Alert archive / Illinois / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 91, NWS Lincoln, IL

May 12, 2000Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 12, 2000, 7:40 PM CDT for Piatt County, Illinois. It was in force for 65 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: May 12, 2000, 7:40 PM CDT (00:40 UTC)
Expired: May 12, 2000, 8:45 PM CDT
In force: 65 min
Issued by: NWS Lincoln, IL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Piatt County, IL

What was reported inside it

Time	Report	Where	Remark
May 12, 7:55 PM CDT	Hail 1.75	Monticello, 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 12, 2:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 17 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: 162 J/kg
Mixed-layer CIN: -342 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.5

Open this sounding in Storm Lab

The text

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

278 
WUUS53 KILX 130041
SVRSPI
ILC147-130145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
740 PM CDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PIATT COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 845 PM CDT

* AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES SOUTHWEST OF CERRO GORDO...OR ABOUT 9
  MILES EAST OF DECATUR...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CERRO GORDO
  BEMENT
  MONTICELLO
  DE LAND
  WHITE HEATH
  MANSFIELD

THIS STORM IS CAPABLE OF PRODUCING WINDS IN EXCESS OF 60 MPH...
LARGE 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 4005 8876 3979 8875 3981 8847 4029 8847

AUTEN

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:11 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland	49 min
May 12, 7:18 PM CDT	Tornado Warning	ILX	Clay, Effingham	57 min
May 12, 7:30 PM CDT	Severe Thunderstorm Warning	ILX	Macon	45 min
May 12, 7:37 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Edgar	68 min
May 12, 7:46 PM CDT	Severe Thunderstorm Warning	ILX	Coles	29 min
May 12, 7:56 PM CDT	Tornado Warning	ILX	Jasper	49 min
May 12, 8:01 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	59 min
May 12, 8:06 PM CDT	Tornado Warning	ILX	Clay	54 min
May 12, 8:37 PM CDT	Tornado Warning	ILX	Crawford, Jasper	53 min
May 12, 8:41 PM CDT	Severe Thunderstorm Warning	ILX	Clark	34 min
May 12, 8:55 PM CDT	Tornado Warning	ILX	Clay, Richland	50 min
May 12, 9:27 PM CDT	Severe Thunderstorm Warning	ILX	Crawford	48 min
May 12, 9:43 PM CDT	Severe Thunderstorm Warning	ILX	Richland	47 min
May 12, 9:57 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	63 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.