Alert archive / Illinois / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 27, NWS Lincoln, IL

May 13, 20097 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 13, 2009, 10:41 PM CDT for 7 counties in Illinois. It was in force for 49 min. 6 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: May 13, 2009, 10:41 PM CDT (03:41 UTC)
Expired: May 13, 2009, 11:30 PM CDT
In force: 49 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

Counties Christian County, IL, DeWitt County, IL, Logan County, IL, Macon County, IL, Menard County, IL, Morgan County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 28 km from the middle of the area, began a volume at 03:40 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
May 13, 10:45 PM CDT	TSTM WND DMG	Springfield, IL	TREES AND POWER LINES DOWN IN SPRINGFIELD AT SEVERAL LOCATIONS. ID 9112.
May 13, 10:55 PM CDT	TSTM WND GST 75	Elkhart, IL	FROM COUNTY ESDA
May 13, 11:15 PM CDT	TSTM WND DMG	4 S Clinton, IL	ROAD SIGNS DOWN HWY 51 AND SALT CREEK.
May 13, 11:16 PM CDT	TSTM WND DMG	Clinton, IL	NUMEROUS 5 INCH TREE LIMBS DOWN. ESTIMATED WINDS OF 65 MPH. ID 47.
May 13, 11:22 PM CDT	TSTM WND DMG	5 E Clinton, IL	LARGE TREE DOWN OVER HWY 54 AT CLINTON LAKE.
May 13, 11:35 PM CDT	TSTM WND DMG	Mount Zion, IL	TREE REPORTED BLOWN DOWN BY COUNTY SHERIFF.

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 5 storm reports to this severe thunderstorm warning; the first came 4 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
May 13, 6:02 PM CDT	Tornado Watch	SPC	5 hr
May 13, 9:56 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.7 hours before the alert went out and 71 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: 1574 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 930 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 407 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 8.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 140341
SVRILX
ILC021-039-107-115-129-137-167-140430-
/O.NEW.KILX.SV.W.0027.090514T0341Z-090514T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1041 PM CDT WED MAY 13 2009

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CHRISTIAN COUNTY IN CENTRAL ILLINOIS...
  SOUTHERN DE WITT COUNTY IN CENTRAL ILLINOIS...
  SOUTHERN LOGAN COUNTY IN CENTRAL ILLINOIS...
  MACON COUNTY IN CENTRAL ILLINOIS...
  MENARD COUNTY IN CENTRAL ILLINOIS...
  SANGAMON COUNTY IN CENTRAL ILLINOIS...
  SOUTHEASTERN MORGAN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 1130 PM CDT.

* AT 1041 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 5 MILES SOUTHEAST OF
  GREENVIEW TO SHERMAN TO 6 MILES SOUTH OF FRANKLIN...OR ALONG A LINE
  EXTENDING FROM 11 MILES SOUTH OF MASON CITY TO 8 MILES NORTH OF
  SPRINGFIELD TO 16 MILES SOUTHEAST OF JACKSONVILLE...AND WAS MOVING
  EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MIDDLETOWN...
  SPRINGFIELD...
  RIVERTON...
  ELKHART...
  CORNLAND...
  CHATHAM...
  ROCHESTER...
  AUBURN...

OTHER LOCATIONS IN THIS WARNING INCLUDE...ALEXANDER...ARGENTA...
ATHENS...BEASON...BLUE MOUND...CHATHAM...CHESTNUT...CLINTON...
DECATUR...DIVERNON...EDINBURG...FORSYTH...HARRISTOWN...ILLIOPOLIS...
KENNEY...KINCAID...LATHAM...LINCOLN...LOAMI...LONG CREEK...MACON...
MAROA...MECHANICSBURG...MOUNT AUBURN...MOUNT PULASKI...MOUNT ZION...
NEW BERLIN...NIANTIC...OREANA...PAWNEE...PETERSBURG...PLEASANT
PLAINS...STONINGTON...WARRENSBURG...WAVERLY AND WILLIAMSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4022 8877 3980 8877 3957 8923 3953 9021
      3987 8999 4011 8983
TIME...MOT...LOC 0341Z 262DEG 44KT 4004 8966 3989 8961
          3953 9007

$$

HUETTL

4 follow-up statements

000 
WWUS53 KILX 140351
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1051 PM CDT WED MAY 13 2009

ILC021-039-107-115-129-137-167-140430-
/O.CON.KILX.SV.W.0027.000000T0000Z-090514T0430Z/
CHRISTIAN IL-MORGAN IL-SANGAMON IL-MACON IL-MENARD IL-DE WITT IL-
LOGAN IL-
1051 PM CDT WED MAY 13 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR SOUTHERN LOGAN...SOUTHERN DE WITT...MENARD...MACON...SANGAMON...
SOUTHEASTERN MORGAN AND NORTHERN CHRISTIAN COUNTIES...

AT 1051 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM ELKHART TO DAWSON TO
LOWDER...MOVING EAST AT 50 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
ROCHESTER...BUFFALO...AUBURN...MOUNT PULASKI...MECHANICSBURG...
GLENARM...BERRY...ROBY...PAWNEE AND LATHAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4022 8877 3980 8877 3957 8923 3953 9021
      3987 8999 4011 8983
TIME...MOT...LOC 0351Z 262DEG 44KT 4005 8950 3990 8945
          3955 8992

$$

HUETTL

000 
WWUS53 KILX 140408
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1108 PM CDT WED MAY 13 2009

ILC021-039-107-115-129-137-167-140430-
/O.CON.KILX.SV.W.0027.000000T0000Z-090514T0430Z/
CHRISTIAN IL-MORGAN IL-SANGAMON IL-MACON IL-MENARD IL-DE WITT IL-
LOGAN IL-
1108 PM CDT WED MAY 13 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR SOUTHERN LOGAN...SOUTHERN DE WITT...MENARD...MACON...SANGAMON...
SOUTHEASTERN MORGAN AND NORTHERN CHRISTIAN COUNTIES...

AT 1105 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM BEASON TO NIANTIC TO 
DIVERNON...MOVING EAST AT 50 MPH. THIS STORM PRODUCED 75 MPH WINDS
IN ELKART IN SOUTHWEST LOGAN COUNTY AT 1055 PM.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
WARRENSBURG...SICILY...ROWELL...MOUNT AUBURN...TOVEY...MAROA...
KINCAID...HARRISTOWN...WELDON SPRINGS STATE PARK AND CLINTON LAKE
DAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4022 8877 3980 8877 3957 8923 3953 9021
      3987 8999 4011 8983
TIME...MOT...LOC 0407Z 262DEG 44KT 4015 8921 3990 8915
          3956 8965

$$

HUETTL

000 
WWUS53 KILX 140415
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1115 PM CDT WED MAY 13 2009

ILC129-137-140425-
/O.CAN.KILX.SV.W.0027.000000T0000Z-090514T0430Z/
MORGAN IL-MENARD IL-
1115 PM CDT WED MAY 13 2009

...THE SEVERE THUNDERSTORM WARNING FOR MENARD AND SOUTHEASTERN MORGAN
COUNTIES IS CANCELLED...

LAT...LON 3986 8990 4022 8877 3980 8877 3957 8923
      3954 8993
TIME...MOT...LOC 0415Z 262DEG 44KT 4015 8901 3991 8903
          3957 8953

$$

ILC021-039-107-115-167-140430-
/O.CON.KILX.SV.W.0027.000000T0000Z-090514T0430Z/
CHRISTIAN IL-SANGAMON IL-MACON IL-DE WITT IL-LOGAN IL-
1115 PM CDT WED MAY 13 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR SOUTHEASTERN LOGAN...SOUTHERN DE WITT...MACON...SANGAMON AND
NORTHERN CHRISTIAN COUNTIES...

AT 1115 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM CLINTON TO WARRENSBURG TO
SICILY...MOVING EAST AT 50 MPH.

LOCATIONS NEAR THE PATH OF SEVERE THUNDERSTORMS INCLUDE...WELDON
SPRINGS STATE PARK...TOVEY...MAROA...KINCAID...CLINTON LAKE DAM...
SHARPSBURG...OREANA...LANE...BOODY AND DECATUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3986 8990 4022 8877 3980 8877 3957 8923
      3954 8993
TIME...MOT...LOC 0415Z 262DEG 44KT 4015 8901 3991 8903
          3957 8953

$$

HUETTL

000 
WWUS53 KILX 140432
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1132 PM CDT WED MAY 13 2009

ILC021-039-107-115-167-140441-
/O.EXP.KILX.SV.W.0027.000000T0000Z-090514T0430Z/
CHRISTIAN IL-SANGAMON IL-MACON IL-DE WITT IL-LOGAN IL-
1132 PM CDT WED MAY 13 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOGAN...SOUTHERN
DE WITT...MACON...SANGAMON AND NORTHERN CHRISTIAN COUNTIES EXPIRES AT
1130 PM CDT...

A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1215 AM FOR MACON...
CHRISTIAN...MOULTRIE...PIATT...CHAMPAIGN...EASTERN DE WITT...
NORTHERN SHELBY AND NORTHWESTERN DOUGLAS COUNTIES. 

..HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE
WITH THESE THUNDERSTORMS.

IN ADDITION...STRONG TO SEVERE THUNDERSTORMS MAY REDEVELOP...AND A 
SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 4 AM.

LAT...LON 3986 8990 4022 8877 3980 8877 3957 8923
      3954 8993
TIME...MOT...LOC 0415Z 262DEG 44KT 4015 8900 3991 8903
          3957 8953

$$

HUETTL

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 May 13, 8:54 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, May 13, 8:54 PM CDT, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
854 PM CDT WED MAY 13 2009

.DISCUSSION...
ISSUED 851 PM CDT WED MAY 13 2009
ONGOING CONVECTION PRODUCING A LINE OF STORMS AHEAD OF A SLOWLY
ADVANCING COLD FRONT. PLENTY OF PRECIP ALREADY TODAY...AND MORE ON
THE WAY. CONTINUING THE FLASH FLOOD WATCH THROUGH THE OVERNIGHT
HOURS. SEVERAL UPDATES ANTICIPATED TO UPDATE FOR SEVERE WEATHER
WATCH CANCELLATIONS AS THE WEATHER MOVES THROUGH. OTHER THAN
THAT... FORECAST IS ON TRACK.

HJS
&&

.AVIATION...
ISSUED 645 PM CDT WED MAY 13 2009

MAIN FORECAST ISSUE WILL BE THE TIMING OF THE LINE OF STORMS JUST
WEST OF THE MISSISSIPPI RIVER. ISOLATED SUPERCELLS LOCATED ALONG
THE LINE PRODUCING TORNADOES JUST EAST OF KIRKSVILLE EARLIER THIS
EVENING. LINE OF STORMS TIMED INTO OUR WRN TAF SITES BETWEEN 01Z
AND 03Z...AND TWDS 05 OR 06Z IN CMI. WL HAVE TO WATCH FOR THE
STORMS TO START TO BOW OUT/ACCELERATE WITH THE MAIN THREAT BEING
FROM STRAIGHT LINE WIND DAMAGE. HAVE INCLUDED VRB30G40KTS AT THE
TAF SITES AS THE GUST FRONT PUSHES ACRS THE AREA IN ADVANCE OF THE
MAIN LINE. OTHER THAN SOME TEMPO GROUPS WITH THE TSRA...WHICH WILL
INCLUDE SOME MVFR CIGS...WL CONTINUE TO HOLD ONTO VFR CONDITIONS
AT ALL SITES DURING THIS FCST PD. GUSTY SOUTH WINDS WL BECOME
SOUTHWEST JUST AHEAD OF THE FRONT AND THEN NORTHWEST AFTR MIDNIGHT
AS THE FRONT SHIFTS OFF TO OUR EAST.

SMITH
&&

.PREV DISCUSSION...
ISSUED 231 PM CDT WED MAY 13 2009

ACTIVE WEATHER AFFECTING CENTRAL AND SOUTHEAST ILLINOIS SO FAR
TODAY...WITH RAINFALL AMOUNTS OF 1.5 TO 3 INCHES FAIRLY
COMMON...PRIMARILY EAST OF I-55. RAIN WAS ASSOCIATED WITH A WARM
FRONT LIFTING NORTHWARD ACROSS THE AREA...AND HAD BECOME MORE
SCATTERED IN NATURE BY MID AFTERNOON. WELL DEFINED MCV MOVING
NORTHEAST FROM SOUTH CENTRAL MISSOURI...WITH THUNDERSTORMS
INCREASING IN THAT AREA.

MAIN FORECAST ISSUES ARE IN THE SHORT TERM...WITH SEVERE WEATHER
CHANCES TONIGHT AND AGAIN ON FRIDAY.

SHORT TERM...TONIGHT THROUGH SATURDAY...

MAIN SYNOPTIC COLD FRONT EXTENDED FROM NORTH CENTRAL MINNESOTA TO
THE OKLAHOMA PANHANDLE AT MID AFTERNOON. INSTABILITY INCREASING
ACROSS MISSOURI AND WESTERN ILLINOIS...IN THE WARM SECTOR AND
WHERE SOME BREAKS IN THE CLOUDS WERE LOCATED. LIFTED INDICES AT
18Z WERE APPROACHING -5 IN THE WESTERN CWA AND WERE EVEN LOWER IN
MISSOURI...WHILE CAPES WERE RISING INTO THE 4-DIGIT RANGE. 18Z
SOUNDING FROM LINCOLN STILL SHOWED A DECENT AMOUNT OF
CAPPING...BUT THIS SHOULD CONTINUE TO WEAKEN..WHICH IT HAS ALREADY
DONE FURTHER WEST. THUNDERSTORMS PROGGED TO CONTINUE INCREASING
INTO THE EVENING...WITH MODELS SHOWING THE FRONT NEAR I-55 AROUND
MIDNIGHT AND CLEARING THE SOUTHEAST CWA JUST AFTER SUNRISE.
POTENTIAL EXISTS FOR ANOTHER COUPLE OF INCHES OF RAIN...ESPECIALLY
ALONG THE I-70 CORRIDOR. DUE TO THIS AND THE EARLIER
RAINFALL...WILL ISSUE A FLOOD WATCH FOR AREAS EAST OF I-55 THROUGH
7 AM THURSDAY.

MODELS IN GOOD AGREEMENT WITH THE FRONT PUSHING TO AROUND THE OHIO
RIVER BY THURSDAY EVENING...WITH HIGH PRESSURE BUILDING ACROSS THE
MIDWEST. HOWEVER...FRONT EXPECTED TO RETREAT NORTHWARD TO AROUND
I-80 BY LATE FRIDAY AFTERNOON. THUNDER CHANCES TO INCREASE AGAIN
IN THE WARM SECTOR AND CONTINUE THROUGH THE NIGHT...AS ANOTHER
COLD FRONT SWEEPS ACROSS THE AREA.

LONG TERM...SUNDAY THROUGH WEDNESDAY...

NORTHWEST FLOW EXPECTED TO SET UP EARLY IN THE WEEK...WITH MAIN
STORM TRACK TO REMAIN NORTH OF THE FORECAST AREA. FORECAST WILL BE
DRY DURING THIS PERIOD.

GEELHART

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
FLOOD WATCH UNTIL 7 AM CDT THURSDAY FOR ILZ038-042>046-051>057-
061>063-066>068-071>073.

&&

Hazardous weather outlook, May 13, 3:21 PM CDT, 7 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
321 PM CDT WED MAY 13 2009

ILZ027-036-040-041-047-049-050-142030-
CASS-FULTON-KNOX-MASON-MORGAN-SCHUYLER-SCOTT-
321 PM CDT WED MAY 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL DEVELOP AHEAD OF AN APPROACHING COLD FRONT
ACROSS THE ILLINOIS RIVER VALLEY THIS EVENING...THEN WILL
SPREAD EASTWARD TO THE I-55 CORRIDOR LATE THIS EVENING. ATMOSPHERIC
CONDITIONS WILL BE FAVORABLE TO SUPPORT ROTATING UPDRAFTS WITH THE
STORMS...ENHANCING THE THREAT FOR LARGE HAIL IN EXCESS OF
QUARTER-SIZED...WINDS GREATER THAN 60 MPH...AND A FEW TORNADOES.
IN ADDITION...LOCALLY HEAVY RAINFALL WILL BE LIKELY...AGGRAVATING
ONGOING FLOODING ISSUES IN THE AREA.

THE ILLINOIS RIVER WILL REMAIN IN FLOOD FOR THE NEXT SEVERAL
DAYS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER WEATHER SYSTEM WILL BRING ADDITIONAL THUNDERSTORM CHANCES
INTO THE REGION FOR THURSDAY NIGHT THROUGH SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON AND
EVENING...PRIMARILY FROM 4 PM TO 11 PM.

ILZ028>031-037-048-142030-
MARSHALL-MENARD-PEORIA-STARK-TAZEWELL-WOODFORD-
321 PM CDT WED MAY 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL DEVELOP AHEAD OF AN APPROACHING COLD FRONT
ACROSS THE ILLINOIS RIVER VALLEY THIS EVENING...THEN WILL
SPREAD EASTWARD TO THE I-55 CORRIDOR LATE THIS EVENING. ATMOSPHERIC
CONDITIONS WILL BE FAVORABLE TO SUPPORT ROTATING UPDRAFTS WITH THE
STORMS...ENHANCING THE THREAT FOR LARGE HAIL IN EXCESS OF
QUARTER-SIZED...WINDS GREATER THAN 60 MPH...AND A FEW TORNADOES.
IN ADDITION...LOCALLY HEAVY RAINFALL WILL BE LIKELY...AGGRAVATING
ONGOING FLOODING ISSUES IN THE AREA.

THE ILLINOIS RIVER WILL REMAIN IN FLOOD FOR THE NEXT SEVERAL
DAYS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER WEATHER SYSTEM WILL BRING ADDITIONAL THUNDERSTORM CHANCES
INTO THE REGION FOR THURSDAY NIGHT THROUGH SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON AND
EVENING...PRIMARILY FROM 4 PM TO 11 PM.

ILZ038-042>046-051>057-061-142030-
CHAMPAIGN-CHRISTIAN-COLES-DE WITT-DOUGLAS-EDGAR-LOGAN-MACON-
MCLEAN-MOULTRIE-PIATT-SANGAMON-SHELBY-VERMILION-
321 PM CDT WED MAY 13 2009

...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING...

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

.DAY ONE...TONIGHT

THUNDERSTORMS WILL DEVELOP AHEAD OF AN APPROACHING COLD FRONT
ACROSS THE I-55 CORRIDOR THIS EVENING...THEN SPREAD EAST INTO
EASTERN ILLINOIS LATE THIS EVENING. ATMOSPHERIC CONDITIONS WILL BE
FAVORABLE TO SUPPORT ROTATING UPDRAFTS WITH THE STORMS...ENHANCING
THE THREAT FOR LARGE HAIL IN EXCESS OF QUARTER- SIZED...WINDS
GREATER THAN 60 MPH...AND A FEW TORNADOES. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL BE LIKELY...AGGRAVATING ONGOING FLOODING
ISSUES IN THE AREA. THE STORMS WILL PUSH INTO EAST-CENTRAL
ILLINOIS BY LATER THIS EVENING.

THE ILLINOIS RIVER WILL REMAIN IN FLOOD FOR THE NEXT SEVERAL
DAYS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER WEATHER SYSTEM WILL BRING ADDITIONAL THUNDERSTORM CHANCES
INTO THE REGION FOR THURSDAY NIGHT THROUGH SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON AND
EVENING...PRIMARILY FROM 5 PM TO 12 AM.

ILZ062-063-066>068-071>073-142030-
CLARK-CLAY-CRAWFORD-CUMBERLAND-EFFINGHAM-JASPER-LAWRENCE-RICHLAND-
321 PM CDT WED MAY 13 2009

...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING...

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

.DAY ONE...TONIGHT

OCCASIONAL THUNDERSTORMS WILL CONTINUE ACROSS SOUTHEAST ILLINOIS
THROUGH THE LATE AFTERNOON AND EVENING. SMALL HAIL AND LOCALLY HEAVY
RAINFALL WILL BE LIKELY WITH THE STORMS. ADDITIONAL STORMS WILL
DEVELOP AHEAD OF AN APPROACHING DISTURBANCE TO THE SOUTHWEST THIS
EVENING...WITH THE PRIMARY THREAT FROM THE STORMS BEING DAMAGING
WIND GUSTS IN EXCESS OF 60 MPH. LARGE HAIL IN EXCESS OF QUARTER-
SIZED AND ISOLATED TORNADOES WILL ALSO BE POSSIBLE. THE STORMS
WILL PUSH INTO INDIANA SHORTLY AFTER MIDNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER WEATHER SYSTEM WILL BRING ADDITIONAL THUNDERSTORM CHANCES
INTO THE REGION FOR THURSDAY NIGHT THROUGH SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS EVENING AFTER 5 PM.

25

In the hours before

Local storm report, May 13, 10:17 PM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1017 PM CDT WED MAY 13 2009

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

0945 PM     HAIL             MEREDOSIA               39.83N 90.56W
05/13/2009  E1.00 INCH       MORGAN             IL   LAW ENFORCEMENT

            1 INCH HAIL WITH STRONG WINDS.

1000 PM     HAIL             3 E MEREDOSIA           39.83N 90.50W
05/13/2009  E0.75 INCH       MORGAN             IL   EMERGENCY MNGR

1005 PM     HAIL             CHAPIN                  39.77N 90.40W
05/13/2009  E0.75 INCH       MORGAN             IL   EMERGENCY MNGR

&&

AJ

Local storm report, May 13, 10:18 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LINCOLN IL
1018 PM CDT WED MAY 13 2009

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

0553 PM     HAIL             1 N EL PASO             40.75N 89.01W
05/13/2009  E1.00 INCH       WOODFORD           IL   PUBLIC

0558 PM     HAIL             EL PASO                 40.74N 89.01W
05/13/2009  M0.88 INCH       WOODFORD           IL   EMERGENCY MNGR

            FROM EMERGENCY MANAGEMENT

0945 PM     HAIL             MEREDOSIA               39.83N 90.56W
05/13/2009  E1.00 INCH       MORGAN             IL   LAW ENFORCEMENT

            1 INCH HAIL WITH STRONG WINDS.

0955 PM     HEAVY RAIN       GALESBURG               40.95N 90.38W
05/13/2009  M2.10 INCH       KNOX               IL   BROADCAST MEDIA

            MEDIA REPORT OF HEAVY RAINFALL IN GALESBURG.

1000 PM     HAIL             3 E MEREDOSIA           39.83N 90.50W
05/13/2009  E0.75 INCH       MORGAN             IL   EMERGENCY MNGR

1005 PM     HAIL             CHAPIN                  39.77N 90.40W
05/13/2009  E0.75 INCH       MORGAN             IL   EMERGENCY MNGR

&&

AJ

Local storm report, May 13, 10:26 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1026 PM CDT WED MAY 13 2009

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

1023 PM     NON-TSTM WND DMG SPRINGFIELD             39.78N 89.64W
05/13/2009                   SANGAMON           IL   TRAINED SPOTTER

            REPORTED TREE DOWN AND TRANSFORMER BLOWN IN SPRINGFIELD.
            ID 9112.

&&

AJ

Local storm report, May 13, 10:38 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1038 PM CDT WED MAY 13 2009

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

1000 PM     TSTM WND GST     7 W CHILLICOTHE         40.92N 89.63W
05/13/2009  E60 MPH          PEORIA             IL   TRAINED SPOTTER

&&

AJ

Local storm report, May 13, 10:39 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1039 PM CDT WED MAY 13 2009

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

1032 PM     HAIL             MURRAYVILLE             39.58N 90.25W
05/13/2009  E1.00 INCH       MORGAN             IL   EMERGENCY MNGR

            1 INCH HAIL WITH 60 MPH WIND GUST.

&&

AJ

Local storm report, May 13, 10:41 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1041 PM CDT WED MAY 13 2009

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

1032 PM     TSTM WND GST     WOODSON                 39.63N 90.22W
05/13/2009  E75 MPH          MORGAN             IL   EMERGENCY MNGR

&&

AJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 8:15 PM CDT	Tornado Warning	ILX	Schuyler	45 min
May 13, 9:28 PM CDT	Special Weather Statement	ILX	Peoria	47 min
May 13, 9:30 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Morgan, Scott	45 min
May 13, 9:45 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria, Stark, Woodford	36 min
May 13, 9:52 PM CDT	Flash Flood Warning	ILX	Schuyler	8 hr
May 13, 10:00 PM CDT	Flash Flood Warning	ILX	Cass, Morgan, Scott	8 hr
May 13, 10:11 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard, Morgan, Sangamon, Scott	49 min
May 13, 10:25 PM CDT	River Flood Warning	ILX	Lawrence	11 days
May 13, 10:29 PM CDT	Flash Flood Warning	ILX	Fulton	8 hr
May 13, 10:48 PM CDT	Special Weather Statement	ILX	McLean	57 min
May 13, 10:55 PM CDT	Flash Flood Warning	ILX	Christian, Morgan, Sangamon	6 hr
May 13, 11:07 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean	37 min
May 13, 11:12 PM CDT	Flash Flood Warning	ILX	McLean, Woodford	6 hr
May 13, 11:27 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Christian, DeWitt, Douglas, Macon, Moultrie and 2 more	48 min
May 13, 11:38 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Piatt	13 min
May 13, 11:56 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Effingham, Shelby	64 min
May 14, 12:00 AM CDT	Flash Flood Warning	ILX	Macon, Moultrie, Piatt	6 hr
May 14, 12:07 AM CDT	Severe Thunderstorm Warning	ILX	Champaign, Christian, Coles, Cumberland, Douglas, Edgar and 4 more	38 min
May 14, 12:19 AM CDT	Tornado Warning	ILX	Coles, Cumberland, Moultrie, Shelby	56 min
May 14, 12:35 AM CDT	Tornado Warning	ILX	Coles, Douglas, Moultrie, Shelby	38 min
May 14, 12:44 AM CDT	Severe Thunderstorm Warning	ILX	Clark, Clay, Coles, Cumberland, Edgar, Effingham and 2 more	61 min
May 14, 12:56 AM CDT	Flash Flood Warning	ILX	Champaign, Douglas, Edgar, Vermilion	6 hr
May 14, 1:00 AM CDT	Flash Flood Warning	ILX	Christian, Clark, Coles, Cumberland, Douglas, Edgar and 2 more	6 hr
May 14, 1:12 AM CDT	Severe Thunderstorm Warning	ILX	Edgar	38 min
May 14, 1:18 AM CDT	Severe Thunderstorm Warning	ILX	Clark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more	57 min
May 14, 1:41 AM CDT	Flash Flood Warning	ILX	Clark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more	5 hr
May 14, 2:14 AM CDT	Severe Thunderstorm Warning	ILX	Clay, Crawford, Jasper, Lawrence, Richland	43 min
May 14, 7:36 AM CDT	Areal Flood Warning	ILX	Champaign, Christian, Clark, Clay, Coles, Crawford and 12 more	5 hr
May 14, 12:24 PM CDT	River Flood Warning	ILX	Fulton, Knox	6 days
May 14, 3:02 PM CDT	Flash Flood Watch	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more	32 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2009 Every severe thunderstorm warning in 2009

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.