Alert archive / Iowa / Tornado Warnings in 2001

Tornado Warning 26, NWS Quad Cities, IA

June 1, 2001Buchanan County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 1, 2001, 4:35 PM CDT for Buchanan County, Iowa. It was in force for 40 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, 2001, 4:35 PM CDT (21:35 UTC)
Expired: Jun 1, 2001, 5:15 PM CDT
In force: 40 min
Issued by: NWS Quad Cities, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Buchanan County, IA

The radar

The Quad Cities radar (KDVN), 151 km from the middle of the area, began a volume at 21:36 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
Jun 1, 4:55 PM CDT	Tornado F1	Winthrop, IA
Jun 1, 4:58 PM CDT	Tornado F0	Fairbank, IA
Jun 1, 5:01 PM CDT	Tornado F0	Independence, IA
Jun 1, 5:06 PM CDT	Tornado F0	Independence, IA
Jun 1, 5:11 PM CDT	Tornado F0	Lamont, 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, 1:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.6 hours before the alert went out and 155 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -54 m²/s²
0-3 km storm-relative helicity: -77 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 KDVN 012135
TORMLI
IAC019-012215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
435 PM CDT FRI JUN 1 2001

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN BUCHANAN COUNTY IN NORTHEAST IOWA

* UNTIL 515 PM CDT

* AT 431 PM CDT...DOPPLER RADAR AND SPOTTERS INDICATED A TORNADO OVER
  LITTLETON...OR 7 MILES NORTHWEST OF INDEPENDENCE...MOVING EAST AT
  25 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   WAPSIPINICON GOLF COURSE BY 435 PM CDT.
   FONTANA COUNTY PARK/CAMPGROUND BY 440 PM CDT.
   AURORA BY 500 PM CDT.
   LAMONT BY 510 PM CDT.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. SEEK
SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR
ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND
ALWAYS STAY AWAY FROM WINDOWS.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS ALREADY IN EFFECT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY EVENING FOR
NORTHEASTERN IOWA. 

LAT...LON 4263 9209 4245 9209 4242 9162 4263 9162

REA

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 1, 4:14 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan	61 min
Jun 1, 5:11 PM CDT	Tornado Warning	DVN	Delaware	64 min
Jun 1, 5:14 PM CDT	Tornado Warning	DVN	Buchanan	46 min
Jun 1, 5:51 PM CDT	Tornado Warning	DVN	Dubuque, Jones	24 min
Jun 1, 6:13 PM CDT	Tornado Warning	DVN	Dubuque, Jones	47 min
Jun 1, 6:24 PM CDT	Tornado Warning	DVN	Jackson	51 min

Nearby

Tornado Warnings in Iowa, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.