Alert archive / Illinois / Tornado Warnings in 2000

Tornado Warning 11, NWS Quad Cities, IA

May 18, 2000Bureau County, Illinois

NWS Quad Cities, IA issued this tornado warning at May 18, 2000, 3:43 PM CDT for Bureau County, Illinois. It was in force for 47 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: May 18, 2000, 3:43 PM CDT (20:43 UTC)
Expired: May 18, 2000, 4:30 PM CDT
In force: 47 min
Issued by: NWS Quad Cities, IA
Area: Whole counties

County Bureau County, IL

The radar

The Quad Cities radar (KDVN), 91 km from the middle of the area, began a volume at 20:45 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
May 18, 3:50 PM CDT	Tornado F0	Manlius, IL
May 18, 4:00 PM CDT	Tornado F0	Neponset, IL

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
May 18, 11:30 AM CDT	Tornado Watch	SPC	6 hr
May 18, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.7 hours before the alert went out and 84 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: 1779 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 796 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 10.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDVN 182045
TORMLI
ILC011-182130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
343 PM CDT THU MAY 18 2000

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN BUREAU COUNTY IN NORTH CENTRAL ILLINOIS

* UNTIL 430 PM CDT

* AT 340 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO OVER BUDA...OR 12    
  MILES WEST OF PRINCETON...MOVING EAST AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   WYANET BY 350 PM CDT.
   TISKILWA BY 355 PM CDT.
   BUREAU BY 405 PM CDT.
   DEPUE BY 410 PM CDT.

THIS STORM HAS A HISTORY OF CONFIRMED TORNADOES BY LOCAL LAW 
ENFORCEMENT. 

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 HAND
ALWAYS STAY AWAY FROM WINDOWS.


NICHOLS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 10:55 AM CDT	Severe Thunderstorm Warning	DVN	Carroll, Whiteside	50 min
May 18, 10:55 AM CDT	Severe Thunderstorm Warning	DVN	Jo Daviess, Stephenson	50 min
May 18, 12:43 PM CDT	Severe Thunderstorm Warning	DVN	Whiteside	47 min
May 18, 2:29 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Rock Island	46 min
May 18, 3:14 PM CDT	Severe Thunderstorm Warning	DVN	Henry	31 min
May 18, 3:14 PM CDT	Tornado Warning	DVN	Henry	31 min
May 18, 3:21 PM CDT	Tornado Warning	DVN	Bureau	24 min
May 18, 3:28 PM CDT	Severe Thunderstorm Warning	DVN	Whiteside	47 min
May 18, 3:47 PM CDT	Tornado Warning	DVN	Henry	28 min
May 18, 4:41 PM CDT	Tornado Warning	DVN	Putnam	34 min

Nearby

Tornado Warnings in Illinois, 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.