Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 18, NWS La Crosse, WI

May 12, 2000Adams County, Wisconsin

NWS La Crosse, WI issued this severe thunderstorm warning at May 12, 2000, 9:58 AM CDT for Adams County, Wisconsin. It was in force for 32 min. 2 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: May 12, 2000, 9:58 AM CDT (14:58 UTC)
Expired: May 12, 2000, 10:30 AM CDT
In force: 32 min
Issued by: NWS La Crosse, WI
Area: Whole counties

County Adams County, WI

The radar

The La Crosse radar (KARX), 115 km from the middle of the area, began a volume at 14:59 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
May 12, 10:11 AM CDT	Hail 1	Friendship, WI
May 12, 10:16 AM CDT	Hail 1	Big Flats, 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 3.0 hours before the alert went out and 145 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: 15 J/kg
Mixed-layer CIN: -508 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KARX 121459
SVRLSE
WIC001-121530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
958 AM CDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ADAMS COUNTY IN CENTRAL WISCONSIN

* UNTIL 1030 AM CDT

* AT 958 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING LARGE HAIL 6 MILES WEST OF
  DELLWOOD...OR ABOUT 10 MILES NORTH OF MAUSTON. THIS ACTIVITY WAS
  MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR STRONGS PRAIRIE AT 1000 AM CDT
  NEAR ARKDALE AT 1005 AM CDT
  NEAR ADAMS AND FRIENDSHIP AT 1010 AM CDT

LARGE DESTRUCTIVE HAIL IS THE MAIN THREAT WITH THESE STORMS. FOR YOUR
PROTECTION...SEEK SHELTER IN A STURDY BUILDING AND STAY AWAY FROM
WINDOWS.

CONSIDINE

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 8:46 PM CDT	Severe Thunderstorm Warning	ARX	Crawford	59 min
May 11, 9:04 PM CDT	Tornado Warning	ARX	Crawford	41 min
May 12, 6:43 AM CDT	Severe Thunderstorm Warning	ARX	Crawford, Vernon	62 min
May 12, 7:17 AM CDT	Severe Thunderstorm Warning	ARX	Richland	43 min
May 12, 9:51 AM CDT	Severe Thunderstorm Warning	ARX	Juneau	24 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2000 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.