Alert archive / Illinois / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 165, NWS Lincoln, IL

June 21, 2008Douglas County, Edgar County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 21, 2008, 1:59 PM CDT for Douglas County, Edgar County, Illinois. It was in force for 46 min. 1 report 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: Jun 21, 2008, 1:59 PM CDT (18:59 UTC)
Expired: Jun 21, 2008, 2:45 PM CDT
In force: 46 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

Counties Douglas County, IL, Edgar County, IL

The radar

The Lincoln radar (KILX), 132 km from the middle of the area, began a volume at 18:58 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.

What was reported inside it

Time	Report	Where	Remark
Jun 21, 2:20 PM CDT	HAIL 0.88	3 W Newman, IL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.0 hours before the alert went out and 77 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: 996 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1325 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 211859
SVRILX
ILC041-045-211945-
/O.NEW.KILX.SV.W.0165.080621T1859Z-080621T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
159 PM CDT SAT JUN 21 2008

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 245 PM CDT.

* AT 159 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED 4 MILES SOUTHEAST OF CAMARGO...OR ABOUT 9 MILES
  EAST OF TUSCOLA...AND WAS MOVING EAST AT 24 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEWMAN...
  BROCTON...
  HUME...
  CHRISMAN...

ANOTHER LOCATION IN THIS WARNING IS...HINDSBORO.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING...BUT STAY
AWAY FROM WINDOWS.

REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL EMERGENCY
MANAGER...OR THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 3963 8758 3966 8797 3969 8798 3969 8804
      3966 8806 3967 8820 3985 8818 3984 8755
TIME...MOT...LOC 1859Z 275DEG 21KT 3975 8806

$$

AUTEN

2 follow-up statements

000 
WWUS53 KILX 211923
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
222 PM CDT SAT JUN 21 2008

ILC041-045-211945-
/O.CON.KILX.SV.W.0165.000000T0000Z-080621T1945Z/
DOUGLAS-EDGAR-
222 PM CDT SAT JUN 21 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM CDT
FOR CENTRAL EDGAR AND EASTERN DOUGLAS COUNTIES...

AT 216 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR NEWMAN...OR ABOUT 17 MILES EAST OF TUSCOLA...MOVING EAST
AT 24 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  HUME...
  METCALF...
  EDGAR...
  CHRISMAN...
  EDGAR COUNTY AIRPORT...
  SCOTTLAND...

THIS STORM HAS PRODUCED QUARTER SIZED HAIL JUST WEST OF NEWMAN. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 3963 8758 3966 8797 3969 8798 3969 8808
      3985 8807 3984 8755
TIME...MOT...LOC 1922Z 275DEG 21KT 3979 8792

$$

HARDIMAN

000 
WWUS53 KILX 211945
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
245 PM CDT SAT JUN 21 2008

ILC041-045-211955-
/O.EXP.KILX.SV.W.0165.000000T0000Z-080621T1945Z/
DOUGLAS-EDGAR-
245 PM CDT SAT JUN 21 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL EDGAR AND EASTERN
DOUGLAS COUNTIES EXPIRES AT 245 PM CDT...

AT 242 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD WEAKENED...THUS
THE WARNING HAS BEEN ALLOWED TO EXPIRE.

ADDITIONAL THUNDERSTORM DEVELOPMENT IS POSSIBLE THROUGH THE 
AFTERNOON HOURS.

LAT...LON 3963 8758 3966 8797 3969 8798 3969 8808
      3985 8807 3984 8755
TIME...MOT...LOC 1923Z 275DEG 21KT 3979 8791

$$

HARDIMAN

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 21, 12:37 PM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jun 21, 12:37 PM CDT, 1 hour 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
1237 PM CDT SAT JUN 21 2008

.DISCUSSION...
ISSUED 1050 AM CDT SAT JUN 21 2008

SHARPLY DEFINED SHORTWAVE IS MOVING ACROSS CENTRAL ILLINOIS AT
THIS TIME...CLEARLY DEFINED IN WATER VAPOR IMAGERY. WEAK LINE OF
CONVECTION EVIDENT ON RADAR AND VIS SATELLITE IMAGERY...WHICH
CALLS INTO QUESTION THE PRECIP CHANCES WEST OF I-55 FOR LATER THIS
AFTERNOON. WATER VAPOR IMAGERY DOES NOT SHOW MUCH IN THE WAY OF
UPSTREAM DISTURBANCES...BUT SOME CONVECTION HAS CROPPED UP OVER
EASTERN SOUTH DAKOTA... IN RESPONSE TO AN APPARENT MID-LEVEL SPEED
MAX.

KEEPING ALL THIS IN MIND...SHIFTED HIGHEST POPS TO THE EASTERN
1/3RD OF THE CWA...WHERE DIURNAL HEATING AND PASSAGE OF SHORTWAVE
TROUGH WILL BE BETTER TIMED. KEPT SLIGHT CHANCES ACROSS THE WEST.

18Z RAOB WILL BE RELEASED. 12Z SOUNDING INDICATED UNCAPPED
ATMOSPHERE WITH VERY STEEP LAPSE RATES...AND THE FEW CELLS THAT
HAVE POPPED UP HAVE PRODUCED ANYWHERE FROM PEA TO DIME SIZED HAIL
ALREADY.

HARDIMAN

&&

.AVIATION...
ISSUED 1237 PM CDT SAT JUN 21 2008

SFC TROUGH HAS PUSHED THROUGH PIA/BMI/SPI... GREATLY REDUCING
CHANCES FOR CONVECTION AT THESE TERMINALS FOR THE REST OF THE
AFTERNOON. CONDITIONS STILL FAVORABLE FOR STORMS TO FIRE BEFORE
THE TROUGH CLEARS CMI AND DEC... BUT SO FAR ALL IS QUIET. WILL
WATCH CAREFULLY AND AMEND AS NECESSARY... BUT HELD ONTO TEMPO
TSRA GROUPS AT DEC AND CMI FOR THE TIME BEING.

FOG THREAT SHOULD BE NIL OVERNIGHT EXCEPT IN ISOLATED LOCATIONS
THAT RECEIVE PRECIP THIS AFTERNOON. WILL NEED TO WATCH KBMI
DEWPOINTS THROUGH THE AFTERNOON AS THEY RECEIVED A GOOD DUMPING
THIS MORNING. OTHERWISE KEPT TAFS FOG-FREE DUE TO UNCERTAINTIES IN
CONVECTIVE COVERAGE.

HARDIMAN

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

Hazardous weather outlook, Jun 21, 11:36 AM CDT, 2 hours 23 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
1136 AM CDT SAT JUN 21 2008

ILZ038-042>046-051>057-061>063-066>068-071>073-221100-
CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DE WITT-
DOUGLAS-EDGAR-EFFINGHAM-JASPER-LAWRENCE-LOGAN-MACON-MCLEAN-
MOULTRIE-PIATT-RICHLAND-SANGAMON-SHELBY-VERMILION-
1136 AM CDT SAT JUN 21 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL BE POSSIBLE THROUGH THIS EVENING AS
A SURFACE TROUGH MOVES ACROSS THE AREA. A FEW OF THESE STORMS MAY
BECOME SEVERE...MAINLY BETWEEN 2 PM AND 8 PM. LARGE HAIL AND
DAMAGING WIND GUSTS ARE THE PRIMARY THREAT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE AREA AGAIN ON SUNDAY.
A FEW STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS.

ADDITIONAL DISTURBANCES WILL IMPACT THE REGION TUESDAY NIGHT
THROUGH FRIDAY. THESE DISTURBANCES WILL ALSO BRING THE REGION A
CHANCE OF THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED BETWEEN 2 PM AND 8 PM.

ILZ027>031-036-037-040-041-047>050-221100-
CASS-FULTON-KNOX-MARSHALL-MASON-MENARD-MORGAN-PEORIA-SCHUYLER-
SCOTT-STARK-TAZEWELL-WOODFORD-
1136 AM CDT SAT JUN 21 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ISOLATED THUNDERSTORMS WILL BE POSSIBLE THROUGH THIS EVENING...
SOME OF WHICH WILL BE CAPABLE OF PRODUCING SMALL HAIL. THE BEST
FORCING HAS ALREADY SHIFTED EAST OF THE AREA...THUS THE BETTER
THREAT FOR SEVERE WEATHER WILL BE ACROSS EAST CENTRAL ILLINOIS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE AREA AGAIN ON SUNDAY.
A FEW STORMS MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS.

ADDITIONAL DISTURBANCES WILL IMPACT THE REGION TUESDAY NIGHT
THROUGH FRIDAY. THESE DISTURBANCES WILL ALSO BRING THE REGION A
CHANCE OF THUNDERSTORMS.

THE ILLINOIS RIVER WILL REMAIN IN FLOOD DOWNSTREAM OF HAVANA OVER
THE NEXT SEVERAL DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED THROUGH THIS AFTERNOON.

HARDIMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 2:43 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland, Jasper	47 min
Jun 21, 3:38 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Moultrie	52 min
Jun 21, 4:50 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Jasper	40 min
Jun 21, 5:32 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Jasper	43 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2008 Every severe thunderstorm warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.