Alert archive / Iowa / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 79, NWS La Crosse, WI

June 13, 2000Winneshiek County, Iowa

NWS La Crosse, WI issued this severe thunderstorm warning at Jun 13, 2000, 3:28 PM CDT for Winneshiek County, Iowa. It was in force for 62 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jun 13, 2000, 3:28 PM CDT (20:28 UTC)
Expired: Jun 13, 2000, 4:30 PM CDT
In force: 62 min
Issued by: NWS La Crosse, WI
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Winneshiek County, IA

The radar

The La Crosse radar (KARX), 81 km from the middle of the area, began a volume at 20:31 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.

What was reported inside it

Time	Report	Where	Remark
Jun 13, 3:45 PM CDT	Thunderstorm Wind 61 E	Decorah, IA

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

Davenport, (KDVN), launched 12:00Z, 8.5 hours before the alert went out and 215 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: 671 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 356 m²/s²
0-3 km storm-relative helicity: 366 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KARX 132029
SVRLSE
IAC191-132130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
328 PM CDT TUE JUN 13 2000

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WINNESHIEK COUNTY IN NORTHEAST IOWA

* UNTIL 430 PM CDT

* AT 328 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS ALONG A LINE
  EXTENDING FROM 4 MILES EAST OF CRESCO TO 13 MILES NORTHWEST OF WEST
  UNION TO 8 MILES NORTHWEST OF WEST UNION. THIS ACTIVITY WAS MOVING
  NORTHEAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE...
  NEAR CONOVER AND FESTINA AT 330 PM CDT
  NEAR CALMAR AT 335 PM CDT
  NEAR OSSIAN AND BLUFFTON AT 340 PM CDT
  NEAR DECORAH AND BURR OAK AT 345 PM CDT
  NEAR LOCUST AT 355 PM CDT

WIND GUSTS FROM THESE STORMS CAN PRODUCE TORNADO-LIKE DAMAGE. SEEK
SHELTER IN A BASEMENT OR IN AN INT2ERIOR ROOM ON THE LOWEST FLOOR AND
STAY AWAY FROM WINDOWS.

KRC

LAT...LON 4339 9209 4310 9203 4310 9181 4314 9165
          4330 9163 4351 9165

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 2:48 PM CDT	Severe Thunderstorm Warning	ARX	Fayette	57 min
Jun 13, 3:34 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Clayton	71 min

Nearby

Severe Thunderstorm Warnings in Iowa, 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.