Alert archive / Illinois / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 237, NWS Lincoln, IL

July 21, 20085 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 21, 2008, 10:07 PM CDT for 5 counties in Illinois. It was in force for 53 min. 4 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: Jul 21, 2008, 10:07 PM CDT (03:07 UTC)
Expired: Jul 21, 2008, 11:00 PM CDT
In force: 53 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

Counties Champaign County, IL, Coles County, IL, Douglas County, IL, Moultrie County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 118 km from the middle of the area, began a volume at 03:08 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
Jul 21, 10:25 PM CDT	TSTM WND GST 60	Tuscola, IL
Jul 21, 10:30 PM CDT	TSTM WND DMG	Humboldt, IL	TREE LIMBS DOWN.
Jul 21, 10:30 PM CDT	TSTM WND GST 70	Humboldt, IL
Jul 21, 10:45 PM CDT	TSTM WND DMG	Oakland, IL	TREES DOWN AND POWER OUTAGES FROM OAKLAND TO ASHMORE.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this severe thunderstorm warning; the first came 18 minutes after it went out.

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
Jul 21, 7:20 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.1 hours before the alert went out and 74 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: 3634 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 17.9

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 220307
SVRILX
ILC019-029-041-139-147-220400-
/O.NEW.KILX.SV.W.0237.080722T0307Z-080722T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1007 PM CDT MON JUL 21 2008

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COLES COUNTY IN EAST CENTRAL ILLINOIS...
  MOULTRIE COUNTY IN CENTRAL ILLINOIS...
  DOUGLAS COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTHEASTERN PIATT COUNTY IN CENTRAL ILLINOIS...
  SOUTHWESTERN CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 1100 PM CDT.

* AT 1007 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 4
  MILES WEST OF HAMMOND...OR ABOUT 14 MILES NORTH OF SULLIVAN...AND
  WAS MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ATWOOD...
  SULLIVAN...
  ARTHUR...
  ALLENVILLE...
  COOKS MILL...
  TUSCOLA...
  ARCOLA...
  HUMBOLDT...

OTHER LOCATIONS IN THIS WARNING INCLUDE...ASHMORE...BEMENT...
BETHANY...CAMARGO...CHARLESTON...HINDSBORO...LOVINGTON...MATTOON...
NEWMAN...OAKLAND...PESOTUM...RARDIN AND VILLA GROVE.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 188 AND 222.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS...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.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND 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 3948 8799 3948 8801 3945 8801 3938 8805
      3947 8837 3961 8881 3999 8859 3989 8797
      3951 8798
TIME...MOT...LOC 0307Z 294DEG 30KT 3978 8863

$$

AUTEN

3 follow-up statements

000 
WWUS53 KILX 220339
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1039 PM CDT MON JUL 21 2008

ILC139-147-220349-
/O.CAN.KILX.SV.W.0237.000000T0000Z-080722T0400Z/
MOULTRIE-PIATT-
1039 PM CDT MON JUL 21 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PIATT AND
MOULTRIE COUNTIES IS CANCELLED...

AT 1037 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF
THE AREA...THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 3948 8799 3948 8801 3945 8801 3938 8805
      3947 8837 3994 8830 3989 8797 3951 8798
TIME...MOT...LOC 0339Z 284DEG 38KT 3972 8813

$$

ILC019-029-041-220400-
/O.CON.KILX.SV.W.0237.000000T0000Z-080722T0400Z/
CHAMPAIGN-COLES-DOUGLAS-
1039 PM CDT MON JUL 21 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR SOUTHERN CHAMPAIGN...DOUGLAS AND COLES COUNTIES...

AT 1037 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...
AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 3
MILES NORTH OF HINDSBORO...OR ABOUT 8 MILES SOUTHEAST OF TUSCOLA...
MOVING EAST AT 44 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  NEWMAN...
  OAKLAND...
  ASHMORE...

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 188 AND 221.

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

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 3948 8799 3948 8801 3945 8801 3938 8805
      3947 8837 3994 8830 3989 8797 3951 8798
TIME...MOT...LOC 0339Z 284DEG 38KT 3972 8813

$$

AUTEN

000 
WWUS53 KILX 220350
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1050 PM CDT MON JUL 21 2008

ILC019-220400-
/O.CAN.KILX.SV.W.0237.000000T0000Z-080722T0400Z/
CHAMPAIGN-
1050 PM CDT MON JUL 21 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHAMPAIGN COUNTY IS
CANCELLED...

AT 1048 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF
THE AREA...THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 3948 8801 3944 8801 3938 8805 3940 8811
      3989 8806 3988 8797 3953 8798 3953 8799
      3950 8798
TIME...MOT...LOC 0350Z 284DEG 38KT 3969 8798

$$

ILC029-041-220400-
/O.CON.KILX.SV.W.0237.000000T0000Z-080722T0400Z/
COLES-DOUGLAS-
1050 PM CDT MON JUL 21 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR EASTERN DOUGLAS AND EASTERN COLES COUNTIES...

AT 1048 PM CDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING NICKEL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70
MPH.  THIS STORM WAS LOCATED 3 MILES NORTH OF OAKLAND...OR ABOUT 16
MILES SOUTHEAST OF TUSCOLA...MOVING EAST AT 44 MPH.

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

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK SHELTER
NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 3948 8801 3944 8801 3938 8805 3940 8811
      3989 8806 3988 8797 3953 8798 3953 8799
      3950 8798
TIME...MOT...LOC 0350Z 284DEG 38KT 3969 8798

$$

AUTEN

000 
WWUS53 KILX 220356
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1056 PM CDT MON JUL 21 2008

ILC029-041-220406-
/O.EXP.KILX.SV.W.0237.000000T0000Z-080722T0400Z/
COLES-DOUGLAS-
1056 PM CDT MON JUL 21 2008

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN DOUGLAS AND EASTERN
COLES COUNTIES EXPIRES AT 1100 PM CDT...

AT 1054 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF
THE AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3948 8801 3944 8801 3938 8805 3940 8811
      3989 8806 3988 8797 3953 8798 3953 8799
      3950 8798
TIME...MOT...LOC 0356Z 284DEG 38KT 3967 8790

$$

AUTEN

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 Jul 21, 9:11 PM CDT, 56 minutes earlier.

Area forecast discussion, Jul 21, 9:11 PM CDT, 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
911 PM CDT MON JUL 21 2008

.DISCUSSION...
ISSUED 911 PM CDT MON JUL 21 2008

CLUSTERS OF THUNDERSTORMS HAVE DEVELOPED ALONG A SLOW MOVING COLD
FRONT THIS EVENING...MAINLY ALONG AND NORTH OF THE I-72 CORRIDOR.
INITIALLY THE STORMS WERE RATHER DISCRETE IN NATURE...LEADING TO
NUMEROUS REPORTS OF LARGE HAIL AND GUSTY WINDS. IN THE PAST HOUR
OR SO...THE CELLS HAVE BEGUN TO CONGEAL INTO A MULTI-CELL LINEAR
STRUCTURE. IT APPEARS THE SEVERE WEATHER THREAT WILL CONTINUE
FURTHER EAST AND SOUTH AS THE EVENING GOES ON...WITH AN INCREASING
THREAT FOR LOCALLY HEAVY RAINFALL AND FLASH FLOODING. HAVE UPDATED
THE GRIDS TO LOWER POPS ACROSS THE FAR NORTH...AS THE MAIN AREA OF
CONVECTION HAS ALREADY SHIFTED SOUTH OF THE PEORIA AREA. FURTHER
SOUTH TOWARD THE I-72 CORRIDOR...WILL CONTINUE WITH CATEGORICAL
POPS...BUT WILL LOWER TO ONLY CHANCE POPS AFTER MIDNIGHT...AS THE
STORMS GRADUALLY SINK INTO SOUTHERN ILLINOIS.

BARNES
&&

.AVIATION...
ISSUED 640 PM CDT MON JUL 21 2008

THUNDERSTORMS STILL EXPECTED TO DEVELOP WEST OF CENTRAL IL THIS
EVENING AND THEN STORMS WILL MOVE INTO THE TAF SITES OF SPI...DEC
AND CMI COUPLE OF HOURS AFTER 00Z. CONCERNED THAT ATMOSPHERE IS
TOO WARM AND CONVECTION WILL NOT ARRIVE AS EXPECTED. SO HAVE GONE
WITH ONLY VCTS FOR NOW INSTEAD OF TEMPO GROUP. ONCE PCPN
DEVELOPS...WILL UPDATE TAFS FOR TIMING OF CONVECTION ON SITE. DO
NOT BELIEVE CONVECTION WILL AFFECT PIA AND BMI SO HAVE LEFT THEM
DRY FOR NOW. STORMS EXPECTED TO MOVE THROUGH SITES QUICKLY SO
BELIEVE PCPN WILL END IN THE AREA AROUND MIDNIGHT. AFTER THAT
EXPECT VFR CONDITIONS REMAINDER OF THE TAF PERIOD. ONLY EXPECT
SOME SCATTERED CU TOMORROW AS BOUNDARY PUSHES SOUTH OF THE AREA
AND TAF SITES EXPERIENCE NORTH TO NORTHEAST SFC WINDS DURING THE
DAY AND AFTERNOON. OVERALL WINDS WILL BE LIGHT AND VARIABLE MOST
OF THE NIGHT WITH NORTHEASTERLY WINDS TOMORROW.

AUTEN
&&

.PREV DISCUSSION...
ISSUED 227 PM CDT MON JUL 21 2008

ANOTHER WARM/HUMID DAY ONGOING ACROSS FORECAST AREA.
THE WARM/HUMID CONDITIONS...NUMEROUS CONVECTIVE OUTFLOW BOUNDARIES
FROM EARLIER TODAY...AND AN APPROACHING COLD FRONT WILL CONTINUE THE
THREAT OF SHOWERS/STORMS INTO EARLY TUESDAY. THINGS WILL SETTLE DOWN
AND GET MORE COMFORTABLE ONCE THE FRONT SINKS INTO THE OHIO VALLEY
TOMORROW. NOT SURPRISINGLY...MAIN FORECAST CONCERNS REVOLVE AROUND
PRECIPITATION CHANCES/SEVERE WEATHER THREAT UNTIL FRONTAL PASSAGE.

12Z MODELS IN REASONABLE AGREEMENT...BUT WILL TEND TO FAVOR THE
BETTER RESOLUTION NAM GIVEN THE SHORT TERM NATURE OF THE PRIMARY
FORECAST CONCERNS. IN ADDITION...THE GFS SEEMS TO BE SUFFERING FROM
SIGNIFICANT CONVECTIVE FEEDBACK.

SHORT TERM...TONIGHT THROUGH THURSDAY...

TONIGHT AND TUESDAY...WESTERN END OF APPROACHING COLD FRONT WILL
LIKELY BE THE PRIMARY FOCUS FOR CONVECTION THROUGH TONIGHT. AS OF
1930Z...AIRMASS ACROSS CENTRAL/SOUTHEAST ILLINOIS AND POINTS
UPSTREAM REMAINS CAPPED TO SURFACE BASED CONVECTION...PER 18Z KILX
SOUNDING...DUE TO EARLIER STORMS. HOWEVER...THIS CAP IS STEADILY
ERODING DUE TO STRONG INSOLATION. CAP IS EXPECTED TO BREAK INITIALLY
ACROSS EASTERN NEBRASKA/SOUTHERN IOWA WHERE THE STRONGEST LOW LEVEL
INFLOW IS LOCATED. THIS AREA IS ALSO MOST UNDER THE INFLUENCE OF AN
WEST/EAST ORIENTED JET STREAK ON THE SOUTH SIDE OF A STRONG WAVE
DIGGING INTO THE MIDWEST. THUNDERSTORMS...LIKELY EVOLVING INTO AN
MCS...WILL DEVELOP ALONG THE WESTERN EDGE OF THIS BOUNDARY IN THE
NEXT FEW HOURS. EXPECT THE STORMS TO TRACK EAST SOUTHEAST ACROSS THE
FORECAST AREA TONIGHT... ESPECIALLY THE SOUTHERN HALF. THE MAIN
SEVERE WEATHER THREAT WILL BE DAMAGING STRAIGHT LINE WINDS GIVEN THE
STRONG INSTABILITY /CAPE VALUES 3-4K J/KG/ AND MODERATELY STRONG
UNIDIRECTIONAL WIND PROFILES /0-6KM BULK SHEAR AROUND 40 KTS/. THE
FRONT SHOULD SETTLE SOUTH OF THE BULK OF THE FORECAST AREA ON
TUESDAY...BUT IT WILL BE CLOSE ENOUGH TO MAINTAIN A CHANCE OF
SHOWERS/STORMS IN SOUTHERN SECTIONS OF THE FORECAST AREA.

TUESDAY NIGHT THROUGH THURSDAY...QUIETER AND MORE COMFORTABLE
CONDITIONS ARE EXPECTED FOR THE REMAINDER OF THE SHORT TERM. AN
UNSEASONABLY DEEP UPPER LOW WILL DEVELOP OVER THE GREAT LAKES...
PLACING THE FORECAST AREA UNDER A COOLER NORTHWEST FLOW AND HIGH
PRESSURE AT THE SURFACE.

LONG TERM...THURSDAY NIGHT THROUGH MONDAY...MODELS/ENSEMBLES
CONTINUE HAVE REASONABLE AGREEMENT ON THE LARGER SCALE FLOW...BUT
DIFFER ON THE SMALL SCALE DETAILS. STRONG RIDGING WILL BE IN PLACE
ACROSS WESTERN/CENTRAL NORTH AMERICA...WITH TROFFING IN EAST. THE
TROFFING WILL BE MOST PRONOUNCED ACROSS EASTERN CANADA. NORTHWEST
FLOW EXPECTED OVER FORECAST AREA BETWEEN THE RIDGE/TROF PATTERN...
WITH HIGH PRESSURE GENERALLY SUPPORTED AT THE SURFACE. IF EVERYTHING
PANS OUT AS CURRENTLY PROGGED...CONDITIONS WILL BE MORE DRY THAN NOT
THROUGH THE PERIOD. HOWEVER...ANY IMPULSES DIVING ACROSS THE REGION
IN THE NORTHWEST FLOW HAVE THE POTENTIAL TO PRODUCE SHOWERS/STORMS.
AT THIS TIME...AN IMPULSE APPEARS MOST LIKELY TO IMPACT THE AREA
FRIDAY OR SATURDAY...THOUGH THIS IS STILL FAR FROM CERTAIN. SO...
WILL NOT CARRY ABOVE A SLIGHT CHANCE OF SHOWERS/STORMS AT THIS TIME.
TEMPERATURES/HUMIDITIES WILL BE SEASONABLE OR SLIGHTLY BELOW NORMAL
WITH THE NORTHWEST FLOW ALOFT AND SURFACE FLOW AROUND THE EXPECTED
SURFACE HIGH.

BAK

&&

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

Hazardous weather outlook, Jul 21, 2:55 PM CDT, 7 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
255 PM CDT MON JUL 21 2008

ILZ027>031-036>038-040>048-053-055-057-221100-
CASS-CHAMPAIGN-DE WITT-DOUGLAS-EDGAR-FULTON-KNOX-LOGAN-MACON-
MARSHALL-MASON-MCLEAN-MENARD-PEORIA-PIATT-SCHUYLER-STARK-TAZEWELL-
VERMILION-WOODFORD-
255 PM CDT MON JUL 21 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SHOWERS AND THUNDERSTORMS MAY RE-DEVELOP DURING THE EVENING HOURS ALONG
OUTFLOW BOUNDARIES LEFT BEHIND BY THE MORNING STORMS. SOME STORMS
COULD BE SEVERE WITH STRONG WINDS...HAIL AND HEAVY RAINFALL POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORM CHANCES WILL CONTINUE INTO TUESDAY...AS A COLD FRONT
SLOWLY DROPS SOUTHWARD THROUGH THE STATE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

ILZ049>052-054-056-061>063-066>068-071>073-221100-
CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-
LAWRENCE-MORGAN-MOULTRIE-RICHLAND-SANGAMON-SCOTT-SHELBY-
255 PM CDT MON JUL 21 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AN OLD OUTFLOW
BOUNDARY ACROSS PARTS OF CENTRAL AND SOUTHEAST ILLINOIS THIS
EVENING. THERE IS A SLIGHT RISK FOR SEVERE WEATHER...WITH THE
MAIN THREATS FROM THE STORMS BEING DAMAGING WINDS...LARGE
HAIL AND TORRENTIAL RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORM CHANCES WILL CONTINUE INTO TUESDAY...AS A COLD FRONT
SLOWLY DROPS SOUTHWARD THROUGH THE STATE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED TONIGHT.

KELLY

In the hours before

Local storm report, Jul 21, 9:06 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
906 PM CDT MON JUL 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0758 PM     TSTM WND GST     CANTON                  40.56N 90.04W
07/21/2008  E70 MPH          FULTON             IL   EMERGENCY MNGR

            65 TO 70 MPH WINDS ON THE WEST SIDE OF CANTON.

0750 PM     HAIL             CANTON                  40.56N 90.04W
07/21/2008  M1.75 INCH       FULTON             IL   TRAINED SPOTTER

&&

GEELHART

Local storm report, Jul 21, 9:20 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
920 PM CDT MON JUL 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0845 PM     HAIL             1 N PETERSBURG          40.03N 89.85W
07/21/2008  M1.00 INCH       MENARD             IL   MESONET

            COCORAHS REPORT

&&

GEELHART

Local storm report, Jul 21, 9:23 PM CDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
923 PM CDT MON JUL 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0737 PM     HAIL             ELLISVILLE              40.63N 90.31W
07/21/2008  E0.88 INCH       FULTON             IL   EMERGENCY MNGR

0748 PM     HAIL             FAIRVIEW                40.65N 90.19W
07/21/2008  E1.00 INCH       FULTON             IL   EMERGENCY MNGR

0748 PM     HAIL             1 N CUBA                40.51N 90.19W
07/21/2008  E1.00 INCH       FULTON             IL   EMERGENCY MNGR

0750 PM     HAIL             CANTON                  40.56N 90.04W
07/21/2008  M1.75 INCH       FULTON             IL   TRAINED SPOTTER

0750 PM     HAIL             CUBA                    40.49N 90.19W
07/21/2008  E2.75 INCH       FULTON             IL   TRAINED SPOTTER

0756 PM     HAIL             CANTON                  40.56N 90.04W
07/21/2008  M0.88 INCH       FULTON             IL   MESONET

            SWOP REPORT

0756 PM     HAIL             ST. DAVID               40.49N 90.05W
07/21/2008  E0.75 INCH       FULTON             IL   CO-OP OBSERVER

0758 PM     TSTM WND GST     CANTON                  40.56N 90.04W
07/21/2008  E70.00 MPH       FULTON             IL   EMERGENCY MNGR

            65 TO 70 MPH WINDS ON THE WEST SIDE OF CANTON.

0800 PM     HAIL             CANTON                  40.56N 90.04W
07/21/2008  M1.00 INCH       FULTON             IL   MESONET

            SWOP REPORT

0800 PM     HAIL             ST. DAVID               40.49N 90.05W
07/21/2008  M1.00 INCH       FULTON             IL   CO-OP OBSERVER

            NICKEL TO QUARTER SIZE.

0801 PM     HAIL             DUNFERMLINE             40.49N 90.03W
07/21/2008  M1.75 INCH       FULTON             IL   EMERGENCY MNGR

0812 PM     TSTM WND GST     MANITO                  40.42N 89.78W
07/21/2008  E60.00 MPH       MASON              IL   LAW ENFORCEMENT

0812 PM     HAIL             MANITO                  40.42N 89.78W
07/21/2008  M0.75 INCH       MASON              IL   TRAINED SPOTTER

0819 PM     TSTM WND GST     1 SSE SOUTH PEKIN       40.48N 89.64W
07/21/2008  E60.00 MPH       TAZEWELL           IL   STORM CHASER

0823 PM     HAIL             6 W SOUTH PEKIN         40.50N 89.77W
07/21/2008  M0.75 INCH       TAZEWELL           IL   MESONET

            INTERSECTION OF TOWN LINE AND MANITO ROADS. SWOP REPORT.

0825 PM     TSTM WND DMG     DELAVAN                 40.37N 89.54W
07/21/2008                   TAZEWELL           IL   MESONET

            A THIRD OF A TREE FELL ACROSS A ROAD. SWOP REPORT.

0839 PM     HAIL             6 SE LINCOLN            40.09N 89.29W
07/21/2008  E0.75 INCH       LOGAN              IL   TRAINED SPOTTER

0845 PM     HAIL             1 N PETERSBURG          40.03N 89.85W
07/21/2008  M1.00 INCH       MENARD             IL   MESONET

            COCORAHS REPORT

&&

GEELHART

Local storm report, Jul 21, 9:53 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
953 PM CDT MON JUL 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0952 PM     HAIL             2 S DECATUR             39.82N 88.93W
07/21/2008  E1.75 INCH       MACON              IL   EMERGENCY MNGR

            REPORTED AT WAND-TV ON SOUTH SIDE OF DECATUR. RELAYED BY
            MACON COUNTY EMA.

&&

GEELHART

Local storm report, Jul 21, 9:56 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
956 PM CDT MON JUL 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0953 PM     HAIL             DECATUR                 39.85N 88.93W
07/21/2008  M0.75 INCH       MACON              IL   MESONET

            SWOP REPORT.

&&

GEELHART

Local storm report, Jul 21, 10:03 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1003 PM CDT MON JUL 21 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0957 PM     HAIL             DECATUR                 39.85N 88.93W
07/21/2008  M1.00 INCH       MACON              IL   MESONET

            HAIL FALLING FOR AT LEAST 15 MINUTES. SWOP REPORT.

0957 PM     TSTM WND GST     DECATUR                 39.85N 88.93W
07/21/2008  E75 MPH          MACON              IL   MESONET

            SWOP REPORT

&&

GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 7:06 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox	39 min
Jul 21, 7:29 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Peoria, Tazewell	61 min
Jul 21, 7:53 PM CDT	Areal Flood Advisory	ILX	Fulton, Knox, Peoria	75 min
Jul 21, 8:05 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason	40 min
Jul 21, 8:06 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Menard	54 min
Jul 21, 8:13 PM CDT	Severe Thunderstorm Warning	ILX	Logan, McLean, Mason, Tazewell	62 min
Jul 21, 8:28 PM CDT	Areal Flood Advisory	ILX	Logan, McLean, Mason, Menard, Tazewell	119 min
Jul 21, 8:33 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, Macon, Mason, Menard	42 min
Jul 21, 8:37 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Menard, Sangamon	38 min
Jul 21, 8:43 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Schuyler	37 min
Jul 21, 9:04 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Piatt	56 min
Jul 21, 9:10 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, Macon, Moultrie, Piatt, Sangamon	65 min
Jul 21, 9:32 PM CDT	Areal Flood Advisory	ILX	DeWitt, Logan, McLean, Macon, Piatt	2 hr
Jul 21, 9:40 PM CDT	Areal Flood Advisory	ILX	Cass, Menard	3 hr
Jul 21, 10:18 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	57 min
Jul 21, 10:24 PM CDT	Tornado Warning	ILX	Edgar	40 min
Jul 21, 10:34 PM CDT	Areal Flood Advisory	ILX	Macon, Piatt	4 hr
Jul 21, 10:41 PM CDT	Areal Flood Advisory	ILX	Morgan, Sangamon, Scott	3 hr
Jul 21, 10:52 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Edgar	38 min
Jul 21, 10:53 PM CDT	Areal Flood Advisory	ILX	Edgar, Vermilion	4 hr
Jul 21, 11:46 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Edgar	46 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.