Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 39, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at May 17, 2017, 2:43 PM CDT for Columbia County, Sauk County, Wisconsin. It was in force for 47 min. 3 reports 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
- May 17, 2017, 2:43 PM CDT (19:43 UTC)
- Expired
- May 17, 2017, 3:30 PM CDT
- In force
- 47 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Columbia County, WI, Sauk County, WI
The radar
The Milwaukee radar (KMKX), 96 km from the middle of the area, began a volume at 19:44 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 |
|---|---|---|---|
| May 17, 2:45 PM CDT | TSTM WND DMG | 1 Wsw Merrimac, WI | SEVERAL TREES AND POWER LINES DOWN. |
| May 17, 3:16 PM CDT | HAIL 1 | 1 Se Portage, WI | |
| May 17, 3:18 PM CDT | HAIL 0.75 | 1 Sse Portage, WI | WITH TORRENTIAL RAIN. |
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, 7.7 hours before the alert went out and 154 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
- 1435 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
995
WUUS53 KMKX 171943
SVRMKX
WIC021-111-172030-
/O.NEW.KMKX.SV.W.0039.170517T1943Z-170517T2030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
243 PM CDT WED MAY 17 2017
The National Weather Service in Milwaukee/Sullivan has issued a
* Severe Thunderstorm Warning for...
Western Columbia County in south central Wisconsin...
East central Sauk County in south central Wisconsin...
* Until 330 PM CDT
* At 242 PM CDT, a severe thunderstorm was located near Prairie Du
Sac, moving northeast at 40 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Portage, Lake Wisconsin, Pardeeville, Merrimac, Interstate 90/94
Interchange and Okee.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4358 8923 4330 8967 4332 8977 4364 8958
4364 8935
TIME...MOT...LOC 1942Z 214DEG 36KT 4335 8969
HAIL...1.00IN
WIND...<50MPH
$$
SPM2 follow-up statements
890
WWUS53 KMKX 172005
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
305 PM CDT WED MAY 17 2017
WIC111-172014-
/O.CAN.KMKX.SV.W.0039.000000T0000Z-170517T2030Z/
Sauk WI-
305 PM CDT WED MAY 17 2017
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SAUK COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4364 8935 4358 8923 4338 8954 4345 8961
4345 8960 4350 8960 4364 8952
TIME...MOT...LOC 2004Z 214DEG 36KT 4354 8951
$$
WIC021-172030-
/O.CON.KMKX.SV.W.0039.000000T0000Z-170517T2030Z/
Columbia WI-
305 PM CDT WED MAY 17 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT
FOR NORTH CENTRAL COLUMBIA COUNTY...
At 304 PM CDT, a severe thunderstorm was located over Portage, moving
northeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Portage, Lake Wisconsin, Pardeeville and Interstate 90/94
Interchange.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4364 8935 4358 8923 4338 8954 4345 8961
4345 8960 4350 8960 4364 8952
TIME...MOT...LOC 2004Z 214DEG 36KT 4354 8951
HAIL...1.00IN
WIND...60MPH
$$
DDV428
WWUS53 KMKX 172022
SVSMKX
Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
322 PM CDT WED MAY 17 2017
WIC021-172032-
/O.EXP.KMKX.SV.W.0039.000000T0000Z-170517T2030Z/
Columbia WI-
322 PM CDT WED MAY 17 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL COLUMBIA COUNTY
WILL EXPIRE AT 330 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire. However small hail
and gusty winds are still possible with this thunderstorm.
A tornado watch remains in effect until 1100 PM CDT for south central
Wisconsin.
LAT...LON 4364 8935 4358 8923 4338 8954 4345 8961
4345 8960 4350 8960 4364 8952
TIME...MOT...LOC 2022Z 214DEG 36KT 4368 8938
$$
DDVThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 2:16 PM CDT | Special Weather Statement | MKX | Sauk | 29 min |
| May 17, 2:23 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Sauk | 22 min |
| May 17, 3:23 PM CDT | Special Weather Statement | MKX | Columbia, Green Lake | 52 min |
| May 17, 3:43 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake | 47 min |
| May 17, 5:57 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 18 min |
| May 17, 6:12 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 33 min |
| May 17, 6:40 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Rock, Walworth | 35 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2017Every severe thunderstorm warning in 2017
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.