Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 154, NWS Lincoln, IL

June 20, 2000Cass County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 20, 2000, 5:43 PM CDT for Cass County, Illinois. It was in force for 62 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: Jun 20, 2000, 5:43 PM CDT (22:43 UTC)
Expired: Jun 20, 2000, 6:45 PM CDT
In force: 62 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Cass County, IL

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 20, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.7 hours before the alert went out and 138 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: 135 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

075 
WUUS53 KILX 202244
SVRSPI
ILC017-202345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
543 PM CDT TUE JUN 20 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 543 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES SOUTH OF VIRGINIA...MOVING EAST AT 35
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  VIRGINIA
  PHILADELPHIA
  ASHLAND

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 THE NEAREST LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 3998 9035 3987 9030 3989 9001 4009 9000

HEDGES

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 Jun 20, 2:10 PM CDT, 3 hours 33 minutes earlier.

Area forecast discussion, Jun 20, 2:10 PM CDT, 3 hours 33 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
210 PM CDT TUE JUN 20 2000

FORECAST CONCERNS MAINLY FIRST 24 HOURS WITH HEAVY RAIN AND SVR WX
RISKS

18Z SFC ANALYSIS SHOWING CDFNT ACROSS CENTRAL IOWA. VIS SAT AND
RADAR IMAGERY INDICATING A WIDE LINE OF SHOWERS AND THUDNERSTORMS
MOVING THROUGH THE CWA ATTM WELL AHEAD OF THE FRONT AND CU ALONG THE
FRONT.

DIURNAL HEATING HAS ALLOWED FOR A NARROW AXIS OF LIS FROM -4 TO -8
ACROSS CETNRAL AND SE IL WITH DEWPOINTS INTO THE MIDDLE 70S AHEAD OF
THIS LINE. THIS IS ALLOWING FOR RAPID INTENSIFICATION ON THE LEADING
EDGE OF THE LINE. SPC HAS SLGT RISK GENERALLY ALONG AND WEST OF
INTERSTATE 55 AND BEST RISK MAY ACTUALLY BE EAST OF THIS AREA. THE
BEST INSTABILITY AND DYNAMICS WILL REMAIN BOTH BOTH NORTH...CLOSER
TO THE UPR LVL S/W AND SOUTHWEST OF THE CWA...BUT GIVEN THE ABOVE
PARAMETERS WOULD EXPECT THE CURRENT LINE TO CONTINUE TO
INTENSIFY...ESPSCIALLY AHEAD OF THE LINE AS WELL AS ON THE SOUTHERN
END. A MORE SIGNIFICANT CONCERN IS THE RISK OF FLASH FLOODING ACROSS
AREAS IN THE SE STILL DRYING OUT FROM THE PAST WEEKS RAINS. GIVEN
FFG OF 1 TO 1.5 INCHES IN A FEW HOURS...PWS OF 1.5 TO 2 INCHES AND
THE FACT THAT THE MODELS SHOW THE BOUNDARY SLOWING DOWN BY MORNING
ACROSS THIS SAME AREA...WILL ISSUE A FFA FOR ROUGHLY ALONG AND SOUTH
OF INTERSTATE 70 FOR TONIGHT. OVERNIGHT SHIFT MAY NEED TO EXTEND
BASED OF TRENDS. BETWEEN INTERSTATES 55 AND 70...WILL ADD WORDING OF
HEAVY RAINFALL POSSIBLE...BUT WILL LEAVE OUT OF THE WATCH.

AS THE FRONT MOVES INTO EASTERN IOWA AND WESTERN IL...ANOTHER LINE
OF SHOWERS AND THUDNERSTORMS IS EXPECTED TO DEVELOP. RISK OF SVR WX
DOES EXIST WITH CLEARING NOW SHOWING UP AHEAD OF THE FRONT AND
DIURNAL HEATING UNDERWAY.

WITH THE FRONT STILL TO MOVE THROUGH THE SE DURING THE DAY ON
WEDNESDAY...WILL TAPER OFF THE CHCS DURING THE DAY. BEHIND THE
FRONT...LOW LVL MSTR RAPIDLY DECREASES AND ALLOWS FOR LESS
HUMID...BUT WARMER CONDITIONS WITH MORE SUNSHINE...ESPECIALLY INTO
THE AFTERNOON HOURS ACROSS THE WEST AND CENTRAL PARTS OF THE STATE.
THIS TREND WILL MOVE INTO THE SE DURING WEDNESDAY EVENING ALLOWING
FOR DECREASING CLOUDS THERE. WILL NOT MAKE ANY MAJOR CHANGES TO THE
CURRENT ZONES THROUGH THE REMAINDER OF THE PERIOD AS PREV SHIFT HAD
A GOOD HANDLE ON THINGS.

THE EXTENDED FORECAST INTO THIS WEEKEND PAINTS A POTENTIALLY STORMY
PICTURE. MRF SHOWS LOW PRESSURE MOVING OUT OF THE PLAINS AND
WEAKENING AS IT MOVES EAST...BUT NOT BEFORE IT HELPS DRAW MOSITURE
AND WARMER TEMPS BACK INTO THE REGION ON FRIDAY...WHICH SHOULD BE DRY.
THE FRONT APPEARS TO STALL OUT OVER THE WEEKEND ACROSS THE UPPER
OHIO VALLEY. THIS...ALONG WITH THE MOISTURE SHOULD PROVIDE AT LEAST
CHC OF PCPN FOR SATURDAY AND SUNDAY SO WILL WORD AS SUCH. TEMPS WILL
BE IN 80S AND 60S FOR HIGHS/LOWS RESPECTIVELY.

THANKS FOR COORDINATION...PAH..IND...LSX

PRELIMINARY CCF FOR COORDINATION PURPOSES ONLY...

SPI BB 064/080 057/080 058 26520
PIA BB 063/079 056/079 057 26510
DEC BB 064/080 057/080 058 26520
CMI BB 064/079 057/078 057 26+30
MTO TB 067/081 061/080 059 26+40
LWV TB 072/082 064/082 062 26+60

.ILX...FLASH FLOOD WATCH TONIGHT ALONG AND SOUTH OF INTERSTATE 70.

FISHER/FRIEDERS

In the hours before

Local storm report, Jun 20, 3:06 PM CDT, 2 hours 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
306 PM CDT TUE JUN 20 2000

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

Local storm report, Jun 20, 4:53 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
453 PM CDT TUE JUN 20 2000

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

0254 PM    4 S TOWER HILL            IL   TORNADO
06/20/00   SHELBY                         DEPUTY SHERIFF OBSERVED
                                          TORNADO ON GROUND. NO
                                          DAMAGE.

0256 PM    1 S TOWER HILL            IL   TORNADO
06/20/00   SHELBY                         STATE POLICE REPORTED BARN
                                          DAMAGED BY TORNADO IN
                                          LAKEWOOD AREA. EXTENSIVE
                                          DAMAGE TO MOBILE HOME.

0400 PM    MATTOON                   IL   70 MPH TSTM WIND GUST
06/20/00   COLES                          REPORTED BY EOC ON WEST
                                          SIDE OF zTOWN.

AUTEN

Local storm report, Jun 20, 5:20 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
520 PM CDT TUE JUN 20 2000

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

0235 PM    5 S PANA                  IL   TORNADO
06/20/00   CHRISTIAN                      SPOTTER REPORTED TORNADO
                                          TOUCHDOWN...NO DAMAGE.
                                          VIDEO TAKEN OF TORNADO.

0310 PM    2 SE SHELBYVILLE          IL   TORNADO
06/20/00   SHELBY                         POWER POLES AND TREES
                                          DOWN...GARAGE MOVED...2
                                          BARNS DOWN WITH MINOR
                                          DAMAGE TO HOUSE. FROM 2
                                          MILES SOUTH TO 2 MILES EAST
                                          OF SHELBYVILLE. FROM ESDA.

GOETSCH/PLAHMER

Local storm report, Jun 20, 5:38 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
538 PM CDT TUE JUN 20 2000

...THIS IS A SUMMARY OF REPORTS RECEIVED FOR THE AFTERNOON
OF JUNE 20TH EVENT...

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

0235 PM    5 S PANA                  IL   TORNADO
06/20/00   CHRISTIAN                      SPOTTER REPORTED TORNADO
                                          TOUCHDOWN...NO DAMAGE.
                                          VIDEO TAKEN OF TORNADO.

0254 PM    4 S TOWER HILL            IL   TORNADO
06/20/00   SHELBY                         DEPUTY SHERIFF OBSERVED
                                          TORNADO ON GROUND. NO
                                          DAMAGE.

0256 PM    1 S TOWER HILL            IL   TORNADO
06/20/00   SHELBY                         STATE POLICE REPORTED BARN
                                          DAMAGED BY TORNADO IN
                                          LAKEWOOD AREA. EXTENSIVE
                                          DAMAGE TO MOBILE HOME.

0310 PM    2 SE SHELBYVILLE          IL   TORNADO
06/20/00   SHELBY                         POWER POLES AND TREES
                                          DOWN...GARAGE MOVED...2
                                          BARNS DOWN WITH MINOR
                                          DAMAGE TO HOUSE. FROM 2
                                          MILES SOUTH TO 2 MILES EAST
                                          OF SHELBYVILLE. FROM ESDA.

0400 PM    MATTOON                   IL   70 MPH TSTM WIND GUST
06/20/00   COLES                          REPORTED BY EOC ON WEST
                                          SIDE OF TOWN.

GOETSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 1:24 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Shelby	51 min
Jun 20, 1:55 PM CDT	Severe Thunderstorm Warning	ILX	Macon	50 min
Jun 20, 2:05 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	40 min
Jun 20, 2:11 PM CDT	Tornado Warning	ILX	Shelby	49 min
Jun 20, 2:48 PM CDT	Tornado Warning	ILX	Shelby	42 min
Jun 20, 3:27 PM CDT	Tornado Warning	ILX	Effingham	63 min
Jun 20, 3:30 PM CDT	Tornado Warning	ILX	Shelby	45 min
Jun 20, 3:39 PM CDT	Tornado Warning	ILX	Coles	66 min
Jun 20, 3:55 PM CDT	Tornado Warning	ILX	Cumberland	65 min
Jun 20, 4:15 PM CDT	Tornado Warning	ILX	Clark, Edgar	60 min
Jun 20, 4:19 PM CDT	Tornado Warning	ILX	Jasper	56 min
Jun 20, 6:16 PM CDT	Severe Thunderstorm Warning	ILX	Menard	59 min
Jun 20, 6:32 PM CDT	Severe Thunderstorm Warning	ILX	Scott	58 min
Jun 20, 6:40 PM CDT	Tornado Warning	ILX	Logan	65 min
Jun 20, 6:42 PM CDT	Severe Thunderstorm Warning	ILX	Knox	63 min
Jun 20, 6:53 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	67 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.