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, 1:06 PM CDT for Chisago County, Minnesota. It was in force for 24 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, 1:06 PM CDT (18:06 UTC)
- Expired
- Oct 20, 2021, 1:30 PM CDT
- In force
- 24 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.50 in
- Wind
- 30
County Chisago County, MN
The radar
The Minneapolis radar (KMPX), 73 km from the middle of the area, began a volume at 18:09 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, 6.1 hours before the alert went out and 75 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.
840
WWUS83 KMPX 201806
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
106 PM CDT Wed Oct 20 2021
MNZ053-063-WIZ014-201830-
Washington MN-Chisago MN-Polk WI-
106 PM CDT Wed Oct 20 2021
...A strong thunderstorm will impact portions of southeastern
Chisago, northern Washington and south central Polk Counties through
130 PM CDT...
At 106 PM CDT, Doppler radar was tracking a strong thunderstorm near
Hugo, or 19 miles northeast of St. Paul, moving north at 30 mph.
HAZARD...Half inch hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to outdoor objects is possible.
This strong thunderstorm will be near...
Forest Lake and Scandia around 120 PM CDT.
Other locations in the path of this storm include Chisago City,
Lindstrom, Osceola, Taylors Falls and Center City.
This includes the following highways...
Interstate 35 between mile markers 131 and 139, and near mile marker
141.
U.S. Highway 8 in Minnesota between mile markers 0 and 5, and
between mile markers 7 and 22.
U.S. Highway 61 between mile markers 163 and 164.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4552 9258 4521 9273 4520 9277 4517 9275
4508 9279 4511 9299 4512 9299 4513 9302
4520 9303 4558 9296
TIME...MOT...LOC 1806Z 196DEG 28KT 4517 9289
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, 11:41 AM CDT | Special Weather Statement | MPX | Dakota | 34 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.