Alert archive / Iowa / Tornado Warnings in 2000

Tornado Warning 17, NWS Des Moines, IA

June 1, 2000Wapello County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 1, 2000, 5:55 PM CDT for Wapello County, Iowa. It was in force for 35 min. 5 reports 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 1, 2000, 5:55 PM CDT (22:55 UTC)
Expired: Jun 1, 2000, 6:30 PM CDT
In force: 35 min
Issued by: NWS Des Moines, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Wapello County, IA

The radar

The Des Moines radar (KDMX), 129 km from the middle of the area, began a volume at 22:57 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 1, 6:00 PM CDT	Thunderstorm Wind 52 E	Kirkville, IA
Jun 1, 6:03 PM CDT	Thunderstorm Wind 65 E	Chillicothe, IA
Jun 1, 6:03 PM CDT	Hail 1.75	Chillicothe, IA
Jun 1, 6:08 PM CDT	Tornado F1	Chillicothe, IA	Moved through open country
Jun 1, 6:36 PM CDT	Hail 1	Ottumwa, 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
Jun 1, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.9 hours before the alert went out and 175 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: 824 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 1154 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 012255
TORDSM
IAC179-012330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
555 PM CDT THU JUN 1 2000

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  WAPELLO COUNTY IN SOUTHEAST IOWA
  THIS INCLUDES THE CITY OF OTTUMWA

* UNTIL 630 PM

* AT 552 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 5 MILES NORTHWEST OF CHILLICOTHE...OR ABOUT 13 MILES
  NORTHWEST OF OTTUMWA...MOVING EAST AT 25 MPH.

* THE TORNADO WILL BE...
  NEAR CHILLICOTHE AROUND 600 PM
  4 MILES NORTH OF OTTUMWA AROUND 620 PM
  NEAR AGENCY AROUND 630 PM

IF YOU ARE CAUGHT OUTSIDE...GO TO A NEARBY REINFORCED BUI;LDING. AS A
LAST RESORT...GET IN A CULVERT OR DITCH AND COVER YOUR HEAD WITH YOUR
HANDS.



LAT...LON 4116 9264 4090 9264 4091 9219 4116 9219

JOHNSON
NNNN

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 9:00 PM CDT	Severe Thunderstorm Warning	DMX	Worth	45 min
May 31, 9:32 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Kossuth	43 min
May 31, 9:45 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Worth	45 min
Jun 1, 5:34 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska	26 min
Jun 1, 5:49 PM CDT	Severe Thunderstorm Warning	DMX	Wapello	41 min
Jun 1, 6:03 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska	27 min
Jun 1, 6:30 PM CDT	Severe Thunderstorm Warning	DMX	Wapello	30 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.