Alert archive / Illinois / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 108, NWS Lincoln, IL

May 10, 2003Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 10, 2003, 8:56 AM CDT for Piatt County, Illinois. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 10, 2003, 8:56 AM CDT (13:56 UTC)
Expired: May 10, 2003, 9:30 AM CDT
In force: 34 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Piatt County, IL

The radar

The Lincoln radar (KILX), 65 km from the middle of the area, began a volume at 13:58 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.

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
May 10, 8:30 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 1.9 hours before the alert went out and 28 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: 474 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 763 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

640 
WUUS53 KILX 101356
SVRILX
ILC147-101430-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
856 AM CDT SAT MAY 10 2003

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PIATT COUNTY IN CENTRAL ILLINOIS

* UNTIL 930 AM CDT

* AT 856 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES SOUTHWEST OF CERRO GORDO...OR ABOUT 5
  MILES SOUTHEAST OF DECATUR...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CERRO GORDO
  BEMENT

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.

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 3993 8876 3980 8875 3981 8848 4002 8848

$$

PLAHMER

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 May 10, 3:00 AM CDT, 5 hours 56 minutes earlier.

Area forecast discussion, May 10, 3:00 AM CDT, 5 hours 56 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
300 AM CDT SAT MAY 10 2003

HIGHLIGHT OF FORECAST PACKAKE IS ANOTHER DAY OF SEVERE WEATHER INTO
TONIGHT ALONG WITH HEAVY RAINS. ONGOING THUNDESTORMS OVER
EASTCENTRAL IL EARLY THIS MORNING THAT WERE SEVERE EARLIER WITH
SEVERAL LARGE HAIL REPORTS UP TO SOFTBALL SIZE. YET ANOTHER ROUND
EXPECTED LATER TODAY AND TONIGHT ESPECIALLY THIS EVENING. SPC DAY1
OUTLOOK CONTINUES TO HAVE IL IN A MODERATE RISK FOR CHANCE OF
SUPERCELLS WITH LARGE HAIL...DAMAGING WIND GUSTS AND POSSIBLE
TORNADOES. THIS WILL BE THE 5TH DAY OF SEVERE WEATHER IN THE PAST
WEEK

SYNOPTICALLY MODELS SIMILAR WITH NEGATIVELY TILTED UPPER LEVEL TROF
PIVOTING FROM THE CENTRAL ROCKIES NE INTO THE GREAT LAKES TONIGHT
WHILE STRONG SURFACE LOW OVER THE OK PANHANDLE DEEPENS AS IT MOVES
NE INTO EAST KS BY 18Z AND INTO FAR NW IL BY 06Z TONIGHT BRINGING A
COLD FRONT EAST THRU THE STATE TONIGHT. ONGOING CONVECTION NORTH OF
I-70 TO GRADUALLY WEAKEN THIS MORNING AS LOW LEVEL JET WEAKENS AND
FOCUSED MORE TO THE SW CLOSER TO DEVELOPING LOW IN KS. SOME SUNSHINE
SHOULD APPEAR THIS AFTERNOON ALLOWING ATMOSPHERE TO BECOME VERY
UNSTABLE AGAIN WITH TROPICAL AIR MASS WITH TEMPS IN LOWER 80S AND
DEWPOINTS IN UPPER 60S AND LOWER 70S. LIFTED INDICES OF MINUS 4 TO
8C AND CAPES OF 1500 TO 3000 J/KG THIS AFTERNOON. 100 TO 120 KNOT
300 MB JET WILL ALSO PROVIDE UPPER LEVEL DIVERGENCE AND LIFT ACROSS
CENTRAL IL BY TONIGHT. WILL HAVE GOOD CHANCE OF CONVECTION TODAY
...THEN LIKELY AGAIN TONIGHT WITH COLD FRONT MOVING IN. FFG VALUES ARE
1 TO 2 INCHES PER HOUR AND 1.5 TO 2.5 INCHES IN 3 HOURS. THINK A FEW
SPOTS COULD REACH THESE VALUES...BUT DO NOT WIDESPREAD ENOUGH IN
CENTRAL IL FOR A FLOOD WATCH. BEST ORGANIZED CONVECTION TODAY IS
EAST OVER INDIANA AND SW ACROSS MO/KS. CONVECTION IS ALSO MOVING
ALONG TO THE NORTHEAST. SEVERE RISK LOOKS BEST THIS EVENING FOR ILX
CWA...THEN SHIFTS EAST OVERNIGHT AS FRONT MOVES THRU. GFS STILL
APPEARS TOO QUICK WITH FRONT GIVEN AMPLIFIED UPPER LEVEL PATTERN.

COOLER AND BREEZY ON MOTHERS DAY WITH A FAIR AMOUNT OF CLOUDINESS.
PROB30 CHANCE OF SHOWERS NORTH OF I-70 WITH STRONG SURFACE AND UPPER
LEVEL LOW OVER THE WESTERN GREAT LAKES. TEMPS NEARLY 20 DEGREES
COOLER WITH HIGHS IN THE LOWER TO MIDDLE 60S MOST AREAS. HIGH
PRESSURE BUILDING EAST INTO THE MS VALLEY MON TO BRING MOSTLY CLEAR
TO PARTLY CLOUDY SKIES WITH ANOTHER SEASONABLY COOL DAY IN THE
60S.

THANKS FOR THE SEVERE WEATHER COORDINATION SPC.

.ILX...NONE.

HUETTL

Hazardous weather outlook, May 10, 7:31 AM CDT, 1 hour 25 minutes before

ILZ027>031-036>038-040>057-061>063-066>068-071>073-111100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
731 AM CDT SAT MAY 10 2003

...A SIGNIFICANT OUTBREAK OF SEVERE WEATHER IS POSSIBLE ACROSS
PORTIONS OF CENTRAL AND SOUTHEAST ILLINOIS TODAY AND TONIGHT...

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

.DAY ONE...TODAY AND TONIGHT

A MAJOR SEVERE WEATHER OUTBREAK IS EXPECTED ACROSS PORTIONS OF
CENTRAL ILLINOIS LATE THIS AFTERNOON AND THIS EVENING. A LOW
PRESSURE SYSTEM IS EXPECTED TO MOVE FROM KANSAS INTO SOUTHEAST IOWA
BY LATE AFTERNOON. A TRAILING COLD FRONT WILL BEGIN TO MOVE INTO
ILLINOIS FROM THE WEST BY EARLY EVENING AND CROSS THE STATE DURING
THE EVENING HOURS. THE COMBINATION OF THE NEARBY FRONT...MUGGY AIR
ENTRENCHED ACROSS THE REGION...AN UPPER LEVEL DISTURBANCE
APPROACHING FROM THE WEST...AND SIGNIFICANT CHANGES IN WIND
DIRECTION WITH HEIGHT...WILL PRODUCE AN ENVIRONMENT CONDUCIVE FOR
LONG-LIVED SEVERE THUNDERSTORMS CAPABLE OF PRODUCING TORNADOES
...LARGE HAIL...STRONG DAMAGING WINDS...AND VERY HEAVY RAINFALL.
RESIDENTS OF CENTRAL AND SOUTHEAST ILLINOIS SHOULD REMAIN WEATHER
ALERT TODAY AND BE PREPARED TO TAKE ACTION IF SEVERE WEATHER WATCHES
AND WARNINGS ARE ISSUED.

IN THE MEANTIME...FOR THIS MORNING...THE MAIN SEVERE WEATHER RISK IS
LARGE HAIL AND DAMAGING WINDS...MAINLY AT LOCATIONS SOUTH OF A
PEORIA TO BLOOMINGTON LINE AND WEST OF INTERSTATE 57.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER INFORMATION WOULD BE USEFUL THIS MORNING...MAINLY SOUTH OF A
PEORIA TO CHAMPAIGN LINE. IN ADDITION...SPOTTER ACTIVATION WILL BE
NEEDED LATE THIS AFTERNOON...AND THIS EVENING.

&&
THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC
AND CLIMATE INFORMATION...IS AVAILABLE ON THE WEB AT:

HTTP://WWW.CRH.NOAA.GOV/ILX (ALL IN LOWER CASE)

BYRD

In the hours before

Local storm report, May 10, 7:09 AM CDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
709 AM CDT SAT MAY 10 2003

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

0700 AM    WOODSON                   IL   .88 INCH HAIL
05/10/03   MORGAN                         REPORTED BY MORGAN COUNTY
                                          SHERIFF.

KELLY

Local storm report, May 10, 7:13 AM CDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
713 AM CDT SAT MAY 10 2003

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

0705 AM    10 W WAVERLY              IL   1.75 INCH HAIL
05/10/03   MORGAN                         REPORTED BY MORGAN COUNTY
                                          SHERIFF.

KELLY

Local storm report, May 10, 8:09 AM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
809 AM CDT SAT MAY 10 2003

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

0716 AM    ALSEY                     IL   FLOOD
05/10/03   SCOTT                          WATER OVER IL ROUTE 106
                                          SOUTH OF ALSEY. REPORTED BY
                                          STATE POLICE DISTRICT 20.

0700 AM    GLASGOW                   IL   .88 INCH HAIL
05/10/03   SCOTT

0740 AM    LOAMI                     IL   1.00 INCH HAIL
05/10/03   SANGAMON                       REPORT FROM COOP OBSERVER.

0755 AM    2 S DIVERNON              IL   TORNADO
05/10/03   SANGAMON                       TORNADO ON THE GROUND AT
                                          MILEPOST 77 ALONG I-55.
                                          REPORTED BY ILLINOIS STATE
                                          POLICE AND ESDA.

KELLY

Local storm report, May 10, 8:28 AM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
828 AM CDT SAT MAY 10 2003

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

0746 AM    AUBURN                    IL   1.75 INCH HAIL
05/10/03   SANGAMON                       REPORTED BY SANGAMON
                                          COUNTY ESDA.

0750 AM    DIVERNON                  IL   60 MPH TSTM WIND GUST
05/10/03   SANGAMON                       FROM SANGAMON COUNTY ESDA.

0754 AM    DIVERNON                  IL   1.75 INCH HAIL
05/10/03   SANGAMON                       FROM SANGAMON COUNTY ESDA.

0805 AM    1 N DIVERNON              IL   WIND DAMAGE
05/10/03   SANGAMON                       TREES LEVELED AR I-55
                                          MILEPOST 81. FROM SANGAMON
                                          ESDA.

0809 AM    1 E DIVERNON              IL   WIND DAMAGE
05/10/03   SANGAMON                       BARN DESTROYED AND TREES
                                          DOWN.

KELLY

Local storm report, May 10, 8:40 AM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN, IL
840 AM CDT SAT MAY 10 2003

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

0754 AM    DIVERNON                  IL   WIND DAMAGE
05/10/03   SANGAMON                       TREES DOWN.

0809 AM    DIVERNON                  IL   FLOOD
05/10/03   SANGAMON                       FLOODING REPORTED ALONG
                                          BRUSH CREEK

KELLY

Local storm report, May 10, 8:40 AM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT...COR TIME ON FIRST REPORT...
NATIONAL WEATHER SERVICE LINCOLN, IL
840 AM CDT SAT MAY 10 2003

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

0809 AM    DIVERNON                  IL   WIND DAMAGE
05/10/03   SANGAMON                       TREES DOWN.

0809 AM    DIVERNON                  IL   FLOOD
05/10/03   SANGAMON                       FLOODING REPORTED ALONG
                                          BRUSH CREEK

KELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:11 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard, Morgan, Sangamon	64 min
May 9, 8:01 PM CDT	Tornado Warning	ILX	Sangamon	29 min
May 9, 8:19 PM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell, Woodford	56 min
May 9, 8:22 PM CDT	Severe Thunderstorm Warning	ILX	Christian	38 min
May 9, 8:24 PM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell, Woodford	51 min
May 9, 8:47 PM CDT	Tornado Warning	ILX	Christian	43 min
May 9, 9:00 PM CDT	Severe Thunderstorm Warning	ILX	Clay	60 min
May 9, 9:14 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Schuyler	61 min
May 9, 9:22 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	53 min
May 9, 9:31 PM CDT	Severe Thunderstorm Warning	ILX	Jasper	44 min
May 9, 9:32 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Shelby	43 min
May 9, 9:38 PM CDT	Severe Thunderstorm Warning	ILX	Crawford	67 min
May 9, 9:43 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Lawrence, Richland	17 min
May 9, 9:59 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	46 min
May 9, 10:09 PM CDT	Severe Thunderstorm Warning	ILX	Fulton	66 min
May 9, 10:25 PM CDT	Severe Thunderstorm Warning	ILX	Knox	65 min
May 9, 10:26 PM CDT	Severe Thunderstorm Warning	ILX	Clark	34 min
May 9, 10:56 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	49 min
May 9, 11:03 PM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell	57 min
May 9, 11:06 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	24 min
May 9, 11:20 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Woodford	55 min
May 9, 11:24 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt	51 min
May 10, 12:06 AM CDT	Severe Thunderstorm Warning	ILX	Champaign	54 min
May 10, 12:33 AM CDT	Severe Thunderstorm Warning	ILX	Vermilion	42 min
May 10, 1:40 AM CDT	Severe Thunderstorm Warning	ILX	Tazewell	50 min
May 10, 2:01 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Macon	44 min
May 10, 2:14 AM CDT	Severe Thunderstorm Warning	ILX	Piatt	46 min
May 10, 6:27 AM CDT	Severe Thunderstorm Warning	ILX	Scott	48 min
May 10, 6:43 AM CDT	Severe Thunderstorm Warning	ILX	Morgan	62 min
May 10, 7:11 AM CDT	Flash Flood Warning	ILX	Morgan, Scott	4 hr
May 10, 7:17 AM CDT	Severe Thunderstorm Warning	ILX	Sangamon	58 min
May 10, 7:40 AM CDT	Severe Thunderstorm Warning	ILX	Moultrie, Shelby	35 min
May 10, 7:51 AM CDT	Severe Thunderstorm Warning	ILX	Macon	39 min
May 10, 7:53 AM CDT	Flash Flood Warning	ILX	Sangamon	4 hr
May 10, 7:56 AM CDT	Severe Thunderstorm Warning	ILX	Christian	64 min
May 10, 7:58 AM CDT	Tornado Warning	ILX	Christian, Sangamon	62 min
May 10, 8:12 AM CDT	Flash Flood Warning	ILX	Christian	4 hr
May 10, 8:26 AM CDT	Tornado Warning	ILX	Macon, Shelby	49 min
May 10, 8:48 AM CDT	Flash Flood Warning	ILX	Macon, Shelby	4 hr
May 10, 8:52 AM CDT	Tornado Warning	ILX	Moultrie	38 min
May 10, 8:58 AM CDT	Severe Thunderstorm Warning	ILX	Edgar	32 min
May 10, 8:58 AM CDT	Tornado Warning	ILX	Christian	47 min
May 10, 9:02 AM CDT	Flash Flood Warning	ILX	Coles, Douglas, Edgar, Moultrie	4 hr
May 10, 9:15 AM CDT	Severe Thunderstorm Warning	ILX	Shelby	60 min
May 10, 9:21 AM CDT	Tornado Warning	ILX	Coles, Douglas	54 min
May 10, 9:26 AM CDT	Flash Flood Warning	ILX	Champaign, Vermilion	4 hr
May 10, 10:06 AM CDT	Tornado Warning	ILX	Edgar	54 min
May 10, 10:18 AM CDT	Tornado Warning	ILX	Clark, Coles, Cumberland	42 min
May 10, 10:19 AM CDT	Flash Flood Warning	ILX	Clark, Cumberland, Effingham	4 hr
May 10, 10:24 AM CDT	Severe Thunderstorm Warning	ILX	Effingham, Moultrie, Shelby	51 min
May 10, 11:00 AM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Crawford, Cumberland, Edgar, Jasper	60 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2003 Every severe thunderstorm warning in 2003

Sources

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.