Alert archive / Minnesota / Special Weather Statements in 2021
Special Weather Statement, NWS Twin Cities, MN
NWS Twin Cities, MN issued this special weather statement at Oct 20, 2021, 11:41 AM CDT for Dakota County, Minnesota. It was in force for 34 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
- Oct 20, 2021, 11:41 AM CDT (16:41 UTC)
- Expired
- Oct 20, 2021, 12:15 PM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.50 in
- Wind
- 30
County Dakota County, MN
The radar
The Minneapolis radar (KMPX), 34 km from the middle of the area, began a volume at 16:42 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 12:00Z, 4.7 hours before the alert went out and 36 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
- 1107 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
824
WWUS83 KMPX 201641
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1141 AM CDT Wed Oct 20 2021
MNZ060-062-069-070-201715-
Dakota MN-Hennepin MN-Ramsey MN-Scott MN-
1141 AM CDT Wed Oct 20 2021
...A strong thunderstorm will impact portions of southeastern
Hennepin, western Dakota and eastern Scott Counties through 1215 PM
CDT...
At 1141 AM CDT, Doppler radar was tracking a strong thunderstorm near
Farmington, or 11 miles north of Northfield, moving north at 40 mph.
HAZARD...Half inch hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to outdoor objects is possible.
This strong thunderstorm will be near...
Lakeville and Farmington around 1150 AM CDT.
Burnsville, Apple Valley and Rosemount around 1200 PM CDT.
Other locations in the path of this storm include Bloomington, Eagan,
Richfield, Inver Grove Heights, MSP International Airport, St. Paul,
South St. Paul, West St. Paul and Mendota Heights.
This includes Interstate 35 between mile markers 75 and 80.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4453 9328 4454 9328 4455 9342 4497 9336
4491 9299 4489 9299 4489 9302 4483 9301
4452 9315
TIME...MOT...LOC 1641Z 192DEG 35KT 4461 9325
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH
$$
NDCThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 1:06 PM CDT | Special Weather Statement | MPX | Chisago | 24 min |
| Oct 20, 1:57 PM CDT | Special Weather Statement | MPX | Polk | 33 min |
| Oct 20, 2:11 PM CDT | Special Weather Statement | MPX | Eau Claire, Pepin | 49 min |
Nearby
Special Weather Statements in Minnesota, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.