Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 48, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 18, 2012, 6:03 PM CDT for 5 counties in Wisconsin. It was in force for 42 min. 5 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
- Jul 18, 2012, 6:03 PM CDT (23:03 UTC)
- Expired
- Jul 18, 2012, 6:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Columbia County, WI, Dane County, WI, Green County, WI, Iowa County, WI, Sauk County, WI
The radar
The Milwaukee radar (KMKX), 91 km from the middle of the area, began a volume at 23:05 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 18, 6:12 PM CDT | TSTM WND DMG | Sauk City, WI | SIDE OF ACE HARDWARE STORE BLOWN IN. TREES ALSO REPORTED DOWN. TIME ESTIMATED FROM RADAR. |
| Jul 18, 6:15 PM CDT | TSTM WND DMG | 1 Nne Mount Horeb, WI | TWO AND A HALF FOOT DIAMETER TREE UPROOTED. |
| Jul 18, 6:15 PM CDT | TSTM WND GST 40 | Black Earth, WI | BLCKR |
| Jul 18, 6:30 PM CDT | TSTM WND GST 51 | Lodi, WI | LODIM |
| Jul 18, 6:35 PM CDT | TSTM WND GST 71 | 1 E Mount Horeb, WI | *** 1 INJ *** ONE PERSON WITH MINOR HEAD INJURY DUE TO FALLING TREE. TREES AND POWER LINES DOWN IN MOUNT HOREB...TOWN OF SPRINGFIELD...AND TOWN OF VERMONT. TIME ESTIMATED. |
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 18, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.1 hours before the alert went out and 193 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
- 1900 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1674 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
850
WUUS53 KMKX 182303
SVRMKX
WIC021-025-045-049-111-182345-
/O.NEW.KMKX.SV.W.0048.120718T2303Z-120718T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
603 PM CDT WED JUL 18 2012
THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN...
DANE COUNTY IN SOUTH CENTRAL WISCONSIN...
NORTHERN GREEN COUNTY IN SOUTH CENTRAL WISCONSIN...
EASTERN IOWA COUNTY IN SOUTH CENTRAL WISCONSIN...
SAUK COUNTY IN SOUTH CENTRAL WISCONSIN...
* UNTIL 645 PM CDT
* AT 601 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM WONEWOC TO MAZOMANIE TO
YELLOWSTONE LAKE STATE PARK...AND MOVING EAST AT 55 MPH.
A MEASURED GUST TO 60 MPH WAS RECORDED AT 541 PM CDT AT THE LONE
ROCK AIRPORT IN SOUTHWEST SAUK COUNTY AS THESE STORMS MOVED THROUGH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
CROSS PLAINS...SAUK CITY...REEDSBURG AND PRAIRIE DU SAC AROUND 610
PM CDT.
DEVILS LAKE STATE PARK...WEST BARABOO...WAUNAKEE AND VERONA AROUND
620 PM CDT.
WISCONSIN DELLS AIRPORT...MADISON CAPITOL SQUARE...SHOREWOOD HILLS
AND MAPLE BLUFF AROUND 625 PM CDT.
WISCONSIN DELLS...I90/94 INTERCHANGE AND MADISON TRUAX AIRPORT
AROUND 630 PM CDT.
OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
MARXVILLE...ROCK SPRINGS...PINE BLUFF...MOUNT VERNON...NORTH
FREEDOM...DEVILS LAKE ST PARK...PAOLI...OKEE...HARMONY GROVE AND
HENRY VILAS ZOO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4363 8935 4321 8900 4285 8902 4281 9002
4282 9003 4320 8995 4364 9017
TIME...MOT...LOC 2303Z 277DEG 49KT 4366 9024 4321 8979
4280 8994
WIND...HAIL 70MPH 1.00IN
$$
CRAVEN1 follow-up statement
440
WWUS53 KMKX 182330
SVSMKX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
630 PM CDT WED JUL 18 2012
WIC021-025-045-049-111-182345-
/O.CON.KMKX.SV.W.0048.000000T0000Z-120718T2345Z/
COLUMBIA WI-DANE WI-GREEN WI-IOWA WI-SAUK WI-
630 PM CDT WED JUL 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SAUK...EASTERN
IOWA...NORTHERN GREEN...DANE AND COLUMBIA COUNTIES UNTIL 645 PM
CDT...
AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WISCONSIN DELLS TO MADISON TRUAX
AIRPORT TO MONTICELLO...MOVING EAST AT 45 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
I90/94 INTERCHANGE...I90/94 WI RIVER BRIDGE...SUN PRAIRIE AND
MCFARLAND AROUND 635 PM CDT.
STOUGHTON...POYNETTE AND COTTAGE GROVE AROUND 640 PM CDT.
MARSHALL...DEERFIELD...RIO AND PARDEEVILLE AROUND 645 PM CDT.
OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE TOKEN
CREEK...MORRISONVILLE...INTERSTATE 90/94 INTERCHANGE...ARLINGTON...
DEANSVILLE...EAST BRISTOL...UTICA...WYOCENA AND ALBION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4363 8935 4321 8900 4285 8902 4281 9002
4282 9003 4320 8995 4364 9017
TIME...MOT...LOC 2330Z 273DEG 41KT 4363 8976 4317 8932
4276 8947
WIND...HAIL 70MPH 1.00IN
$$
BROOKSThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 6:41 AM CDT | Areal Flood Advisory | MKX | Dane | 3 hr |
| Jul 18, 5:27 PM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 33 min |
| Jul 18, 5:34 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 32 min |
| Jul 18, 5:36 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 39 min |
| Jul 18, 5:51 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 39 min |
| Jul 18, 6:19 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 26 min |
| Jul 18, 6:21 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 54 min |
| Jul 18, 6:41 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge, Green, Iowa, Jefferson and 3 more | 49 min |
| Jul 18, 6:43 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Sauk | 62 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.