Alert archive / Wisconsin / Special Weather Statements in 2021
Special Weather Statement, NWS Milwaukee, WI
NWS Milwaukee, WI issued this special weather statement at Aug 6, 2021, 6:53 PM CDT for Jefferson County, Milwaukee County, Waukesha County, Wisconsin. It was in force for 82 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 6, 2021, 6:53 PM CDT (23:53 UTC)
- Expired
- Aug 6, 2021, 8:15 PM CDT
- In force
- 82 min
- Issued by
- NWS Milwaukee, WI
- Hail
- 0.75 in
- Wind
- 50
Counties Jefferson County, WI, Milwaukee County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 44 km from the middle of the area, began a volume at 23:54 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 6, 8:08 PM CDT | HAIL 1 | 5 W Whitewater, WI | REPORT JUST OUTSIDE OF WHITEWATER ALONG COUNTY ROAD N OF QUARTER SIZE HAIL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.9 hours before the alert went out and 169 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
- 132 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
400
WWUS83 KMKX 062353
SPSMKX
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
653 PM CDT Fri Aug 6 2021
WIZ064>066-069>071-070115-
Walworth WI-Rock WI-Waukesha WI-Milwaukee WI-Racine WI-Jefferson WI-
653 PM CDT Fri Aug 6 2021
...Strong thunderstorms will impact portions of Milwaukee, northern
Walworth, northeastern Rock, northern Racine, Waukesha and Jefferson
Counties through 815 PM CDT...
At 651 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Butler to near Jefferson. Movement was east at
15 mph.
HAZARD...Wind gusts up to 50 mph and penny 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.
Locations impacted include...
Milwaukee, Waukesha, West Allis, Wauwatosa, New Berlin, Brookfield,
Greenfield, Menomonee Falls, Oak Creek, Muskego, South Milwaukee,
Cudahy, Whitewater, Whitefish Bay, Greendale, Pewaukee, Fort
Atkinson, Brown Deer, Sussex and St. Francis.
People attending The Wisconsin State Fair should seek safe shelter
immediately!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4279 8778 4278 8896 4315 8895 4315 8789
4312 8790 4310 8787 4307 8787 4305 8789
4302 8790 4296 8785 4288 8785 4285 8783
4281 8778
TIME...MOT...LOC 2351Z 282DEG 13KT 4311 8809 4296 8880
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
$$
HANSENThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 3:06 PM CDT | Special Weather Statement | MKX | Calumet | 24 min |
| Aug 6, 3:44 PM CDT | Special Weather Statement | MKX | Sheboygan | 31 min |
| Aug 6, 3:48 PM CDT | Special Marine Warning | MKX | 42 min | |
| Aug 6, 4:04 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 41 min |
| Aug 6, 4:09 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac | 39 min |
| Aug 6, 4:21 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 24 min |
| Aug 6, 4:23 PM CDT | Special Marine Warning | MKX | 52 min | |
| Aug 6, 4:38 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 52 min |
| Aug 6, 4:41 PM CDT | Special Marine Warning | MKX | 64 min | |
| Aug 6, 4:58 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson | 32 min |
| Aug 6, 5:06 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 24 min |
| Aug 6, 5:08 PM CDT | Special Marine Warning | MKX | 52 min | |
| Aug 6, 5:23 PM CDT | Special Marine Warning | MKX | 111 min | |
| Aug 6, 5:26 PM CDT | Special Weather Statement | MKX | Dodge, Ozaukee, Washington, Waukesha | 94 min |
| Aug 6, 6:22 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 38 min |
Nearby
Special Weather Statements in Wisconsin, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.