Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 45, NWS Lincoln, IL

April 27, 2002Coles County, Edgar County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 27, 2002, 11:30 PM CDT for Coles County, Edgar County, Illinois. It was in force for 30 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 27, 2002, 11:30 PM CDT (04:30 UTC)
Expired: Apr 28, 2002, 12:00 AM CDT
In force: 30 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Coles County, IL, Edgar County, IL

What was reported inside it

Time	Report	Where	Remark
Apr 27, 11:31 PM CDT	Hail 0.75	Loxa, IL
Apr 27, 11:37 PM CDT	Thunderstorm Wind 50 E	Charleston, IL	The roof of a shed was blown off.
Apr 27, 11:53 PM CDT	Thunderstorm Wind 50 E	Paris, IL	A large tree was blown down across a powerline.

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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 27, 10:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.5 hours before the alert went out and 80 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 439 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 516 m²/s²
0-3 km storm-relative helicity: 567 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

711 
WUUS53 KILX 280430
SVRSPI
ILC029-045-280500-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1128 PM CDT SAT APR 27 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EDGAR COUNTY IN EAST CENTRAL ILLINOIS
  COLES COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL MIDNIGHT CDT

* AT 1128 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CHARLESTON...OR ABOUT 4 MILES NORTHWEST OF
  CHARLESTON...MOVING EAST AT 65 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KANSAS
  OAKLAND
  BROCTON
  REDMON
  PARIS

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.

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES AT ANY TIME.

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 3960 8833 3944 8828 3948 8802 3950 8767
          3980 8767

AUTEN

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 Apr 27, 9:05 PM CDT, 2 hours 25 minutes earlier.

Area forecast discussion, Apr 27, 9:05 PM CDT, 2 hours 25 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
905 PM CDT SAT APR 27 2002

WILL UPDATE ZONES SHORTLY...MAINLY FOR MINOR WORDING CHANGES.
FORECAST STILL ON TRACK FOR SEVERE WEATHER LATE THIS EVENING THROUGH
THE EARLY MORNING HOURS. HEAVY RAINFALL STILL A POSSIBILITY FOR
AREAS NORTH OF I-70...SO FLOOD WATCH TO CONTINUE TONIGHT.

.ILX...FLOOD WATCH TNGT ZNS 027>031..036>038..040>057..061.

BYRD

In the hours before

Local storm report, Apr 27, 11:07 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
1107 PM CDT SAT APR 27 2002

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

1042 AM    EAST PEORIA               IL   .75 INCH HAIL
04/27/02   TAZEWELL                       REPORTED BY STORM
                                          SPOTTERS.

1033 PM    EDWARDS                   IL   .88 INCH HAIL
04/27/02   PEORIA                         REPORTED BY STORM
                                          SPOTTERS.

1024 PM    5 W HANNA CITY            IL   .75 INCH HAIL
04/27/02   PEORIA                         REPORTED BY STORM
                                          SPOTTERS.

1007 PM    MIDDLE GROVE              IL   .75 INCH HAIL
04/27/02   FULTON                         REPORTED BY FARMINGTON
                                          ESDA.

GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 10:19 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Peoria	41 min
Apr 27, 10:20 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Shelby	55 min
Apr 27, 10:42 PM CDT	Severe Thunderstorm Warning	ILX	Mason, Tazewell, Woodford	48 min
Apr 27, 10:43 PM CDT	Severe Thunderstorm Warning	ILX	Moultrie, Piatt	47 min
Apr 27, 11:52 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Richland	38 min
Apr 27, 11:58 PM CDT	Flash Flood Warning	ILX	Coles, Edgar	4 hr
Apr 27, 11:58 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	32 min
Apr 28, 12:31 AM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	44 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2002 Every severe thunderstorm warning in 2002

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.