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 Aug 27, 2021, 12:56 AM CDT for Martin 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
- Aug 27, 2021, 12:56 AM CDT (05:56 UTC)
- Expired
- Aug 27, 2021, 1:30 AM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.88 in
- Wind
- 30
County Martin County, MN
The radar
The Sioux Falls radar (KFSD), 157 km from the middle of the area, began a volume at 05:58 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, 5.9 hours before the alert went out and 162 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
- 792 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 393 m²/s²
- 0-3 km storm-relative helicity
- 392 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
730
WWUS83 KMPX 270556
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1256 AM CDT Fri Aug 27 2021
MNZ091-270630-
Martin MN-
1256 AM CDT Fri Aug 27 2021
...A strong thunderstorm will impact portions of northwestern Martin
County through 130 AM CDT...
At 1254 AM CDT, Doppler radar was tracking a strong thunderstorm near
Sherburn, or 10 miles northeast of Jackson In Jackson County, moving
northeast at 25 mph.
HAZARD...Winds in excess of 30 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
This strong thunderstorm will be near...
Sherburn around 100 AM CDT.
Trimont and Welcome around 110 AM CDT.
This includes Interstate 90 between mile markers 81 and 95.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4359 9486 4374 9486 4383 9476 4370 9454
4356 9481
TIME...MOT...LOC 0554Z 229DEG 21KT 4368 9480
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH
$$
CEOThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 2:06 AM CDT | Flash Flood Warning | MPX | Freeborn | 5 hr |
| Aug 27, 2:59 AM CDT | Special Weather Statement | MPX | Brown, Faribault, Martin, Redwood, Watonwan | 3 hr |
| Aug 27, 4:09 AM CDT | Flash Flood Warning | MPX | Faribault, Freeborn | 3 hr |
| Aug 27, 6:12 AM CDT | Special Weather Statement | MPX | Ramsey | 2 hr |
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.