Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 284, NWS Lincoln, IL

August 26, 2000Sangamon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 26, 2000, 9:15 PM CDT for Sangamon County, Illinois. It was in force for 75 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: Aug 26, 2000, 9:15 PM CDT (02:15 UTC)
Expired: Aug 26, 2000, 10:30 PM CDT
In force: 75 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Sangamon County, IL

The radar

The Lincoln radar (KILX), 44 km from the middle of the area, began a volume at 02:17 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
Aug 26, 8:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.3 hours before the alert went out and 99 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: 3339 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 969 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 9.9

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 270216
SVRSPI
ILC167-270330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
915 PM CDT SAT AUG 26 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SANGAMON COUNTY IN CENTRAL ILLINOIS

* UNTIL 1030 PM CDT

* AT 915 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 16 MILES NORTHWEST OF SPRINGFIELD...MOVING
  SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SALISBURY
  SHERMAN
  SPRINGFIELD
  ROCHESTER
  CHATHAM

LARGE HAIL IN EXCESS OF 2 INCHES WILL ACCOMPANY THIS DANGEROUS STORM.
MOVE INDOORS AND STAY AWAY FROM WINDOWS. ABANDON CARS AND MOBILE
HOMES IF YOU ARE IN THE WARNED AREA.

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 STATSEMENTS.

LAT...LON 3997 8968 3990 8972 3990 8993 3963 8971
          3978 8944

KETCHAM
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 Aug 26, 8:43 PM CDT, 32 minutes earlier.

Area forecast discussion, Aug 26, 8:43 PM CDT, 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
843 PM CDT SAT AUG 26 2000

SEVERE WEATHER ACROSS CWA AND HAVE SEVERE THUNDERSTORM WATCH UNTIL
100 AM ACROSS PARTS OF CWA. WILL UPDATE LATER TONIGHT AS SEVERE
WEATHER EXITS REGION. OTHERWISE ACTIVE WEATHER ACROSS PARTS OF CWA
AT THIS TIME.

EH

In the hours before

Local storm report, Aug 26, 7:35 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
735 PM CDT SAT AUG 26 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0720 PM    MARIETTA                  IL   1.75 INCH HAIL
08/26/00   FULTON                         REPORTED BY CO-OP OBSERVER

TNF

Local storm report, Aug 26, 8:27 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
827 PM CDT SAT AUG 26 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0756 PM    1 W LEWISTOWN             IL   .75 INCH HAIL
08/26/00   FULTON

TNF

Local storm report, Aug 26, 9:07 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
907 PM CDT SAT AUG 26 2000

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0820 PM    4 SW HAVANA               IL   WIND DAMAGE
08/26/00   MASON                          LAW ENFORCEMENT REPORTED
                                          TREES WERE REPORTED BLOWN
                                          DOWN IN MATANZAS BEACH.
                                          DAMAGING HAIL REPORTED.
                                          REPORTED BY SHERIFF.

0851 PM    3 NW PETERSBURG           IL   1.25 INCH HAIL
08/26/00   MENARD

TNF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 7:00 PM CDT	Severe Thunderstorm Warning	ILX	Fulton	75 min
Aug 26, 7:59 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt	46 min
Aug 26, 8:03 PM CDT	Severe Thunderstorm Warning	ILX	Mason	57 min
Aug 26, 8:38 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard	52 min
Aug 26, 8:45 PM CDT	Severe Thunderstorm Warning	ILX	Piatt	60 min
Aug 26, 9:25 PM CDT	Severe Thunderstorm Warning	ILX	Douglas, Moultrie	65 min
Aug 26, 9:45 PM CDT	Tornado Warning	ILX	Coles, Douglas, Moultrie	45 min
Aug 26, 10:13 PM CDT	Severe Thunderstorm Warning	ILX	Piatt	32 min
Aug 26, 10:25 PM CDT	Severe Thunderstorm Warning	ILX	Douglas	65 min
Aug 26, 10:26 PM CDT	Tornado Warning	ILX	Coles	49 min
Aug 26, 11:15 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Cumberland	60 min
Aug 26, 11:36 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Jasper	69 min
Aug 27, 12:02 AM CDT	Severe Thunderstorm Warning	ILX	Lawrence	43 min
Aug 27, 12:29 AM CDT	Severe Thunderstorm Warning	ILX	Clay, Richland	61 min
Aug 27, 4:51 AM CDT	Severe Thunderstorm Warning	ILX	Clay	24 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2000 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.