Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 151, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 22, 2020, 8:50 PM CDT for Mille Lacs County, Minnesota. It was in force for 27 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 22, 2020, 8:50 PM CDT (01:50 UTC)
- Expired
- Aug 22, 2020, 9:17 PM CDT
- In force
- 27 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Mille Lacs County, MN
The radar
The Duluth radar (KDLH), 134 km from the middle of the area, began a volume at 01:54 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, 1.8 hours before the alert went out and 147 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
- 462 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1416 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted.
319
WUUS53 KMPX 230150
SVRMPX
MNC095-230230-
/O.NEW.KMPX.SV.W.0151.200823T0150Z-200823T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
850 PM CDT Sat Aug 22 2020
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
Northern Mille Lacs County in east central Minnesota...
* Until 930 PM CDT.
* At 849 PM CDT, a severe thunderstorm was located over Mille Lacs
Lake, moving south at 25 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Vineland around 910 PM CDT.
Wahkon around 920 PM CDT.
Onamia around 930 PM CDT.
Other locations impacted by this severe thunderstorm include Bayview
and Lake Mille Lacs.
This includes Grand Casino Mille Lacs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If on or near Lake Mille Lacs, get away from the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 4608 9346 4606 9381 4621 9381 4622 9382
4624 9382 4625 9374 4625 9350
TIME...MOT...LOC 0149Z 354DEG 20KT 4628 9369
HAIL...1.50IN
WIND...60MPH
$$
Borghoff2 follow-up statements
265
WWUS53 KMPX 230204
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
904 PM CDT Sat Aug 22 2020
MNC095-230230-
/O.CON.KMPX.SV.W.0151.000000T0000Z-200823T0230Z/
Mille Lacs MN-
904 PM CDT Sat Aug 22 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHERN MILLE LACS COUNTY...
At 903 PM CDT, a severe thunderstorm was located near Vineland, or
on the western side of Mille Lacs Lake, moving south at 25 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
This severe storm will be near...
Onamia around 930 PM CDT.
Other locations impacted by this severe thunderstorm include Bayview
and Lake Mille Lacs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4608 9346 4606 9381 4621 9381 4622 9382
4624 9382 4625 9374 4625 9350
TIME...MOT...LOC 0203Z 001DEG 20KT 4621 9370
HAIL...1.50IN
WIND...60MPH
$$
Borghoff338
WWUS53 KMPX 230217
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
917 PM CDT Sat Aug 22 2020
MNC095-230227-
/O.CAN.KMPX.SV.W.0151.000000T0000Z-200823T0230Z/
Mille Lacs MN-
917 PM CDT Sat Aug 22 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MILLE LACS COUNTY 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.
LAT...LON 4608 9346 4606 9381 4621 9381 4622 9382
4624 9382 4625 9374 4625 9350
TIME...MOT...LOC 0216Z 354DEG 20KT 4613 9369
$$
BorghoffThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 8:24 PM CDT | Special Weather Statement | MPX | Mille Lacs | 66 min |
| Aug 22, 9:46 PM CDT | Special Weather Statement | MPX | Mille Lacs | 44 min |
| Aug 22, 10:14 PM CDT | Special Weather Statement | MPX | Stearns | 46 min |
| Aug 22, 10:36 PM CDT | Tornado Warning | MPX | Benton, Mille Lacs, Morrison | 24 min |
| Aug 22, 10:37 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Morrison, Stearns | 28 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2020Every severe thunderstorm warning in 2020
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.