Severe Thunderstorm Warning 109, NWS Lincoln, IL

Issued

Aug 24, 1997, 5:28 PM CDT (22:28 UTC)

Expired

Aug 24, 1997, 6:00 PM CDT

In force

32 min

Issued by

NWS Lincoln, IL

Area

Whole counties

County Champaign County, IL

The Lincoln radar (KILX), 97 km from the middle of the area, began a volume at 22:27 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.

000 
TTAA00 KSPI 242229 RRA
SVRSPI
ILC019-242300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
528 PM CDT SUN AUG 24 1997

* SEVERE THUNDERSTORM WARNING FOR
  CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 600 PM CDT
 
* SOME LOCATIONS AFFECTED
  SAVOY
  TOLONO
  PHILO
  BROADLANDS

* AT 524 PM CDT LAW ENFORCEMENT OFFICIALS REPORTED A SEVERE
  THUNDERSTORM OVER THE CITY OF CHAMPAIGN...MOVING SOUTHEAST AT 35
  MPH.

* THIS STORM PRODUCED 1 INCH DIAMETER HAIL IN CHAMPAIGN.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE FOR LARGE HAIL AND
VERY HEAVY RAIN. MOVE TO A STURDY BUILDING AND STAY AWAY FROM
WINDOWS.

REMEMBER...SEVERE THUNDERSTORMS MAY PRODUCE TORNADOES AT ANY TIME.

GEELHART/BYRD
 

&

NWS Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 24, 2:01 AM CDT, 15 hours 27 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
200 AM CDT SUN AUG 24 1997

CRNT CONVECTION ON THE WAIN AS LEAVING BEST AREA OF THTE ADV AND MOIST
CONVERGENCE.  THIS REFLECTED IN SAT LOOPS AS TOPS WARMING AND COOLERST
TOPS IN ERN IA WHERE STORMS DUMPING HVY RAIN AND POSSIBLE TRAINING.
MDLS SEEM TO VERIFY WELL WITH CRNT SIT AND HANDLE FCST TRENDS IN
SIMILAR FASHION.  GREATEST CHC FOR PCPN WILL BE NORTH OF WARM FRONT
WHERE BEST THTE ADV AND UP LVL DYNAMICS EXIST.  HOWEVER CRNT CONVECTION
WILL PROBABLY PUT DOWN BNDRYS THAT WILL INTERACT WITH A MORE MOIST AND
UNSTABLE AIRMASS FCSTD TO ADVECT INTO NRN IL AND CNTRL IL THIS AFTN
INTO TONIGHT.  PLUS FRONT FROM SRN MN INTO S.D. SHOULD ALSO MAKE ITS
WAY INTO STATE TON ADDING TO THE CHCS OF STORMS.  WILL RECOMMEND CHC
FOR TRWS THIS AFTN AND INTO TON OVR ALL OF CWA.  LIKE DY1 SINCE MDLS
FCST MDT CAPE...HELICITY AND SHEAR OVR AREA THIS AFTN AND TONIGHT
COMBINING WITH DWPTS AROUND 70.  FRONT WILL STALL OVR AREA AS IT
BECOMES PARALLEL TO FLOW BY TOM MORN.  THIS WILL GIVE PLACE FOR MORE
CONVECTION TO FIRE INTO TUE.

FWC CLOSE TO CRNT TEMPS AND SINCE BLV CLOUDS WILL BREAK UP TO ALLOW FOR
SOME HEATING...WILL STICK W/ CRNT FCST HIGHS: FOR TDY.  CRNT FCSTD LOWS
TON LOOK GOOD AS FRONT SHOULD PUSH SOUTH OF MOST OF CWA AND TEMPS
BEHIND FRONT ARE SAME AS AHEAD OF FRONT.

PIA  82/61  34
SPI  83/63  34
DEC  82/62  34
CMI  81/62  34
LWV  84/64  24

AUTEN

Severe Thunderstorm Warnings in Illinois, 1997Every severe thunderstorm warning in 1997

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.