Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 39, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 23, 2007, 4:31 PM CDT for Pierce County, Wisconsin. It was in force for 59 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
- May 23, 2007, 4:31 PM CDT (21:31 UTC)
- Expired
- May 23, 2007, 5:30 PM CDT
- In force
- 59 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Pierce County, WI
The radar
The Minneapolis radar (KMPX), 82 km from the middle of the area, began a volume at 21:31 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 23, 2:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.5 hours before the alert went out and 85 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
- 84 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 232132 SVRMPX WIC093-232230- /O.NEW.KMPX.SV.W.0039.070523T2131Z-070523T2230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 431 PM CDT WED MAY 23 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PIERCE COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 530 PM CDT * AT 427 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL.DAMAGING WINDS IN EXCESS OF 65 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM RIVER FALLS TO 11 MILES SOUTHWEST OF RIVER FALLS...AND MOVING EAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... RIVER FALLS... ELLSWORTH... SPRING VALLEY... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED. STAY INDOORS...AND AWAY FROM WINDOWS. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 4486 9273 4472 9275 4456 9227 4485 9215 $$ MB
2 follow-up statements
000 WWUS53 KMPX 232155 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 454 PM CDT WED MAY 23 2007 WIC093-232230- /O.CON.KMPX.SV.W.0039.000000T0000Z-070523T2230Z/ PIERCE WI- 454 PM CDT WED MAY 23 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR PIERCE COUNTY... AT 452 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS IN EXCESS OF 65 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 4 MILES NORTHWEST OF MARTEL TO 3 MILES SOUTH OF ELLSWORTH...AND MOVING EAST AT 40 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE MARTEL...ESDAILE... BELDENVILLE...SPRING VALLEY...RIVER FALLS AND ELLSWORTH. DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. A TORNADO MAY DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 4486 9273 4472 9275 4456 9227 4485 9215 $$ MB
000 WWUS53 KMPX 232229 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 529 PM CDT WED MAY 23 2007 WIC093-232239- /O.EXP.KMPX.SV.W.0039.000000T0000Z-070523T2230Z/ PIERCE WI- 529 PM CDT WED MAY 23 2007 ...THE SEVERE THUNDERSTORM WARNING FOR PIERCE COUNTY EXPIRES AT 530 PM CDT... SEVERE STORMS HAVE WEAKENED. HOWEVER...MORE THUNDERSTORMS WERE DEVELOPING IN THE AREA...REMAIN ALERT FOR POSSIBLE ADDITIONAL WARNINGS. LAT...LON 4486 9273 4472 9275 4456 9227 4485 9215 $$ MB
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 3:22 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 53 min |
| May 23, 4:07 PM CDT | Tornado Warning | MPX | Polk | 38 min |
| May 23, 4:24 PM CDT | Severe Thunderstorm Warning | MPX | Barron | 66 min |
| May 23, 4:29 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 61 min |
| May 23, 4:48 PM CDT | Tornado Warning | MPX | Polk | 27 min |
| May 23, 5:12 PM CDT | Severe Thunderstorm Warning | MPX | Dunn | 63 min |
| May 23, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Barron | 48 min |
| May 23, 6:04 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Rusk | 56 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2007Every severe thunderstorm warning in 2007
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.