Alert archive / Illinois / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 43, NWS Lincoln, IL

May 11, 2005Christian County, Macon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 11, 2005, 6:13 PM CDT for Christian County, Macon County, Illinois. It was in force for 64 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 11, 2005, 6:13 PM CDT (23:13 UTC)
Expired: May 11, 2005, 7:17 PM CDT
In force: 64 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Christian County, IL, Macon County, IL

The radar

The Lincoln radar (KILX), 49 km from the middle of the area, began a volume at 23:12 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 nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.2 hours before the alert went out and 69 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: 1689 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1125 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KILX 112315
SVRILX
ILC021-115-120015-
/O.NEW.KILX.SV.W.0043.050511T2313Z-050512T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
613 PM CDT WED MAY 11 2005

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MACON COUNTY IN CENTRAL ILLINOIS
  NORTHERN CHRISTIAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 715 PM CDT

* AT 612 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  BLUE MOUND...OR ABOUT 14 MILES SOUTHWEST OF DECATUR...AND WAS
  MOVING EAST AT 5 MPH. ANOTHER SEVERE THUNDERSTORM WAS 4 MILES
  NORTHEAST OF EDINBURG MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BLUE MOUND
  MACON
  RURAL NORTHERN CHRISTIAN COUNTY
  
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 3974 8942 3966 8948 3966 8881 3979 8882
      3978 8921

$$

MILLER

2 follow-up statements

000 
WWUS53 KILX 112342
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
641 PM CDT WED MAY 11 2005

ILC021-115-120015-
/O.CON.KILX.SV.W.0043.000000T0000Z-050512T0015Z/
CHRISTIAN-MACON-
641 PM CDT WED MAY 11 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 715 PM CDT FOR
NORTHERN CHRISTIAN AND SOUTHERN MACON COUNTIES...

AT 638 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
THIS STORM WAS LOCATED 5 MILES WEST OF BLUE MOUND...OR ABOUT 13
MILES NORTH OF TAYLORVILLE...MOVING EAST AT 20 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  RURAL NORTHEAST CHRISTIAN COUNTY.
  BLUE MOUND.
  MACON.

THIS STORM HAS A HISTORY OF PRODUCING LARGE 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 3974 8928 3966 8927 3966 8882 3975 8882
      3974 8915

$$

MILLER

000 
WWUS53 KILX 120017
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
717 PM CDT WED MAY 11 2005

ILC021-115-120027-
/O.EXP.KILX.SV.W.0043.000000T0000Z-050512T0015Z/
CHRISTIAN-MACON-
717 PM CDT WED MAY 11 2005

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CHRISTIAN AND
SOUTHERN MACON COUNTIES EXPIRED AT 715 PM CDT...

AT 716 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.

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 3974 8942 3966 8948 3966 8881 3979 8882
      3978 8921

$$

MILLER

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 11, 2:00 PM CDT, 4 hours 13 minutes earlier.

Area forecast discussion, May 11, 2:00 PM CDT, 4 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
2 PM CDT WED MAY 11 2005

.DISCUSSION...

WILL BE ISSUING ZONES AND GRIDS A BIT EARLY TODAY WITH ISSUANCE OF
SEVERE THUNDERSTORM WATCH 247.

SHORT TERM...TONIGHT THROUGH SATURDAY...
ABUNDANT MESOSCALE CONCERNS REGARDING POTENTIAL CONVECTION THIS
AFTERNOON AND EVENING. OUTFLOW BOUNDARY FROM LAST NIGHTS CONVECTION
IS NOW IN PLACE FROM NEAR DANVILLE TO TAYLORVILLE AND IS PRODUCING
LOCALLY POOLING DEWPOINTS INTO THE 70S. THE 18Z KILX SOUNDING STILL
SHOWS THE SHALLOW COLD POOL ASSOCIATED WITH THIS BOUNDARY...HOWEVER
WINDS HAVE NOW BECOME SOUTHEAST AT PIA AND GBG AND 18Z SURFACE OBS
INDICATE THAT THE COOLER AIR HAS VIRTUALLY MIXED OUT ALLOWING THE
MAIN BOUNDARY TO REORGANIZE ITSELF NEAR I-80.  IN ADDITION...A
REINFORCEMENT OF THE COOL AIR IS SPEEDING SOUTHWARD THROUGH NORTHERN
ILLINOIS AT THIS TIME AND SHOULD PUSH SOUTH THROUGH AFTERNOON AND
EVENING.

THE COMBINATION OF BOUNDARIES AND POOLING OF MOISTURE HAS ALREADY
PRODUCED MUCAPE VALUES >3000 J/KG SOUTHEAST OF THE ORIGINAL OUTFLOW
WITH LITTLE OR NO CAPE.  WOULD EXPECT SCATTERED DEVELOPMENT ALONG
THIS BOUNDARY THIS AFTERNOON. THIS EVENING...MCS NOW DEVELOPING OVER
NORTHWEST MISSOURI WILL LIKELY TRACK NORTHEAST AND THEN EAST
SOUTHEAST ALONG PLUNGING FRONTAL BOUNDARY.  WOULD EXPECT THAT MUCH
OF THE AREA SHOULD SEE STORMS AT SOME POINT OVERNIGHT GIVEN THE
BOUNDARIES...THE APPROACHING MCS...AND AN INCREASING LLJ.  ONLY
QUESTION IS LACK OF SIGNIFICANT DYNAMICS WITH THE BEST FORCING NORTH
AND WEST OF THE AREA.

SOMEWHAT OF A LULL IS LIKELY ON THURSDAY WITH ONLY SCATTERED
ACTIVITY LIKELY OVER THE CENTRAL AND NORTH.  OF COURSE THAT DEPENDS
ON THE BOUNDARY PLACEMENT IN THE WAKE OF TONIGHTS MCS.

NEXT LIKELY POPS CAN BE EXPECTED ON FRIDAY AS DYNAMICS OF MAIN LOBE
ASSOCIATED WITH UPPER LOW OVER NORTHERN PLAINS REACHES AREA WITH
ASSOCIATED FRONT. COOLER TEMPS ALOFT WILL ENHANCE INSTABILITY
BRINGING ANOTHER POTENTIAL ROUND OF SEVERE WEATHER.

PRECIP WILL LIKELY LINGER INTO SATURDAY UNTIL MAIN TROUGH PASSES
THROUGH.

LONG TERM...SATURDAY THROUGH WEDNESDAY...
NORTHWEST FLOW SHOULD KEEP FORECAST AREA COOL AND DRY INTO NEXT
WEEK.  NEXT SYSTEM APPROACHES THE AREA LATE TUESDAY INTO WEDNESDAY.

&&

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

&&

BARKER

Hazardous weather outlook, May 11, 11:30 AM CDT, 6 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LINCOLN IL
1130 AM CDT WED MAY 11 2005

ILZ027>031-036>038-040>057-061>063-066>068-071>073-121100-
CASS-CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-
DE WITT-DOUGLAS-EDGAR-EFFINGHAM-FULTON-JASPER-KNOX-LAWRENCE-LOGAN-
MACON-MARSHALL-MASON-MCLEAN-MENARD-MORGAN-MOULTRIE-PEORIA-PIATT-
RICHLAND-SANGAMON-SCHUYLER-SCOTT-SHELBY-STARK-TAZEWELL-VERMILION-
WOODFORD-
INCLUDING THE CITIES OF...BLOOMINGTON...CHAMPAIGN...DANVILLE...
DECATUR...EFFINGHAM...FLORA...GALESBURG...HAVANA...JACKSONVILLE...
LAWRENCEVILLE...LINCOLN...MATTOON...PEORIA...SHELBYVILLE...
SPRINGFIELD AND TAYLORVILLE
1130 AM CDT WED MAY 11 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND SOUTHEAST ILLINOIS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS CENTRAL AND
SOUTHEAST ILLINOIS THIS AFTERNOON AND INTO THIS EVENING. THE BEST
CHANCES FOR SEVERE STORMS WILL BE FROM PEORIA SOUTHWARD BETWEEN
3 AND 9 PM. LARGE HAIL IS THE MAIN SEVERE WEATHER THREAT. GUSTY
WINDS AND HEAVY RAIN WITH SOME PONDING OF WATER IN URBAN AREAS CAN
ALSO BE EXPECTED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A CONTINUED CHANCE OF SEVERE THUNDERSTORMS WILL BE POSSIBLE ON
THURSDAY NORTHWEST OF THE ILLINOIS RIVER. THERE IS A SLIGHT CHANCE
OF SEVERE THUNDERSTORMS ACROSS CENTRAL AND SOUTHEAST ILLINOIS FROM
THE ILLINOIS RIVER SOUTHEAST ON FRIDAY AND FRIDAY NIGHT AS A COLD
FRONT MOVES THROUGH ILLINOIS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED BETWEEN 3 AND 9 PM THIS AFTERNOON
AND EARLY EVENING.

&&

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

HTTP://WWW.WEATHER.GOV/LINCOLN. THIS ADDRESS IS ALL IN LOWER CASE.

HUETTL/SHIMON

In the hours before

Local storm report, May 11, 5:24 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
524 PM CDT WED MAY 11 2005

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

0522 PM     HAIL             MAROA                   40.04N 88.95W
05/11/2005  0.88 INCH        MACON              IL   LAW ENFORCEMENT

            OBSERVED BY LAW ENFORCEMENT...VIA MACON COUNTY EMERGENCY
            MANAGER.

&&

KELLY

Local storm report, May 11, 5:55 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
555 PM CDT WED MAY 11 2005

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

0550 PM     HAIL             BLUE MOUND              39.70N 89.12W
05/11/2005  1.00 INCH        MACON              IL   EMERGENCY MNGR

            REPORTED BY EMERGENCY MANAGER.

&&

KELLY

Local storm report, May 11, 6:04 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
604 PM CDT WED MAY 11 2005

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

0600 PM     HAIL             BLUE MOUND              39.70N 89.12W
05/11/2005  1.00 INCH        MACON              IL   LAW ENFORCEMENT

            HAIL COVERING THE GROUND...SNOW PLOWS NEEDED TO CLEAR
            HAIL OFF OF STREET.

&&

KELLY

Local storm report, May 11, 6:06 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
606 PM CDT WED MAY 11 2005

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

0600 PM     TSTM WND GST     BLUE MOUND              39.70N 89.12W
05/11/2005  60 MPH           MACON              IL   EMERGENCY MNGR

            WINDS ESTIMATED 60 TO 70 MPH

&&

KELLY

Local storm report, May 11, 6:12 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LINCOLN IL
612 PM CDT WED MAY 11 2005

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

0600 PM     HAIL             BLUE MOUND              39.70N 89.12W
05/11/2005  1.00 INCH        MACON              IL   EMERGENCY MNGR

            HAIL COVERING THE GROUND...SNOW PLOWS NEEDED TO CLEAR
            HAIL OFF OF STREET. REPORT FROM MACON COUNTY EMERGENCY
            MANAGER.

&&

KELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 2:57 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	52 min
May 11, 5:23 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Macon	25 min
May 11, 5:29 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Shelby	46 min
May 11, 5:33 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	59 min
May 11, 5:34 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	57 min
May 11, 5:38 PM CDT	Severe Thunderstorm Warning	ILX	Douglas, Moultrie, Piatt	67 min
May 11, 6:05 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	41 min
May 11, 6:20 PM CDT	Flash Flood Warning	ILX	Edgar	3 hr
May 11, 6:23 PM CDT	Flash Flood Warning	ILX	Christian, Macon	3 hr
May 11, 6:29 PM CDT	Flash Flood Warning	ILX	Moultrie	3 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2005 Every severe thunderstorm warning in 2005

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.