Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 1, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 10, 2021, 5:27 PM CST for Dakota County, Ramsey County, Washington County, Minnesota. It was in force for 29 min. 6 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
- Mar 10, 2021, 5:27 PM CST (23:27 UTC)
- Expired
- Mar 10, 2021, 5:56 PM CST
- In force
- 29 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Dakota County, MN, Ramsey County, MN, Washington County, MN
The radar
The Minneapolis radar (KMPX), 50 km from the middle of the area, began a volume at 23:28 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 |
|---|---|---|---|
| Mar 10, 5:27 PM CST | HAIL 1.75 | 3 Sw Inver Grove Height, MN | LARGE CONGLOMERATE HAIL STONES VIA PHOTOS. |
| Mar 10, 5:28 PM CST | HAIL 1.75 | 2 Sw Inver Grove Height, MN | LARGE CONGLOMERATE HAIL STONES. |
| Mar 10, 5:33 PM CST | HAIL 1.25 | South St. Paul, MN | VIA PHOTO. |
| Mar 10, 5:33 PM CST | HAIL 2.5 | 2 W Inver Grove Height, MN | LARGE CONGLOMERATE HAIL STONE VIA PHOTO. MEASUREMENT IS FROM SPIKE TO SPIKE. LOCATION ESTIMATED VIA RADAR. |
| Mar 10, 5:38 PM CST | HAIL 2 | South St. Paul, MN | PHOTO WITH SEVERAL LARGE, SPIKED HAIL STONES. |
| Mar 10, 5:45 PM CST | HAIL 0.7 | 3 Sse Lake Elmo, 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 |
|---|---|---|---|
| Mar 10, 2:46 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 53 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
- 946 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
475
WUUS53 KMPX 102327
SVRMPX
MNC037-123-163-110015-
/O.NEW.KMPX.SV.W.0001.210310T2327Z-210311T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
527 PM CST Wed Mar 10 2021
The National Weather Service in the Twin Cities has issued a
* Severe Thunderstorm Warning for...
North central Dakota County in east central Minnesota...
Southern Washington County in east central Minnesota...
Southeastern Ramsey County in east central Minnesota...
* Until 615 PM CST.
* At 527 PM CST, a severe thunderstorm was located over Inver Grove
Heights, or 10 miles south of St. Paul, moving northeast at 30 mph.
HAZARD...Half dollar size hail.
SOURCE...Public.
IMPACT...Damage to vehicles is expected.
* This severe thunderstorm will be near...
St. Paul Park around 535 PM CST.
Cottage Grove and South St. Paul around 540 PM CST.
Woodbury around 550 PM CST.
Afton around 555 PM CST.
Lake Elmo and Bayport around 605 PM CST.
Stillwater around 610 PM CST.
Other locations impacted by this severe thunderstorm include Newport,
Lake Phalen, Grant, Lake St Croix Beach, Willernie, Lakeland Shores,
St Paul Battlecreek Regional Park, North St. Paul, St Paul Park and
St Marys Point.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM CST for east central
Minnesota.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4481 9314 4492 9311 4511 9297 4501 9276
4497 9277 4494 9275 4492 9276 4474 9302
TIME...MOT...LOC 2327Z 222DEG 28KT 4479 9306
HAIL...1.25IN
WIND...<50MPH
$$
ETA2 follow-up statements
512
WWUS53 KMPX 102344
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
544 PM CST Wed Mar 10 2021
MNC037-123-102353-
/O.CAN.KMPX.SV.W.0001.000000T0000Z-210311T0015Z/
Dakota MN-Ramsey MN-
544 PM CST Wed Mar 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL DAKOTA AND
SOUTHEASTERN RAMSEY COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4490 9297 4492 9299 4511 9297 4501 9276
4497 9277 4494 9275 4492 9276 4486 9284
TIME...MOT...LOC 2343Z 222DEG 28KT 4489 9294
$$
MNC163-110015-
/O.CON.KMPX.SV.W.0001.000000T0000Z-210311T0015Z/
Washington MN-
544 PM CST Wed Mar 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CST
FOR CENTRAL WASHINGTON COUNTY...
At 543 PM CST, a severe thunderstorm was located over Woodbury, or 9
miles southeast of St. Paul, moving northeast at 30 mph.
HAZARD...Half dollar size hail.
SOURCE...Public.
IMPACT...Damage to vehicles is expected.
This severe storm will be near...
Afton around 555 PM CST.
Lake Elmo and Bayport around 605 PM CST.
Stillwater around 610 PM CST.
Other locations impacted by this severe thunderstorm include Grant,
Lake St Croix Beach, Lakeland, Willernie, Lakeland Shores, Pine
Springs, Landfall, St Marys Point, Lake Elmo Airport and Birchwood
Village.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
&&
LAT...LON 4490 9297 4492 9299 4511 9297 4501 9276
4497 9277 4494 9275 4492 9276 4486 9284
TIME...MOT...LOC 2343Z 222DEG 28KT 4489 9294
HAIL...1.25IN
WIND...<50MPH
$$
ETA549
WWUS53 KMPX 102356
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
556 PM CST Wed Mar 10 2021
MNC163-110006-
/O.CAN.KMPX.SV.W.0001.000000T0000Z-210311T0015Z/
Washington MN-
556 PM CST Wed Mar 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WASHINGTON COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 4490 9297 4492 9299 4511 9297 4501 9276
4497 9277 4494 9275 4492 9276 4486 9284
TIME...MOT...LOC 2355Z 222DEG 28KT 4497 9284
$$
ETAThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 10, 3:39 AM CST | Winter Weather Advisory | MPX | Chippewa, Douglas, Lac qui Parle, Morrison, Pope, Stearns and 3 more | 20 hr |
| Mar 10, 3:40 AM CST | Wind Advisory | MPX | Blue Earth, Dakota, Faribault, Freeborn, Goodhue, Le Sueur and 7 more | 23 hr |
| Mar 10, 12:06 PM CST | Winter Storm Warning | MPX | Douglas, Pope, Stevens, Todd | 12 hr |
| Mar 10, 4:03 PM CST | Special Weather Statement | MPX | Le Sueur | 27 min |
| Mar 10, 4:13 PM CST | Tornado Warning | MPX | Dakota, Rice, Scott | 14 min |
| Mar 10, 4:23 PM CST | Tornado Warning | MPX | Le Sueur, Rice, Waseca | 26 min |
| Mar 10, 4:36 PM CST | Tornado Warning | MPX | Dakota, Rice, Scott | 24 min |
| Mar 10, 4:47 PM CST | Tornado Warning | MPX | Dakota, Rice | 28 min |
| Mar 10, 4:54 PM CST | Special Weather Statement | MPX | McLeod | 36 min |
| Mar 10, 5:15 PM CST | Tornado Warning | MPX | Dakota, Rice | 30 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2021Every severe thunderstorm warning 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.