Alert archive / Minnesota / Tornado Warnings in 2021
Tornado Warning 18, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 28, 2021, 12:04 PM CDT for Benton County, Mille Lacs County, Minnesota. It was in force for 41 min. 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
- Aug 28, 2021, 12:04 PM CDT (17:04 UTC)
- Expired
- Aug 28, 2021, 12:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 2.5 in
Counties Benton County, MN, Mille Lacs County, MN
The radar
The Minneapolis radar (KMPX), 93 km from the middle of the area, began a volume at 17:04 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 |
|---|---|---|---|
| Aug 28, 12:30 PM CDT | HAIL 1 | 2 Nw Foreston, MN | PICTURE MULTIPLE HAIL STONES UP TO THE SIZE OF QUARTERS. |
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 |
|---|---|---|---|
| Aug 28, 10:34 AM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 5.1 hours before the alert went out and 92 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
- 1550 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 676 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted.
340
WFUS53 KMPX 281704
TORMPX
MNC009-095-281745-
/O.NEW.KMPX.TO.W.0018.210828T1704Z-210828T1745Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
1204 PM CDT Sat Aug 28 2021
The National Weather Service in the Twin Cities has issued a
* Tornado Warning for...
Southern Mille Lacs County in east central Minnesota...
Southeastern Benton County in central Minnesota...
* Until 1245 PM CDT.
* At 1203 PM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located near
Foley, or 11 miles east of St. Cloud, moving east at 45 mph.
HAZARD...Tornado and tennis ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* These dangerous storms will be near...
Milaca and Foreston around 1225 PM CDT.
Princeton around 1230 PM CDT.
Bock around 1235 PM CDT.
Other locations impacted by this tornadic thunderstorm include Duelm,
Mayhew, Glendorado, Parent, Ronneby, Pease, Oak Park and Princeton
Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4572 9351 4556 9352 4556 9405 4570 9410
4581 9351
TIME...MOT...LOC 1703Z 259DEG 38KT 4563 9397
TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
$$2 follow-up statements
418
WWUS53 KMPX 281719
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1219 PM CDT Sat Aug 28 2021
MNC009-095-281745-
/O.CON.KMPX.TO.W.0018.000000T0000Z-210828T1745Z/
Mille Lacs MN-Benton MN-
1219 PM CDT Sat Aug 28 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT FOR SOUTHERN
MILLE LACS AND SOUTHEASTERN BENTON COUNTIES...
At 1219 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Foreston, or 23 miles east of St. Cloud, moving east at 45 mph.
HAZARD...Tornado and tennis ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
These dangerous storms will be near...
Milaca around 1225 PM CDT.
Princeton around 1230 PM CDT.
Bock around 1235 PM CDT.
Other locations impacted by this tornadic thunderstorm include Pease,
Oak Park, Glendorado, Ronneby and Princeton Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4572 9351 4556 9352 4556 9387 4572 9392
4581 9351
TIME...MOT...LOC 1719Z 259DEG 38KT 4566 9373
TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
$$339
WWUS53 KMPX 281735
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1235 PM CDT Sat Aug 28 2021
MNC009-095-281745-
/O.EXP.KMPX.TO.W.0018.000000T0000Z-210828T1745Z/
Mille Lacs MN-Benton MN-
1235 PM CDT Sat Aug 28 2021
...THE TORNADO WARNING FOR SOUTHERN MILLE LACS AND SOUTHEASTERN
BENTON COUNTIES WILL EXPIRE AT 1245 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 400 PM CDT for central and
east central Minnesota.
LAT...LON 4572 9351 4556 9352 4556 9387 4572 9392
4581 9351
TIME...MOT...LOC 1735Z 259DEG 38KT 4569 9349
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 8:21 PM CDT | Flash Flood Warning | MPX | Freeborn | 4 hr |
| Aug 27, 11:48 PM CDT | Special Weather Statement | MPX | Freeborn | 87 min |
| Aug 28, 8:14 AM CDT | Special Weather Statement | MPX | Stevens | 61 min |
| Aug 28, 9:27 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 33 min |
| Aug 28, 9:49 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stevens | 56 min |
| Aug 28, 9:54 AM CDT | Severe Thunderstorm Warning | MPX | Swift | 51 min |
| Aug 28, 10:31 AM CDT | Severe Thunderstorm Warning | MPX | Swift | 44 min |
| Aug 28, 10:41 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stearns, Todd | 49 min |
| Aug 28, 10:53 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 52 min |
| Aug 28, 11:20 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 40 min |
| Aug 28, 11:24 AM CDT | Tornado Warning | MPX | Stearns | 36 min |
| Aug 28, 11:32 AM CDT | Severe Thunderstorm Warning | MPX | Morrison, Todd | 43 min |
| Aug 28, 11:45 AM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs, Morrison, Sherburne | 45 min |
| Aug 28, 12:27 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Kanabec, Mille Lacs | 48 min |
| Aug 28, 12:43 PM CDT | Special Weather Statement | MPX | Anoka | 47 min |
| Aug 28, 1:07 PM CDT | Special Weather Statement | MPX | Chisago | 23 min |
| Aug 28, 1:29 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 46 min |
| Aug 28, 6:06 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood, Watonwan | 54 min |
| Aug 28, 6:19 PM CDT | Tornado Warning | MPX | Brown, Redwood | 26 min |
| Aug 28, 6:26 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Martin, Watonwan | 64 min |
| Aug 28, 6:43 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown, Nicollet, Redwood, Renville, Sibley and 1 more | 62 min |
| Aug 28, 6:51 PM CDT | Tornado Warning | MPX | Brown, Nicollet | 24 min |
Nearby
Tornado Warnings in Minnesota, 2021Every tornado warning in 2021Tornadoes in 2021
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.