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, 2:59 AM CDT for 5 counties in Minnesota. It was in force for 3 hr. 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, 2:59 AM CDT (07:59 UTC)
- Expired
- Aug 27, 2021, 6:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
Counties Brown County, MN, Faribault County, MN, Martin County, MN, Redwood County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 128 km from the middle of the area, began a volume at 08:02 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, 8.0 hours before the alert went out and 126 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.
771
WWUS83 KMPX 270759
SPSMPX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Twin Cities/Chanhassen MN
259 AM CDT Fri Aug 27 2021
MNC013-015-043-047-091-127-165-173-271100-
Freeborn-Faribault-Redwood-Martin-Yellow Medicine-Brown-Blue
Earth-Watonwan-
259 AM CDT Fri Aug 27 2021
...URBAN AND SMALL STREAM FLOODING EXPECTED...
Thunderstorms with heavy rain will cause localized flooding in the
following counties...
Freeborn...Faribault...Redwood...Martin...Yellow Medicine...Brown...
Blue Earth...Watonwan...
* Until 600 AM CDT.
* At 257 AM CDT, Doppler radar indicated heavy rain due to
thunderstorms. This will cause urban and small stream flooding in
the area. Up to two inches of rain have already fallen.
* Some locations that will experience minor flooding include...
Fairmont, Redwood Falls, St. James, Sleepy Eye, Blue Earth,
Springfield, Winnebago, Sherburn, Truman, Morgan, Walnut Grove and
Lamberton.
Additional rainfall of 1 to 3 inches is possible over the area.
Additional rainfall could result in more significant impacts and
lead to the issuance of flash flood warnings for portions of the
area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4350 9485 4411 9486 4411 9509 4420 9512
4420 9559 4462 9561 4460 9524 4455 9504
4432 9462 4422 9452 4394 9438 4376 9410
4356 9332 4350 9362
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 12:56 AM CDT | Special Weather Statement | MPX | Martin | 34 min |
| Aug 27, 2:06 AM CDT | Flash Flood Warning | MPX | Freeborn | 5 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.