Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 142, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 31, 2018, 6:10 AM CDT for Blue Earth County, Steele County, Waseca County, Minnesota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2018, 6:10 AM CDT (11:10 UTC)
- Expired
- Aug 31, 2018, 6:45 AM CDT
- In force
- 35 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Blue Earth County, MN, Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 11:10 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, 11.2 hours before the alert went out and 89 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
- 1307 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 354 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
304
WUUS53 KMPX 311110
SVRMPX
MNC013-147-161-311200-
/O.NEW.KMPX.SV.W.0142.180831T1110Z-180831T1200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
610 AM CDT FRI AUG 31 2018
The National Weather Service in The Twin Cities has issued a
* Severe Thunderstorm Warning for...
Northwestern Steele County in south central Minnesota...
Southeastern Blue Earth County in south central Minnesota...
Waseca County in south central Minnesota...
* Until 700 AM CDT.
* At 609 AM CDT, severe thunderstorms were located along a line
extending from near Janesville to near Pemberton, moving east at 30
mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Severe thunderstorms will be near...
Waseca around 645 AM CDT.
Medford around 650 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4391 9395 4419 9378 4420 9330 4419 9324
4391 9335
TIME...MOT...LOC 1109Z 249DEG 25KT 4414 9363 4399 9382
HAIL...1.25IN
WIND...<50MPH
$$
BORGHOFF2 follow-up statements
531
WWUS53 KMPX 311127
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
627 AM CDT FRI AUG 31 2018
MNC013-311136-
/O.CAN.KMPX.SV.W.0142.000000T0000Z-180831T1200Z/
Blue Earth MN-
627 AM CDT FRI AUG 31 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BLUE EARTH COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4391 9377 4404 9374 4419 9364 4420 9330
4419 9324 4391 9335
TIME...MOT...LOC 1126Z 256DEG 21KT 4414 9354 4401 9368
$$
MNC147-161-311200-
/O.CON.KMPX.SV.W.0142.000000T0000Z-180831T1200Z/
Steele MN-Waseca MN-
627 AM CDT FRI AUG 31 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 AM CDT
FOR NORTHWESTERN STEELE AND WASECA COUNTIES...
At 626 AM CDT, severe thunderstorms were located along a line
extending from near Waseca to near Alma City, moving east at 25 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
These severe storms will be near...
Waseca around 645 AM CDT.
Medford around 700 AM CDT.
Other locations impacted by these severe thunderstorms include Waseca
Airport, Otisco, Alma City, Lemond, Deerfield and Hope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4391 9377 4404 9374 4419 9364 4420 9330
4419 9324 4391 9335
TIME...MOT...LOC 1126Z 256DEG 21KT 4414 9354 4401 9368
HAIL...1.00IN
WIND...<50MPH
$$
BORGHOFF741
WWUS53 KMPX 311145
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
645 AM CDT FRI AUG 31 2018
MNC147-161-311154-
/O.CAN.KMPX.SV.W.0142.000000T0000Z-180831T1200Z/
Steele MN-Waseca MN-
645 AM CDT FRI AUG 31 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN STEELE AND WASECA
COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail is
still possible with these thunderstorms.
LAT...LON 4391 9377 4404 9374 4419 9364 4420 9330
4419 9324 4391 9335
TIME...MOT...LOC 1143Z 249DEG 25KT 4418 9339 4405 9353
$$
BORGHOFFThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 7:24 AM CDT | Severe Thunderstorm Warning | MPX | Freeborn, Steele, Waseca | 34 min |
| Aug 31, 8:00 AM CDT | Special Weather Statement | MPX | Steele | 15 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.