Alert archive / Illinois / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 106, NWS Lincoln, IL

July 8, 2001Knox County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 8, 2001, 1:18 PM CDT for Knox County, Illinois. It was in force for 57 min. No storm report in the archive falls 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.

The facts

Issued: Jul 8, 2001, 1:18 PM CDT (18:18 UTC)
Expired: Jul 8, 2001, 2:15 PM CDT
In force: 57 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Knox County, IL

The radar

The Quad Cities radar (KDVN), 73 km from the middle of the area, began a volume at 18:22 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
Jul 8, 11:15 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 6.3 hours before the alert went out and 72 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: 2493 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 081820
SVRSPI

ILC095-081915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
118 PM CDT SUN JUL 8 2001

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KNOX COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 215 PM CDT

* AT 118 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM ENTERING NORTHWEST KNOX COUNTY NEAR RIO...OR
  ABOUT 9 MILES NORTH OF GALESBURG...MOVING SOUTHEAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WATAGA
  ONEIDA
  KNOXVILLE
  GALESBURG
  ALTONA
  GILSON
  VICTORIA
  MAQUON
  WILLIAMSFIELD

THIS STORM IS CAPABLE OF PRODUCING WINDS IN EXCESS OF 60 MPH...
DAMAGING HAIL...FREQUENT LIGHTNING...AND VERY HEAVY RAIN. TAKE
SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STAY TUNED FOR LATER STATEMENTS.

LAT...LON 4114 9043 4082 9045 4077 9001 4114 8999

FRIEDERS

NNNN

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 10:25 AM CDT, 2 hours 53 minutes earlier.

Area forecast discussion, Jul 8, 10:25 AM CDT, 2 hours 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
1025 AM CDT SUN JUL 8 2001

WILL UPDATE FOR TEMP TRENDS IN FAR SE...OTHERWISE HAVE ALREADY
UPDATED FCST TO REFLECT RADAR TRENDS THIS MORNING AND WILL CONTINUE
TO MONITOR FOR FUTURE UPDATES.

SFC ANALYSIS SHOWS BOUNDARY HAS SLIPPED SOUTH TO POSITION NEAR
DVN-DNV. CONVECTION CONTINUES TO DEVELOP ALONG BOUNDARY IN A NARROW
BAND. MOSTLY JUST HEAVY RAINERS AT THIS POINT. WILL BE WATCHING
CONVECTION ACROSS IA FOR TRENDS SE ALONG BOUNDARY TOWARD CENT IL.
CAP WEAKER TODAY AND SFC BOUNDARY CLOSE BY AND STRONG
INSTABILITY...SO POTENTIAL FOR STORMS IS MUCH BETTER ACROSS AREA
TODAY.

TEMPS CONT TO RESPOND IN WARM SECTOR WITH LWR/MID 80S ALREADY. 91
ALREADY AT 10 AM AT LWV...AND SO WILL RAISE THE MID 90S.

.ILX...HEAT ADVISORY TODAY ENTIRE CWA.

FRIEDERS

In the hours before

Special weather statement, Jul 8, 11:15 AM CDT, 2 hours 3 minutes before

ILZ027>031-036>038-040>057-061>063-066>068-071>073-081800-

HAZARDOUS WEATHER OUTLOOK FOR CENTRAL ILLINOIS
NATIONAL WEATHER SERVICE LINCOLN IL
1115 AM CDT SUN JUL 8 2001

THERE IS A RISK FOR SEVERE THUNDERSTORMS ACROSS CENTRAL ILLINOIS
THIS AFTERNOON INTO TONIGHT. A SEVERE THUNDERSTORM WATCH HAS
ALREADY BEEN POSTED FOR ALL OF CENTRAL ILLINOIS UNTIL 6 PM.

A HOT AND HUMID AIRMASS WILL INTERACT WITH A FRONT MOVING INTO
CENTRAL ILLINOIS...TO PRODUCE SCATTERED THUNDERSTORMS FOR THIS
AFTERNOON AND INTO TONIGHT. THE MAIN THREAT WILL BE DAMAGING WINDS.
AN ISOLATED TORNADO OR LARGE HAIL CANNOT BE RULED OUT.

FRIEDERS

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 8, 1:44 PM CDT	Severe Thunderstorm Warning	ILX	Stark	61 min
Jul 8, 2:01 PM CDT	Severe Thunderstorm Warning	ILX	Marshall	59 min
Jul 8, 2:32 PM CDT	Severe Thunderstorm Warning	ILX	Woodford	58 min
Jul 8, 2:49 PM CDT	Severe Thunderstorm Warning	ILX	McLean	56 min
Jul 8, 3:38 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	67 min
Jul 8, 4:15 PM CDT	Severe Thunderstorm Warning	ILX	Douglas, Moultrie	60 min
Jul 8, 4:26 PM CDT	Severe Thunderstorm Warning	ILX	Coles	64 min
Jul 8, 4:32 PM CDT	Tornado Warning	ILX	Moultrie	43 min
Jul 8, 4:51 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	54 min
Jul 8, 4:57 PM CDT	Tornado Warning	ILX	Coles	63 min
Jul 8, 5:04 PM CDT	Severe Thunderstorm Warning	ILX	Shelby	71 min
Jul 8, 5:09 PM CDT	Tornado Warning	ILX	Shelby	66 min
Jul 8, 5:15 PM CDT	Severe Thunderstorm Warning	ILX	Clark	60 min
Jul 8, 5:20 PM CDT	Tornado Warning	ILX	Cumberland	55 min
Jul 8, 5:45 PM CDT	Severe Thunderstorm Warning	ILX	Jasper	75 min
Jul 8, 6:07 PM CDT	Severe Thunderstorm Warning	ILX	Crawford	68 min
Jul 8, 6:13 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Cumberland	32 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2001 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.