Alert archive / Iowa / Tornado Warnings in 2001

Tornado Warning 27, NWS Quad Cities, IA

June 1, 2001Delaware County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 1, 2001, 5:11 PM CDT for Delaware County, Iowa. It was in force for 64 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: Jun 1, 2001, 5:11 PM CDT (22:11 UTC)
Expired: Jun 1, 2001, 6:15 PM CDT
In force: 64 min
Issued by: NWS Quad Cities, IA
Area: Whole counties

County Delaware County, IA

The radar

The Quad Cities radar (KDVN), 116 km from the middle of the area, began a volume at 22:12 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, 5:12 PM CDT	Tornado F0	Manchester, IA	Reported by trained spotter.
Jun 1, 5:45 PM CDT	Thunderstorm Wind 61 E	Robinson, IA	Property damage near town, with several trees toppled. Reported by emergency management.

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, 10.2 hours before the alert went out and 119 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 012212
TORMLI
IAC055-061-012315-

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

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  DELAWARE COUNTY IN NORTHEAST IOWA
  EXTREME NORTHWESTERN DUBUQUE COUNTY IN NORTHEAST IOWA

* UNTIL 615 PM CDT

* AT 507 PM CDT...DOPPLER RADAR AND SPOTTERS INDICATED TORNADOS NEAR 
MASONVILLE...ALSO 2 MILES NORTHWEST OF MANCHESTER MOVING EAST 
AT 25 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   MANCHESTER NOW.
   DELAWARE BY 520 PM CDT.
   ONEIDA BY 525 PM CDT.
   GREELEY BY 530 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT FRIDAY EVENING FOR
NORTHEASTERN IOWA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900
PM CDT FRIDAY EVENING FOR SOUTHEAST IOWA AND WEST CENTRAL ILLINOIS
AND NORTHEAST MISSOURI.

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, 4:35 PM CDT	Tornado Warning	DVN	Buchanan	40 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.