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 5, 2021, 10:42 PM CDT for Washington County, Minnesota. It was in force for 33 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 5, 2021, 10:42 PM CDT (03:42 UTC)
- Expired
- Aug 5, 2021, 11:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Twin Cities, MN
- Hail
- 0.88 in
- Wind
- 40
County Washington County, MN
The radar
The Minneapolis radar (KMPX), 55 km from the middle of the area, began a volume at 03:46 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, 3.7 hours before the alert went out and 57 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
- 2006 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1023 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
488
WWUS83 KMPX 060342
SPSMPX
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1042 PM CDT Thu Aug 5 2021
MNZ062-063-070-060415-
Washington MN-Dakota MN-Ramsey MN-
1042 PM CDT Thu Aug 5 2021
...A strong thunderstorm will impact portions of northeastern Dakota,
southern Washington and southeastern Ramsey Counties through 1115 PM
CDT...
At 1041 PM CDT, Doppler radar was tracking a strong thunderstorm over
Woodbury, or 10 miles east of St. Paul, moving east at 20 mph.
HAZARD...Winds in excess of 40 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...
Afton around 1045 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4479 9313 4501 9314 4502 9276 4497 9277
4494 9275 4491 9276 4490 9278 4482 9277
4477 9281 4474 9280
TIME...MOT...LOC 0341Z 281DEG 16KT 4490 9290
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
$$
JRBThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 7:57 PM CDT | Special Weather Statement | MPX | Anoka | 33 min |
| Aug 5, 8:32 PM CDT | Special Weather Statement | MPX | Washington | 43 min |
| Aug 5, 8:38 PM CDT | Special Weather Statement | MPX | Dakota | 37 min |
| Aug 5, 8:47 PM CDT | Special Weather Statement | MPX | Sibley | 28 min |
| Aug 5, 9:02 PM CDT | Special Weather Statement | MPX | Chisago | 43 min |
| Aug 5, 9:38 PM CDT | Special Weather Statement | MPX | Washington | 52 min |
| Aug 5, 8:20 PM CDT | Special Weather Statement | MPX | Polk | 40 min |
| Aug 5, 11:40 PM CDT | Special Weather Statement | MPX | Pierce | 65 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.