Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 221, NWS Twin Cities, MN

July 19, 2008Dunn County, Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 19, 2008, 5:05 PM CDT for Dunn County, Pierce County, Saint Croix County, Wisconsin. It was in force for 55 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 19, 2008, 5:05 PM CDT (22:05 UTC)
Expired: Jul 19, 2008, 6:00 PM CDT
In force: 55 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Dunn County, WI, Pierce County, WI, Saint Croix County, WI

The radar

The La Crosse radar (KARX), 128 km from the middle of the area, began a volume at 22:05 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 19, 5:46 PM CDT	HAIL 0.75	9 W Rock Falls, WI

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 19, 2:28 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.1 hours before the alert went out and 133 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1477 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMPX 192204
SVRMPX
WIC033-093-109-192300-
/O.NEW.KMPX.SV.W.0221.080719T2205Z-080719T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
505 PM CDT SAT JUL 19 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
  SOUTHERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHEASTERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 600 PM CDT

* AT 502 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. 
  THIS STORM WAS LOCATED 5 MILES NORTH OF ELMWOOD...OR ABOUT 11 MILES
  WEST OF MENOMONIE...AND MOVING EAST AT 32 MPH.

* SOME LOCATIONS INCLUDE...
  MENOMONIE...
  ELK MOUND...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4494 9166 4470 9168 4472 9228 4496 9226
TIME...MOT...LOC 2205Z 281DEG 28KT 4485 9209

$$

LS

2 follow-up statements

000 
WWUS53 KMPX 192222
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
522 PM CDT SAT JUL 19 2008

WIC109-192232-
/O.CAN.KMPX.SV.W.0221.000000T0000Z-080719T2300Z/
ST. CROIX WI-
522 PM CDT SAT JUL 19 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ST. CROIX COUNTY
IS CANCELLED...

RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF SOUTHEASTERN
ST. CROIX COUNTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS 
BEEN CANCELLED FOR THAT AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4471 9223 4473 9229 4476 9227 4485 9227
      4486 9215 4495 9213 4495 9172 4493 9166
      4470 9168
TIME...MOT...LOC 2222Z 284DEG 32KT 4478 9189

$$

WIC033-093-192300-
/O.CON.KMPX.SV.W.0221.000000T0000Z-080719T2300Z/
DUNN WI-PIERCE WI-
522 PM CDT SAT JUL 19 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN PIERCE AND SOUTHERN DUNN COUNTIES...

AT 520 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED 7 MILES SOUTH OF MENOMONIE...OR
ABOUT 8 MILES NORTHEAST OF EAU GALLE...AND MOVING EAST AT 36 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE ROCK FALLS...CARYVILLE...
SPRING VALLEY...MENOMONIE...ELMWOOD AND ELK MOUND.

PREPARE IMMEDIATELY FOR DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4471 9223 4473 9229 4476 9227 4485 9227
      4486 9215 4495 9213 4495 9172 4493 9166
      4470 9168
TIME...MOT...LOC 2222Z 284DEG 32KT 4478 9189

$$

LS

000 
WWUS53 KMPX 192246
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
546 PM CDT SAT JUL 19 2008

WIC033-093-192300-
/O.CON.KMPX.SV.W.0221.000000T0000Z-080719T2300Z/
DUNN WI-PIERCE WI-
546 PM CDT SAT JUL 19 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR NORTHEASTERN PIERCE AND SOUTHERN DUNN COUNTIES...

AT 543 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
60 MPH.  THE SEVERE STORM WAS LOCATED 5 MILES NORTHWEST OF ROCK
FALLS...OR ABOUT 9 MILES SOUTHWEST OF ELK MOUND...AND MOVING EAST AT
37 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE ROCK FALLS...CARYVILLE...
SPRING VALLEY...MENOMONIE...ELMWOOD AND ELK MOUND.

PREPARE IMMEDIATELY FOR DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4471 9223 4473 9229 4476 9227 4485 9227
      4486 9215 4495 9213 4495 9172 4493 9166
      4470 9168
TIME...MOT...LOC 2246Z 284DEG 32KT 4475 9174

$$

LS

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 4:25 PM CDT	Tornado Warning	MPX	Saint Croix	35 min
Jul 19, 4:37 PM CDT	Severe Thunderstorm Warning	MPX	Dunn	42 min
Jul 19, 5:06 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	54 min
Jul 19, 5:28 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	47 min
Jul 19, 5:57 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin	23 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2008 Every severe thunderstorm warning in 2008

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.