Alert archive / Iowa / Tornado Warnings in 2000

Tornado Warning 10, NWS La Crosse, WI

August 1, 2000Winneshiek County, Iowa

NWS La Crosse, WI issued this tornado warning at Aug 1, 2000, 5:26 PM CDT for Winneshiek County, Iowa. It was in force for 64 min. 7 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: Aug 1, 2000, 5:26 PM CDT (22:26 UTC)
Expired: Aug 1, 2000, 6:30 PM CDT
In force: 64 min
Issued by: NWS La Crosse, WI
Area: Whole counties

County Winneshiek County, IA

The radar

The La Crosse radar (KARX), 79 km from the middle of the area, began a volume at 22:27 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
Aug 1, 5:30 PM CDT	Hail 1.5	Kendallville, IA
Aug 1, 5:32 PM CDT	Thunderstorm Wind 55 E	Hesper, IA
Aug 1, 5:48 PM CDT	Hail 0.75	Ridgeway, IA
Aug 1, 5:50 PM CDT	Thunderstorm Wind 55 E	Decorah, IA
Aug 1, 5:50 PM CDT	Hail 0.75	Decorah, IA
Aug 1, 5:50 PM CDT	Thunderstorm Wind 55 E	Bluffton, IA
Aug 1, 6:12 PM CDT	Thunderstorm Wind 55 E	Frankville, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 1, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.4 hours before the alert went out and 216 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: 607 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1260 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 133 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 
WFUS53 KARX 012226
TORLSE

IAC191-012330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
526 PM CDT TUE AUG 1 2000

THE NATIONAL WEATHER SERVICE IN IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  WINNESHIEK COUNTY IN NORTHEAST IOWA

* UNTIL 630 PM CDT

* AT 526 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 10 MILES NORTH OF RIDGEWAY...OR ABOUT 7 MILES
  NORTHEAST OF CRESCO...MOVING SOUTHEAST AT 20 MPH.

* THE DEVELOPING TORNADO IS EXPECTED TO BE...
  NEAR RIDGEWAY AT 540 PM CDT
  NEAR DECORAH AT 550 PM CDT

TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR!

RIECK

LAT...LON 4352T 9194 4349 9211 4323 9199 4333 9173

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 4:41 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	64 min
Aug 1, 5:20 PM CDT	Severe Thunderstorm Warning	ARX	Winneshiek	55 min
Aug 1, 5:45 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	60 min
Aug 1, 6:19 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	56 min
Aug 1, 6:42 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee	33 min

Nearby

Tornado Warnings in Iowa, 2000 Every tornado warning in 2000 Tornadoes 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.