Alert archive / Wisconsin / Special Weather Statements in 2021
Special Weather Statement, NWS Milwaukee, WI
NWS Milwaukee, WI issued this special weather statement at Oct 10, 2021, 8:30 AM CDT for Waukesha County, Wisconsin. It was in force for 45 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 10, 2021, 8:30 AM CDT (13:30 UTC)
- Expired
- Oct 10, 2021, 9:15 AM CDT
- In force
- 45 min
- Issued by
- NWS Milwaukee, WI
- Hail
- 0.00 in
- Wind
- 50
County Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 14 km from the middle of the area, began a volume at 13:33 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 1.5 hours before the alert went out and 165 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
- 559 J/kg
- Mixed-layer CIN
- -163 J/kg
- Mixed-layer LCL
- 987 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
236
WWUS83 KMKX 101330
SPSMKX
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
830 AM CDT Sun Oct 10 2021
WIZ059-064>066-070>072-101415-
Walworth WI-Waukesha WI-Milwaukee WI-Racine WI-Washington WI-
Jefferson WI-Kenosha WI-
830 AM CDT Sun Oct 10 2021
...Strong thunderstorms will impact portions of southwestern
Milwaukee, northeastern Walworth, Racine, Waukesha, southwestern
Washington, northeastern Jefferson and northwestern Kenosha Counties
through 915 AM CDT...
At 829 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles east of Johnson Creek to North Prairie
to 6 miles north of Lake Geneva. Movement was northeast at 45 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Northern Milwaukee, Waukesha, West Allis, Wauwatosa, New Berlin,
Brookfield, Greenfield, Menomonee Falls, Muskego, Greendale,
Pewaukee, Sussex, Hartland, Hales Corners, Lake Geneva, Mukwonago,
Delafield, Jackson, Elm Grove and Union Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4289 8852 4309 8880 4320 8853 4320 8842
4324 8842 4333 8819 4308 8799 4261 8797
4257 8847
TIME...MOT...LOC 1329Z 240DEG 40KT 4308 8865 4293 8844 4268 8840
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
$$
DDVThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 6:21 AM CDT | Special Weather Statement | MKX | Lafayette | 39 min |
| Oct 10, 7:07 AM CDT | Special Weather Statement | MKX | Green | 23 min |
| Oct 10, 7:30 AM CDT | Special Weather Statement | MKX | Rock | 30 min |
| Oct 10, 7:50 AM CDT | Special Weather Statement | MKX | Walworth | 25 min |
| Oct 10, 8:01 AM CDT | Special Weather Statement | MKX | Jefferson | 29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.