Alert archive / Wisconsin / Tornado Warnings in 2000

Tornado Warning 7, NWS Twin Cities, MN

July 7, 2000Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Jul 7, 2000, 11:30 AM CDT for Saint Croix County, Wisconsin. It was in force for 45 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 7, 2000, 11:30 AM CDT (16:30 UTC)
Expired
Jul 7, 2000, 12:15 PM CDT
In force
45 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Saint Croix County, WI

What was reported inside it

TimeReportWhereRemark
Jul 7, 11:30 AM CDTThunderstorm Wind 55 ERiver Falls, WISeveral trees down.
Jul 7, 11:30 AM CDTThunderstorm Wind 55 ESomerset, WIRoof partially blown off structure.
Jul 7, 11:50 AM CDTHail 0.75Hudson, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 4.5 hours before the alert went out and 93 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2000-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2000-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 249 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
50 J/kg
Mixed-layer CIN
-428 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
249 m²/s²
0-3 km storm-relative helicity
367 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 071630
TORMSP
WIC109-071715-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1130 AM CDT FRI JUL 7 2000

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN

* UNTIL 1215 PM CDT

* AT 1130 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  POSSIBLE TORNADO 2 MILES SOUTHWEST OF HUDSON...OR ABOUT 9 MILES
  NORTHWEST OF RIVER FALLS...MOVING SOUTHEAST AT 30 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO INCLUDE...
  STAR PRAIRIE
  SOMERSET
  ROBERTS
  HUDSON
  DEER PARK

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR!

MBK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 11:36 AM CDTSevere Thunderstorm WarningMPXPierce54 min
Jul 7, 12:14 PM CDTSevere Thunderstorm WarningMPXPepin46 min
Jul 7, 1:44 PM CDTSevere Thunderstorm WarningMPXPepin16 min

Nearby

Tornado Warnings in Wisconsin, 2000Every tornado warning in 2000Tornadoes in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.