST 55 | 4 Se Elgin, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 4, 3:35 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.8 hours before the alert went out and 152 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
- 106 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 667 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
276
WUUS53 KARX 042147
SVRARX
MNC109-157-169-042230-
/O.NEW.KARX.SV.W.0101.180904T2147Z-180904T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
447 PM CDT TUE SEP 4 2018
The National Weather Service in La Crosse has issued a
* Severe Thunderstorm Warning for...
Northwestern Winona County in southeastern Minnesota...
Northeastern Olmsted County in southeastern Minnesota...
Southeastern Wabasha County in southeastern Minnesota...
* Until 530 PM CDT.
* At 447 PM CDT, a severe thunderstorm was located over Elgin, or 13
miles northeast of Rochester, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Plainview around 500 PM CDT.
Altura around 515 PM CDT.
Kellogg around 520 PM CDT.
Rollingstone around 525 PM CDT.
Alma, Winona, Buffalo City and Goodview around 530 PM CDT.
Other locations impacted by this severe thunderstorm include Viola,
West Newton, Minnesota City, Elba and Minneiska.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
&&
A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Minnesota...and west central Wisconsin.
LAT...LON 4435 9195 4433 9192 4431 9191 4429 9193
4427 9190 4420 9187 4416 9180 4413 9175
4413 9173 4410 9171 4408 9166 4403 9226
4417 9237
TIME...MOT...LOC 2147Z 247DEG 24KT 4410 9223
HAIL...1.00IN
WIND...60MPH
$$
Baumgardt2 follow-up statements
123
WWUS53 KARX 042205
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
505 PM CDT TUE SEP 4 2018
MNC109-042214-
/O.CAN.KARX.SV.W.0101.000000T0000Z-180904T2230Z/
Olmsted MN-
505 PM CDT TUE SEP 4 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OLMSTED COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Minnesota...and west central Wisconsin.
LAT...LON 4435 9195 4433 9192 4431 9191 4429 9193
4427 9190 4420 9187 4416 9180 4413 9175
4413 9173 4410 9171 4408 9166 4411 9222
4421 9227
TIME...MOT...LOC 2204Z 247DEG 24KT 4414 9208
$$
MNC157-169-042230-
/O.CON.KARX.SV.W.0101.000000T0000Z-180904T2230Z/
Winona MN-Wabasha MN-
505 PM CDT TUE SEP 4 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN WINONA AND SOUTHEASTERN WABASHA COUNTIES...
At 504 PM CDT, a severe thunderstorm was located near Plainview, or
15 miles southwest of Alma, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and torrential rainfall.
SOURCE...Trained weather spotters reported winds of 40 mph and dime-
sized hail with this storm southwest of Elgin at 450 pm.
IMPACT...Expect damage to roofs, siding, and trees.
This severe storm will be near...
Kellogg around 525 PM CDT.
Alma, Winona, Buffalo City and Rollingstone around 530 PM CDT.
Other locations impacted by this severe thunderstorm include West
Newton, Minnesota City, Minneiska, Beaver and Pioneer Campground.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for damaging winds and visibility near zero in
heavy rain. People outside should move to a shelter, inside a strong
building and away from windows.
&&
A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Minnesota...and west central Wisconsin.
LAT...LON 4435 9195 4433 9192 4431 9191 4429 9193
4427 9190 4420 9187 4416 9180 4413 9175
4413 9173 4410 9171 4408 9166 4411 9222
4421 9227
TIME...MOT...LOC 2204Z 247DEG 24KT 4414 9208
HAIL...<.75IN
WIND...60MPH
$$
Baumgardt137
WWUS53 KARX 042217
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
517 PM CDT TUE SEP 4 2018
MNC157-169-042226-
/O.CAN.KARX.SV.W.0101.000000T0000Z-180904T2230Z/
Winona MN-Wabasha MN-
517 PM CDT TUE SEP 4 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WINONA AND
SOUTHEASTERN WABASHA COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for southeastern
Minnesota...and west central Wisconsin.
A flash Flood Watch is in effect tonight. Heavy rainfall and
flooding is the biggest threat tonight.
LAT...LON 4435 9195 4433 9192 4431 9191 4429 9193
4427 9190 4420 9187 4416 9180 4413 9175
4413 9173 4410 9171 4408 9166 4411 9222
4421 9227
TIME...MOT...LOC 2214Z 247DEG 24KT 4417 9198
$$
BaumgardtThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 9:17 PM CDT | Flash Flood Warning | ARX | Houston | 9 hr |
| Sep 4, 4:00 AM CDT | Flash Flood Watch | ARX | Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more | 33 hr |
| Sep 4, 11:23 AM CDT | River Flood Warning | ARX | Mower | 62 hr |
| Sep 4, 11:23 AM CDT | River Flood Warning | ARX | Houston | 17 hr |
| Sep 4, 2:34 PM CDT | Special Weather Statement | ARX | Mower | 56 min |
| Sep 4, 3:01 PM CDT | Special Weather Statement | ARX | Dodge, Olmsted, Wabasha, Winona | 89 min |
| Sep 4, 6:19 PM CDT | Special Weather Statement | ARX | Dodge, Fillmore, Mower, Olmsted, Wabasha, Winona | 86 min |
| Sep 4, 6:22 PM CDT | Flash Flood Warning | ARX | Dodge, Mower, Olmsted, Wabasha | 3 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2018Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.