Alert archive / Illinois / Tornado Warnings in 1998

Tornado Warning 46, NWS Quad Cities, IA

June 28, 1998McDonough County, Illinois

NWS Quad Cities, IA issued this tornado warning at Jun 28, 1998, 6:37 PM CDT for McDonough County, Illinois. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 28, 1998, 6:37 PM CDT (23:37 UTC)
Expired: Jun 28, 1998, 7:40 PM CDT
In force: 63 min
Issued by: NWS Quad Cities, IA
Area: Whole counties

County McDonough County, IL

The radar

The Lincoln radar (KILX), 119 km from the middle of the area, began a volume at 23:38 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.

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 28, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.6 hours before the alert went out and 130 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: 516 J/kg
Mixed-layer CIN: -304 J/kg
Mixed-layer LCL: 947 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.5

Open this sounding in Storm Lab

The text

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

998 
WFUS1 KMLI 282340 RRA
TORMLI
ILC109-290040-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
637 PM CDT SUN JUN 28 1998

THE NATIONAL WEATHER SERVICE IN QUAD CITIES IA HAS ISSUED A

* TORNADO WARNING FOR...
  MCDONOUGH COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 740 PM CDT

* AT 635 PM CDT... DOPPLER RADAR INDICATED A DEVELOPING TORNADO 14
  MILES WEST OF MACOMB OR 6 MILES SOUTHWEST OF BLANDINSVILLE MOVING
  NORTHEAST AT 25 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  COLCHESTER                                 AROUND 650 PM CDT
  BLANDINSVILLE                              AROUND 655 PM CDT
  ARGYLE LAKE STATE PARK                     AROUND 700 PM CDT
  SCIOTA                                     AROUND 715 PM CDT
  MACOMB                                     AROUND 715 PM CDT

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

JDH/TPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 1:40 AM CDT	Severe Thunderstorm Warning	DVN	Jo Daviess	50 min
Jun 28, 1:56 AM CDT	Severe Thunderstorm Warning	DVN	Carroll, Whiteside	49 min
Jun 28, 2:02 AM CDT	Severe Thunderstorm Warning	DVN	Rock Island	48 min
Jun 28, 2:13 AM CDT	Severe Thunderstorm Warning	DVN	Stephenson	47 min
Jun 28, 2:30 AM CDT	Severe Thunderstorm Warning	DVN	Henry	50 min
Jun 28, 2:40 AM CDT	Severe Thunderstorm Warning	DVN	Bureau	50 min
Jun 28, 2:43 AM CDT	Severe Thunderstorm Warning	DVN	Whiteside	37 min
Jun 28, 2:49 AM CDT	Severe Thunderstorm Warning	DVN	Henry	36 min
Jun 28, 3:10 AM CDT	Severe Thunderstorm Warning	DVN	Putnam	35 min
Jun 28, 5:20 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	65 min
Jun 28, 6:17 PM CDT	Tornado Warning	DVN	Hancock	48 min

Nearby

Tornado Warnings in Illinois, 1998 Every tornado warning in 1998 Tornadoes in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.