Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 216, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 6, 2012, 6:40 PM CDT for Saint Croix County, Wisconsin. It was in force for 65 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
- Jul 6, 2012, 6:40 PM CDT (23:40 UTC)
- Expired
- Jul 6, 2012, 7:45 PM CDT
- In force
- 65 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 96 km from the middle of the area, began a volume at 23:43 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 |
|---|---|---|---|
| Jul 6, 6:49 PM CDT | TSTM WND DMG | 2 Wnw Roberts, WI | SEVERAL TREES DOWN ALONG HWY12 EAST OF HUDSON...TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 6, 6:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 98 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
- 2912 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
119 WUUS53 KMPX 062340 SVRMPX WIC109-070045- /O.NEW.KMPX.SV.W.0216.120706T2340Z-120707T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 640 PM CDT FRI JUL 6 2012 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 745 PM CDT * AT 638 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR BURKHARDT...OR ABOUT 7 MILES SOUTHWEST OF NEW RICHMOND...AND MOVING EAST AT 20 MPH. LOCATIONS IN THE WARNING INCLUDE... NEW RICHMOND... BURKHARDT... SOMERSET... HOULTON... STAR PRAIRIE... ROBERTS... HAMMOND... DEER PARK... CYLON... BALDWIN... FOREST... WOODVILLE... EMERALD... GLENWOOD CITY... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4521 9218 4487 9215 4487 9275 4521 9271 TIME...MOT...LOC 2340Z 276DEG 17KT 4506 9265 WIND...HAIL 60MPH 1.00IN $$
1 follow-up statement
892
WWUS53 KMPX 070010
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
710 PM CDT FRI JUL 6 2012
WIC109-070045-
/O.CON.KMPX.SV.W.0216.000000T0000Z-120707T0045Z/
ST. CROIX WI-
710 PM CDT FRI JUL 6 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ST. CROIX
COUNTY UNTIL 745 PM CDT...
AT 706 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR HOULTON...OR 6 MILES
SOUTH OF NEW RICHMOND...MOVING EAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
HAMMOND...DEER PARK...CYLON...BALDWIN...FOREST...WOODVILLE...
EMERALD...HERSEY...GLENWOOD CITY AND WILSON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4503 9272 4520 9240 4521 9218 4487 9215
4487 9275
TIME...MOT...LOC 0010Z 276DEG 17KT 4503 9250
WIND...HAIL 60MPH 1.00IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 6:25 PM CDT | Special Weather Statement | MPX | Barron | 50 min |
| Jul 6, 6:48 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Rusk | 42 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2012Every severe thunderstorm warning in 2012
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.